Models of Plankton Community Changes during a Warm Water Anomaly in Arctic Waters Show Altered Trophic Pathways with Minimal Changes in Carbon Export

摘要: Carbon flow through pelagic food webs is an expression of the composition, biomass and activity phytoplankton as primary producers. In near future, severe environmental changes in Arctic Ocean are expected to lead modifications communities. Here, we used a combination linear inverse modeling ecological network analysis study before, during, after anomalous warm water event eastern Fram Strait West Spitsbergen Current (WSC) that resulted shift from diatoms flagellates during summer (June–July). The model predicts substantial differences pathways carbon diatom- vs. Phaeocystis/nanoflagellate-dominated communities, but relatively small export. suggests change zooplankton community increasing microzooplankton abundance switching meso- macrozooplankton feeding strict herbivory omnivory, detritivory coprophagy. When cells dominated, pathway web was longer microbial loop more active. Furthermore, one step added mesozooplankton, higher trophic levels available via detritus or microzooplankton. Model results highlight how specific climate scenario, do not necessarily reduction