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

Garcia-Martin, E.E. ORCID: https://orcid.org/0000-0003-4807-3287; Serret, P.; Leakey, R.J.G.. 2014 Plankton community and bacterial metabolism in Arctic sea ice leads during summer 2010. Deep Sea Research Part I: Oceanographic Research Papers, 92. 152-161. 10.1016/j.dsr.2014.06.007

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Official URL: http://dx.doi.org/10.1016/j.dsr.2014.06.007

Abstract/Summary

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

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1016/j.dsr.2014.06.007
ISSN:	09670637
Date made live:	04 Oct 2019 15:26 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/525305

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1016/j.dsr.2014.06.007

ISSN:

09670637

Date made live:

04 Oct 2019 15:26 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/525305