Cargando…
Rainfall drives variation in rates of change in intrinsic water use efficiency of tropical forests
Rates of change in intrinsic water use efficiency (W) of trees relative to those in atmospheric [CO(2)] (c(a)) have been mostly assessed via short-term studies (e.g., leaf analysis, flux analysis) and/or step increases in c(a) (e.g., FACE studies). Here we use compiled data for abundances of carbon...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694106/ https://www.ncbi.nlm.nih.gov/pubmed/31413322 http://dx.doi.org/10.1038/s41467-019-11679-8 |
_version_ | 1783443777430487040 |
---|---|
author | Adams, Mark A. Buckley, Thomas N. Turnbull, Tarryn L. |
author_facet | Adams, Mark A. Buckley, Thomas N. Turnbull, Tarryn L. |
author_sort | Adams, Mark A. |
collection | PubMed |
description | Rates of change in intrinsic water use efficiency (W) of trees relative to those in atmospheric [CO(2)] (c(a)) have been mostly assessed via short-term studies (e.g., leaf analysis, flux analysis) and/or step increases in c(a) (e.g., FACE studies). Here we use compiled data for abundances of carbon isotopes in tree stems to show that on decadal scales, rates of change (dW/dc(a)) vary with location and rainfall within the global tropics. For the period 1915–1995, and including corrections for mesophyll conductance and photorespiration, dW/dc(a) for drier tropical forests (receiving ~ 1000 mm rainfall) were at least twice that of the wettest (receiving ~ 4000 mm). The data also empirically confirm theorized roles of tropical forests in changes in atmospheric (13)C/(12)C ratios (the (13)C Suess Effect). Further formal analysis of geographic variation in decade-to-century scale dW/dc(a) will be needed to refine current models that predict increases in carbon uptake by forests without hydrological cost. |
format | Online Article Text |
id | pubmed-6694106 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-66941062019-08-19 Rainfall drives variation in rates of change in intrinsic water use efficiency of tropical forests Adams, Mark A. Buckley, Thomas N. Turnbull, Tarryn L. Nat Commun Article Rates of change in intrinsic water use efficiency (W) of trees relative to those in atmospheric [CO(2)] (c(a)) have been mostly assessed via short-term studies (e.g., leaf analysis, flux analysis) and/or step increases in c(a) (e.g., FACE studies). Here we use compiled data for abundances of carbon isotopes in tree stems to show that on decadal scales, rates of change (dW/dc(a)) vary with location and rainfall within the global tropics. For the period 1915–1995, and including corrections for mesophyll conductance and photorespiration, dW/dc(a) for drier tropical forests (receiving ~ 1000 mm rainfall) were at least twice that of the wettest (receiving ~ 4000 mm). The data also empirically confirm theorized roles of tropical forests in changes in atmospheric (13)C/(12)C ratios (the (13)C Suess Effect). Further formal analysis of geographic variation in decade-to-century scale dW/dc(a) will be needed to refine current models that predict increases in carbon uptake by forests without hydrological cost. Nature Publishing Group UK 2019-08-14 /pmc/articles/PMC6694106/ /pubmed/31413322 http://dx.doi.org/10.1038/s41467-019-11679-8 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Adams, Mark A. Buckley, Thomas N. Turnbull, Tarryn L. Rainfall drives variation in rates of change in intrinsic water use efficiency of tropical forests |
title | Rainfall drives variation in rates of change in intrinsic water use efficiency of tropical forests |
title_full | Rainfall drives variation in rates of change in intrinsic water use efficiency of tropical forests |
title_fullStr | Rainfall drives variation in rates of change in intrinsic water use efficiency of tropical forests |
title_full_unstemmed | Rainfall drives variation in rates of change in intrinsic water use efficiency of tropical forests |
title_short | Rainfall drives variation in rates of change in intrinsic water use efficiency of tropical forests |
title_sort | rainfall drives variation in rates of change in intrinsic water use efficiency of tropical forests |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6694106/ https://www.ncbi.nlm.nih.gov/pubmed/31413322 http://dx.doi.org/10.1038/s41467-019-11679-8 |
work_keys_str_mv | AT adamsmarka rainfalldrivesvariationinratesofchangeinintrinsicwateruseefficiencyoftropicalforests AT buckleythomasn rainfalldrivesvariationinratesofchangeinintrinsicwateruseefficiencyoftropicalforests AT turnbulltarrynl rainfalldrivesvariationinratesofchangeinintrinsicwateruseefficiencyoftropicalforests |