Landscape determinants of pelagic and benthic primary production in northern lakes
Abstract Global change affects gross primary production (GPP) in benthic and pelagic habitats of northern lakes by influencing catchment characteristics and lake water biogeochemistry. However, how changes in key environmental drivers manifest and impact total (i.e., benthic + pelagic) GPP and the p...
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crwiley:10.1111/gcb.16409 2024-09-15T18:26:13+00:00 Landscape determinants of pelagic and benthic primary production in northern lakes Puts, Isolde Callisto Ask, Jenny Siewert, Matthias B. Sponseller, Ryan A. Hessen, Dag O. Bergström, Ann‐Kristin Knut och Alice Wallenbergs Stiftelse Svenska Forskningsrådet Formas 2022 http://dx.doi.org/10.1111/gcb.16409 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16409 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16409 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Global Change Biology volume 28, issue 23, page 7063-7077 ISSN 1354-1013 1365-2486 journal-article 2022 crwiley https://doi.org/10.1111/gcb.16409 2024-08-13T04:14:46Z Abstract Global change affects gross primary production (GPP) in benthic and pelagic habitats of northern lakes by influencing catchment characteristics and lake water biogeochemistry. However, how changes in key environmental drivers manifest and impact total (i.e., benthic + pelagic) GPP and the partitioning of total GPP between habitats represented by the benthic share ( autotrophic structuring ) is unclear. Using a dataset from 26 shallow lakes located across Arctic, subarctic, and boreal northern Sweden, we investigate how catchment properties (air temperature, land cover, hydrology) affect lake physico‐chemistry and patterns of total GPP and autotrophic structuring. We find that total GPP was mostly light limited, due to high dissolved organic carbon (DOC) concentrations originating from catchment soils with coniferous vegetation and wetlands, which is further promoted by high catchment runoff. In contrast, autotrophic structuring related mostly to the relative size of the benthic habitat, and was potentially modified by CO 2 fertilization in the subarctic, resulting in significantly higher total GPP relative to the other biomes. Across Arctic and subarctic sites, DIC and CO 2 were unrelated to DOC, indicating that external inputs of inorganic carbon can influence lake productivity patterns independent of terrestrial DOC supply. By comparison, DOC and CO 2 were correlated across boreal lakes, suggesting that DOC mineralization acts as an important CO 2 source for these sites. Our results underline that GPP as a resource is regulated by landscape properties, and is sensitive to large‐scale global changes (warming, hydrological intensification, recovery of acidification) that promote changes in catchment characteristics and aquatic physico‐chemistry. Our findings aid in predicting global change impacts on autotrophic structuring, and thus community structure and resource use of aquatic consumers in general. Given the similarities of global changes across the Northern hemisphere, our findings are likely ... Article in Journal/Newspaper Northern Sweden Subarctic Wiley Online Library Global Change Biology 28 23 7063 7077 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Global change affects gross primary production (GPP) in benthic and pelagic habitats of northern lakes by influencing catchment characteristics and lake water biogeochemistry. However, how changes in key environmental drivers manifest and impact total (i.e., benthic + pelagic) GPP and the partitioning of total GPP between habitats represented by the benthic share ( autotrophic structuring ) is unclear. Using a dataset from 26 shallow lakes located across Arctic, subarctic, and boreal northern Sweden, we investigate how catchment properties (air temperature, land cover, hydrology) affect lake physico‐chemistry and patterns of total GPP and autotrophic structuring. We find that total GPP was mostly light limited, due to high dissolved organic carbon (DOC) concentrations originating from catchment soils with coniferous vegetation and wetlands, which is further promoted by high catchment runoff. In contrast, autotrophic structuring related mostly to the relative size of the benthic habitat, and was potentially modified by CO 2 fertilization in the subarctic, resulting in significantly higher total GPP relative to the other biomes. Across Arctic and subarctic sites, DIC and CO 2 were unrelated to DOC, indicating that external inputs of inorganic carbon can influence lake productivity patterns independent of terrestrial DOC supply. By comparison, DOC and CO 2 were correlated across boreal lakes, suggesting that DOC mineralization acts as an important CO 2 source for these sites. Our results underline that GPP as a resource is regulated by landscape properties, and is sensitive to large‐scale global changes (warming, hydrological intensification, recovery of acidification) that promote changes in catchment characteristics and aquatic physico‐chemistry. Our findings aid in predicting global change impacts on autotrophic structuring, and thus community structure and resource use of aquatic consumers in general. Given the similarities of global changes across the Northern hemisphere, our findings are likely ... |
author2 |
Knut och Alice Wallenbergs Stiftelse Svenska Forskningsrådet Formas |
format |
Article in Journal/Newspaper |
author |
Puts, Isolde Callisto Ask, Jenny Siewert, Matthias B. Sponseller, Ryan A. Hessen, Dag O. Bergström, Ann‐Kristin |
spellingShingle |
Puts, Isolde Callisto Ask, Jenny Siewert, Matthias B. Sponseller, Ryan A. Hessen, Dag O. Bergström, Ann‐Kristin Landscape determinants of pelagic and benthic primary production in northern lakes |
author_facet |
Puts, Isolde Callisto Ask, Jenny Siewert, Matthias B. Sponseller, Ryan A. Hessen, Dag O. Bergström, Ann‐Kristin |
author_sort |
Puts, Isolde Callisto |
title |
Landscape determinants of pelagic and benthic primary production in northern lakes |
title_short |
Landscape determinants of pelagic and benthic primary production in northern lakes |
title_full |
Landscape determinants of pelagic and benthic primary production in northern lakes |
title_fullStr |
Landscape determinants of pelagic and benthic primary production in northern lakes |
title_full_unstemmed |
Landscape determinants of pelagic and benthic primary production in northern lakes |
title_sort |
landscape determinants of pelagic and benthic primary production in northern lakes |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/gcb.16409 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16409 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16409 |
genre |
Northern Sweden Subarctic |
genre_facet |
Northern Sweden Subarctic |
op_source |
Global Change Biology volume 28, issue 23, page 7063-7077 ISSN 1354-1013 1365-2486 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/gcb.16409 |
container_title |
Global Change Biology |
container_volume |
28 |
container_issue |
23 |
container_start_page |
7063 |
op_container_end_page |
7077 |
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1810466664222818304 |