Landscape determinants of pelagic and benthic primary production in northern lakes
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 partitioni...
Published in: | Global Change Biology |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2022
|
Subjects: | |
Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-194518 https://doi.org/10.1111/gcb.16409 |
id |
ftumeauniv:oai:DiVA.org:umu-194518 |
---|---|
record_format |
openpolar |
spelling |
ftumeauniv:oai:DiVA.org:umu-194518 2023-10-09T21:48:55+02:00 Landscape determinants of pelagic and benthic primary production in northern lakes Puts, Isolde C. Ask, Jenny Siewert, Matthias B. Sponseller, Ryan A. Hessen, Dag O. Bergström, Ann-Kristin 2022 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-194518 https://doi.org/10.1111/gcb.16409 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Department of biosciences, Oslo University, Oslo, Norway Global Change Biology, 1354-1013, 2022, 28:23, s. 7063-7077 orcid:0000-0003-0291-2639 orcid:0000-0003-2156-4908 orcid:0000-0003-2890-8873 orcid:0000-0002-5758-2705 orcid:0000-0001-5102-4289 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-194518 doi:10.1111/gcb.16409 PMID 36054573 ISI:000853803800001 Scopus 2-s2.0-85137981456 info:eu-repo/semantics/openAccess autotrophic structuring carbon fertilization climate change CO2 DOC GPP hydrology land cover Climate Research Klimatforskning Environmental Sciences Miljövetenskap Physical Geography Naturgeografi Geochemistry Geokemi Article in journal info:eu-repo/semantics/article text 2022 ftumeauniv https://doi.org/10.1111/gcb.16409 2023-09-22T13:56:35Z 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 CO2 fertilization in the subarctic, resulting in significantly higher total GPP relative to the other biomes. Across Arctic and subarctic sites, DIC and CO2 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 CO2 were correlated across boreal lakes, suggesting that DOC mineralization acts as an important CO2 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 relevant for ... Article in Journal/Newspaper Arctic Climate change Northern Sweden Subarctic Umeå University: Publications (DiVA) Arctic Global Change Biology 28 23 7063 7077 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
autotrophic structuring carbon fertilization climate change CO2 DOC GPP hydrology land cover Climate Research Klimatforskning Environmental Sciences Miljövetenskap Physical Geography Naturgeografi Geochemistry Geokemi |
spellingShingle |
autotrophic structuring carbon fertilization climate change CO2 DOC GPP hydrology land cover Climate Research Klimatforskning Environmental Sciences Miljövetenskap Physical Geography Naturgeografi Geochemistry Geokemi Puts, Isolde C. 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 |
topic_facet |
autotrophic structuring carbon fertilization climate change CO2 DOC GPP hydrology land cover Climate Research Klimatforskning Environmental Sciences Miljövetenskap Physical Geography Naturgeografi Geochemistry Geokemi |
description |
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 CO2 fertilization in the subarctic, resulting in significantly higher total GPP relative to the other biomes. Across Arctic and subarctic sites, DIC and CO2 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 CO2 were correlated across boreal lakes, suggesting that DOC mineralization acts as an important CO2 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 relevant for ... |
format |
Article in Journal/Newspaper |
author |
Puts, Isolde C. Ask, Jenny Siewert, Matthias B. Sponseller, Ryan A. Hessen, Dag O. Bergström, Ann-Kristin |
author_facet |
Puts, Isolde C. Ask, Jenny Siewert, Matthias B. Sponseller, Ryan A. Hessen, Dag O. Bergström, Ann-Kristin |
author_sort |
Puts, Isolde C. |
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 |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2022 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-194518 https://doi.org/10.1111/gcb.16409 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Northern Sweden Subarctic |
genre_facet |
Arctic Climate change Northern Sweden Subarctic |
op_relation |
Global Change Biology, 1354-1013, 2022, 28:23, s. 7063-7077 orcid:0000-0003-0291-2639 orcid:0000-0003-2156-4908 orcid:0000-0003-2890-8873 orcid:0000-0002-5758-2705 orcid:0000-0001-5102-4289 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-194518 doi:10.1111/gcb.16409 PMID 36054573 ISI:000853803800001 Scopus 2-s2.0-85137981456 |
op_rights |
info:eu-repo/semantics/openAccess |
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 |
_version_ |
1779311972764876800 |