Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland
International audience Abstract 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 produc...
Published in: | Journal of Geophysical Research: Biogeosciences |
---|---|
Main Authors: | , , , , , , , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2023
|
Subjects: | |
Online Access: | https://hal.science/hal-04379393 https://doi.org/10.1029/2023JG007688 |
id |
ftceafr:oai:HAL:hal-04379393v1 |
---|---|
record_format |
openpolar |
spelling |
ftceafr:oai:HAL:hal-04379393v1 2024-06-09T07:44:10+00:00 Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland Riis, Tenna Tank, Jennifer Holmboe, Cecilie Giménez-Grau, Pau Mastepanov, Mikhail Catalán, Núria Stott, David Hansen, Birgitte Kristiansen, Søren Pastor, Ada Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) 2023-12-15 https://hal.science/hal-04379393 https://doi.org/10.1029/2023JG007688 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2023JG007688 hal-04379393 https://hal.science/hal-04379393 doi:10.1029/2023JG007688 ISSN: 2169-8953 Journal of Geophysical Research: Biogeosciences https://hal.science/hal-04379393 Journal of Geophysical Research: Biogeosciences, 2023, 128 (12), ⟨10.1029/2023JG007688⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2023 ftceafr https://doi.org/10.1029/2023JG007688 2024-05-16T13:16:22Z International audience Abstract 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 HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Arctic Greenland Journal of Geophysical Research: Biogeosciences 128 12 |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Riis, Tenna Tank, Jennifer Holmboe, Cecilie Giménez-Grau, Pau Mastepanov, Mikhail Catalán, Núria Stott, David Hansen, Birgitte Kristiansen, Søren Pastor, Ada Links Between Stream Water Nitrogen and Terrestrial Vegetation in Northeast Greenland |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Abstract 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. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
format |
Article in Journal/Newspaper |
author |
Riis, Tenna Tank, Jennifer Holmboe, Cecilie Giménez-Grau, Pau Mastepanov, Mikhail Catalán, Núria Stott, David Hansen, Birgitte Kristiansen, Søren Pastor, Ada |
author_facet |
Riis, Tenna Tank, Jennifer Holmboe, Cecilie Giménez-Grau, Pau Mastepanov, Mikhail Catalán, Núria Stott, David Hansen, Birgitte Kristiansen, Søren 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 |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04379393 https://doi.org/10.1029/2023JG007688 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Zackenberg |
genre_facet |
Arctic Greenland Zackenberg |
op_source |
ISSN: 2169-8953 Journal of Geophysical Research: Biogeosciences https://hal.science/hal-04379393 Journal of Geophysical Research: Biogeosciences, 2023, 128 (12), ⟨10.1029/2023JG007688⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2023JG007688 hal-04379393 https://hal.science/hal-04379393 doi:10.1029/2023JG007688 |
op_doi |
https://doi.org/10.1029/2023JG007688 |
container_title |
Journal of Geophysical Research: Biogeosciences |
container_volume |
128 |
container_issue |
12 |
_version_ |
1801372959313494016 |