Development of a subsurface chlorophyll maximum at the entrance to the Gulf of Finland, Baltic Sea
Article Abstract:
A subsurface Chl a maximum formed at the entrance to the Gulf of Finland during a case study covering 12 days in Jul-Aug 1994. Wind conditions were weak and hydrodynamic activity was minimal. The decaying phase had set in after an intense bloom of diazotrophic cyanobacteria. The pelagial system control was 'top-down.' Grazing of ciliates on specific sizes of the dominant flagellates Chrysochromulina and Ochromonas in the upper layer was responsible for about half of the decrease of Chl a. The grazing occurred in the layer above the thermocline, while the flagellates inhabited both layers, thus creating a subsurface Chl a maximum.
Publication Name: Limnology and Oceanography
Subject: Earth sciences
ISSN: 0024-3590
Year: 1998
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A light-scattering matrix for unicellular marine phytoplankton
Article Abstract:
Intracellular structures of unicellular marine phytoplankton affect the angular distribution of total scattered light intensity, especially for the medium range of scattering angles. Experiments were conducted with living cultures of the phytoplankton species Chlorella vulgaris, Chlorella kesleri and Chroococcus minor, and with cultures treated chemically by boiling in 5% NaOH and physically by ultrasound. The treatments change the cells' internal structures and the scattering matrix functional also changes.
Publication Name: Limnology and Oceanography
Subject: Earth sciences
ISSN: 0024-3590
Year: 1998
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