Macrozooplankton of the Arctic - The Kara Sea in relation to environmental conditions
作者： Vladimir G. Dvoretsky , Alexander G. Dvoretsky
DOI: 10.1016/J.ECSS.2017.02.008
关键词: Mertensia ovum 、 Biomass (ecology) 、 Oceanography 、 Parasagitta elegans 、 Estuary 、 Canonical correspondence analysis 、 Arctic 、 Ecology 、 Biology 、 Abundance (ecology) 、 Krill
摘要: Abstract The distribution, abundance, biomass and diversity of macrozooplankton were studied in relation to hydrological conditions the Kara Sea during July–September 2012. Multivariate analysis density data identified a clear division between community structure deepwater, shelf estuarine zones. first assemblage along Novaya Zemlya Archipelago western part was characterized by high total abundance/biomass (80,450 ind. m −2 /16.9 g dry mass ) dominated Calanus glacialis , C. hyperboreus C. finmarchicus Metridia longa . second central similar species composition but differed term abundance (15,300 /2.7 g DM ). lowest (2130 /0.3 g measured third assemblage, Ob Shallow region, which presence taxa heavily influenced freshwater discharge. Parasagitta elegans Mertensia ovum Aglantha digitale Aeginopsis laurentii Dimophyes arctica Clione limacina present mainly as young stages suggesting reproduction these July–August. Canonical correspondence revealed that factors (salinity temperature) geographical variables (latitude, longitude depth) main predictors structures Sea. Comparison our with other regions Arctic demonstrated similarity taxonomic major large-bodied groups (i.e. amphipods, krill, medusae, pteropods, chaetognaths).
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