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Balancing the costs of carbon gain and water transport: testing a new theoretical framework for plant functional ecology
File | Description | Size | Format | |
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Main text[1212].docx | Accepted version | 59.21 kB | Microsoft Word | View/Open |
ELEPrenticeSA1[1209].docx | Supporting information | 22.67 kB | Microsoft Word | View/Open |
ELEPrenticeSA2[1210].docx | Supporting information | 16.35 kB | Microsoft Word | View/Open |
ELEPrenticeSA3[1211].docx | Supporting information | 16.79 kB | Microsoft Word | View/Open |
Response[1213].docx | Supporting information | 33.72 kB | Microsoft Word | View/Open |
Title: | Balancing the costs of carbon gain and water transport: testing a new theoretical framework for plant functional ecology |
Authors: | Prentice, IC Dong, N Gleason, SM Maire, V Wright, IJ |
Item Type: | Journal Article |
Abstract: | A novel framework is presented for the analysis of ecophysiological field measurements and modelling. The hypothesis ‘leaves minimise the summed unit costs of transpiration and carboxylation’ predicts leaf‐internal/ambient CO2 ratios (ci/ca) and slopes of maximum carboxylation rate (Vcmax) or leaf nitrogen (Narea) vs. stomatal conductance. Analysis of data on woody species from contrasting climates (cold‐hot, dry‐wet) yielded steeper slopes and lower mean ci/ca ratios at the dry or cold sites than at the wet or hot sites. High atmospheric vapour pressure deficit implies low ci/ca in dry climates. High water viscosity (more costly transport) and low photorespiration (less costly photosynthesis) imply low ci/ca in cold climates. Observed site‐mean ci/ca shifts are predicted quantitatively for temperature contrasts (by photorespiration plus viscosity effects) and approximately for aridity contrasts. The theory explains the dependency of ci/ca ratios on temperature and vapour pressure deficit, and observed relationships of leaf δ13C and Narea to aridity. |
Issue Date: | 16-Dec-2013 |
Date of Acceptance: | 7-Oct-2013 |
URI: | http://hdl.handle.net/10044/1/68315 |
DOI: | https://dx.doi.org/10.1111/ele.12211 |
ISSN: | 1461-023X |
Publisher: | Wiley |
Start Page: | 82 |
End Page: | 91 |
Journal / Book Title: | Ecology Letters |
Volume: | 17 |
Issue: | 1 |
Copyright Statement: | ©2013 John Wiley & Sons Ltd/CNRS. |
Keywords: | Science & Technology Life Sciences & Biomedicine Ecology Environmental Sciences & Ecology Aridity nitrogen optimality photosynthesis plant functional traits stable isotopes stomatal conductance temperature transpiration viscosity STOMATAL CONDUCTANCE ATMOSPHERIC CO2 LEAF NITROGEN PHOTOSYNTHETIC CAPACITY RAINFALL GRADIENT USE EFFICIENCY MURRAYS LAW MODEL TRANSPIRATION TEMPERATURE Algorithms Carbon Dioxide Nitrogen Plant Leaves Plant Transpiration Plants 0501 Ecological Applications 0602 Ecology |
Publication Status: | Published |
Online Publication Date: | 2013-11-11 |
Appears in Collections: | Department of Life Sciences Grantham Institute for Climate Change Faculty of Natural Sciences |