Data from: Grazing decreases N partitioning among coexisting plant species
1. Herbivores play a key role in shaping ecosystem structure and functions by influencing plant and microbial community composition and nutrient cycling. 2. This study investigated the long-term effects of herbivores on plant resource acquisition. We explored differences in the natural δ15N signatur...
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Data Archiving and Networked Services (DANS)
2018
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Online Access: | https://doi.org/10.5061/dryad.78084 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::22f8d8ce5f34577fbc921abe1e480b19 2023-05-15T15:17:36+02:00 Data from: Grazing decreases N partitioning among coexisting plant species Barthelemy, Hélène Stark, Sari Kytoviita, Minna-Maarit Olofsson, Johan 2018-05-30 https://doi.org/10.5061/dryad.78084 undefined unknown Data Archiving and Networked Services (DANS) http://dx.doi.org/10.5061/dryad.78084 https://dx.doi.org/10.5061/dryad.78084 lic_creative-commons oai:easy.dans.knaw.nl:easy-dataset:97608 10.5061/dryad.78084 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:97608 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 Life sciences medicine and health care plant-herbivore interactions nutrient cycling Above- belowground linkages Mycorrhizal colonization Arctic tundra Ungulate Grazing Microbial N biomass Plant nutrient uptake envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2018 fttriple https://doi.org/10.5061/dryad.78084 2023-01-22T17:23:34Z 1. Herbivores play a key role in shaping ecosystem structure and functions by influencing plant and microbial community composition and nutrient cycling. 2. This study investigated the long-term effects of herbivores on plant resource acquisition. We explored differences in the natural δ15N signatures in plant, microbial and soil N pools, and examined mycorrhizal colonization in two tundra sites that have been either lightly or heavily grazed by reindeer for more than 50 years. The study examined changes in nutrient acquisition in five common tundra plants with contrasting traits and mycorrhiza status; the mycorrhizal dwarf shrubs, Betula nana, Vaccinium myrtillus and Empetrum hermaphroditum; a mycorrhizal grass, Deschampsia flexuosa, and a non-mycorrhizal sedge, Carex bigelowii. 3. There were large variations in δ15N among coexisting plant species in the lightly grazed sites. This variation was dramatically reduced in the heavily grazed sites. At an individual species level, δ15N was higher in E. hermaphroditum and lower in C. bigelowii in the heavily grazed sites. Mycorrhizal colonization in B. nana and E. hermaphroditum roots were also lower in the heavily grazed sites. The δ15N signatures of the total soil N pool and of the microbial N pools were higher in the heavily grazed sites. 4. Since the strong δ15N differentiation among plant species has been interpreted as a result of plants with different mycorrhizal types using different sources of soil nitrogen, we suggest that the lower variation in δ15N in heavily grazed sites indicates a lower niche differentiation in nitrogen uptake among plants. Reduced mycorrhiza-mediated nitrogen uptake by some of the species, a shift towards a more mineral nutrition due to higher nutrient turnover, and uptake of labile nitrogen from dung and urine in the heavily grazed sites could all contribute to the changes in plant δ15N. 5. We conclude that herbivores have the potential to influence plant nutrient uptake and provide the first data suggesting that herbivores decrease ... Dataset Arctic Betula nana Carex bigelowii Tundra Unknown Arctic |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
Life sciences medicine and health care plant-herbivore interactions nutrient cycling Above- belowground linkages Mycorrhizal colonization Arctic tundra Ungulate Grazing Microbial N biomass Plant nutrient uptake envir geo |
spellingShingle |
Life sciences medicine and health care plant-herbivore interactions nutrient cycling Above- belowground linkages Mycorrhizal colonization Arctic tundra Ungulate Grazing Microbial N biomass Plant nutrient uptake envir geo Barthelemy, Hélène Stark, Sari Kytoviita, Minna-Maarit Olofsson, Johan Data from: Grazing decreases N partitioning among coexisting plant species |
topic_facet |
Life sciences medicine and health care plant-herbivore interactions nutrient cycling Above- belowground linkages Mycorrhizal colonization Arctic tundra Ungulate Grazing Microbial N biomass Plant nutrient uptake envir geo |
description |
1. Herbivores play a key role in shaping ecosystem structure and functions by influencing plant and microbial community composition and nutrient cycling. 2. This study investigated the long-term effects of herbivores on plant resource acquisition. We explored differences in the natural δ15N signatures in plant, microbial and soil N pools, and examined mycorrhizal colonization in two tundra sites that have been either lightly or heavily grazed by reindeer for more than 50 years. The study examined changes in nutrient acquisition in five common tundra plants with contrasting traits and mycorrhiza status; the mycorrhizal dwarf shrubs, Betula nana, Vaccinium myrtillus and Empetrum hermaphroditum; a mycorrhizal grass, Deschampsia flexuosa, and a non-mycorrhizal sedge, Carex bigelowii. 3. There were large variations in δ15N among coexisting plant species in the lightly grazed sites. This variation was dramatically reduced in the heavily grazed sites. At an individual species level, δ15N was higher in E. hermaphroditum and lower in C. bigelowii in the heavily grazed sites. Mycorrhizal colonization in B. nana and E. hermaphroditum roots were also lower in the heavily grazed sites. The δ15N signatures of the total soil N pool and of the microbial N pools were higher in the heavily grazed sites. 4. Since the strong δ15N differentiation among plant species has been interpreted as a result of plants with different mycorrhizal types using different sources of soil nitrogen, we suggest that the lower variation in δ15N in heavily grazed sites indicates a lower niche differentiation in nitrogen uptake among plants. Reduced mycorrhiza-mediated nitrogen uptake by some of the species, a shift towards a more mineral nutrition due to higher nutrient turnover, and uptake of labile nitrogen from dung and urine in the heavily grazed sites could all contribute to the changes in plant δ15N. 5. We conclude that herbivores have the potential to influence plant nutrient uptake and provide the first data suggesting that herbivores decrease ... |
format |
Dataset |
author |
Barthelemy, Hélène Stark, Sari Kytoviita, Minna-Maarit Olofsson, Johan |
author_facet |
Barthelemy, Hélène Stark, Sari Kytoviita, Minna-Maarit Olofsson, Johan |
author_sort |
Barthelemy, Hélène |
title |
Data from: Grazing decreases N partitioning among coexisting plant species |
title_short |
Data from: Grazing decreases N partitioning among coexisting plant species |
title_full |
Data from: Grazing decreases N partitioning among coexisting plant species |
title_fullStr |
Data from: Grazing decreases N partitioning among coexisting plant species |
title_full_unstemmed |
Data from: Grazing decreases N partitioning among coexisting plant species |
title_sort |
data from: grazing decreases n partitioning among coexisting plant species |
publisher |
Data Archiving and Networked Services (DANS) |
publishDate |
2018 |
url |
https://doi.org/10.5061/dryad.78084 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Betula nana Carex bigelowii Tundra |
genre_facet |
Arctic Betula nana Carex bigelowii Tundra |
op_source |
oai:easy.dans.knaw.nl:easy-dataset:97608 10.5061/dryad.78084 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:97608 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 |
op_relation |
http://dx.doi.org/10.5061/dryad.78084 https://dx.doi.org/10.5061/dryad.78084 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.78084 |
_version_ |
1766347844122312704 |