Changes in food web dynamics of low Arctic ponds with varying content of dissolved organic carbon
An influx of terrestrial dissolved organic carbon (DOC) into freshwater habitats can regulate a range of ecosystem characteristics, from water clarity to productivity. To understand the extent to which DOC can regulate ecosystem functioning, we conducted a survey to determine the source of DOC in lo...
Published in: | Arctic, Antarctic, and Alpine Research |
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ftdoajarticles:oai:doaj.org/article:5fe485245fc045f3a6272151b515173a 2023-05-15T14:14:29+02:00 Changes in food web dynamics of low Arctic ponds with varying content of dissolved organic carbon Heather L. Mariash Matteo Cazzanelli Milla Rautio Ladislav Hamerlik Matthew J. Wooller Kirsten S. Christoffersen 2018-01-01T00:00:00Z https://doi.org/10.1080/15230430.2017.1414472 https://doaj.org/article/5fe485245fc045f3a6272151b515173a EN eng Taylor & Francis Group http://dx.doi.org/10.1080/15230430.2017.1414472 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2017.1414472 https://doaj.org/article/5fe485245fc045f3a6272151b515173a Arctic, Antarctic, and Alpine Research, Vol 50, Iss 1 (2018) arctic allochthony freshwater ecology bayesian mixing models plankton stable isotope Environmental sciences GE1-350 Ecology QH540-549.5 article 2018 ftdoajarticles https://doi.org/10.1080/15230430.2017.1414472 2022-12-31T07:37:05Z An influx of terrestrial dissolved organic carbon (DOC) into freshwater habitats can regulate a range of ecosystem characteristics, from water clarity to productivity. To understand the extent to which DOC can regulate ecosystem functioning, we conducted a survey to determine the source of DOC in low Arctic ponds close to the Arctic Circle (Kangerlussuaq, Greenland), including its role in food web dynamics. We used a multiple element (carbon, nitrogen, and hydrogen) stable isotope approach to examine the proportional contribution of different sources to aquatic consumers in nine arctic ponds that spanned a broad gradient of DOC (6.6–60.1 mgL-1). Our results show that benthic and pelagic primary production decreased along a gradient of increasing DOC content. Additionally, the changes in the organic matter pool with increasing DOC translated into changes in consumer resource use. We found significant differences in resource use between species. All consumers relied on benthic autotrophic material when DOC was low; but when DOC was high some consumers changed their diet. Collectively, our findings demonstrate how the concentration of DOC influences aquatic production and our study can be used as a baseline to predict how the aquatic food web may respond to regionally changing DOC concentrations. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Arctic Greenland Kangerlussuaq Directory of Open Access Journals: DOAJ Articles Arctic Greenland Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) Arctic, Antarctic, and Alpine Research 50 1 S100016 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic allochthony freshwater ecology bayesian mixing models plankton stable isotope Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
arctic allochthony freshwater ecology bayesian mixing models plankton stable isotope Environmental sciences GE1-350 Ecology QH540-549.5 Heather L. Mariash Matteo Cazzanelli Milla Rautio Ladislav Hamerlik Matthew J. Wooller Kirsten S. Christoffersen Changes in food web dynamics of low Arctic ponds with varying content of dissolved organic carbon |
topic_facet |
arctic allochthony freshwater ecology bayesian mixing models plankton stable isotope Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
An influx of terrestrial dissolved organic carbon (DOC) into freshwater habitats can regulate a range of ecosystem characteristics, from water clarity to productivity. To understand the extent to which DOC can regulate ecosystem functioning, we conducted a survey to determine the source of DOC in low Arctic ponds close to the Arctic Circle (Kangerlussuaq, Greenland), including its role in food web dynamics. We used a multiple element (carbon, nitrogen, and hydrogen) stable isotope approach to examine the proportional contribution of different sources to aquatic consumers in nine arctic ponds that spanned a broad gradient of DOC (6.6–60.1 mgL-1). Our results show that benthic and pelagic primary production decreased along a gradient of increasing DOC content. Additionally, the changes in the organic matter pool with increasing DOC translated into changes in consumer resource use. We found significant differences in resource use between species. All consumers relied on benthic autotrophic material when DOC was low; but when DOC was high some consumers changed their diet. Collectively, our findings demonstrate how the concentration of DOC influences aquatic production and our study can be used as a baseline to predict how the aquatic food web may respond to regionally changing DOC concentrations. |
format |
Article in Journal/Newspaper |
author |
Heather L. Mariash Matteo Cazzanelli Milla Rautio Ladislav Hamerlik Matthew J. Wooller Kirsten S. Christoffersen |
author_facet |
Heather L. Mariash Matteo Cazzanelli Milla Rautio Ladislav Hamerlik Matthew J. Wooller Kirsten S. Christoffersen |
author_sort |
Heather L. Mariash |
title |
Changes in food web dynamics of low Arctic ponds with varying content of dissolved organic carbon |
title_short |
Changes in food web dynamics of low Arctic ponds with varying content of dissolved organic carbon |
title_full |
Changes in food web dynamics of low Arctic ponds with varying content of dissolved organic carbon |
title_fullStr |
Changes in food web dynamics of low Arctic ponds with varying content of dissolved organic carbon |
title_full_unstemmed |
Changes in food web dynamics of low Arctic ponds with varying content of dissolved organic carbon |
title_sort |
changes in food web dynamics of low arctic ponds with varying content of dissolved organic carbon |
publisher |
Taylor & Francis Group |
publishDate |
2018 |
url |
https://doi.org/10.1080/15230430.2017.1414472 https://doaj.org/article/5fe485245fc045f3a6272151b515173a |
long_lat |
ENVELOPE(-55.633,-55.633,72.633,72.633) |
geographic |
Arctic Greenland Kangerlussuaq |
geographic_facet |
Arctic Greenland Kangerlussuaq |
genre |
Antarctic and Alpine Research Arctic Arctic Greenland Kangerlussuaq |
genre_facet |
Antarctic and Alpine Research Arctic Arctic Greenland Kangerlussuaq |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 50, Iss 1 (2018) |
op_relation |
http://dx.doi.org/10.1080/15230430.2017.1414472 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 1523-0430 1938-4246 doi:10.1080/15230430.2017.1414472 https://doaj.org/article/5fe485245fc045f3a6272151b515173a |
op_doi |
https://doi.org/10.1080/15230430.2017.1414472 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
50 |
container_issue |
1 |
container_start_page |
S100016 |
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1766286924035653632 |