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Global patterns of dust and bedrock nutrient supply to montane ecosystems
A global compilation of erosion rates and modeled dust fluxes shows that dust inputs can be a large fraction of total soil inputs, particularly when erosion is slow and soil residence time is therefore long. These observations suggest that dust-derived nutrients can be vital to montane ecosystems, e...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5721729/ https://www.ncbi.nlm.nih.gov/pubmed/29226246 http://dx.doi.org/10.1126/sciadv.aao1588 |
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author | Arvin, Lindsay J. Riebe, Clifford S. Aciego, Sarah M. Blakowski, Molly A. |
author_facet | Arvin, Lindsay J. Riebe, Clifford S. Aciego, Sarah M. Blakowski, Molly A. |
author_sort | Arvin, Lindsay J. |
collection | PubMed |
description | A global compilation of erosion rates and modeled dust fluxes shows that dust inputs can be a large fraction of total soil inputs, particularly when erosion is slow and soil residence time is therefore long. These observations suggest that dust-derived nutrients can be vital to montane ecosystems, even when nutrient supply from bedrock is substantial. We tested this hypothesis using neodymium isotopes as a tracer of mineral phosphorus contributions to vegetation in the Sierra Nevada, California, where rates of erosion and dust deposition are both intermediate within the global compilation. Neodymium isotopes in pine needles, dust, and bedrock show that dust contributes most of the neodymium in vegetation at the site. Together, the global data sets and isotopic tracers confirm the ecological significance of dust in eroding mountain landscapes. This challenges conventional assumptions about dust-derived nutrients, expanding the plausible range of dust-reliant ecosystems to include many temperate montane regions, despite their relatively high rates of erosion and bedrock nutrient supply. |
format | Online Article Text |
id | pubmed-5721729 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-57217292017-12-10 Global patterns of dust and bedrock nutrient supply to montane ecosystems Arvin, Lindsay J. Riebe, Clifford S. Aciego, Sarah M. Blakowski, Molly A. Sci Adv Research Articles A global compilation of erosion rates and modeled dust fluxes shows that dust inputs can be a large fraction of total soil inputs, particularly when erosion is slow and soil residence time is therefore long. These observations suggest that dust-derived nutrients can be vital to montane ecosystems, even when nutrient supply from bedrock is substantial. We tested this hypothesis using neodymium isotopes as a tracer of mineral phosphorus contributions to vegetation in the Sierra Nevada, California, where rates of erosion and dust deposition are both intermediate within the global compilation. Neodymium isotopes in pine needles, dust, and bedrock show that dust contributes most of the neodymium in vegetation at the site. Together, the global data sets and isotopic tracers confirm the ecological significance of dust in eroding mountain landscapes. This challenges conventional assumptions about dust-derived nutrients, expanding the plausible range of dust-reliant ecosystems to include many temperate montane regions, despite their relatively high rates of erosion and bedrock nutrient supply. American Association for the Advancement of Science 2017-12-06 /pmc/articles/PMC5721729/ /pubmed/29226246 http://dx.doi.org/10.1126/sciadv.aao1588 Text en Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Arvin, Lindsay J. Riebe, Clifford S. Aciego, Sarah M. Blakowski, Molly A. Global patterns of dust and bedrock nutrient supply to montane ecosystems |
title | Global patterns of dust and bedrock nutrient supply to montane ecosystems |
title_full | Global patterns of dust and bedrock nutrient supply to montane ecosystems |
title_fullStr | Global patterns of dust and bedrock nutrient supply to montane ecosystems |
title_full_unstemmed | Global patterns of dust and bedrock nutrient supply to montane ecosystems |
title_short | Global patterns of dust and bedrock nutrient supply to montane ecosystems |
title_sort | global patterns of dust and bedrock nutrient supply to montane ecosystems |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5721729/ https://www.ncbi.nlm.nih.gov/pubmed/29226246 http://dx.doi.org/10.1126/sciadv.aao1588 |
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