Measurements of biomass and grazing for three size classes of mesozooplankton were carried out at two drifting stations: at 59°N, 20°W during a tracer release experiment, and at 37°N, 19°W at a conventional drifting station. Mesozooplankton biomass at 59°N did not vary between day and night (6.7 and 6.4 mg C m–3 for night and day samples, respectively). At 37°N, carbon biomass was much lower an...

The variability in zooplankton fatty acid composition may be an indicator of larval fish habitat quality as fatty acids are linked to fish larval growth and survival. We sampled an anadromous fish nursery, the Chowan River, during spring of 2013 in order to determine how the seston fatty acid composition varied in comparison with the zooplankton community composition and fatty acid composition ...

The impact of atmospheric deposition on deep-ocean carbon export in the subtropical Northwest Pacific remains poorly evaluated. Using sediment trap data and a newly improved biogeochemical model, we show that iron winter spring nitrogen summer fall are important drivers for seasonal variability particulate organic (POC) flux. Nitrogen can stimulate pico-plankton growth fall, which leads to incr...

To examine the grazing effects of copepod-dominated mesozooplankton on heterotrophic microbial communities, four mesocosm experiments using gradients of zooplankton abundance were carried out at a coastal marine site. The responses of different protist groups (nanoflagellates, ciliates) and bacterioplankton in terms of abundance and additionally, for bacteria, diversity, production, and exoenzy...

The boundary zone between two different hydrological regimes is often a biologically enriched environment with distinct planktonic communities. In the center of the Amazon River basin, muddy white water of the Amazon River meets with black water of the Negro River, creating a conspicuous visible boundary spanning over 10 km along the Amazon River. Here, we tested the hypothesis that the conflue...

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The aim of the study was to trace influence several abiotic factors on distribution mesozooplankton community from Black Sea. Sampling performed in cold and warm seasons 2013-2020, stations located three sectors Romanian Sea coast (northern-N, central-C, southern-S). After determining species composition, abundance, biomass, results were subjected statistical analysis. A total 25 taxa identifie...

 Mnemiopsis leidyi which was accidentally introduced into the Caspian Sea in 1999 and since then has colonized extensively. The horizontal distribution of M. leidyi and dominant mesozooplankton species was investigated in the south western Caspian Sea during February, May, July and November 2008. The average number and biomass of M. leidyi were in the same range (ca 200 individuals.m-3 (...