Root tissue chemistry, mycorrhizal colonization, and uptake of 15N tracer in glycine, ammonium, and nitrate form across a tree density gradient in northeastern Siberia. 2017.
Greater tree density and forest productivity at the tundra-taiga ecotone (TTE) are expected with climate warming, with potential feedbacks to the climate system. Yet, competition for nitrogen (N) may impact TTE dynamics. Greater tree density will likely increase N demand, while reducing N supply thr...
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2022
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Online Access: | https://dx.doi.org/10.18739/a23r0pv43 https://arcticdata.io/catalog/view/doi:10.18739/A23R0PV43 |
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ftdatacite:10.18739/a23r0pv43 2023-05-15T18:30:26+02:00 Root tissue chemistry, mycorrhizal colonization, and uptake of 15N tracer in glycine, ammonium, and nitrate form across a tree density gradient in northeastern Siberia. 2017. Hewitt, Rebecca Miller, Samantha Alexander, Heather Mack, Michelle 2022 text/xml https://dx.doi.org/10.18739/a23r0pv43 https://arcticdata.io/catalog/view/doi:10.18739/A23R0PV43 en eng Arctic Data Center FORESTS NUTRIENTS CARBON Dataset dataset 2022 ftdatacite https://doi.org/10.18739/a23r0pv43 2022-04-01T18:11:53Z Greater tree density and forest productivity at the tundra-taiga ecotone (TTE) are expected with climate warming, with potential feedbacks to the climate system. Yet, competition for nitrogen (N) may impact TTE dynamics. Greater tree density will likely increase N demand, while reducing N supply through soil shading and slower decomposition rates. We explored whether characteristics of roots and root-associated fungi important to N acquisition responded to changes in density at the TTE. We characterized C and N tissue concentrations and natural abundance isotope signatures, ectomycorrhizal colonization, along with the uptake of 15N enriched tracers in glycine, ammonium, and nitrate form by excised fine roots of Cajander larch (Larix cajanderi) from 10 stands arrayed across a tree density gradient at the taiga-tundra ecotone in far northeastern Siberia. Dataset taiga Tundra Siberia DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
topic |
FORESTS NUTRIENTS CARBON |
spellingShingle |
FORESTS NUTRIENTS CARBON Hewitt, Rebecca Miller, Samantha Alexander, Heather Mack, Michelle Root tissue chemistry, mycorrhizal colonization, and uptake of 15N tracer in glycine, ammonium, and nitrate form across a tree density gradient in northeastern Siberia. 2017. |
topic_facet |
FORESTS NUTRIENTS CARBON |
description |
Greater tree density and forest productivity at the tundra-taiga ecotone (TTE) are expected with climate warming, with potential feedbacks to the climate system. Yet, competition for nitrogen (N) may impact TTE dynamics. Greater tree density will likely increase N demand, while reducing N supply through soil shading and slower decomposition rates. We explored whether characteristics of roots and root-associated fungi important to N acquisition responded to changes in density at the TTE. We characterized C and N tissue concentrations and natural abundance isotope signatures, ectomycorrhizal colonization, along with the uptake of 15N enriched tracers in glycine, ammonium, and nitrate form by excised fine roots of Cajander larch (Larix cajanderi) from 10 stands arrayed across a tree density gradient at the taiga-tundra ecotone in far northeastern Siberia. |
format |
Dataset |
author |
Hewitt, Rebecca Miller, Samantha Alexander, Heather Mack, Michelle |
author_facet |
Hewitt, Rebecca Miller, Samantha Alexander, Heather Mack, Michelle |
author_sort |
Hewitt, Rebecca |
title |
Root tissue chemistry, mycorrhizal colonization, and uptake of 15N tracer in glycine, ammonium, and nitrate form across a tree density gradient in northeastern Siberia. 2017. |
title_short |
Root tissue chemistry, mycorrhizal colonization, and uptake of 15N tracer in glycine, ammonium, and nitrate form across a tree density gradient in northeastern Siberia. 2017. |
title_full |
Root tissue chemistry, mycorrhizal colonization, and uptake of 15N tracer in glycine, ammonium, and nitrate form across a tree density gradient in northeastern Siberia. 2017. |
title_fullStr |
Root tissue chemistry, mycorrhizal colonization, and uptake of 15N tracer in glycine, ammonium, and nitrate form across a tree density gradient in northeastern Siberia. 2017. |
title_full_unstemmed |
Root tissue chemistry, mycorrhizal colonization, and uptake of 15N tracer in glycine, ammonium, and nitrate form across a tree density gradient in northeastern Siberia. 2017. |
title_sort |
root tissue chemistry, mycorrhizal colonization, and uptake of 15n tracer in glycine, ammonium, and nitrate form across a tree density gradient in northeastern siberia. 2017. |
publisher |
Arctic Data Center |
publishDate |
2022 |
url |
https://dx.doi.org/10.18739/a23r0pv43 https://arcticdata.io/catalog/view/doi:10.18739/A23R0PV43 |
genre |
taiga Tundra Siberia |
genre_facet |
taiga Tundra Siberia |
op_doi |
https://doi.org/10.18739/a23r0pv43 |
_version_ |
1766213930447798272 |