Rowland, L, Zaragoza-Castells, J, Bloomfield, KJ et al. (10 more authors) (2017) Scaling leaf respiration with nitrogen and phosphorus in tropical forests across two continents. New Phytologist, 214 (3). pp. 1019-1032. ISSN 0028-646X
Abstract
Leaf dark respiration (Rdark) represents an important component controlling the carbon balance in tropical forests. Here, we test how nitrogen (N) and phosphorus (P) affect Rdark and its relationship with photosynthesis using three widely separated tropical forests which differ in soil fertility. Rdark was measured on 431 rainforest canopy trees, from 182 species, in French Guiana, Peru and Australia. The variation in Rdark was examined in relation to leaf N and P content, leaf structure and maximum photosynthetic rates at ambient and saturating atmospheric CO2 concentration. We found that the site with the lowest fertility (French Guiana) exhibited greater rates of Rdark per unit leaf N, P and photosynthesis. The data from Australia, for which there were no phylogenetic overlaps with the samples from the South American sites, yielded the most distinct relationships of Rdark with the measured leaf traits. Our data indicate that no single universal scaling relationship accounts for variation in Rdark across this large biogeographical space. Variability between sites in the absolute rates of Rdark and the Rdark : photosynthesis ratio were driven by variations in N- and P-use efficiency, which were related to both taxonomic and environmental variability.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 The Authors. New Phytologist, © 2016 New Phytologist Trust. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Geography (Leeds) > Ecology & Global Change (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 07 Oct 2016 14:48 |
Last Modified: | 06 Jul 2017 12:06 |
Published Version: | http://dx.doi.org/10.1111/nph.13992 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1111/nph.13992 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:102973 |