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Primary production and bacterioplankton dynamics in the Black Sea during the cold season. IBSS Repository
Sorokin, Yu. I.; Sorokina, O. V..
Phytoplankton primary production, bacterioplankton abundance, chemosynthesis rate and the total bacterioplankton production were measured in the Black Sea during the cold season from early February to April 1991. Primary production was found at its seasonal maximum, which corresponded to the winter – early spring diatom bloom. Photosynthesis rate at the surface varied between 20 and 120 mg C m-3 d-1, with the maxima in the central cyclonic eddies. Integrated primary production in the water column ranged between 0.4 and 1.2. g C m-2 d-1 in the central eddies and between 0.2 g and 0.4 g C m-2 d-1 at their margins. The whole basin annual production was assessed at 80 х 106 t C y-1. Bacterioplankton abundance ranged between 0.8 and 1.1 х 106 cells ml-1 in the...
Tipo: Journal Contribution Palavras-chave: Black Sea; Diatom bloom; Primary production; Bacterioplankton abundance; Chemosynthetic production; Redox interface; Чёрное море; Цветение; Диатомеи; Первичная продукция; Бактериопланктон; Чорне море; Цвітіння; Діатомеї; Первинна продукція; Бактеріопланктон.
Ano: 2008 URL: http://repository.ibss.org.ua/dspace/handle/99011/813
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Flocculation Potential of Estuarine Particles: The Importance of Environmental Factors and of the Spatial and Seasonal Variability of Suspended Particulate Matter ArchiMer
Verney, Romaric; Lafite, Robert; Brun-cottan, Jean-claude.
Estuarine systems are complex environments where seasonal and spatial variations occur in concentrations of suspended particulate matter, in primary constituents, and in organic matter content. This study investigated in the laboratory the flocculation potential of estuarine-suspended particulate matter throughout the year in order to better identify the controlling factors and their hierarchy. Kinetic experiments were performed in the lab with a "video in lab" device, based on a jar test technique, using suspended sediments sampled every 2 months over a 14-month period at three stations in the Seine estuary (France). These sampling stations are representative of (1) the upper estuary, dominated by freshwater, and (2) the middle estuary, characterized by a...
Tipo: Text Palavras-chave: Seine estuary (France); Kolmogorov microscale; Diatom bloom; Floc structure; Cohesive sediment; Flocculation.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6631.pdf
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