Blar i Articles på emneord "planteplankton"
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Can silicate and turbulence regulate the vertical flux of biogenic matter? A mesocosm study
(Journal article; Peer reviewed, 2001-07-31)The effects of silicate and turbulence on the vertical flux of biogenic matter were studied in mesocosms. The experiment consisted of eight 27 m3 enclosures all fertilised with nitrate and phosphate (NP), while 4 of the ... -
Grazing by the heterotrophic dinoflagellate Protoperidinium steinii on a Ceratium bloom
(Journal article; Peer reviewed, 2002-01-11)Variations in heterotrophic dinoflagellate populations at a station in the inner Oslofjord, Norway, were studied by sampling at ca 4 d intervals. Cells were concentrated from 1 l samples by filtration before being counted ... -
Grazing Rates of Calanus finmarchicus on Thalassiosira weissflogii Cultured under Different Levels of Ultraviolet Radiation
(Journal article; Peer reviewed, 2011-10-18)UVB alters photosynthetic rate, fatty acid profiles and morphological characteristics of phytoplankton. Copepods, important grazers of primary production, select algal cells based upon their size, morphological traits, ... -
Non-linear dynamics in marine-phytoplankton population systems
(Journal article; Peer reviewed, 2004-06-08)Although non-linear density-dependence has been widely emphasized in population dynamics studies, the existence of non-linear exogenous forces have been less explored. In articular, we propose that the formulation of ... -
Primary production enhancement by artificial upwelling in a western Norwegian fjord
(Journal article; Peer reviewed, 2007-12-20)To enhance primary production rate for shellfish cultivation in fjords, a large-scale artificial upwelling experiment was carried out in a western Norwegian fjord during the summers of 2004 and 2005. Pumping 2 m3 s–1 ... -
UV transmission in Norwegian marine waters: controlling factors and possible effects on primary production and vertical distribution of phytoplankton
(Journal article; Peer reviewed, 2005-12-23)We investigated the ultraviolet radiation (UVR) transmission properties of Norwegian oceanic, coastal and fjord waters, and how they influence the primary production and vertical distribution of phytoplankton. Values of ... -
Zooplankton reproduction in the Barents Sea vertical distribution of eggs and nauplii of Calanus finmarchicus in relation to spring phytoplankton development
(Chapter, 1989)Variable influence of ice melting on water column stabilization causes a large variation in timing of the spring phytoplankton bloom in the central Barents Sea. During two cruises in April 1986 and May-June 1987 situations ...