Biomass, community composition and N:P recycling ratios of zooplankton in northern high‐latitude lakes with contrasting levels of N deposition and dissolved organic carbon
Abstract Global changes are causing decreases in inorganic nitrogen (N) concentrations, increases in coloured dissolved organic carbon (DOC) concentrations, and decreases in dissolved inorganic N to total phosphorus ratios (DIN:TP) in northern lakes. The effects of these changes on phytoplankton and...
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Online Access: | http://dx.doi.org/10.1111/fwb.13956 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.13956 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/fwb.13956 |
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crwiley:10.1111/fwb.13956 2024-09-15T17:34:28+00:00 Biomass, community composition and N:P recycling ratios of zooplankton in northern high‐latitude lakes with contrasting levels of N deposition and dissolved organic carbon Bergström, Ann‐Kristin Lau, Danny C. P. Isles, Peter D. F. Jonsson, Anders Creed, Irena F. Knut och Alice Wallenbergs Stiftelse Svenska Forskningsrådet Formas Vetenskapsrådet 2022 http://dx.doi.org/10.1111/fwb.13956 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.13956 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/fwb.13956 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Freshwater Biology volume 67, issue 9, page 1508-1520 ISSN 0046-5070 1365-2427 journal-article 2022 crwiley https://doi.org/10.1111/fwb.13956 2024-08-22T04:14:47Z Abstract Global changes are causing decreases in inorganic nitrogen (N) concentrations, increases in coloured dissolved organic carbon (DOC) concentrations, and decreases in dissolved inorganic N to total phosphorus ratios (DIN:TP) in northern lakes. The effects of these changes on phytoplankton and zooplankton biomass and the N:P recycling ratio of zooplankton remain unresolved. In 33 Swedish headwater lakes across subarctic‐to‐boreal gradients with different levels of N deposition (low N in the north [Västerbotten, boreal; Abisko, subarctic] vs. high N in the south [Värmland, boreal; Jämtland, subarctic]), we measured water chemistry, phytoplankton biomass (chlorophyll‐ a [Chl‐ a ], Chl‐ a :TP), seston mineral quality (C:P, N:P), as well as zooplankton biomass, community composition, and C:N:P stoichiometry. We estimated nutrient imbalances and the N:P recycling ratios of zooplankton using ecological stoichiometry models. There was a large‐scale gradient from low lake DIN and DIN:TP in the north to high DIN and DIN:TP in the south, with lower DIN:TP in lakes coinciding with higher DOC within each region. Lower lake DIN was associated with lower phytoplankton biomass (lower Chl ‐a :TP). Lower lake DIN:TP was associated with richer seston mineral quality (lower seston C:P and N:P) and higher zooplankton biomass. Zooplankton community composition differed in the north vs. south, with a dominance of N‐requiring calanoid copepods with high N:P in the north and P‐requiring cladocerans with low N:P in the south. Also, greater differences in zooplankton community composition were found between subarctic regions (with lower DOC) than between boreal regions (with higher DOC), suggesting that increases in lake DOC and associated declines in lake DIN:TP reduce differences in zooplankton community composition. The combination of lower lake DIN, higher lake DOC, and lower lake DIN:TP led to reduced zooplankton N:P recycling ratios, possibly by reducing seston N:P and/or by enhancing calanoid copepod dominance in the ... Article in Journal/Newspaper Abisko Subarctic Copepods Wiley Online Library Freshwater Biology 67 9 1508 1520 |
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English |
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Abstract Global changes are causing decreases in inorganic nitrogen (N) concentrations, increases in coloured dissolved organic carbon (DOC) concentrations, and decreases in dissolved inorganic N to total phosphorus ratios (DIN:TP) in northern lakes. The effects of these changes on phytoplankton and zooplankton biomass and the N:P recycling ratio of zooplankton remain unresolved. In 33 Swedish headwater lakes across subarctic‐to‐boreal gradients with different levels of N deposition (low N in the north [Västerbotten, boreal; Abisko, subarctic] vs. high N in the south [Värmland, boreal; Jämtland, subarctic]), we measured water chemistry, phytoplankton biomass (chlorophyll‐ a [Chl‐ a ], Chl‐ a :TP), seston mineral quality (C:P, N:P), as well as zooplankton biomass, community composition, and C:N:P stoichiometry. We estimated nutrient imbalances and the N:P recycling ratios of zooplankton using ecological stoichiometry models. There was a large‐scale gradient from low lake DIN and DIN:TP in the north to high DIN and DIN:TP in the south, with lower DIN:TP in lakes coinciding with higher DOC within each region. Lower lake DIN was associated with lower phytoplankton biomass (lower Chl ‐a :TP). Lower lake DIN:TP was associated with richer seston mineral quality (lower seston C:P and N:P) and higher zooplankton biomass. Zooplankton community composition differed in the north vs. south, with a dominance of N‐requiring calanoid copepods with high N:P in the north and P‐requiring cladocerans with low N:P in the south. Also, greater differences in zooplankton community composition were found between subarctic regions (with lower DOC) than between boreal regions (with higher DOC), suggesting that increases in lake DOC and associated declines in lake DIN:TP reduce differences in zooplankton community composition. The combination of lower lake DIN, higher lake DOC, and lower lake DIN:TP led to reduced zooplankton N:P recycling ratios, possibly by reducing seston N:P and/or by enhancing calanoid copepod dominance in the ... |
author2 |
Knut och Alice Wallenbergs Stiftelse Svenska Forskningsrådet Formas Vetenskapsrådet |
format |
Article in Journal/Newspaper |
author |
Bergström, Ann‐Kristin Lau, Danny C. P. Isles, Peter D. F. Jonsson, Anders Creed, Irena F. |
spellingShingle |
Bergström, Ann‐Kristin Lau, Danny C. P. Isles, Peter D. F. Jonsson, Anders Creed, Irena F. Biomass, community composition and N:P recycling ratios of zooplankton in northern high‐latitude lakes with contrasting levels of N deposition and dissolved organic carbon |
author_facet |
Bergström, Ann‐Kristin Lau, Danny C. P. Isles, Peter D. F. Jonsson, Anders Creed, Irena F. |
author_sort |
Bergström, Ann‐Kristin |
title |
Biomass, community composition and N:P recycling ratios of zooplankton in northern high‐latitude lakes with contrasting levels of N deposition and dissolved organic carbon |
title_short |
Biomass, community composition and N:P recycling ratios of zooplankton in northern high‐latitude lakes with contrasting levels of N deposition and dissolved organic carbon |
title_full |
Biomass, community composition and N:P recycling ratios of zooplankton in northern high‐latitude lakes with contrasting levels of N deposition and dissolved organic carbon |
title_fullStr |
Biomass, community composition and N:P recycling ratios of zooplankton in northern high‐latitude lakes with contrasting levels of N deposition and dissolved organic carbon |
title_full_unstemmed |
Biomass, community composition and N:P recycling ratios of zooplankton in northern high‐latitude lakes with contrasting levels of N deposition and dissolved organic carbon |
title_sort |
biomass, community composition and n:p recycling ratios of zooplankton in northern high‐latitude lakes with contrasting levels of n deposition and dissolved organic carbon |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/fwb.13956 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.13956 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/fwb.13956 |
genre |
Abisko Subarctic Copepods |
genre_facet |
Abisko Subarctic Copepods |
op_source |
Freshwater Biology volume 67, issue 9, page 1508-1520 ISSN 0046-5070 1365-2427 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/fwb.13956 |
container_title |
Freshwater Biology |
container_volume |
67 |
container_issue |
9 |
container_start_page |
1508 |
op_container_end_page |
1520 |
_version_ |
1810478860824739840 |