Browning affects pelagic productivity in northern lakes by surface water warming and carbon fertilization
Global change impacts important environmental drivers for pelagic gross primary production (GPP) in northern lakes, such as temperature, light, nutrient, and inorganic carbon availability. Separate and/or synergistic impacts of these environmental drivers on pelagic GPP remain largely unresolved. He...
Published in: | Global Change Biology |
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Language: | English |
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2023
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-201183 https://doi.org/10.1111/gcb.16469 |
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ftumeauniv:oai:DiVA.org:umu-201183 2023-10-09T21:48:53+02:00 Browning affects pelagic productivity in northern lakes by surface water warming and carbon fertilization Puts, Isolde C. Ask, Jenny Deininger, Anne Jonsson, Anders Karlsson, Jan Bergström, Ann-Kristin 2023 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-201183 https://doi.org/10.1111/gcb.16469 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Umeå universitet, Umeå marina forskningscentrum (UMF) Global Change Biology, 1354-1013, 2023, 29:2, s. 375-390 orcid:0000-0003-0291-2639 orcid:0000-0003-2156-4908 orcid:0000-0002-0807-0201 orcid:0000-0001-5730-0694 orcid:0000-0001-5102-4289 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-201183 doi:10.1111/gcb.16469 PMID 36197126 ISI:000869699400001 Scopus 2-s2.0-85140013427 info:eu-repo/semantics/openAccess acidification bicarbonate system DOC inorganic carbon primary production stoichiometry supersaturation temperature Physical Geography Naturgeografi Ecology Ekologi Climate Research Klimatforskning Article in journal info:eu-repo/semantics/article text 2023 ftumeauniv https://doi.org/10.1111/gcb.16469 2023-09-22T13:58:59Z Global change impacts important environmental drivers for pelagic gross primary production (GPP) in northern lakes, such as temperature, light, nutrient, and inorganic carbon availability. Separate and/or synergistic impacts of these environmental drivers on pelagic GPP remain largely unresolved. Here, we assess key drivers of pelagic GPP by combining detailed depth profiles of summer pelagic GPP with environmental and climatic data across 45 small and shallow lakes across northern Sweden (20 boreal, 6 subarctic, and 19 arctic lakes). We found that across lakes summer pelagic GPP was strongest associated with lake water temperatures, lake carbon dioxide (CO2) concentrations impacted by lake water pH, and further moderated by dissolved organic carbon (DOC) concentrations influencing light and nutrient conditions. We further used this dataset to assess the extent of additional DOC-induced warming of epilimnia (here named internal warming), which was especially pronounced in shallow lakes (decreasing 0.96°C for every decreasing m in average lake depth) and increased with higher concentrations of DOC. Additionally, the total pools and relative proportion of dissolved inorganic carbon and DOC, further influenced pelagic GPP with drivers differing slightly among the boreal, subarctic and Arctic biomes. Our study provides novel insights in that global change affects pelagic GPP in northern lakes not only by modifying the organic carbon cycle and light and nutrient conditions, but also through modifications of inorganic carbon supply and temperature. Considering the large-scale impacts and similarities of global warming, browning and recovery from acidification of lakes at higher latitudes throughout the northern hemisphere, these changes are likely to operate on a global scale. Article in Journal/Newspaper Arctic Global warming Northern Sweden Subarctic Umeå University: Publications (DiVA) Arctic Browning ENVELOPE(164.050,164.050,-74.617,-74.617) Global Change Biology 29 2 375 390 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
acidification bicarbonate system DOC inorganic carbon primary production stoichiometry supersaturation temperature Physical Geography Naturgeografi Ecology Ekologi Climate Research Klimatforskning |
spellingShingle |
acidification bicarbonate system DOC inorganic carbon primary production stoichiometry supersaturation temperature Physical Geography Naturgeografi Ecology Ekologi Climate Research Klimatforskning Puts, Isolde C. Ask, Jenny Deininger, Anne Jonsson, Anders Karlsson, Jan Bergström, Ann-Kristin Browning affects pelagic productivity in northern lakes by surface water warming and carbon fertilization |
topic_facet |
acidification bicarbonate system DOC inorganic carbon primary production stoichiometry supersaturation temperature Physical Geography Naturgeografi Ecology Ekologi Climate Research Klimatforskning |
description |
Global change impacts important environmental drivers for pelagic gross primary production (GPP) in northern lakes, such as temperature, light, nutrient, and inorganic carbon availability. Separate and/or synergistic impacts of these environmental drivers on pelagic GPP remain largely unresolved. Here, we assess key drivers of pelagic GPP by combining detailed depth profiles of summer pelagic GPP with environmental and climatic data across 45 small and shallow lakes across northern Sweden (20 boreal, 6 subarctic, and 19 arctic lakes). We found that across lakes summer pelagic GPP was strongest associated with lake water temperatures, lake carbon dioxide (CO2) concentrations impacted by lake water pH, and further moderated by dissolved organic carbon (DOC) concentrations influencing light and nutrient conditions. We further used this dataset to assess the extent of additional DOC-induced warming of epilimnia (here named internal warming), which was especially pronounced in shallow lakes (decreasing 0.96°C for every decreasing m in average lake depth) and increased with higher concentrations of DOC. Additionally, the total pools and relative proportion of dissolved inorganic carbon and DOC, further influenced pelagic GPP with drivers differing slightly among the boreal, subarctic and Arctic biomes. Our study provides novel insights in that global change affects pelagic GPP in northern lakes not only by modifying the organic carbon cycle and light and nutrient conditions, but also through modifications of inorganic carbon supply and temperature. Considering the large-scale impacts and similarities of global warming, browning and recovery from acidification of lakes at higher latitudes throughout the northern hemisphere, these changes are likely to operate on a global scale. |
format |
Article in Journal/Newspaper |
author |
Puts, Isolde C. Ask, Jenny Deininger, Anne Jonsson, Anders Karlsson, Jan Bergström, Ann-Kristin |
author_facet |
Puts, Isolde C. Ask, Jenny Deininger, Anne Jonsson, Anders Karlsson, Jan Bergström, Ann-Kristin |
author_sort |
Puts, Isolde C. |
title |
Browning affects pelagic productivity in northern lakes by surface water warming and carbon fertilization |
title_short |
Browning affects pelagic productivity in northern lakes by surface water warming and carbon fertilization |
title_full |
Browning affects pelagic productivity in northern lakes by surface water warming and carbon fertilization |
title_fullStr |
Browning affects pelagic productivity in northern lakes by surface water warming and carbon fertilization |
title_full_unstemmed |
Browning affects pelagic productivity in northern lakes by surface water warming and carbon fertilization |
title_sort |
browning affects pelagic productivity in northern lakes by surface water warming and carbon fertilization |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2023 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-201183 https://doi.org/10.1111/gcb.16469 |
long_lat |
ENVELOPE(164.050,164.050,-74.617,-74.617) |
geographic |
Arctic Browning |
geographic_facet |
Arctic Browning |
genre |
Arctic Global warming Northern Sweden Subarctic |
genre_facet |
Arctic Global warming Northern Sweden Subarctic |
op_relation |
Global Change Biology, 1354-1013, 2023, 29:2, s. 375-390 orcid:0000-0003-0291-2639 orcid:0000-0003-2156-4908 orcid:0000-0002-0807-0201 orcid:0000-0001-5730-0694 orcid:0000-0001-5102-4289 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-201183 doi:10.1111/gcb.16469 PMID 36197126 ISI:000869699400001 Scopus 2-s2.0-85140013427 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/gcb.16469 |
container_title |
Global Change Biology |
container_volume |
29 |
container_issue |
2 |
container_start_page |
375 |
op_container_end_page |
390 |
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1779311954064572416 |