Allochthonous Carbon - a major driver of bacterioplankton production in the subarctic Northern Baltic Sea
Heterotrophic bacteria are, in many aquatic systems, reliant on autochthonous organic carbon as their energy source. One exception is low-productive humic lakes, where allochthonous dissolved organic matter (ADOM) is the major driver. We hypothesized that bacterial production (BP) is similarly regul...
Published in: | Microbial Ecology |
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Language: | English |
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2016
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-117966 https://doi.org/10.1007/s00248-015-0714-4 |
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ftumeauniv:oai:DiVA.org:umu-117966 2023-10-09T21:49:14+02:00 Allochthonous Carbon - a major driver of bacterioplankton production in the subarctic Northern Baltic Sea Figueroa, Daniela Rowe, Owen Paczkowska, Joanna Legrand, Catherine Andersson, Agneta 2016 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-117966 https://doi.org/10.1007/s00248-015-0714-4 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Umeå universitet, Umeå marina forskningscentrum (UMF) Department of Food and Environmental Sciences, Division of Microbiology and Biotechnology, University of Helsinki, Helsinki, Finland Microbial Ecology, 0095-3628, 2016, 71:4, s. 789-801 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-117966 doi:10.1007/s00248-015-0714-4 ISI:000373683000001 Scopus 2-s2.0-84949972178 info:eu-repo/semantics/openAccess Allochthonous organic matter carbon utilization bacterioplankton production Sub-arctic estuary Baltic Sea Ecology Ekologi Article in journal info:eu-repo/semantics/article text 2016 ftumeauniv https://doi.org/10.1007/s00248-015-0714-4 2023-09-22T13:57:39Z Heterotrophic bacteria are, in many aquatic systems, reliant on autochthonous organic carbon as their energy source. One exception is low-productive humic lakes, where allochthonous dissolved organic matter (ADOM) is the major driver. We hypothesized that bacterial production (BP) is similarly regulated in subarctic estuaries that receive large amounts of riverine material. BP and potential explanatory factors were measured during May–August 2011 in the subarctic Råne Estuary, northern Sweden. The highest BP was observed in spring, concomitant with the spring river-flush and the lowest rates occurred during summer when primary production (PP) peaked. PLS correlations showed that ∼60 % of the BP variation was explained by different ADOM components, measured as humic substances, dissolved organic carbon (DOC) and coloured dissolved organic matter (CDOM). On average, BP was threefold higher than PP. The bioavailability of allochthonous dissolved organic carbon (ADOC) exhibited large spatial and temporal variation; however, the average value was low, ∼2 %. Bioassay analysis showed that BP in the near-shore area was potentially carbon limited early in the season, while BP at seaward stations was more commonly limited by nitrogen-phosphorus. Nevertheless, the bioassay indicated that ADOC could contribute significantly to the in situ BP, ∼60 %. We conclude that ADOM is a regulator of BP in the studied estuary. Thus, projected climate-induced increases in river discharge suggest that BP will increase in subarctic coastal areas during the coming century. Article in Journal/Newspaper Arctic Northern Sweden Subarctic Umeå University: Publications (DiVA) Arctic Spring River ENVELOPE(-138.627,-138.627,69.281,69.281) Microbial Ecology 71 4 789 801 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
Allochthonous organic matter carbon utilization bacterioplankton production Sub-arctic estuary Baltic Sea Ecology Ekologi |
spellingShingle |
Allochthonous organic matter carbon utilization bacterioplankton production Sub-arctic estuary Baltic Sea Ecology Ekologi Figueroa, Daniela Rowe, Owen Paczkowska, Joanna Legrand, Catherine Andersson, Agneta Allochthonous Carbon - a major driver of bacterioplankton production in the subarctic Northern Baltic Sea |
topic_facet |
Allochthonous organic matter carbon utilization bacterioplankton production Sub-arctic estuary Baltic Sea Ecology Ekologi |
description |
Heterotrophic bacteria are, in many aquatic systems, reliant on autochthonous organic carbon as their energy source. One exception is low-productive humic lakes, where allochthonous dissolved organic matter (ADOM) is the major driver. We hypothesized that bacterial production (BP) is similarly regulated in subarctic estuaries that receive large amounts of riverine material. BP and potential explanatory factors were measured during May–August 2011 in the subarctic Råne Estuary, northern Sweden. The highest BP was observed in spring, concomitant with the spring river-flush and the lowest rates occurred during summer when primary production (PP) peaked. PLS correlations showed that ∼60 % of the BP variation was explained by different ADOM components, measured as humic substances, dissolved organic carbon (DOC) and coloured dissolved organic matter (CDOM). On average, BP was threefold higher than PP. The bioavailability of allochthonous dissolved organic carbon (ADOC) exhibited large spatial and temporal variation; however, the average value was low, ∼2 %. Bioassay analysis showed that BP in the near-shore area was potentially carbon limited early in the season, while BP at seaward stations was more commonly limited by nitrogen-phosphorus. Nevertheless, the bioassay indicated that ADOC could contribute significantly to the in situ BP, ∼60 %. We conclude that ADOM is a regulator of BP in the studied estuary. Thus, projected climate-induced increases in river discharge suggest that BP will increase in subarctic coastal areas during the coming century. |
format |
Article in Journal/Newspaper |
author |
Figueroa, Daniela Rowe, Owen Paczkowska, Joanna Legrand, Catherine Andersson, Agneta |
author_facet |
Figueroa, Daniela Rowe, Owen Paczkowska, Joanna Legrand, Catherine Andersson, Agneta |
author_sort |
Figueroa, Daniela |
title |
Allochthonous Carbon - a major driver of bacterioplankton production in the subarctic Northern Baltic Sea |
title_short |
Allochthonous Carbon - a major driver of bacterioplankton production in the subarctic Northern Baltic Sea |
title_full |
Allochthonous Carbon - a major driver of bacterioplankton production in the subarctic Northern Baltic Sea |
title_fullStr |
Allochthonous Carbon - a major driver of bacterioplankton production in the subarctic Northern Baltic Sea |
title_full_unstemmed |
Allochthonous Carbon - a major driver of bacterioplankton production in the subarctic Northern Baltic Sea |
title_sort |
allochthonous carbon - a major driver of bacterioplankton production in the subarctic northern baltic sea |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2016 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-117966 https://doi.org/10.1007/s00248-015-0714-4 |
long_lat |
ENVELOPE(-138.627,-138.627,69.281,69.281) |
geographic |
Arctic Spring River |
geographic_facet |
Arctic Spring River |
genre |
Arctic Northern Sweden Subarctic |
genre_facet |
Arctic Northern Sweden Subarctic |
op_relation |
Microbial Ecology, 0095-3628, 2016, 71:4, s. 789-801 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-117966 doi:10.1007/s00248-015-0714-4 ISI:000373683000001 Scopus 2-s2.0-84949972178 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00248-015-0714-4 |
container_title |
Microbial Ecology |
container_volume |
71 |
container_issue |
4 |
container_start_page |
789 |
op_container_end_page |
801 |
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1779312251682947072 |