Phytoplankton Production at Two Stations in Lindåspollene, a Norwegian Land-locked Fjord, and Limiting Nutrients Studied by Two Kinds of Bio-assays
| Autor: | Christer Lännergren |
|---|---|
| Rok vydání: | 1978 |
| Předmět: |
Chlorophyll a
geography geography.geographical_feature_category biology Ecology Temperature salinity diagrams Fjord Aquatic Science Plankton biology.organism_classification chemistry.chemical_compound Nutrient Algae chemistry Nitrate Environmental chemistry Phytoplankton Environmental science General Agricultural and Biological Sciences Ecology Evolution Behavior and Systematics |
| Zdroj: | Internationale Revue der gesamten Hydrobiologie und Hydrographie. 63:57-75 |
| ISSN: | 1522-2632 0020-9309 |
| Popis: | At two stations in a Norwegian land-locked fjord, one more and one less influenced by freshwater run-off, studies were made of the primary production, chlorophyll a concentrations, and the quantity and composition of phytoplankton. Samples were taken for analyses of phosphate, nitrate, and silicate, and temperature and salinity were measured. Two kinds of bio-assays were performed: combinations of phosphate, nitrate, and silicate were added to I, natural water incubated in situ, and II, natural water incubated in the laboratory. Lower salinities and higher concentrations of all nutrients were found at the station most influenced by fresh-water. Although the bio-assays indicated that nitrogen was the main limiting nutrient, the biological parameters showed no consistent differences between the two stations. The similarity is tentatively explained by the growth of nanoplankton algae, partly depending on nutrients other than those analysed. |
| Databáze: | OpenAIRE |
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