Bacterial community succession and metabolism during the early stages of POC degradation in the Western Arctic Ocean
Marine bacterial community structure and function have been observed to shift during fluctuating environmental conditions, suggesting that distinct members of the community adapt to the abundance and composition of available nutrients and carbon. We measured changes in bacterial diversity and metabo...
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ftawi:oai:epic.awi.de:40450 2023-05-15T14:26:39+02:00 Bacterial community succession and metabolism during the early stages of POC degradation in the Western Arctic Ocean Mikan, Molly Salter, Ian Nunn, Brook L. Harvey, H. R. 2014-02-27 https://epic.awi.de/id/eprint/40450/ http://www.sgmeet.com/osm2014/viewabstract.asp?AbstractID=16485 https://hdl.handle.net/10013/epic.47522 unknown Mikan, M. , Salter, I. orcid:0000-0002-4513-0314 , Nunn, B. L. and Harvey, H. R. (2014) Bacterial community succession and metabolism during the early stages of POC degradation in the Western Arctic Ocean , 2014 Ocean Sciences Meeting 2014, 23 February 2014 - 28 February 2014 . hdl:10013/epic.47522 EPIC32014 Ocean Sciences Meeting 2014, 2014-02-23-2014-02-28 Conference notRev 2014 ftawi 2021-12-24T15:41:24Z Marine bacterial community structure and function have been observed to shift during fluctuating environmental conditions, suggesting that distinct members of the community adapt to the abundance and composition of available nutrients and carbon. We measured changes in bacterial diversity and metabolic response of natural microbial consortia during early degradation of complex sources of particulate organic carbon (POC) in polar waters. The bacterial populations were representative of spatially disconnected communities, having been collected from the chlorophyll maximum and bottom waters of the Bering Strait and Chukchi Sea, respectively. Shifts in community composition, nitrogen assimilation and proteomic expression of the free-living Arctic bacteria were followed in ten-day, parallel incubation experiments with natural and isotopically labeled algal amendments under near in situ conditions. Based upon 16S rRNA gene sequencing and detailed biochemical composition, we are examining if initial bacterial community structure and succession impact early POC degradation kinetics. Additionally, we are investigating if there are phylogenetic niches for metabolic function driving POC degradation by western arctic marine bacteria. Conference Object Arctic Arctic Arctic Ocean Bering Strait Chukchi Chukchi Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Bering Strait Chukchi Sea |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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description |
Marine bacterial community structure and function have been observed to shift during fluctuating environmental conditions, suggesting that distinct members of the community adapt to the abundance and composition of available nutrients and carbon. We measured changes in bacterial diversity and metabolic response of natural microbial consortia during early degradation of complex sources of particulate organic carbon (POC) in polar waters. The bacterial populations were representative of spatially disconnected communities, having been collected from the chlorophyll maximum and bottom waters of the Bering Strait and Chukchi Sea, respectively. Shifts in community composition, nitrogen assimilation and proteomic expression of the free-living Arctic bacteria were followed in ten-day, parallel incubation experiments with natural and isotopically labeled algal amendments under near in situ conditions. Based upon 16S rRNA gene sequencing and detailed biochemical composition, we are examining if initial bacterial community structure and succession impact early POC degradation kinetics. Additionally, we are investigating if there are phylogenetic niches for metabolic function driving POC degradation by western arctic marine bacteria. |
format |
Conference Object |
author |
Mikan, Molly Salter, Ian Nunn, Brook L. Harvey, H. R. |
spellingShingle |
Mikan, Molly Salter, Ian Nunn, Brook L. Harvey, H. R. Bacterial community succession and metabolism during the early stages of POC degradation in the Western Arctic Ocean |
author_facet |
Mikan, Molly Salter, Ian Nunn, Brook L. Harvey, H. R. |
author_sort |
Mikan, Molly |
title |
Bacterial community succession and metabolism during the early stages of POC degradation in the Western Arctic Ocean |
title_short |
Bacterial community succession and metabolism during the early stages of POC degradation in the Western Arctic Ocean |
title_full |
Bacterial community succession and metabolism during the early stages of POC degradation in the Western Arctic Ocean |
title_fullStr |
Bacterial community succession and metabolism during the early stages of POC degradation in the Western Arctic Ocean |
title_full_unstemmed |
Bacterial community succession and metabolism during the early stages of POC degradation in the Western Arctic Ocean |
title_sort |
bacterial community succession and metabolism during the early stages of poc degradation in the western arctic ocean |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/40450/ http://www.sgmeet.com/osm2014/viewabstract.asp?AbstractID=16485 https://hdl.handle.net/10013/epic.47522 |
geographic |
Arctic Arctic Ocean Bering Strait Chukchi Sea |
geographic_facet |
Arctic Arctic Ocean Bering Strait Chukchi Sea |
genre |
Arctic Arctic Arctic Ocean Bering Strait Chukchi Chukchi Sea |
genre_facet |
Arctic Arctic Arctic Ocean Bering Strait Chukchi Chukchi Sea |
op_source |
EPIC32014 Ocean Sciences Meeting 2014, 2014-02-23-2014-02-28 |
op_relation |
Mikan, M. , Salter, I. orcid:0000-0002-4513-0314 , Nunn, B. L. and Harvey, H. R. (2014) Bacterial community succession and metabolism during the early stages of POC degradation in the Western Arctic Ocean , 2014 Ocean Sciences Meeting 2014, 23 February 2014 - 28 February 2014 . hdl:10013/epic.47522 |
_version_ |
1766299931918729216 |