Bakgrunn og aktiviteter
Biological oceanography with emphasis on primary production as a function of nutrient supply,light and variations in marine climate. Pioneered integration of marine laboratory and field investigations in Norway, including studies of chemical composition of phytoplankton using unialgal cultures. Also specialised in the photobiology and bio-optics of marine phytoplankton, with emphasis on photo-acclimation and P vs E curves. The field activity has, besides local waters been concentrated on the ecology of the Barents Sea and the Southern Ocean.
Vitenskapelig, faglig og kunstnerisk arbeid
Et utvalg av nyere tidsskriftspublikasjoner, kunstneriske produksjoner, bok, inklusiv bokdeler og rapport-del. Se alle publikasjoner i databasen
- (2014) A spectrally-resolved light propagation model for aquatic systems: Steps toward parameterizing primary production. Journal of Marine Systems. vol. 130.
- (2014) Optical properties of CDOM across the Polar Front in the Barents Sea: Origin, distribution and significance. Journal of Marine Systems. vol. 130.
- (2014) Optical impact of an Emiliania huxleyi bloom in the frontal region of the Barents Sea. Journal of Marine Systems. vol. 130.
- (2014) Accounting for the occupation of the marine environment as a natural resource in life cycle assessment: An exergy based approach. Resources, Conservation and Recycling. vol. 91.
- (2013) Phytoplankton production and growth regulation in the Subarctic North Atlantic: A comparative study of the Labrador Sea-Labrador/Newfoundland shelves and Barents/Norwegian/Greenland seas and shelves. Progress in Oceanography. vol. 114.
- (2013) Microbial biogeography during austral summer 2007 in the surface waters around the South Shetland Islands, Antarctica. Aquatic Microbial Ecology. vol. 70.
- (2010) Natural iron enrichment around the Antarctic Peninsula in the Southern Ocean. Biogeosciences. vol. 7 (1).
- (2009) Transregional linkages in the North-Eastern Atlantic - an end-to-end analysis of pelagic ecosystems. Oceanography and Marine Biology: An Annual Review. vol. 47.
- (2008) Rate of O2 production derived from pulse-amplitude-modulated fluorescence: Testing three biooptical approaches against measured O2-production rate. Journal of Phycology. vol. 44 (3).
- (2007) Biooptical characteristics of PSII and PSI in 33 species (13 pigment groups) of marine phytoplankton, and the relevance for pulse-amplitude-modulated and fast-repetition-rate fluorometry. Journal of Phycology. vol. 43.
- (2006) Climate variability and physical forcing of the food webs and the carbon budget on panarctic shelves. Progress in Oceanography. vol. 71.
- (2006) Photosynthesis-induced phosphate precipitation in seawater: ecological implications for phytoplankton. Marine Ecology Progress Series. vol. 319.
- (2004) Iron enrichment and photoreduction of iron under PAR and UV in the presence of hydrocarboxylic acid: Implications for phytoplankton growth in the Southern Ocean. Deep-sea research. Part II, Topical studies in oceanography. vol. 51.
- (2002) Iron speciation in the Trondheim fjord from the perspective of iron limitation for phytoplankton. Estuarine, Coastal and Shelf Science. vol. 55.
- (2001) (Proceedings of the 9th International conference on Harmful Algal Blooms. Hobart, Tasmania, 7-11 February 20). Structuration of marine phytoplankton communities subjected to different levels of N, P and Si limitation in a mesocosm experiment (summary paper). Phycologia.
- (2001) (Proceedings of the 9th International conference on Harmful Algal Blooms. Hobart, Tasmania, 7-11 February 2000.) Effect of polyamines on growth and toxicity of Chrysochromulina leadbeateri, Haptophytae. Phycologia.
- (1997) The significance of intracellular self-shading on the bio-optical properties of brown, red and green macroalgal species. Journal of Phycology. vol. 33.
- (1997) The significance of intracellular self-shadingon the bio-optical properties of brown, red and green macroalgal species. Journal of Phycology. vol. 33.
- (1997) Parameters of photosynthesis: definitions, theory and interpretation of results. Journal of Plankton Research. vol. 19.
- (1996) Light harvesting in bloom-forming marine phytoplankton: Species-specifity and photoacclimation,. Scientia Marina. vol. 60 (Supl. 1).