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Global variability in leaf respiration in relation to climate, plant functional types and leaf traits
- Source :
- ResearcherID, New Phytologist 206 (2015) 2, New Phytologist, New Phytologist, Wiley, 2015, 206 (2), pp.614-636. ⟨10.1111/nph.13253⟩, New Phytologist, 206(2), 614-636, Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP, Digital.CSIC. Repositorio Institucional del CSIC, instname
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Abstract
- Owen K. Atkin [et al.].- Received: 8 July 2014, Accepted: 29 November 2014<br />Leaf dark respiration (Rdark) is an important yet poorly quantified component of the global carbon cycle. Given this, we analyzed a new global database of Rdark and associated leaf traits.<br />Data for 899 species were compiled from 100 sites (from the Arctic to the tropics). Several woody and nonwoody plant functional types (PFTs) were represented. Mixed-effects models were used to disentangle sources of variation in Rdark.<br />Area-based Rdark at the prevailing average daily growth temperature (T) of each site increased only twofold from the Arctic to the tropics, despite a 20°C increase in growing T (8–28°C). By contrast, Rdark at a standard T (25°C, Rdark25) was threefold higher in the Arctic than in the tropics, and twofold higher at arid than at mesic sites. Species and PFTs at cold sites exhibited higher Rdark25 at a given photosynthetic capacity (Vcmax25) or leaf nitrogen concentration ([N]) than species at warmer sites. Rdark25 values at any given Vcmax25 or [N] were higher in herbs than in woody plants.<br />The results highlight variation in Rdark among species and across global gradients in T and aridity. In addition to their ecological significance, the results provide a framework for improving representation of Rdark in terrestrial biosphere models (TBMs) and associated land-surface components of Earth system models (ESMs).
- Subjects :
- temperature sensitivity
Physiology
[SDV]Life Sciences [q-bio]
Acclimatization
Climate
Plant Science
Photosynthesis
Aridity
Temperatures
Ecology
Respiration
Temperature
Biosphere
Plants
PE&RC
Phenotype
nitrogen concentration
Leaf nitrogen (N)
Plant Leave
Life Sciences & Biomedicine
Woody plant
terrestrial carbon-cycle
thermal-acclimation
Nitrogen
Plant Biology & Botany
Cell Respiration
Climate change
Biology
FOTOSSÍNTESE
Climate model
Ecology and Environment
tropical rain-forests
Carbon cycle
Climate models
Carbon Cycle
Photosynthesi
07 Agricultural and Veterinary Sciences
Bosecologie en Bosbeheer
Plant functional types (PFTs)
elevated atmospheric co2
photosynthetic capacity
Science & Technology
Plant Sciences
Tropics
scaling relationships
Plant
15. Life on land
Herbaceous plant
06 Biological Sciences
Carbon Dioxide
Models, Theoretical
vegetation models
Photosynthetic capacity
Arid
Forest Ecology and Forest Management
Plant Leaves
Biology and Microbiology
13. Climate action
dark respiration
Acclimation
Subjects
Details
- ISSN :
- 0028646X and 14698137
- Database :
- OpenAIRE
- Journal :
- ResearcherID, New Phytologist 206 (2015) 2, New Phytologist, New Phytologist, Wiley, 2015, 206 (2), pp.614-636. ⟨10.1111/nph.13253⟩, New Phytologist, 206(2), 614-636, Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP, Digital.CSIC. Repositorio Institucional del CSIC, instname
- Accession number :
- edsair.doi.dedup.....8b9e3f22d31188e94ef711571f4a0263