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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Online Access: | https://doi.org/10.5061/dryad.52qh9 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::018e066d1b5c44cb7e7d77bbb090ee3d 2023-05-15T14:59:07+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 2018-05-30 https://doi.org/10.5061/dryad.52qh9 undefined unknown Dryad https://dx.doi.org/10.5061/dryad.52qh9 http://dx.doi.org/10.5061/dryad.52qh9 lic_creative-commons 10.5061/dryad.52qh9 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:97607 oai:easy.dans.knaw.nl:easy-dataset:97607 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 urine plant-herbivore interactions nutrient cycling Arctic tundra Cryptogams Microbial N biomass 15 N labelling Above-belowground linkages Plant nutrient uptake grazing intensity Life sciences medicine and health care envir art Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2018 fttriple https://doi.org/10.5061/dryad.52qh9 2023-01-22T17:08:20Z 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 15N-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 15N applied to the plant canopy, at 2 weeks and 1 year after tracer addition, in the different ecosystem N pools. 3. 15N-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 15N-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 15N-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 15N-urea. The total recovery of 15N-urea was lower in the intensively grazed sites, suggesting that reindeer reduce ecosystem N retention. 5. Synthesis The rapid incorporation of the applied 15N-urea indicates that arctic plants can take advantage of a pulse of incoming N from urine. In addition, δ 15N values of all taxa in the heavily grazed sites converged towards the δ 15N values for urine, bringing further evidence that urine is an important N source for plants in grazed tundra ecosystems. Complete datasetBiomass, N pool, 15N recovery and 15N enrichment for the different ecosystem N pools: Plants (aboveground + root), litter, microbial N and soil extractable N at ... Dataset Arctic Tundra Unknown Arctic |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
urine plant-herbivore interactions nutrient cycling Arctic tundra Cryptogams Microbial N biomass 15 N labelling Above-belowground linkages Plant nutrient uptake grazing intensity Life sciences medicine and health care envir art |
spellingShingle |
urine plant-herbivore interactions nutrient cycling Arctic tundra Cryptogams Microbial N biomass 15 N labelling Above-belowground linkages Plant nutrient uptake grazing intensity Life sciences medicine and health care envir art 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 |
urine plant-herbivore interactions nutrient cycling Arctic tundra Cryptogams Microbial N biomass 15 N labelling Above-belowground linkages Plant nutrient uptake grazing intensity Life sciences medicine and health care envir art |
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 15N-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 15N applied to the plant canopy, at 2 weeks and 1 year after tracer addition, in the different ecosystem N pools. 3. 15N-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 15N-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 15N-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 15N-urea. The total recovery of 15N-urea was lower in the intensively grazed sites, suggesting that reindeer reduce ecosystem N retention. 5. Synthesis The rapid incorporation of the applied 15N-urea indicates that arctic plants can take advantage of a pulse of incoming N from urine. In addition, δ 15N values of all taxa in the heavily grazed sites converged towards the δ 15N values for urine, bringing further evidence that urine is an important N source for plants in grazed tundra ecosystems. Complete datasetBiomass, N pool, 15N recovery and 15N enrichment for the different ecosystem N pools: Plants (aboveground + root), litter, microbial N and soil extractable N at ... |
format |
Dataset |
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 |
publisher |
Dryad |
publishDate |
2018 |
url |
https://doi.org/10.5061/dryad.52qh9 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_source |
10.5061/dryad.52qh9 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:97607 oai:easy.dans.knaw.nl:easy-dataset:97607 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 |
op_relation |
https://dx.doi.org/10.5061/dryad.52qh9 http://dx.doi.org/10.5061/dryad.52qh9 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.52qh9 |
_version_ |
1766331258274578432 |