Nitrogen uptake in the phytoplankton of Oslofjorden, Norway: effects of environmental and biological covariates
Tobiesen, A. (1987). Nitrogen uptake in the phytoplankton of Oslofjorden, Norway: effects of environmental and biological covariates. Sarsia 72(3-4): 299-311
In: Sarsia. University of Bergen. Universitetsforlaget: Bergen. ISSN 0036-4827; e-ISSN 1503-1128, more
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| Keywords |
Aquatic communities > Plankton > Phytoplankton
Chemical compounds > Nitrogen compounds > Ammonia
Chemical compounds > Nitrogen compounds > Nitrates
Cycles > Chemical cycles > Geochemical cycle > Biogeochemical cycle > Nutrient cycles > Nitrogen cycle
Environmental conditions
Nutrient uptake
Ammonia Brünnich, 1771 [WoRMS]
Marine/Coastal |
| Abstract |
The uptake rates of nitrate and ammonium at six depths at one station in Oslofjorden were measured on eleven dates by means of the 15N-isotope method. Other measured variables were nitrate and ammonium concentration, light extinction and irradiance, temperature, salinity, phytoplankton composition and biomass, mean cell volume, chlorophyll a, and particulate nitrogen. Statistical analysis showed that physical and chemical variables were more important than biological ones in explaining N-uptake. |
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