Biomass dynamics of the phytoplankton under impact of the nutrient

Abakumov, A.I.; Силкин, В. А.; Паутова, Л. А.

doi:10.1016/j.proenv.2012.01.010

Cited by 2 publications

(1 citation statement)

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“…The central abiotic hypothesis states that large cells can accumulate nutrients and gradually use them in conditions of scarcity. Such species can dominate in the periodic provision of nutrients [22,[81][82][83][84]. The weakness of this hypothesis is that such a mechanism can work for two-three cell generations (several days) [17], while the time between fluxes of nutrients may be longer.…”

Section: Annual Dynamics Of Phytoplanktonmentioning

confidence: 99%

Annual Dynamics of Phytoplankton in the Black Sea in Relation to Wind Exposure

Силкин

Mikaelyan

Паутова

et al. 2021

JMSE

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Studies of the annual dynamics of phytoplankton in the NE Black Sea at two stations on the shelf and the continental slope were conducted in 2016, 2017, and 2019. The species composition of phytoplankton has not undergone significant changes compared to previous decades. The coccolithophore Emiliania huxleyi, small flagellates, and diatoms determined the abundance of phytoplankton; and diatoms, coccolithophores, and dinoflagellates determined the total biomass. The annual dynamics of the satellite-derived chlorophyll-a showed peaks in spring and autumn, and sometimes in summer. During the stratified water column period, strong winds in most cases led to a detectible increase in chlorophyll-a. The annual dynamics of phytoplankton followed the pattern: small diatoms (spring) → coccolithophores (late spring, early summer) → large diatoms (summer, autumn). Such a pattern was typical for the previous decades. Coccolithophores dominated in weak SE winds, diatoms in NE winds. The combined effect of sustained offshore wind and strong current can cause diatom blooms during stratified water, even if the wind velocity is moderate.

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