Data from: Urine is an important nitrogen source for plants irrespective of vegetation composition in an Arctic tundra: insights from a 15N-enriched urea tracer experiment
1. Mammalian herbivores can strongly influence nitrogen (N) cycling and herbivore urine could be a central component of the N cycle in grazed ecosystems. Despite its potential role for ecosystem productivity and functioning, the fate of N derived from urine has rarely been investigated in grazed eco...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:97607 2023-07-02T03:31:28+02:00 Data from: Urine is an important nitrogen source for plants irrespective of vegetation composition in an Arctic tundra: insights from a 15N-enriched urea tracer experiment Barthelemy, Hélène Stark, Sari Michelsen, Anders Olofsson, Johan 2017-06-19T17:34:35.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-hy-oinz https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97607 unknown doi:10.5061/dryad.52qh9/1 doi:10.5061/dryad.52qh9/2 doi:10.5061/dryad.52qh9/3 doi:10.5061/dryad.52qh9/4 doi:10.1111/1365-2745.12820 http://nbn-resolving.org/urn:nbn:nl:ui:13-hy-oinz doi:10.5061/dryad.52qh9 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97607 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2017 ftdans https://doi.org/10.5061/dryad.52qh9/110.5061/dryad.52qh9/210.5061/dryad.52qh9/310.5061/dryad.52qh9/410.1111/1365-2745.1282010.5061/dryad.52qh9 2023-06-13T12:42:54Z 1. Mammalian herbivores can strongly influence nitrogen (N) cycling and herbivore urine could be a central component of the N cycle in grazed ecosystems. Despite its potential role for ecosystem productivity and functioning, the fate of N derived from urine has rarely been investigated in grazed ecosystems. 2. This study explored the fate of 15 N-enriched urea in tundra sites that have been either lightly or intensively grazed by reindeer for more than 50 years. We followed the fate of the 15 N applied to the plant canopy, at 2 weeks and 1 year after tracer addition, in the different ecosystem N pools. 3. 15 N-urea was rapidly incorporated in cryptogams and in aboveground parts of vascular plants, while the soil microbial pool and plant roots sequestered only a marginal proportion. Further, the litter layer constituted a large sink for the 15 N-urea, at least in the short term, indicating a high biological activity in the litter layer and high immobilization in the first phases of organic matter decomposition. 4. Mosses and lichens still constituted the largest sink for the 15 N-urea 1 year after tracer addition at both levels of grazing intensity demonstrating their large ability to capture and retain N from urine. Despite large fundamental differences in their traits, deciduous and evergreen shrubs were just as efficient as graminoids in taking up the 15 N-urea. The total recovery of 15 N-urea was lower in the intensively grazed sites, suggesting that reindeer reduce ecosystem N retention. 5. Synthesis The rapid incorporation of the applied 15 N-urea indicates that arctic plants can take advantage of a pulse of incoming N from urine. In addition, δ 15 N values of all taxa in the heavily grazed sites converged towards the δ 15 N values for urine, bringing further evidence that urine is an important N source for plants in grazed tundra ecosystems. Other/Unknown Material Arctic Tundra Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Arctic |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Barthelemy, Hélène Stark, Sari Michelsen, Anders Olofsson, Johan Data from: Urine is an important nitrogen source for plants irrespective of vegetation composition in an Arctic tundra: insights from a 15N-enriched urea tracer experiment |
topic_facet |
Life sciences medicine and health care |
description |
1. Mammalian herbivores can strongly influence nitrogen (N) cycling and herbivore urine could be a central component of the N cycle in grazed ecosystems. Despite its potential role for ecosystem productivity and functioning, the fate of N derived from urine has rarely been investigated in grazed ecosystems. 2. This study explored the fate of 15 N-enriched urea in tundra sites that have been either lightly or intensively grazed by reindeer for more than 50 years. We followed the fate of the 15 N applied to the plant canopy, at 2 weeks and 1 year after tracer addition, in the different ecosystem N pools. 3. 15 N-urea was rapidly incorporated in cryptogams and in aboveground parts of vascular plants, while the soil microbial pool and plant roots sequestered only a marginal proportion. Further, the litter layer constituted a large sink for the 15 N-urea, at least in the short term, indicating a high biological activity in the litter layer and high immobilization in the first phases of organic matter decomposition. 4. Mosses and lichens still constituted the largest sink for the 15 N-urea 1 year after tracer addition at both levels of grazing intensity demonstrating their large ability to capture and retain N from urine. Despite large fundamental differences in their traits, deciduous and evergreen shrubs were just as efficient as graminoids in taking up the 15 N-urea. The total recovery of 15 N-urea was lower in the intensively grazed sites, suggesting that reindeer reduce ecosystem N retention. 5. Synthesis The rapid incorporation of the applied 15 N-urea indicates that arctic plants can take advantage of a pulse of incoming N from urine. In addition, δ 15 N values of all taxa in the heavily grazed sites converged towards the δ 15 N values for urine, bringing further evidence that urine is an important N source for plants in grazed tundra ecosystems. |
author |
Barthelemy, Hélène Stark, Sari Michelsen, Anders Olofsson, Johan |
author_facet |
Barthelemy, Hélène Stark, Sari Michelsen, Anders Olofsson, Johan |
author_sort |
Barthelemy, Hélène |
title |
Data from: Urine is an important nitrogen source for plants irrespective of vegetation composition in an Arctic tundra: insights from a 15N-enriched urea tracer experiment |
title_short |
Data from: Urine is an important nitrogen source for plants irrespective of vegetation composition in an Arctic tundra: insights from a 15N-enriched urea tracer experiment |
title_full |
Data from: Urine is an important nitrogen source for plants irrespective of vegetation composition in an Arctic tundra: insights from a 15N-enriched urea tracer experiment |
title_fullStr |
Data from: Urine is an important nitrogen source for plants irrespective of vegetation composition in an Arctic tundra: insights from a 15N-enriched urea tracer experiment |
title_full_unstemmed |
Data from: Urine is an important nitrogen source for plants irrespective of vegetation composition in an Arctic tundra: insights from a 15N-enriched urea tracer experiment |
title_sort |
data from: urine is an important nitrogen source for plants irrespective of vegetation composition in an arctic tundra: insights from a 15n-enriched urea tracer experiment |
publishDate |
2017 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-hy-oinz https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97607 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_relation |
doi:10.5061/dryad.52qh9/1 doi:10.5061/dryad.52qh9/2 doi:10.5061/dryad.52qh9/3 doi:10.5061/dryad.52qh9/4 doi:10.1111/1365-2745.12820 http://nbn-resolving.org/urn:nbn:nl:ui:13-hy-oinz doi:10.5061/dryad.52qh9 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97607 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.52qh9/110.5061/dryad.52qh9/210.5061/dryad.52qh9/310.5061/dryad.52qh9/410.1111/1365-2745.1282010.5061/dryad.52qh9 |
_version_ |
1770270850715484160 |