Thor Harald Ringsby

Om

Arbeidssted:

Institutt for Biologi, NTNU

Centre for Biodiversity Dynamics, NTNU https://www.ntnu.edu/cbd

Forskning

Mine forsknings interesser faller i hovedsak innenfor feltene populasjonsøkologi livshistorie og bevaringsbiologi.

Det er viktig å forstå hvordan økologiske og evolusjonære mekanismer påvirker arters utbredelse og deres tallrikhet. En måte å tilegne seg kunnskap om disse mekanismene er å studere variasjonen i suksess ("fitness") som finnes mellom individer i ulike populasjoner og forstå hvordan individenes fitness påvirkes av både nedarvede egenskaper samt miljøforhold (for eksempel værforhold gjennom sesongen) så vel som demografiske forhold (f.eks. populasjonstetthet, kjønns rate). Dette er også avgjørende kunnskap for å kunne forutsi endringer i populasjonsstørrelser over tid - noe som også er sentralt i populasjonsøkologien som fagdisiplin, så vel som innen bevaringsbiologien.

Mange arter opplever sterk tilbakegang i populasjonsstørrelse i dag. En viktig årsak til dette er konsekvensene av menneskelig aktivitet. Spesielt har har habitatødeleggeelse på grunn av skogbruk, jordbruk, byutvikling og infrastruktur ført til fragmentering av områder som tidligere utgjorde kontinuerlige leveområder for en populasjon. Mange populasjoner har derfor blitt splittet opp i mindre sub-populasjoner som er isolert fra hverandre og er avhengige av utveksling av individer for å kunne opprettholdes over tid. Denne type romlig struktur kalles en metapopulasjon.

En annen årsak til endringer i populasjonsstørrelser og arters utbredelse er de pågående menneskeskapte klimaendringene. Det er idag et stort behov for kunnskap omkring dette slik at vi kan forutsi endringene som vil komme, og om mulig sette igang tiltak for å redusere de negative konsekvensene. Det er derfor viktig å undersøke hvordan endringer i klimaet påvirker reprodukasjon og overlevelse til populasjoner og hvordan dette influerer populasjonens vekstrate over tid.

Det er også interessant å forstå hvordan variansen i insektfaunaen gjennom sesongen og mellom år påvirker reproduksjonssuksessen hos fuglearter hvor reirungene er avhengig av insektføde tidlig i livet. Slike trofiske interaksjoner mellom predator og byttedyr kan bety mye for bestandsdynamikken, særlig i en tid hvor klimaet er i endring.

Jeg er også interessert i å forstå i hvilken grad parasitter påvirker individuell fitness samt populasjonsfluktuasjoner hos vertsarter . Vi ser ofte at parasitter har høyere forekomst (prevalens) i enkelte vertspopulasjoner i forhold til andre. Hva bestemmer slik variasjon i tid og rom? Dette er ofte komplekse forhold bestemt av den coevolusjonære interaksjonen mellom vert-parasitt, hvordan parasitten overføres mellom verts individer, samt for eksempel klima og populasjonstetthet.

For å undersøke denne type økologiske mekanismer studerer benytter jeg et modellsystem bestående av bestående av 18 øypopulasjoner av gråspurv (Passer domesticus) på Helgelandskysten i nord Norge som vi har studert helt siden 1993.

The focus in ongoing work involves:

Hvordan påvirker lokal fenologi (sesongvariasjonen gjennom årstidene), slik som variasjon i vårstemperaturen fra år til år og klimaendringene tidspunkt for egglegging og reproduktiv suksess hoe gråspurv?
Påvirker populasjonstettheten hos gråspurv reproduktiv suksess? Hos mange fuglearter blir reirungene matet med insekter i tidlig alder og ved høye populasjonstettheter er det rimelig å anta at konkurransen om insekter er høy. Jeg fokuserer på i hvilken grad den lokale insektsfunaen (som reflekterer habitatets bæreevne) bestemmer (evt. begrenser) reproduktiv suksess hos gråspurv populasjoner. - dessuten, varierer dette gjennom sesongen og mellom habitat (dvs øyer på Helgelandskysten)?
Hva er betydningen av den variasjonen i tid og rom i sammensetningen av insektsamfunnet for reproduktiv suksess for gråspurv?
Variasjon i livshistorieegenskaper over tid og i rom: Jeg fokuserer på betydningen av kroppsstørrelse og ungevekstraten telomerene sin rolle som mediatorer av levetid og kondisjon hos Gråspurv
Årsaker og konsekvenser av variasjon i eggstørrelse hos gråspurv
Effekter av ekto og endoparasitter på variasjon i individuell fitness samt på populasjonsdynamikk hos gråspurv på øyer på Helgelandskysten
Predator-byttedyr dynamikk

Teaching:

Jeg er programrådsleder for det tverrfaglige masterprogrammet "Natural Resources Management"

Kursansvar:

BI1003 - Evolutionary Biology, Ecology and Ethology

BI2033 – Population ecology

BI2034 – Community ecology

RFEL3081 - Interdisciplinary Project for Environmental Sustainability (emneansvarlig)

RFEL3083 - Sustainable Management: Internship

Master projects:

Contact me!

Publikasjoner

2026

Aasen, Karoline; Ringsby, Thor Harald; Eriksen, Lasse Frost; Nilsen, Erlend Birkeland. (2026) Consequences of climate variation on phenotypic traits in willow ptarmigan in central Norway. NTNU Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Hansson Frank, Tor; Ranke, Peter Sjolte; Burnett, Hamish Andrew; Acker, Paul; Ringsby, Thor Harald; Wright, Jonathan; Jensen, Henrik; Sæther, Bernt-Erik; Araya Ajoy, Yimen Gerardo. (2026) Spatial heterogeneity in density dependence across life-history stages drives the dynamics of a bird metapopulation. Ecology
Vitenskapelig artikkel

2025

Goedert, Debora; Ringsby, Thor Harald; Jensen, Henrik; Kvalnes, Thomas; Araya Ajoy, Yimen Gerardo; Skomedal, Silje. (2025) Relationships between weather, arthropod biomass, and natal dispersal in house sparrows (Passer domesticus) in northern Norway. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Eriksen, Lasse Frost; Ringsby, Thor Harald; Israelsen, Markus Fjellstad; Moa, Pål Fossland; Grøtan, Vidar; Nilsen, Erlend Birkeland. (2025) Climatic variation affects seasonal survival of an alpine bird species. Wildlife Biology
Vitenskapelig artikkel
Araya Ajoy, Yimen Gerardo; Hansson Frank, Tor; Burnett, Hamish Andrew; Søraker, Jørgen Skavdal; Ranke, Peter Sjolte; Goedert, Debora; Ringsby, Thor Harald; Jensen, Henrik; Sæther, Bernt-Erik. (2025) Assessing the 'Small Population' Paradigm: The Effects of Stochasticity on Evolutionary Change and Population Growth in a Bird Metapopulation. Ecology Letters
Kommentar
Saatoglu, Fikriye Dilan; Niskanen, Alina Katariina; Froy, Hannah; Ranke, Peter Sjolte; Goedert, Debora; Reid, Jane Margaret; Ringsby, Thor Harald; Sæther, Bernt-Erik; Araya Ajoy, Yimen Gerardo; Jensen, Henrik. (2025) Metapopulation-level analyses reveal positive fitness consequences of immigration in a small bird. Journal of Animal Ecology
Vitenskapelig artikkel

2024

McAuley, John B; Servin, Bertrand; Burnett, Hamish Andrew; Brekke, Cathrine; Peters, Lucy; Hagen, Ingerid Julie; Niskanen, Alina Katariina; Ringsby, Thor Harald; Husby, Arild; Jensen, Henrik. (2024) The Genetic Architecture of Recombination Rates is Polygenic and Differs between the Sexes in Wild House Sparrows (Passer domesticus). Molecular Biology and Evolution (MBE)
Vitenskapelig artikkel
Eriksen, Lasse Frost; Nilsen, Erlend Birkeland; Ringsby, Thor Harald; Moa, Pål Fossland; Grøtan, Vidar. (2024) Life history traits and demography of a mountain bird under climatic variation. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Ranke, Peter Sjolte; Pepke, Michael Le; Søraker, Jørgen Skavdal; David, Gabriel; Araya Ajoy, Yimen Gerardo; Wright, Jonathan; Nafstad, Ådne Messel; Rønning, Bernt; Pärn, Henrik; Ringsby, Thor Harald. (2024) Long-distance dispersal in the short-distance dispersing house sparrow (Passer domesticus). Ecology and Evolution
Vitenskapelig artikkel
Htay, Thazin; Htoo, Kyaw Kyaw; Røskaft, Eivin; Ringsby, Thor Harald; Ranke, Peter Sjolte. (2024) Environmental Factors Affecting Spatio-Temporal Distribution of Crop-Exploiting Species: Implications for Coexistence Between Agricultural Production and Avifauna Conservation in Wetlands. Environmental Management
Vitenskapelig artikkel

2023

Htay, Thazin; Htoo, Kyaw Kyaw; Røskaft, Eivin; Ringsby, Thor Harald; Ranke, Peter Sjolte. (2023) Social and ecological drivers of illegal bird hunting in the Indawgyi wetland ecosystem in Myanmar. Conservation Science and Practice (CSP)
Vitenskapelig artikkel
Pepke, Michael Le; Kvalnes, Thomas; Wright, Jonathan; Araya Ajoy, Yimen Gerardo; Ranke, Peter Sjolte; Boner, Winnie; Monaghan, Pat; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2023) Longitudinal telomere dynamics within natural lifespans of a wild bird. Scientific Reports
Vitenskapelig artikkel
Gholami, Fatemeh; Jensen, Henrik; Ringsby, Thor Harald; Kvalnes, Thomas; Burnett, Hamish Andrew. (2023) Effect of inbreeding on egg size and clutch size in an insular house sparrow metapopulation in northern Norway. Norwegian University of Science and Technology
Masteroppgave
Oddvik, Vilde Jonasson; Ringsby, Thor Harald; Christensen-Dalsgaard, Signe; Kvalnes, Thomas. (2023) The Effects of Diet and Weather on Early-life Growth and Survival in Atlantic Puffin Nestlings in Northern Norway. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Saugestad, Margrete; Ringsby, Thor Harald; Kvalnes, Thomas; Ranke, Peter Sjolte; Pepke, Michael Le. (2023) The influence of arthropods availability on fledgling morphology and reproductive success in wild house sparrows. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Htay, Thazin; Røskaft, Eivin; Ringsby, Thor Harald; Ranke, Peter Sjolte. (2023) Spatio-temporal variation in avian taxonomic, functional, and phylogenetic diversity and its relevance for conservation in a wetland ecosystem in Myanmar. Biodiversity and Conservation
Vitenskapelig artikkel
Eriksen, Lasse Frost; Ringsby, Thor Harald; Pedersen, Hans Christian; Nilsen, Erlend Birkeland. (2023) Climatic forcing and individual heterogeneity in a resident mountain bird: legacy data reveal effects on reproductive strategies. Royal Society Open Science
Vitenskapelig artikkel
Pepke, Michael Le; Ringsby, Thor Harald; Eisenberg, Dan T. A.. (2023) The evolution of early-life telomere length, pace-of-life and telomere-chromosome length dynamics in birds. Molecular Ecology
Vitenskapelig artikkel
Nafstad, Ådne Messel; Rønning, Bernt; Aase, Kenneth; Ringsby, Thor Harald; Hagen, Ingerid Julie; Ranke, Peter Sjolte; Kvalnes, Thomas; Stawski, Clare; Räsänen, Katja; Sæther, Bernt-Erik. (2023) Spatial variation in the evolutionary potential and constraints of basal metabolic rate and body mass in a wild bird. Journal of Evolutionary Biology
Vitenskapelig artikkel
Kazemi, Maryam; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik; Burnett, Hamish Andrew; Myhre, Ane Marlene. (2023) Demographic changes in female-skewed populations of house sparrow (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave

2022

Pepke, Michael Le; Kvalnes, Thomas; Rønning, Bernt; Jensen, Henrik; Boner, Winnie; Sæther, Bernt-Erik; Monaghan, Pat; Ringsby, Thor Harald. (2022) Artificial size selection experiment reveals telomere length dynamics and fitness consequences in a wild passerine. Molecular Ecology
Vitenskapelig artikkel
Htay, Thazin; Ringsby, Thor Harald; Røskaft, Eivin; Ranke, Peter Sjolte. (2022) Promoting bird conservation in wetland-associated landscapes: Factors influencing avian crop damage and farmers’ attitudes. Global Ecology and Conservation
Vitenskapelig artikkel
Mehlhoop, Anne Catriona; Van Moorter, Bram; Ringsby, Thor Harald; Hagen, Dagmar; Rolandsen, Christer Moe; Evju, Marianne. (2022) Evaluating mitigation measures to reduce negative impacts of infrastructure construction on vegetation and wildlife. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Søraker, Jørgen Skavdal; Jensen, Henrik; Sæther, Bernt-Erik; Wright, Jonathan; Ranke, Peter Sjolte; Ringsby, Thor Harald; Araya-Ajoy, Yimen G.. (2022) Disentangling the age-dependent causal pathways affecting multiple paternity in house sparrows. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Bjørsrud, Maren Sofie; Ringsby, Thor Harald; Kvalnes, Thomas; Pepke, Michael Le; Ranke, Peter Sjolte. (2022) Predator-Induced Selection on Phenotypes by Sparrowhawks (Accipiter nisus) in House sparrows (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Mehlhoop, Anne Catriona; Van Moorter, Bram; Rolandsen, Christer Moe; Hagen, Dagmar; Granhus, Aksel; Eriksen, Rune; Ringsby, Thor Harald; Solberg, Erling Johan. (2022) Moose in our neighborhood: Does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses?. Ecology and Evolution
Vitenskapelig artikkel
Pepke, Michael Le; Kvalnes, Thomas; Ranke, Peter Sjolte; Araya-Ajoy, Yimen; Wright, Jonathan; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2022) Causes and consequences of variation in early-life telomere length in a bird metapopulation. Ecology and Evolution
Vitenskapelig artikkel
Pepke, Michael Le; Niskanen, Alina Katariina; Kvalnes, Thomas; Boner, Winnie; Sæther, Bernt-Erik; Ringsby, Thor Harald; Jensen, Henrik. (2022) Inbreeding is associated with shorter early-life telomere length in a wild passerine. Conservation Genetics
Vitenskapelig artikkel

2021

Pepke, Michael Le; Kvalnes, Thomas; Lundregan, Sarah; Boner, Winnie; Monaghan, Pat; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2021) Genetic architecture and heritability of early-life telomere length in a wild passerine. Molecular Ecology
Vitenskapelig artikkel
Saatoglu, Fikriye Dilan; Niskanen, Alina Katariina; Kuismin, Markku; Ranke, Peter Sjolte; Hagen, Ingerid Julie; Araya-Ajoy, Yimen; Kvalnes, Thomas; Pärn, Henrik; Rønning, Bernt; Ringsby, Thor Harald. (2021) Dispersal in a house sparrow metapopulation: An integrative case study of genetic assignment calibrated with ecological data and pedigree information. Molecular Ecology
Vitenskapelig artikkel
Muller, Amandine Sophie; Jensen, Henrik; Araya-Ajoy, Yimen; Husby, Arild; Kvalnes, Thomas; Lundregan, Sarah; Niskanen, Alina Katariina; Ringsby, Thor Harald; Wright, Jonathan. (2021) Effects of inbreeding on lay date in house sparrows (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Gravelsæther, Maria Margareth Angelil; Ringsby, Thor Harald; Fossøy, Frode; Stokke, Bård Gunnar; Hansen, Brage Bremset. (2021) Effects of arthropod abundance on reproductive success in Svalbard snow bunting (Plectrophenax nivalis). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Araya-Ajoy, Yimen; Niskanen, Alina Katariina; Froy, Hannah; Ranke, Peter Sjolte; Kvalnes, Thomas; Rønning, Bernt; Pepke, Michael Le; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2021) Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation. Ecology Letters
Vitenskapelig artikkel
Ranke, Peter Sjolte; Araya-Ajoy, Yimen; Ringsby, Thor Harald; Pärn, Henrik; Rønning, Bernt; Jensen, Henrik; Wright, Jonathan; Sæther, Bernt-Erik. (2021) Spatial structure and dispersal dynamics in a house sparrow metapopulation. Journal of Animal Ecology
Vitenskapelig artikkel
Pepke, Michael Le; Ringsby, Thor Harald; Jensen, Henrik; Kvalnes, Thomas; Wright, Jonathan. (2021) The ecological and evolutionary role of telomere length in house sparrows. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling

2020

Ringsby, Thor Harald; Nilsen, Erlend Birkeland; Eriksen, Lasse Frost; Eichholz, Emanuel. (2020) Optimal spatiotemporal harvest strategies for willow ptarmigan (Lagopus lagopus) in central Norway. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Lundregan, Sarah L.; Niskanen, Alina K.; Muff, Stefanie; Holand, Håkon; Kvalnes, Thomas; Ringsby, Thor-Harald; Husby, Arild; Jensen, Henrik. (2020) Resistance to gapeworm parasite has both additive and dominant genetic components in house sparrows, with evolutionary consequences for ability to respond to parasite challenge. Molecular Ecology
Vitenskapelig artikkel
Dehnhard, Nina; Skei, Jørgen; Christensen-Dalsgaard, Signe; May, Roelof Frans; Halley, Duncan John; Ringsby, Thor Harald; Lorentsen, Svein Håkon. (2020) Boat disturbance effects on moulting common eiders Somateria mollissima. Marine Biology
Vitenskapelig artikkel
Niskanen, Alina Katariina; Billing, Anna Maria; Holand, Håkon; Hagen, Ingerid Julie; Araya-Ajoy, Yimen; Husby, Arild; Rønning, Bernt; Myhre, Ane Marlene; Ranke, Peter Sjolte; Kvalnes, Thomas. (2020) Consistent scaling of inbreeding depression in space and time in a house sparrow metapopulation. Proceedings of the National Academy of Sciences of the United States of America (PNAS)
Vitenskapelig artikkel
Ranke, Peter Sjolte; Skjelseth, Sigrun; Hagen, Ingerid Julie; Billing, Anna Maria; Pedersen, Åsa Alexandra Borg; Pärn, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik; Jensen, Henrik. (2020) Multi‑generational genetic consequences of reinforcement in a bird metapopulation. Conservation Genetics
Vitenskapelig artikkel

2019

Holand, Håkon; Jensen, Henrik; Kvalnes, Thomas; Tufto, Jarle; Pärn, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald. (2019) Parasite prevalence increases with temperature in an avian metapopulation in northern Norway. Parasitology
Vitenskapelig artikkel
Ranke, Peter Sjolte; Jensen, Henrik; Ringsby, Thor Harald; Pärn, Henrik; Sæther, Bernt-Erik. (2019) Demographic and genetic consequences of dispersal in house sparrows. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Thurmann-Nielsen, Cathrine Framstad; Ringsby, Thor Harald; Pepke, Michael Le; Rønning, Bernt; Kvalnes, Thomas. (2019) Nest Microclimate in Relation to Maternal Phenotypic Quality and Reproductive Success in a Wild Population of House Sparrows (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Julseth, Martin Gjestrud; Ringsby, Thor Harald; Rønning, Bernt; Pepke, Michael Le; Skei, Jon Kristian; Kvalnes, Thomas. (2019) The effect of arthropod availability on reproductive phenology and success in a multi-brooded passerine Passer domesticus. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Araya-Ajoy, Yimen; Ranke, Peter Sjolte; Kvalnes, Thomas; Rønning, Bernt; Holand, Håkon; Myhre, Ane Marlene; Pärn, Henrik; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2019) Characterizing morphological (co)variation using structural equation models: Body size, allometric relationships and evolvability in a house sparrow metapopulation. Evolution
Vitenskapelig artikkel

2018

Lundregan, Sarah; Hagen, Ingerid Julie; Gohli, Jostein; Niskanen, Alina Katariina; Kemppainen, Petri; Ringsby, Thor Harald; Kvalnes, Thomas; Pärn, Henrik; Rønning, Bernt; Holand, Håkon. (2018) Inferences of genetic architecture of bill morphology in house sparrow using a high-density SNP array point to a polygenic basis. Molecular Ecology
Vitenskapelig artikkel
Kvalnes, Thomas; Røberg, Anja Ås; Jensen, Henrik; Holand, Håkon; Pärn, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald. (2018) Offspring fitness and the optimal propagule size in a fluctuating environment. Journal of Avian Biology
Vitenskapelig artikkel
Jakobsen, Marte; Ringsby, Thor Harald; Pedersen, Michael Pepke; Kvalnes, Thomas; Rønning, Bernt. (2018) Spatiotemporal Variation and Fitness Consequences of Blood Hemoglobin Concentration in free-living House Sparrow (Passer domesticus) Nestlings. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Krogfjord, Mari; Ringsby, Thor Harald; Kvalnes, Thomas; Pedersen, Michael Pepke. (2018) Effects of Variation in Egg Size on Maternal Fitness in a Population of House Sparrows (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Johansen, Kristina; Ringsby, Thor Harald; Jensen, Henrik; Kvalnes, Thomas; Tufto, Jarle. (2018) Spatiotemporal variation in laying date and its impact on reproductive success in houses parrows (Passer domesticus). Norwegian University of Science and Technology
Masteroppgave
Stavnås, Veronica Myhr; Nilsen, Erlend Birkeland; Ringsby, Thor Harald. (2018) Demographic determinants of population growth rate in willow ptarmigan (Lagopus lagopus) in Lierne, central Norway. Norges teknisk-naturvitenskapelige universitet (NTNU)
Masteroppgave
Talal, Mohammad; Wright, Jonathan; Jensen, Henrik; Ringsby, Thor Harald. (2018) Individual variation and indirect social effects in Producer-Scrounger behavior in the House Sparrow, Passer domesticus. Norges teknisk-naturvitenskapelige universitet
Masteroppgave

2017

Stubberud, Marlene Wæge; Myhre, Ane Marlene; Holand, Håkon; Kvalnes, Thomas; Ringsby, Thor Harald; Sæther, Bernt-Erik; Jensen, Henrik. (2017) Sensitivity analysis of effective population size to demographic parameters in house sparrow populations. Molecular Ecology
Vitenskapelig artikkel
Kvalnes, Thomas; Ringsby, Thor Harald; Jensen, Henrik; Hagen, Ingerid Julie; Rønning, Bernt; Pärn, Henrik; Holand, Håkon; Engen, Steinar; Sæther, Bernt-Erik. (2017) Reversal of response to artificial selection on body size in a wild passerine bird. Evolution
Vitenskapelig artikkel
Silva, Catarina; McFarlane, S. Eryn; Hagen, Ingerid Julie; Rönnegård, Lars; Billing, Anna Maria; Kvalnes, Thomas; Kemppainen, Petri; Rønning, Bernt; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2017) Insights into the genetic architecture of morphological and sexually selected traits in two passerine bird species. Heredity
Vitenskapelig artikkel
Ranke, Peter Sjolte; Skjelseth, Sigrun; Pärn, Henrik; Herfindal, Ivar; Pedersen, Åsa Alexandra Borg; Stokke, Bård Gunnar; Kvalnes, Thomas; Ringsby, Thor Harald; Sæther, Bernt-Erik; Jensen, Henrik. (2017) Demographic influences of translocated individuals on a resident population of house sparrows. Oikos
Vitenskapelig artikkel
Kemppainen, Petri; Rønning, Bernt; Kvalnes, Thomas; Hagen, Ingerid Julie; Ringsby, Thor Harald; Billing, Anna Maria; Pärn, Henrik; Lien, Sigbjørn; Husby, Arild; Sæther, Bernt-Erik. (2017) Controlling for P-value inflation in allele frequency change in experimental evolution and artificial selection experiments. Molecular Ecology Resources
Vitenskapelig artikkel
Pettersen, Nils Håkon; Wright, Jonathan; Jensen, Henrik; Ringsby, Thor Harald; Rønning, Bernt. (2017) Indirect social effects of the individual strategy in producer-scrounger foraging interactions. Norges teknisk-naturvitenskapelige universitet
Masteroppgave

2016

Nossen, Ida; Ciesielski, Tomasz Maciej; Dimmen, Malene Vågen; Jensen, Henrik; Ringsby, Thor Harald; Polder, Anuschka; Rønning, Bernt; Jenssen, Bjørn Munro; Styrishave, Bjarne. (2016) Steroids in house sparrows (Passer domesticus): Effects of POPs and male quality signalling. Science of the Total Environment
Vitenskapelig artikkel
Holand, Håkon; Kvalnes, Thomas; Gamelon, Marlène; Tufto, Jarle; Jensen, Henrik; Pärn, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2016) Spatial variation in senescence rates in a bird metapopulation. Oecologia
Vitenskapelig artikkel
Rønning, Bernt; Broggi, Juli; Bech, Claus; Moe, Børge; Ringsby, Thor Harald; Pärn, Henrik; Hagen, Ingerid Julie; Sæther, Bernt-Erik; Jensen, Henrik; Grindstaff, Jennifer. (2016) Is basal metabolic rate associated with recruit production and survival in free-living house sparrows?. Functional Ecology
Vitenskapelig artikkel
Danielsen, Preben; Ringsby, Thor Harald; Hansen, Brage Bremset; Varpe, Øystein; Veiberg, Vebjørn. (2016) Climate trends, weather fluctuations and calving phenology in Svalbard reindeer (Rangifer tarandus platyrhynchus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Lindstrøm, Ingrid Marie; Solberg, Erling Johan; Rolandsen, Christer Moe; Bram, Van Moorter; Ringsby, Thor Harald. (2016) No mitigating effects of roadside vegetation clearing on ungulate-vehicle collisions in Nord-Trøndelag. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Wright, Jonathan; Finnøen, Mette Helene; Jensen, Henrik; Ringsby, Thor Harald; Rønning, Bernt. (2016) Personality and pace-of-life behavioral syndromes in a model species, the House Sparrow (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Olsen, Mirja Carola; Wright, Jonathan; Jensen, Henrik; Ringsby, Thor Harald; Rønning, Bernt. (2016) Linking variation in personality and behavioural syndromes to social foraging and producer-scrounger effects in house sparrows (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave

2015

Wright, Jonathan; Jensen, Henrik; Ringsby, Thor Harald; Pärn, Henrik; Rønning, Bernt; Sommerli, Sindre Lysfjord. (2015) Personality and Innovation in House Sparrows - Evolutionary and Demographic Consequences of Individual Phenotypic Differences. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Holand, Håkon; Jensen, Henrik; Tufto, Jarle; Pärn, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald. (2015) Endoparasite infection has both short- and long-term negative effects on reproductive success of female house sparrows, as revealed by faecal parasitic egg counts. PLOS ONE
Vitenskapelig artikkel
Ringsby, Thor Harald; Jensen, Henrik; Pärn, Henrik; Kvalnes, Thomas; Boner, Winnie; Gillespie, Robert; Holand, Håkon; Hagen, Ingerid Julie; Rønning, Bernt; Sæther, Bernt-Erik. (2015) On being the right size: Increased body size is associated with reduced telomere length under natural conditions. Proceedings of the Royal Society of London. Biological Sciences
Vitenskapelig artikkel
Ringsby, Thor Harald; Kvalnes, Thomas; Jensen, Henrik; Røberg, Anja Ås. (2015) Effects of Variation in Egg Size on Offspring Fitness in Populations of House Sparrow (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Skøien, Elida Aarstad; Ringsby, Thor Harald; Fossøy, Frode; Hansen, Brage Bremset; Varpe, Øystein; Stokke, Bård Gunnar; Moksnes, Arne. (2015) Causes and Consequences of Breeding Synchrony in the Snow Bunting (Plectrophenax nivalis ). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Rijcke, Sandra De; Ringsby, Thor Harald; Lorentsen, Svein Håkon. (2015) Foraging behaviour of the European shag during early chick-rearing period; do they follow the marginal value theorem?. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Skøien, Elida Arstad; Ringsby, Thor Harald; Hansen, Brage Bremset; Fossøy, Frode; Stokke, Bård Gunnar; Varpe, Øystein. (2015) Causes and Consequences of Breeding Synchrony in the Snow Bunting (Plectrophenax nivalis). Institutt for biologi, Norges teknisk-naturvitenskapelige universitet
Masteroppgave

2014

Holand, Håkon; Ringsby, Thor Harald; Jensen, Henrik; Sæther, Bernt-Erik. (2014) The parasite Syngamus trachea in a metapopulation of house sparrows. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Baalsrud, Helle Tessand; Sæther, Bernt-Erik; Hagen, Ingerid Julie; Myhre, Ane Marlene; Ringsby, Thor Harald; Pärn, Henrik; Jensen, Henrik. (2014) Effects of population characteristics and structure on estimates of effective population size in a house sparrow metapopulation. Molecular Ecology
Vitenskapelig artikkel
Huseby, O.; Ringsby, Thor Harald; Rolandsen, Christer Moe; Van Moorter, Bram; Herfindal, Ivar; Solberg, Erling Johan. (2014) Sesongvariasjon i elgens aktivitet gjennom døgnet påvirker når og hvor den påkjøres. Hjorteviltet
Populærvitenskapelig artikkel
Dimmen, Malene Vågen; Jenssen, Bjørn Munro; Ciesielski, Tomasz Maciej; Jensen, Henrik; Ringsby, Thor Harald. (2014) Levels and effects of persistent organic pollutants (POPs) on circulating thyroid hormones in house sparrows (Passer domesticus) from Leka, Norway. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Holand, Håkon; Jensen, Henrik; Tufto, Jarle; Soliman, Mustafa M.; Pärn, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald. (2014) Lower survival probability of house sparrows severely infected by the gapeworm parasite. Journal of Avian Biology
Vitenskapelig artikkel
Skei, Jørgen; Ringsby, Thor Harald; Lorentsen, Svein Håkon. (2014) Exploring Moulting Common Eider (Somateria mollissima) Escape Responses towards Ship Traffic. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Nossen, Ida; Jenssen, Bjørn Munro; Ciesielski, Tomasz Maciej; Jensen, Henrik; Ringsby, Thor Harald. (2014) Possible Effects of Persistent Organic Pollutants on Steroid Hormone Homeostasis in House Sparrows (Passer domesticus) from Helgeland, Norway. Norges teknisk-naturvitenskapelige universitet
Masteroppgave

2013

Ofstad, Endre Grüner; Ringsby, Thor Harald; Herfindal, Ivar; Solberg, Erling Johan; Rolandsen, Christer Moe; Van Moorter, Bram F. A.. (2013) Seasonal Variation in Site Fidelity of Moose (Alces alces). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Huseby, Oddmund; Ringsby, Thor Harald; Solberg, Erling Johan; Herfindal, Ivar; Van Moorter, Bram F. A.; Rolandsen, Christer Moe. (2013) Spatio-temporal variation in moose-vehicle collisions: the effect of varying traffic intensity and light conditions. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Gressetvold, Marit; Ringsby, Thor Harald; Lorentsen, Svein-Håkon. (2013) Identifying Conservative Criteria for (environmental) Assessments of Vulnerability;: Seabirds and Offshore Wind Farms as a Case Study. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Melis, Claudia; Borg, Åsa Alexandra; Jensen, Henrik; Bjørkvoll, Eirin Marie; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2013) Genetic variability and structure of the water vole Arvicola amphibius across four metapopulations in northern Norway. Ecology and Evolution
Vitenskapelig artikkel
Kvalnes, Thomas; Ringsby, Thor Harald; Jensen, Henrik; Sæther, Bernt-Erik. (2013) Correlates of egg size variation in a population of house sparrow Passer domesticus. Oecologia
Vitenskapelig artikkel
Holand, Håkon; Jensen, Henrik; Tufto, Jarle; Sæther, Bernt-Erik; Ringsby, Thor Harald. (2013) Temporal and spatial variation in prevalence of the parasite Syngamus trachea in a metapopulation of House Sparrows (Passer domesticus). Parasitology
Vitenskapelig artikkel
Ringsby, Thor Harald; Holand, Håkon; Jensen, Henrik; Pärn, Henrik; Vastveit, Helene Russell. (2013) Spatial and temporal variation in hippoboscid parasitism by Ornithomya chloropus on house sparrows (Passer domesticus) and its effect on survival. Norges teknisk-naturvitenskapelige universitet
Masteroppgave

2012

Tufto, Jarle; Lande, Russell; Ringsby, Thor Harald; Engen, Steinar; Sæther, Bernt-Erik; Walla, T. R.; DeVries, P.J.. (2012) Estimating Brownian motion dispersal rate, longevity and population density from spatially explicit mark-recapture data on tropical butterflies. Journal of Animal Ecology
Vitenskapelig artikkel
Billing, Anna Maria; Lee, Aline Magdalena; Skjelseth, Sigrun; Borg, Åsa Alexandra; Hale, M. C.; Slate, J; Parn, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik; Jensen, Henrik. (2012) Evidence of inbreeding depression but not inbreeding avoidance in a natural house sparrow population. Molecular Ecology
Vitenskapelig artikkel
Parn, Henrik; Ringsby, Thor Harald; Jensen, Henrik; Sæther, Bernt-Erik. (2012) Spatial heterogeneity in the effects of climate and density-dependence on dispersal in a house sparrow metapopulation. Proceedings of the Royal Society of London. Biological Sciences
Vitenskapelig artikkel

2011

Kristiansen, Atle Torvik; Sæther, Bernt-Erik; Ringsby, Thor Harald; Jensen, Henrik. (2011) Genetic variation in a metapopulation of house sparrows: The interplay of population size and dispersal. NTNU, Institutt for biologi
Masteroppgave
Melis, Claudia; Holmern, Tomas; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2011) Who ends up in the eagle owl pellets? A new method to assess whether water voles experience different predation risk. Mammalian Biology
Vitenskapelig artikkel
Ringsby, Thor Harald; Odden, John. (2011) The ecology of a conflict: Eurasian lynx depredation on domestic sheep. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling

2010

Kvalnes, Thomas; Sæther, Bernt-Erik; Ringsby, Thor Harald; Jensen, Henrik. (2010) Correlates of egg size variation in a population of house sparrow Passer domesticus. NTNU, Institutt for biologi
Masteroppgave

2009

Holand, Håkon; Sæther, Bernt-Erik; Ringsby, Thor Harald; Jensen, Henrik. (2009) Effects of the parasitic gapeworm (Syngamus trachea) on survival in house sparrows (Passer domesticus). NTNU, Institutt for biologi
Masteroppgave
Parn, Henrik; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2009) Sex-specific fitness correlates of dispersal in a house sparrow metapopulation. Journal of Animal Ecology
Vitenskapelig artikkel
Ringsby, Thor Harald; Berge, Torborg; Sæther, Bernt-Erik; Jensen, Henrik. (2009) Reproductive success and individual variation in feeding frequency of House Sparrows (Passer domesticus). Journal of Ornithology = Journal fur Ornithologie
Vitenskapelig oversiktsartikkel

2008

Jones, OR; Gaillard, JM; Tuljapurkar, S; Alho, JS; Armitage, KB; Becker, PH; Bize, P; Brommer, J; Charmantier, A; Charpentier, M. (2008) Senescence rates are determined by ranking on the fast-slow life-history continuum. Ecology Letters
Vitenskapelig artikkel
Davidsen, Ole Roar; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2008) Size-related variation in survival rates of house sparrows (Passer domesticus) subject to artificial size-dependent selection. NTNU, Institutt for biologi
Masteroppgave
Jensen, Henrik; Steinsland, Ingelin; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2008) Evolutionary dynamics of a sexual ornament in the house sparrow (Passer domesticus): The role of indirect selection within and between sexes. Evolution
Vitenskapelig oversiktsartikkel
Ciesielski, Tomasz Maciej; Jenssen, Bjørn Munro; Pedersen, Hans Christian; Bæk, K.; Skåre, Janneche Utne; Ringsby, Thor Harald. (2008) Decabrominated diphenyl ether in ptarmigans and sparrows in Norway. Organohalogen Compounds
Vitenskapelig artikkel

2007

Skjelseth, Sigrun; Ringsby, Thor Harald; Tufto, Jarle; Jensen, Henrik; Sæther, Bernt-Erik. (2007) Dispersal of introduced house sparrows Passer domesticus: an experiment. Proceedings of the Royal Society of London. Biological Sciences
Vitenskapelig artikkel
Jensen, Henrik; Bremset, Erlend Myre; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2007) Multilocus heterozygosity and inbreeding depression in an insular house sparrow metapopulation. Molecular Ecology
Vitenskapelig oversiktsartikkel
Engen, Steinar; Ringsby, Thor Harald; Sæther, Bernt-Erik; Lande, Russell; Jensen, Henrik; Lillegård, Magnar; Ellegren, Hans. (2007) Effective size of fluctuating populations with two sexes and overlapping generations. Evolution
Vitenskapelig artikkel

2006

Solberg, E.J.; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2006) Fitness consequences of hybridization between house sparrows (Passer domesticus) and tree sparrows (P-montanus). Journal of Ornithology = Journal fur Ornithologie
Vitenskapelig artikkel
Jensen, Henrik; Svorkmo-Lundberg, Torkild; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2006) Environmental influence and cohort effects in a sexual ornament in the house sparrow, Passer domesticus. Oikos
Vitenskapelig artikkel
Bremset, Erlend Myre; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2006) Multilocus heterozygosity and inbreeding in an insular house sparrow metapopulation. NTNU, Institutt for biologi
Masteroppgave
Ringsby, Thor Harald; Sæther, Bernt-Erik; Jensen, Henrik; Engen, Steinar. (2006) Demographic characteristics of extinction in a small, insular population of house sparrows in Northern Norway. Conservation Biology
Vitenskapelig artikkel
Husby, Arild; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2006) Causes and consequences of adaptive seasonal sex ratio variation in house sparrows. Journal of Animal Ecology
Vitenskapelig artikkel
Jensen, Henrik; Steinsland, Ingelin; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2006) Indirect selection as a constraint on the evolution of sexual ornaments and other morphological traits in the House Sparrow. Journal of Ornithology = Journal fur Ornithologie
Konferanseabstract
Skjelseth, Sigrun; Ringsby, Thor Harald; Jensen, Henrik; Tufto, Jarle; Sæther, Bernt-Erik. (2006) Dispersal patterns within a meta-population of House Sparrows after an introduction experiment. Journal of Ornithology = Journal fur Ornithologie
Konferanseabstract
Skei, Jon Kristian; Dolmen, Dag; Rønning, Lars; Ringsby, Thor Harald. (2006) Habitat use during the aquatic phase of the newts Triturus vulgaris (L.) and T. cristatus (Laurenti) in central Norway: proposition for a conservation and monitoring area. Amphibia-Reptilia
Vitenskapelig artikkel

2005

Husby, Arild; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2005) Causes and consequences of sex ratio variation in house sparrows. NTNU, Institutt for biologi
Masteroppgave
Larsen, Line-Kristin; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2005) Correlates of multiple paternity (MP) in a house sparrow, Passer domesticus, meta-population. NTNU, Institutt for biologi
Masteroppgave
Tufto, Jarle; Ringsby, Thor Harald; Dhondt, A.A.; Andriaensen, Frank; Matthysen, Erik. (2005) A parametric model for estimation of dispersal patterns applied to five passerine spatially structured populations. The American Naturalist
Vitenskapelig artikkel

2004

Jensen, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald; Tufto, Jarle; Griffith, Simon C.; Ellegren, H. (2004) Lifetime reproductive success in relation to morphology in the house sparrow Passer domesticus. Journal of Animal Ecology
Vitenskapelig artikkel

2003

Henriksen, Snorre; Aanes, Ronny; Sæther, Bernt-Erik; Ringsby, Thor Harald; Tufto, Jarle. (2003) Does availability of resources influence grazing strategies in female Svalbard reindeer?. Rangifer
Vitenskapelig artikkel
Jensen, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald; Tufto, Jarle; Griffith, S. C.; Ellegren, Hans. (2003) Sexual variation in heritability and genetic correlations of morphological traits in house sparrow (Passer domesticus). Journal of Evolutionary Biology
Vitenskapelig artikkel

2002

Ringsby, Thor Harald; Sæther, Bernt-Erik; Tufto, Jarle; Jensen, Henrik; Solberg, Erling Johan. (2002) Asynchronous spatiotemporal variation in demography of a House Sparrow Passer domesticus metapopulation in a correlated environment. Ecology
Vitenskapelig artikkel
Solberg, Erling Johan; Loison, Anne; Ringsby, Thor Harald; Sæther, Bernt-Erik; Heim, Morten. (2002) Biased adult sex ratio can affect fecundity in primiparous moose. Wildlife Biology
Vitenskapelig artikkel

2000

Solberg, Erling Johan; Ringsby, Thor Harald; Altwegg, Andreas; Sæther, Bernt-Erik. (2000) Fertile House Sparrow X Tree Sparrow (Passer domesticus X Passer montanus) hybrids?. Journal of Ornithology = Journal fur Ornithologie
Vitenskapelig artikkel
Altwegg, Res; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2000) Phenotypic correlates and consequences of dispersal in a metapopulation of house sparrows Passer domesticus. Journal of Animal Ecology
Vitenskapelig artikkel

1999

Ringsby, Thor Harald; Sæther, Bernt-Erik; Altwegg, Andreas; Solberg, Erling Johan. (1999) Temporal and spatial variation in survival rates of a house sparrow metapopulation. Oikos
Vitenskapelig artikkel
Sæther, Bernt-Erik; Ringsby, Thor Harald; Bakke, Øyvind; Solberg, Erling Johan. (1999) Spatial and temporal variation in demography of a house sparrow metapopulation. Ecology
Vitenskapelig artikkel
Sæther, Bernt-Erik; Ringsby, Thor Harald; Bakke, Øyvind; Solberg, Erling Johan. (1999) Spatial and temporal variation in demography of a house sparrow metapopulation. Journal of Animal Ecology
Vitenskapelig artikkel
Ringsby, Thor Harald; Sæther, Bernt-Erik; Altwegg, Res; Solberg, Erling Johan. (1999) Temporal and spatial variation in survival rates of a house sparrow, Passer domesticus, metapopulation. Oikos
Vitenskapelig artikkel

1998

Ringsby, Thor Harald. (1998) Factors affecting juvenile survival and the consequences for local demography in a metapopulation of House Sparrows.
Vitenskapelig kapittel
Ringsby, Thor Harald. (1998) Variation in Space and Time: The Biology of a House Sparrow Metapopulation. Zoologisk Institutt, Fakultet for Kjemi og Biologi, NTNU
Doktoravhandling
Ringsby, Thor Harald. (1998) Variation in space and time: the biology of a House sparrow metapopulation. [Mangler utgivernavn]
Doktoravhandling
Ringsby, Thor Harald; Sæther, Bernt-Erik; Solberg, Erling Johan. (1998) Factors affecting juvenile survival in House Sparrow Passer domesticus. Journal of Avian Biology
Vitenskapelig artikkel
Tufto, Jarle; Solberg, E.J.; Ringsby, Thor Harald. (1998) Statistical models of transitive and intransitive dominance structures. Animal Behaviour
Vitenskapelig artikkel

1997

Solberg, E.J.; Ringsby, Thor Harald. (1997) Does male badge size signal status in small island populations of House sparrows, Passer domesticus?. Ethology
Vitenskapelig artikkel
Stewart, I.R.K.; Ringsby, Thor Harald; Solberg, E.J.. (1997) Absence of haematozoa in passerines from a Norwegian archipelago. Ornis Fennica
Vitenskapelig artikkel

1996

Sæther, Bernt-Erik; Ringsby, Thor Harald; Røskaft, Eivin. (1996) Life history variation, population processes and priorities in species conservation : towards a reunion of research paradigms. Oikos
Vitenskapelig artikkel

Tidsskriftspublikasjoner

Hansson Frank, Tor; Ranke, Peter Sjolte; Burnett, Hamish Andrew; Acker, Paul; Ringsby, Thor Harald; Wright, Jonathan; Jensen, Henrik; Sæther, Bernt-Erik; Araya Ajoy, Yimen Gerardo. (2026) Spatial heterogeneity in density dependence across life-history stages drives the dynamics of a bird metapopulation. Ecology
Vitenskapelig artikkel
Solberg, E.J.; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2006) Fitness consequences of hybridization between house sparrows (Passer domesticus) and tree sparrows (P-montanus). Journal of Ornithology = Journal fur Ornithologie
Vitenskapelig artikkel
Stubberud, Marlene Wæge; Myhre, Ane Marlene; Holand, Håkon; Kvalnes, Thomas; Ringsby, Thor Harald; Sæther, Bernt-Erik; Jensen, Henrik. (2017) Sensitivity analysis of effective population size to demographic parameters in house sparrow populations. Molecular Ecology
Vitenskapelig artikkel
Solberg, Erling Johan; Ringsby, Thor Harald; Altwegg, Andreas; Sæther, Bernt-Erik. (2000) Fertile House Sparrow X Tree Sparrow (Passer domesticus X Passer montanus) hybrids?. Journal of Ornithology = Journal fur Ornithologie
Vitenskapelig artikkel
Pepke, Michael Le; Kvalnes, Thomas; Lundregan, Sarah; Boner, Winnie; Monaghan, Pat; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2021) Genetic architecture and heritability of early-life telomere length in a wild passerine. Molecular Ecology
Vitenskapelig artikkel
Pepke, Michael Le; Kvalnes, Thomas; Rønning, Bernt; Jensen, Henrik; Boner, Winnie; Sæther, Bernt-Erik; Monaghan, Pat; Ringsby, Thor Harald. (2022) Artificial size selection experiment reveals telomere length dynamics and fitness consequences in a wild passerine. Molecular Ecology
Vitenskapelig artikkel
Holand, Håkon; Jensen, Henrik; Kvalnes, Thomas; Tufto, Jarle; Pärn, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald. (2019) Parasite prevalence increases with temperature in an avian metapopulation in northern Norway. Parasitology
Vitenskapelig artikkel
Jones, OR; Gaillard, JM; Tuljapurkar, S; Alho, JS; Armitage, KB; Becker, PH; Bize, P; Brommer, J; Charmantier, A; Charpentier, M. (2008) Senescence rates are determined by ranking on the fast-slow life-history continuum. Ecology Letters
Vitenskapelig artikkel
Jensen, Henrik; Svorkmo-Lundberg, Torkild; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2006) Environmental influence and cohort effects in a sexual ornament in the house sparrow, Passer domesticus. Oikos
Vitenskapelig artikkel
Altwegg, Res; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2000) Phenotypic correlates and consequences of dispersal in a metapopulation of house sparrows Passer domesticus. Journal of Animal Ecology
Vitenskapelig artikkel
Saatoglu, Fikriye Dilan; Niskanen, Alina Katariina; Kuismin, Markku; Ranke, Peter Sjolte; Hagen, Ingerid Julie; Araya-Ajoy, Yimen; Kvalnes, Thomas; Pärn, Henrik; Rønning, Bernt; Ringsby, Thor Harald. (2021) Dispersal in a house sparrow metapopulation: An integrative case study of genetic assignment calibrated with ecological data and pedigree information. Molecular Ecology
Vitenskapelig artikkel
Ringsby, Thor Harald; Sæther, Bernt-Erik; Jensen, Henrik; Engen, Steinar. (2006) Demographic characteristics of extinction in a small, insular population of house sparrows in Northern Norway. Conservation Biology
Vitenskapelig artikkel
Jensen, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald; Tufto, Jarle; Griffith, Simon C.; Ellegren, H. (2004) Lifetime reproductive success in relation to morphology in the house sparrow Passer domesticus. Journal of Animal Ecology
Vitenskapelig artikkel
Skjelseth, Sigrun; Ringsby, Thor Harald; Tufto, Jarle; Jensen, Henrik; Sæther, Bernt-Erik. (2007) Dispersal of introduced house sparrows Passer domesticus: an experiment. Proceedings of the Royal Society of London. Biological Sciences
Vitenskapelig artikkel
Husby, Arild; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2006) Causes and consequences of adaptive seasonal sex ratio variation in house sparrows. Journal of Animal Ecology
Vitenskapelig artikkel
Nossen, Ida; Ciesielski, Tomasz Maciej; Dimmen, Malene Vågen; Jensen, Henrik; Ringsby, Thor Harald; Polder, Anuschka; Rønning, Bernt; Jenssen, Bjørn Munro; Styrishave, Bjarne. (2016) Steroids in house sparrows (Passer domesticus): Effects of POPs and male quality signalling. Science of the Total Environment
Vitenskapelig artikkel
Eriksen, Lasse Frost; Ringsby, Thor Harald; Israelsen, Markus Fjellstad; Moa, Pål Fossland; Grøtan, Vidar; Nilsen, Erlend Birkeland. (2025) Climatic variation affects seasonal survival of an alpine bird species. Wildlife Biology
Vitenskapelig artikkel
Jensen, Henrik; Bremset, Erlend Myre; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2007) Multilocus heterozygosity and inbreeding depression in an insular house sparrow metapopulation. Molecular Ecology
Vitenskapelig oversiktsartikkel
Tufto, Jarle; Lande, Russell; Ringsby, Thor Harald; Engen, Steinar; Sæther, Bernt-Erik; Walla, T. R.; DeVries, P.J.. (2012) Estimating Brownian motion dispersal rate, longevity and population density from spatially explicit mark-recapture data on tropical butterflies. Journal of Animal Ecology
Vitenskapelig artikkel
Htay, Thazin; Htoo, Kyaw Kyaw; Røskaft, Eivin; Ringsby, Thor Harald; Ranke, Peter Sjolte. (2023) Social and ecological drivers of illegal bird hunting in the Indawgyi wetland ecosystem in Myanmar. Conservation Science and Practice (CSP)
Vitenskapelig artikkel
McAuley, John B; Servin, Bertrand; Burnett, Hamish Andrew; Brekke, Cathrine; Peters, Lucy; Hagen, Ingerid Julie; Niskanen, Alina Katariina; Ringsby, Thor Harald; Husby, Arild; Jensen, Henrik. (2024) The Genetic Architecture of Recombination Rates is Polygenic and Differs between the Sexes in Wild House Sparrows (Passer domesticus). Molecular Biology and Evolution (MBE)
Vitenskapelig artikkel
Lundregan, Sarah L.; Niskanen, Alina K.; Muff, Stefanie; Holand, Håkon; Kvalnes, Thomas; Ringsby, Thor-Harald; Husby, Arild; Jensen, Henrik. (2020) Resistance to gapeworm parasite has both additive and dominant genetic components in house sparrows, with evolutionary consequences for ability to respond to parasite challenge. Molecular Ecology
Vitenskapelig artikkel
Kvalnes, Thomas; Ringsby, Thor Harald; Jensen, Henrik; Hagen, Ingerid Julie; Rønning, Bernt; Pärn, Henrik; Holand, Håkon; Engen, Steinar; Sæther, Bernt-Erik. (2017) Reversal of response to artificial selection on body size in a wild passerine bird. Evolution
Vitenskapelig artikkel
Silva, Catarina; McFarlane, S. Eryn; Hagen, Ingerid Julie; Rönnegård, Lars; Billing, Anna Maria; Kvalnes, Thomas; Kemppainen, Petri; Rønning, Bernt; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2017) Insights into the genetic architecture of morphological and sexually selected traits in two passerine bird species. Heredity
Vitenskapelig artikkel
Jensen, Henrik; Steinsland, Ingelin; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2008) Evolutionary dynamics of a sexual ornament in the house sparrow (Passer domesticus): The role of indirect selection within and between sexes. Evolution
Vitenskapelig oversiktsartikkel
Pepke, Michael Le; Kvalnes, Thomas; Wright, Jonathan; Araya Ajoy, Yimen Gerardo; Ranke, Peter Sjolte; Boner, Winnie; Monaghan, Pat; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2023) Longitudinal telomere dynamics within natural lifespans of a wild bird. Scientific Reports
Vitenskapelig artikkel
Ciesielski, Tomasz Maciej; Jenssen, Bjørn Munro; Pedersen, Hans Christian; Bæk, K.; Skåre, Janneche Utne; Ringsby, Thor Harald. (2008) Decabrominated diphenyl ether in ptarmigans and sparrows in Norway. Organohalogen Compounds
Vitenskapelig artikkel
Tufto, Jarle; Ringsby, Thor Harald; Dhondt, A.A.; Andriaensen, Frank; Matthysen, Erik. (2005) A parametric model for estimation of dispersal patterns applied to five passerine spatially structured populations. The American Naturalist
Vitenskapelig artikkel
Ranke, Peter Sjolte; Skjelseth, Sigrun; Pärn, Henrik; Herfindal, Ivar; Pedersen, Åsa Alexandra Borg; Stokke, Bård Gunnar; Kvalnes, Thomas; Ringsby, Thor Harald; Sæther, Bernt-Erik; Jensen, Henrik. (2017) Demographic influences of translocated individuals on a resident population of house sparrows. Oikos
Vitenskapelig artikkel
Holand, Håkon; Kvalnes, Thomas; Gamelon, Marlène; Tufto, Jarle; Jensen, Henrik; Pärn, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2016) Spatial variation in senescence rates in a bird metapopulation. Oecologia
Vitenskapelig artikkel
Dehnhard, Nina; Skei, Jørgen; Christensen-Dalsgaard, Signe; May, Roelof Frans; Halley, Duncan John; Ringsby, Thor Harald; Lorentsen, Svein Håkon. (2020) Boat disturbance effects on moulting common eiders Somateria mollissima. Marine Biology
Vitenskapelig artikkel
Kemppainen, Petri; Rønning, Bernt; Kvalnes, Thomas; Hagen, Ingerid Julie; Ringsby, Thor Harald; Billing, Anna Maria; Pärn, Henrik; Lien, Sigbjørn; Husby, Arild; Sæther, Bernt-Erik. (2017) Controlling for P-value inflation in allele frequency change in experimental evolution and artificial selection experiments. Molecular Ecology Resources
Vitenskapelig artikkel
Htay, Thazin; Røskaft, Eivin; Ringsby, Thor Harald; Ranke, Peter Sjolte. (2023) Spatio-temporal variation in avian taxonomic, functional, and phylogenetic diversity and its relevance for conservation in a wetland ecosystem in Myanmar. Biodiversity and Conservation
Vitenskapelig artikkel
Eriksen, Lasse Frost; Ringsby, Thor Harald; Pedersen, Hans Christian; Nilsen, Erlend Birkeland. (2023) Climatic forcing and individual heterogeneity in a resident mountain bird: legacy data reveal effects on reproductive strategies. Royal Society Open Science
Vitenskapelig artikkel
Jensen, Henrik; Steinsland, Ingelin; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2006) Indirect selection as a constraint on the evolution of sexual ornaments and other morphological traits in the House Sparrow. Journal of Ornithology = Journal fur Ornithologie
Konferanseabstract
Skjelseth, Sigrun; Ringsby, Thor Harald; Jensen, Henrik; Tufto, Jarle; Sæther, Bernt-Erik. (2006) Dispersal patterns within a meta-population of House Sparrows after an introduction experiment. Journal of Ornithology = Journal fur Ornithologie
Konferanseabstract
Lundregan, Sarah; Hagen, Ingerid Julie; Gohli, Jostein; Niskanen, Alina Katariina; Kemppainen, Petri; Ringsby, Thor Harald; Kvalnes, Thomas; Pärn, Henrik; Rønning, Bernt; Holand, Håkon. (2018) Inferences of genetic architecture of bill morphology in house sparrow using a high-density SNP array point to a polygenic basis. Molecular Ecology
Vitenskapelig artikkel
Kvalnes, Thomas; Røberg, Anja Ås; Jensen, Henrik; Holand, Håkon; Pärn, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald. (2018) Offspring fitness and the optimal propagule size in a fluctuating environment. Journal of Avian Biology
Vitenskapelig artikkel
Htay, Thazin; Ringsby, Thor Harald; Røskaft, Eivin; Ranke, Peter Sjolte. (2022) Promoting bird conservation in wetland-associated landscapes: Factors influencing avian crop damage and farmers’ attitudes. Global Ecology and Conservation
Vitenskapelig artikkel
Niskanen, Alina Katariina; Billing, Anna Maria; Holand, Håkon; Hagen, Ingerid Julie; Araya-Ajoy, Yimen; Husby, Arild; Rønning, Bernt; Myhre, Ane Marlene; Ranke, Peter Sjolte; Kvalnes, Thomas. (2020) Consistent scaling of inbreeding depression in space and time in a house sparrow metapopulation. Proceedings of the National Academy of Sciences of the United States of America (PNAS)
Vitenskapelig artikkel
Ringsby, Thor Harald; Sæther, Bernt-Erik; Solberg, Erling Johan. (1998) Factors affecting juvenile survival in House Sparrow Passer domesticus. Journal of Avian Biology
Vitenskapelig artikkel
Araya-Ajoy, Yimen; Niskanen, Alina Katariina; Froy, Hannah; Ranke, Peter Sjolte; Kvalnes, Thomas; Rønning, Bernt; Pepke, Michael Le; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2021) Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation. Ecology Letters
Vitenskapelig artikkel
Pepke, Michael Le; Ringsby, Thor Harald; Eisenberg, Dan T. A.. (2023) The evolution of early-life telomere length, pace-of-life and telomere-chromosome length dynamics in birds. Molecular Ecology
Vitenskapelig artikkel
Ranke, Peter Sjolte; Skjelseth, Sigrun; Hagen, Ingerid Julie; Billing, Anna Maria; Pedersen, Åsa Alexandra Borg; Pärn, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik; Jensen, Henrik. (2020) Multi‑generational genetic consequences of reinforcement in a bird metapopulation. Conservation Genetics
Vitenskapelig artikkel
Billing, Anna Maria; Lee, Aline Magdalena; Skjelseth, Sigrun; Borg, Åsa Alexandra; Hale, M. C.; Slate, J; Parn, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik; Jensen, Henrik. (2012) Evidence of inbreeding depression but not inbreeding avoidance in a natural house sparrow population. Molecular Ecology
Vitenskapelig artikkel
Sæther, Bernt-Erik; Ringsby, Thor Harald; Røskaft, Eivin. (1996) Life history variation, population processes and priorities in species conservation : towards a reunion of research paradigms. Oikos
Vitenskapelig artikkel
Ranke, Peter Sjolte; Pepke, Michael Le; Søraker, Jørgen Skavdal; David, Gabriel; Araya Ajoy, Yimen Gerardo; Wright, Jonathan; Nafstad, Ådne Messel; Rønning, Bernt; Pärn, Henrik; Ringsby, Thor Harald. (2024) Long-distance dispersal in the short-distance dispersing house sparrow (Passer domesticus). Ecology and Evolution
Vitenskapelig artikkel
Nafstad, Ådne Messel; Rønning, Bernt; Aase, Kenneth; Ringsby, Thor Harald; Hagen, Ingerid Julie; Ranke, Peter Sjolte; Kvalnes, Thomas; Stawski, Clare; Räsänen, Katja; Sæther, Bernt-Erik. (2023) Spatial variation in the evolutionary potential and constraints of basal metabolic rate and body mass in a wild bird. Journal of Evolutionary Biology
Vitenskapelig artikkel
Araya-Ajoy, Yimen; Ranke, Peter Sjolte; Kvalnes, Thomas; Rønning, Bernt; Holand, Håkon; Myhre, Ane Marlene; Pärn, Henrik; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2019) Characterizing morphological (co)variation using structural equation models: Body size, allometric relationships and evolvability in a house sparrow metapopulation. Evolution
Vitenskapelig artikkel
Araya Ajoy, Yimen Gerardo; Hansson Frank, Tor; Burnett, Hamish Andrew; Søraker, Jørgen Skavdal; Ranke, Peter Sjolte; Goedert, Debora; Ringsby, Thor Harald; Jensen, Henrik; Sæther, Bernt-Erik. (2025) Assessing the 'Small Population' Paradigm: The Effects of Stochasticity on Evolutionary Change and Population Growth in a Bird Metapopulation. Ecology Letters
Kommentar
Baalsrud, Helle Tessand; Sæther, Bernt-Erik; Hagen, Ingerid Julie; Myhre, Ane Marlene; Ringsby, Thor Harald; Pärn, Henrik; Jensen, Henrik. (2014) Effects of population characteristics and structure on estimates of effective population size in a house sparrow metapopulation. Molecular Ecology
Vitenskapelig artikkel
Holand, Håkon; Jensen, Henrik; Tufto, Jarle; Pärn, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald. (2015) Endoparasite infection has both short- and long-term negative effects on reproductive success of female house sparrows, as revealed by faecal parasitic egg counts. PLOS ONE
Vitenskapelig artikkel
Ringsby, Thor Harald; Jensen, Henrik; Pärn, Henrik; Kvalnes, Thomas; Boner, Winnie; Gillespie, Robert; Holand, Håkon; Hagen, Ingerid Julie; Rønning, Bernt; Sæther, Bernt-Erik. (2015) On being the right size: Increased body size is associated with reduced telomere length under natural conditions. Proceedings of the Royal Society of London. Biological Sciences
Vitenskapelig artikkel
Melis, Claudia; Borg, Åsa Alexandra; Jensen, Henrik; Bjørkvoll, Eirin Marie; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2013) Genetic variability and structure of the water vole Arvicola amphibius across four metapopulations in northern Norway. Ecology and Evolution
Vitenskapelig artikkel
Kvalnes, Thomas; Ringsby, Thor Harald; Jensen, Henrik; Sæther, Bernt-Erik. (2013) Correlates of egg size variation in a population of house sparrow Passer domesticus. Oecologia
Vitenskapelig artikkel
Ranke, Peter Sjolte; Araya-Ajoy, Yimen; Ringsby, Thor Harald; Pärn, Henrik; Rønning, Bernt; Jensen, Henrik; Wright, Jonathan; Sæther, Bernt-Erik. (2021) Spatial structure and dispersal dynamics in a house sparrow metapopulation. Journal of Animal Ecology
Vitenskapelig artikkel
Parn, Henrik; Ringsby, Thor Harald; Jensen, Henrik; Sæther, Bernt-Erik. (2012) Spatial heterogeneity in the effects of climate and density-dependence on dispersal in a house sparrow metapopulation. Proceedings of the Royal Society of London. Biological Sciences
Vitenskapelig artikkel
Htay, Thazin; Htoo, Kyaw Kyaw; Røskaft, Eivin; Ringsby, Thor Harald; Ranke, Peter Sjolte. (2024) Environmental Factors Affecting Spatio-Temporal Distribution of Crop-Exploiting Species: Implications for Coexistence Between Agricultural Production and Avifauna Conservation in Wetlands. Environmental Management
Vitenskapelig artikkel
Mehlhoop, Anne Catriona; Van Moorter, Bram; Rolandsen, Christer Moe; Hagen, Dagmar; Granhus, Aksel; Eriksen, Rune; Ringsby, Thor Harald; Solberg, Erling Johan. (2022) Moose in our neighborhood: Does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses?. Ecology and Evolution
Vitenskapelig artikkel
Huseby, O.; Ringsby, Thor Harald; Rolandsen, Christer Moe; Van Moorter, Bram; Herfindal, Ivar; Solberg, Erling Johan. (2014) Sesongvariasjon i elgens aktivitet gjennom døgnet påvirker når og hvor den påkjøres. Hjorteviltet
Populærvitenskapelig artikkel
Melis, Claudia; Holmern, Tomas; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2011) Who ends up in the eagle owl pellets? A new method to assess whether water voles experience different predation risk. Mammalian Biology
Vitenskapelig artikkel
Holand, Håkon; Jensen, Henrik; Tufto, Jarle; Sæther, Bernt-Erik; Ringsby, Thor Harald. (2013) Temporal and spatial variation in prevalence of the parasite Syngamus trachea in a metapopulation of House Sparrows (Passer domesticus). Parasitology
Vitenskapelig artikkel
Ringsby, Thor Harald; Sæther, Bernt-Erik; Altwegg, Andreas; Solberg, Erling Johan. (1999) Temporal and spatial variation in survival rates of a house sparrow metapopulation. Oikos
Vitenskapelig artikkel
Rønning, Bernt; Broggi, Juli; Bech, Claus; Moe, Børge; Ringsby, Thor Harald; Pärn, Henrik; Hagen, Ingerid Julie; Sæther, Bernt-Erik; Jensen, Henrik; Grindstaff, Jennifer. (2016) Is basal metabolic rate associated with recruit production and survival in free-living house sparrows?. Functional Ecology
Vitenskapelig artikkel
Henriksen, Snorre; Aanes, Ronny; Sæther, Bernt-Erik; Ringsby, Thor Harald; Tufto, Jarle. (2003) Does availability of resources influence grazing strategies in female Svalbard reindeer?. Rangifer
Vitenskapelig artikkel
Jensen, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald; Tufto, Jarle; Griffith, S. C.; Ellegren, Hans. (2003) Sexual variation in heritability and genetic correlations of morphological traits in house sparrow (Passer domesticus). Journal of Evolutionary Biology
Vitenskapelig artikkel
Skei, Jon Kristian; Dolmen, Dag; Rønning, Lars; Ringsby, Thor Harald. (2006) Habitat use during the aquatic phase of the newts Triturus vulgaris (L.) and T. cristatus (Laurenti) in central Norway: proposition for a conservation and monitoring area. Amphibia-Reptilia
Vitenskapelig artikkel
Holand, Håkon; Jensen, Henrik; Tufto, Jarle; Soliman, Mustafa M.; Pärn, Henrik; Sæther, Bernt-Erik; Ringsby, Thor Harald. (2014) Lower survival probability of house sparrows severely infected by the gapeworm parasite. Journal of Avian Biology
Vitenskapelig artikkel
Ringsby, Thor Harald; Sæther, Bernt-Erik; Tufto, Jarle; Jensen, Henrik; Solberg, Erling Johan. (2002) Asynchronous spatiotemporal variation in demography of a House Sparrow Passer domesticus metapopulation in a correlated environment. Ecology
Vitenskapelig artikkel
Solberg, Erling Johan; Loison, Anne; Ringsby, Thor Harald; Sæther, Bernt-Erik; Heim, Morten. (2002) Biased adult sex ratio can affect fecundity in primiparous moose. Wildlife Biology
Vitenskapelig artikkel
Solberg, E.J.; Ringsby, Thor Harald. (1997) Does male badge size signal status in small island populations of House sparrows, Passer domesticus?. Ethology
Vitenskapelig artikkel
Tufto, Jarle; Solberg, E.J.; Ringsby, Thor Harald. (1998) Statistical models of transitive and intransitive dominance structures. Animal Behaviour
Vitenskapelig artikkel
Stewart, I.R.K.; Ringsby, Thor Harald; Solberg, E.J.. (1997) Absence of haematozoa in passerines from a Norwegian archipelago. Ornis Fennica
Vitenskapelig artikkel
Pepke, Michael Le; Kvalnes, Thomas; Ranke, Peter Sjolte; Araya-Ajoy, Yimen; Wright, Jonathan; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2022) Causes and consequences of variation in early-life telomere length in a bird metapopulation. Ecology and Evolution
Vitenskapelig artikkel
Saatoglu, Fikriye Dilan; Niskanen, Alina Katariina; Froy, Hannah; Ranke, Peter Sjolte; Goedert, Debora; Reid, Jane Margaret; Ringsby, Thor Harald; Sæther, Bernt-Erik; Araya Ajoy, Yimen Gerardo; Jensen, Henrik. (2025) Metapopulation-level analyses reveal positive fitness consequences of immigration in a small bird. Journal of Animal Ecology
Vitenskapelig artikkel
Parn, Henrik; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik. (2009) Sex-specific fitness correlates of dispersal in a house sparrow metapopulation. Journal of Animal Ecology
Vitenskapelig artikkel
Sæther, Bernt-Erik; Ringsby, Thor Harald; Bakke, Øyvind; Solberg, Erling Johan. (1999) Spatial and temporal variation in demography of a house sparrow metapopulation. Ecology
Vitenskapelig artikkel
Ringsby, Thor Harald; Berge, Torborg; Sæther, Bernt-Erik; Jensen, Henrik. (2009) Reproductive success and individual variation in feeding frequency of House Sparrows (Passer domesticus). Journal of Ornithology = Journal fur Ornithologie
Vitenskapelig oversiktsartikkel
Sæther, Bernt-Erik; Ringsby, Thor Harald; Bakke, Øyvind; Solberg, Erling Johan. (1999) Spatial and temporal variation in demography of a house sparrow metapopulation. Journal of Animal Ecology
Vitenskapelig artikkel
Ringsby, Thor Harald; Sæther, Bernt-Erik; Altwegg, Res; Solberg, Erling Johan. (1999) Temporal and spatial variation in survival rates of a house sparrow, Passer domesticus, metapopulation. Oikos
Vitenskapelig artikkel
Pepke, Michael Le; Niskanen, Alina Katariina; Kvalnes, Thomas; Boner, Winnie; Sæther, Bernt-Erik; Ringsby, Thor Harald; Jensen, Henrik. (2022) Inbreeding is associated with shorter early-life telomere length in a wild passerine. Conservation Genetics
Vitenskapelig artikkel
Engen, Steinar; Ringsby, Thor Harald; Sæther, Bernt-Erik; Lande, Russell; Jensen, Henrik; Lillegård, Magnar; Ellegren, Hans. (2007) Effective size of fluctuating populations with two sexes and overlapping generations. Evolution
Vitenskapelig artikkel

Del av bok/rapport

Ringsby, Thor Harald. (1998) Factors affecting juvenile survival and the consequences for local demography in a metapopulation of House Sparrows.
Vitenskapelig kapittel

Studentoppgave eller avhandling

Aasen, Karoline; Ringsby, Thor Harald; Eriksen, Lasse Frost; Nilsen, Erlend Birkeland. (2026) Consequences of climate variation on phenotypic traits in willow ptarmigan in central Norway. NTNU Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Goedert, Debora; Ringsby, Thor Harald; Jensen, Henrik; Kvalnes, Thomas; Araya Ajoy, Yimen Gerardo; Skomedal, Silje. (2025) Relationships between weather, arthropod biomass, and natal dispersal in house sparrows (Passer domesticus) in northern Norway. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Kristiansen, Atle Torvik; Sæther, Bernt-Erik; Ringsby, Thor Harald; Jensen, Henrik. (2011) Genetic variation in a metapopulation of house sparrows: The interplay of population size and dispersal. NTNU, Institutt for biologi
Masteroppgave
Wright, Jonathan; Jensen, Henrik; Ringsby, Thor Harald; Pärn, Henrik; Rønning, Bernt; Sommerli, Sindre Lysfjord. (2015) Personality and Innovation in House Sparrows - Evolutionary and Demographic Consequences of Individual Phenotypic Differences. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Holand, Håkon; Ringsby, Thor Harald; Jensen, Henrik; Sæther, Bernt-Erik. (2014) The parasite Syngamus trachea in a metapopulation of house sparrows. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Husby, Arild; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2005) Causes and consequences of sex ratio variation in house sparrows. NTNU, Institutt for biologi
Masteroppgave
Bremset, Erlend Myre; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2006) Multilocus heterozygosity and inbreeding in an insular house sparrow metapopulation. NTNU, Institutt for biologi
Masteroppgave
Davidsen, Ole Roar; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2008) Size-related variation in survival rates of house sparrows (Passer domesticus) subject to artificial size-dependent selection. NTNU, Institutt for biologi
Masteroppgave
Larsen, Line-Kristin; Sæther, Bernt-Erik; Jensen, Henrik; Ringsby, Thor Harald. (2005) Correlates of multiple paternity (MP) in a house sparrow, Passer domesticus, meta-population. NTNU, Institutt for biologi
Masteroppgave
Ranke, Peter Sjolte; Jensen, Henrik; Ringsby, Thor Harald; Pärn, Henrik; Sæther, Bernt-Erik. (2019) Demographic and genetic consequences of dispersal in house sparrows. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Ofstad, Endre Grüner; Ringsby, Thor Harald; Herfindal, Ivar; Solberg, Erling Johan; Rolandsen, Christer Moe; Van Moorter, Bram F. A.. (2013) Seasonal Variation in Site Fidelity of Moose (Alces alces). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Huseby, Oddmund; Ringsby, Thor Harald; Solberg, Erling Johan; Herfindal, Ivar; Van Moorter, Bram F. A.; Rolandsen, Christer Moe. (2013) Spatio-temporal variation in moose-vehicle collisions: the effect of varying traffic intensity and light conditions. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Gressetvold, Marit; Ringsby, Thor Harald; Lorentsen, Svein-Håkon. (2013) Identifying Conservative Criteria for (environmental) Assessments of Vulnerability;: Seabirds and Offshore Wind Farms as a Case Study. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Ringsby, Thor Harald; Nilsen, Erlend Birkeland; Eriksen, Lasse Frost; Eichholz, Emanuel. (2020) Optimal spatiotemporal harvest strategies for willow ptarmigan (Lagopus lagopus) in central Norway. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Ringsby, Thor Harald. (1998) Variation in Space and Time: The Biology of a House Sparrow Metapopulation. Zoologisk Institutt, Fakultet for Kjemi og Biologi, NTNU
Doktoravhandling
Ringsby, Thor Harald. (1998) Variation in space and time: the biology of a House sparrow metapopulation. [Mangler utgivernavn]
Doktoravhandling
Eriksen, Lasse Frost; Nilsen, Erlend Birkeland; Ringsby, Thor Harald; Moa, Pål Fossland; Grøtan, Vidar. (2024) Life history traits and demography of a mountain bird under climatic variation. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Muller, Amandine Sophie; Jensen, Henrik; Araya-Ajoy, Yimen; Husby, Arild; Kvalnes, Thomas; Lundregan, Sarah; Niskanen, Alina Katariina; Ringsby, Thor Harald; Wright, Jonathan. (2021) Effects of inbreeding on lay date in house sparrows (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Gholami, Fatemeh; Jensen, Henrik; Ringsby, Thor Harald; Kvalnes, Thomas; Burnett, Hamish Andrew. (2023) Effect of inbreeding on egg size and clutch size in an insular house sparrow metapopulation in northern Norway. Norwegian University of Science and Technology
Masteroppgave
Oddvik, Vilde Jonasson; Ringsby, Thor Harald; Christensen-Dalsgaard, Signe; Kvalnes, Thomas. (2023) The Effects of Diet and Weather on Early-life Growth and Survival in Atlantic Puffin Nestlings in Northern Norway. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Saugestad, Margrete; Ringsby, Thor Harald; Kvalnes, Thomas; Ranke, Peter Sjolte; Pepke, Michael Le. (2023) The influence of arthropods availability on fledgling morphology and reproductive success in wild house sparrows. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Thurmann-Nielsen, Cathrine Framstad; Ringsby, Thor Harald; Pepke, Michael Le; Rønning, Bernt; Kvalnes, Thomas. (2019) Nest Microclimate in Relation to Maternal Phenotypic Quality and Reproductive Success in a Wild Population of House Sparrows (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Julseth, Martin Gjestrud; Ringsby, Thor Harald; Rønning, Bernt; Pepke, Michael Le; Skei, Jon Kristian; Kvalnes, Thomas. (2019) The effect of arthropod availability on reproductive phenology and success in a multi-brooded passerine Passer domesticus. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Mehlhoop, Anne Catriona; Van Moorter, Bram; Ringsby, Thor Harald; Hagen, Dagmar; Rolandsen, Christer Moe; Evju, Marianne. (2022) Evaluating mitigation measures to reduce negative impacts of infrastructure construction on vegetation and wildlife. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Gravelsæther, Maria Margareth Angelil; Ringsby, Thor Harald; Fossøy, Frode; Stokke, Bård Gunnar; Hansen, Brage Bremset. (2021) Effects of arthropod abundance on reproductive success in Svalbard snow bunting (Plectrophenax nivalis). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Søraker, Jørgen Skavdal; Jensen, Henrik; Sæther, Bernt-Erik; Wright, Jonathan; Ranke, Peter Sjolte; Ringsby, Thor Harald; Araya-Ajoy, Yimen G.. (2022) Disentangling the age-dependent causal pathways affecting multiple paternity in house sparrows. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Kvalnes, Thomas; Sæther, Bernt-Erik; Ringsby, Thor Harald; Jensen, Henrik. (2010) Correlates of egg size variation in a population of house sparrow Passer domesticus. NTNU, Institutt for biologi
Masteroppgave
Jakobsen, Marte; Ringsby, Thor Harald; Pedersen, Michael Pepke; Kvalnes, Thomas; Rønning, Bernt. (2018) Spatiotemporal Variation and Fitness Consequences of Blood Hemoglobin Concentration in free-living House Sparrow (Passer domesticus) Nestlings. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Krogfjord, Mari; Ringsby, Thor Harald; Kvalnes, Thomas; Pedersen, Michael Pepke. (2018) Effects of Variation in Egg Size on Maternal Fitness in a Population of House Sparrows (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Bjørsrud, Maren Sofie; Ringsby, Thor Harald; Kvalnes, Thomas; Pepke, Michael Le; Ranke, Peter Sjolte. (2022) Predator-Induced Selection on Phenotypes by Sparrowhawks (Accipiter nisus) in House sparrows (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Pettersen, Nils Håkon; Wright, Jonathan; Jensen, Henrik; Ringsby, Thor Harald; Rønning, Bernt. (2017) Indirect social effects of the individual strategy in producer-scrounger foraging interactions. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Holand, Håkon; Sæther, Bernt-Erik; Ringsby, Thor Harald; Jensen, Henrik. (2009) Effects of the parasitic gapeworm (Syngamus trachea) on survival in house sparrows (Passer domesticus). NTNU, Institutt for biologi
Masteroppgave
Ringsby, Thor Harald; Kvalnes, Thomas; Jensen, Henrik; Røberg, Anja Ås. (2015) Effects of Variation in Egg Size on Offspring Fitness in Populations of House Sparrow (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Pepke, Michael Le; Ringsby, Thor Harald; Jensen, Henrik; Kvalnes, Thomas; Wright, Jonathan. (2021) The ecological and evolutionary role of telomere length in house sparrows. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Dimmen, Malene Vågen; Jenssen, Bjørn Munro; Ciesielski, Tomasz Maciej; Jensen, Henrik; Ringsby, Thor Harald. (2014) Levels and effects of persistent organic pollutants (POPs) on circulating thyroid hormones in house sparrows (Passer domesticus) from Leka, Norway. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Ringsby, Thor Harald; Holand, Håkon; Jensen, Henrik; Pärn, Henrik; Vastveit, Helene Russell. (2013) Spatial and temporal variation in hippoboscid parasitism by Ornithomya chloropus on house sparrows (Passer domesticus) and its effect on survival. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Skøien, Elida Aarstad; Ringsby, Thor Harald; Fossøy, Frode; Hansen, Brage Bremset; Varpe, Øystein; Stokke, Bård Gunnar; Moksnes, Arne. (2015) Causes and Consequences of Breeding Synchrony in the Snow Bunting (Plectrophenax nivalis ). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Johansen, Kristina; Ringsby, Thor Harald; Jensen, Henrik; Kvalnes, Thomas; Tufto, Jarle. (2018) Spatiotemporal variation in laying date and its impact on reproductive success in houses parrows (Passer domesticus). Norwegian University of Science and Technology
Masteroppgave
Kazemi, Maryam; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik; Burnett, Hamish Andrew; Myhre, Ane Marlene. (2023) Demographic changes in female-skewed populations of house sparrow (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Rijcke, Sandra De; Ringsby, Thor Harald; Lorentsen, Svein Håkon. (2015) Foraging behaviour of the European shag during early chick-rearing period; do they follow the marginal value theorem?. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Danielsen, Preben; Ringsby, Thor Harald; Hansen, Brage Bremset; Varpe, Øystein; Veiberg, Vebjørn. (2016) Climate trends, weather fluctuations and calving phenology in Svalbard reindeer (Rangifer tarandus platyrhynchus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Skei, Jørgen; Ringsby, Thor Harald; Lorentsen, Svein Håkon. (2014) Exploring Moulting Common Eider (Somateria mollissima) Escape Responses towards Ship Traffic. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Lindstrøm, Ingrid Marie; Solberg, Erling Johan; Rolandsen, Christer Moe; Bram, Van Moorter; Ringsby, Thor Harald. (2016) No mitigating effects of roadside vegetation clearing on ungulate-vehicle collisions in Nord-Trøndelag. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Wright, Jonathan; Finnøen, Mette Helene; Jensen, Henrik; Ringsby, Thor Harald; Rønning, Bernt. (2016) Personality and pace-of-life behavioral syndromes in a model species, the House Sparrow (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Olsen, Mirja Carola; Wright, Jonathan; Jensen, Henrik; Ringsby, Thor Harald; Rønning, Bernt. (2016) Linking variation in personality and behavioural syndromes to social foraging and producer-scrounger effects in house sparrows (Passer domesticus). Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Ringsby, Thor Harald; Odden, John. (2011) The ecology of a conflict: Eurasian lynx depredation on domestic sheep. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Nossen, Ida; Jenssen, Bjørn Munro; Ciesielski, Tomasz Maciej; Jensen, Henrik; Ringsby, Thor Harald. (2014) Possible Effects of Persistent Organic Pollutants on Steroid Hormone Homeostasis in House Sparrows (Passer domesticus) from Helgeland, Norway. Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Skøien, Elida Arstad; Ringsby, Thor Harald; Hansen, Brage Bremset; Fossøy, Frode; Stokke, Bård Gunnar; Varpe, Øystein. (2015) Causes and Consequences of Breeding Synchrony in the Snow Bunting (Plectrophenax nivalis). Institutt for biologi, Norges teknisk-naturvitenskapelige universitet
Masteroppgave
Stavnås, Veronica Myhr; Nilsen, Erlend Birkeland; Ringsby, Thor Harald. (2018) Demographic determinants of population growth rate in willow ptarmigan (Lagopus lagopus) in Lierne, central Norway. Norges teknisk-naturvitenskapelige universitet (NTNU)
Masteroppgave
Talal, Mohammad; Wright, Jonathan; Jensen, Henrik; Ringsby, Thor Harald. (2018) Individual variation and indirect social effects in Producer-Scrounger behavior in the House Sparrow, Passer domesticus. Norges teknisk-naturvitenskapelige universitet
Masteroppgave

Undervisning

Emner

Formidling