Plankton community and bacterial metabolism in Arctic sea ice leads during summer 2010

摘要: Microbial plankton metabolism was examined during summer 2010 in sea ice-influenced waters of the Fram Strait, eastern Arctic Ocean. Rates gross primary production and community respiration were tightly coupled over a wide range values (33±3–143±6 20±3–126±6 mmol O2 m−2 −1, respectively) leading to prevalence positive net production. The high variability respiration, similar that production, suggests heterotrophic may exhibit significant response environmental change. Bacterial assessed at time scales bacterial measurements, by determining vivo INT reduction capacity without pre-filtering community. Bacteria seem play major role total contributing between 5% 61% indicating fraction organic carbon planktonic food webs could flow through these microbes.