Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland
The Arctic is warming and significant changes to the landscape, including increased vegetative cover (“greening”), are expected in the near future. These landscape changes may alter nitrogen (N) availability in terrestrial, stream, and coastal ecosystems, where production is often N limited, but the...
Published in: | Journal of Geophysical Research: Biogeosciences |
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2023
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Online Access: | https://pure.au.dk/portal/en/publications/c6d9ac96-95e9-4d0c-bcc8-e62396b0d6cb https://doi.org/10.1029/2023JG007688 |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/c6d9ac96-95e9-4d0c-bcc8-e62396b0d6cb 2024-05-12T07:59:27+00:00 Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland Riis, Tenna Tank, Jennifer L. Holmboe, Cecilie M. H. Giménez-Grau, Pau Mastepanov, Mikhail Catalán, Núria Stott, David Hansen, Birgitte Kristiansen, Søren M. Pastor, Ada 2023-12-15 https://pure.au.dk/portal/en/publications/c6d9ac96-95e9-4d0c-bcc8-e62396b0d6cb https://doi.org/10.1029/2023JG007688 eng eng https://pure.au.dk/portal/en/publications/c6d9ac96-95e9-4d0c-bcc8-e62396b0d6cb info:eu-repo/semantics/restrictedAccess Riis , T , Tank , J L , Holmboe , C M H , Giménez-Grau , P , Mastepanov , M , Catalán , N , Stott , D , Hansen , B , Kristiansen , S M & Pastor , A 2023 , ' Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland ' , Journal of Geophysical Research: Biogeosciences , vol. 128 , no. 12 , e2023JG007688 , pp. e2023JG007688 . https://doi.org/10.1029/2023JG007688 stream nitrogen greening Greenland high Arctic article 2023 ftuniaarhuspubl https://doi.org/10.1029/2023JG007688 2024-04-17T23:44:25Z The Arctic is warming and significant changes to the landscape, including increased vegetative cover (“greening”), are expected in the near future. These landscape changes may alter nitrogen (N) availability in terrestrial, stream, and coastal ecosystems, where production is often N limited, but the exact changes in nutrient cycling are uncertain. Here, we analyzed the relationship between vegetation greenness (i.e., NDVI) and dissolved inorganic (DIN) and organic (DON) concentrations in streams draining 14 headwater catchments (mean 3.6 km 2 , range 0.4–11 km 2 ) across three samplings in the Zackenberg area, Northeast Greenland. We found large variation in DIN and DON concentrations across the sampled streams. We further show that this variation is correlated to water temperature and catchment NDVI, such that increased vegetation greenness and temperature correlated with lower DIN, and increased greenness also correlated with higher DON concentrations in streams. The results suggest that increased terrestrial vegetation due to rising air temperature could substantially alter dissolved N concentrations and form in streams, with potentially cascading impacts on coastal areas. Article in Journal/Newspaper Arctic Greenland Zackenberg Aarhus University: Research Arctic Greenland Journal of Geophysical Research: Biogeosciences 128 12 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
stream nitrogen greening Greenland high Arctic |
spellingShingle |
stream nitrogen greening Greenland high Arctic Riis, Tenna Tank, Jennifer L. Holmboe, Cecilie M. H. Giménez-Grau, Pau Mastepanov, Mikhail Catalán, Núria Stott, David Hansen, Birgitte Kristiansen, Søren M. Pastor, Ada Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland |
topic_facet |
stream nitrogen greening Greenland high Arctic |
description |
The Arctic is warming and significant changes to the landscape, including increased vegetative cover (“greening”), are expected in the near future. These landscape changes may alter nitrogen (N) availability in terrestrial, stream, and coastal ecosystems, where production is often N limited, but the exact changes in nutrient cycling are uncertain. Here, we analyzed the relationship between vegetation greenness (i.e., NDVI) and dissolved inorganic (DIN) and organic (DON) concentrations in streams draining 14 headwater catchments (mean 3.6 km 2 , range 0.4–11 km 2 ) across three samplings in the Zackenberg area, Northeast Greenland. We found large variation in DIN and DON concentrations across the sampled streams. We further show that this variation is correlated to water temperature and catchment NDVI, such that increased vegetation greenness and temperature correlated with lower DIN, and increased greenness also correlated with higher DON concentrations in streams. The results suggest that increased terrestrial vegetation due to rising air temperature could substantially alter dissolved N concentrations and form in streams, with potentially cascading impacts on coastal areas. |
format |
Article in Journal/Newspaper |
author |
Riis, Tenna Tank, Jennifer L. Holmboe, Cecilie M. H. Giménez-Grau, Pau Mastepanov, Mikhail Catalán, Núria Stott, David Hansen, Birgitte Kristiansen, Søren M. Pastor, Ada |
author_facet |
Riis, Tenna Tank, Jennifer L. Holmboe, Cecilie M. H. Giménez-Grau, Pau Mastepanov, Mikhail Catalán, Núria Stott, David Hansen, Birgitte Kristiansen, Søren M. Pastor, Ada |
author_sort |
Riis, Tenna |
title |
Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland |
title_short |
Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland |
title_full |
Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland |
title_fullStr |
Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland |
title_full_unstemmed |
Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland |
title_sort |
links between stream water nitrogen and terrestrial vegetation in northeast greenland |
publishDate |
2023 |
url |
https://pure.au.dk/portal/en/publications/c6d9ac96-95e9-4d0c-bcc8-e62396b0d6cb https://doi.org/10.1029/2023JG007688 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Zackenberg |
genre_facet |
Arctic Greenland Zackenberg |
op_source |
Riis , T , Tank , J L , Holmboe , C M H , Giménez-Grau , P , Mastepanov , M , Catalán , N , Stott , D , Hansen , B , Kristiansen , S M & Pastor , A 2023 , ' Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland ' , Journal of Geophysical Research: Biogeosciences , vol. 128 , no. 12 , e2023JG007688 , pp. e2023JG007688 . https://doi.org/10.1029/2023JG007688 |
op_relation |
https://pure.au.dk/portal/en/publications/c6d9ac96-95e9-4d0c-bcc8-e62396b0d6cb |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2023JG007688 |
container_title |
Journal of Geophysical Research: Biogeosciences |
container_volume |
128 |
container_issue |
12 |
_version_ |
1798840766709104640 |