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Global variability in leaf respiration in relation to climate, plant functional types and leaf traits

Atkin, Owen K.; Bloomfield, Keith J.; Reich, Peter B.; Tjoelker, Mark G.; Asner, Gregory P.; Bonal, Damien; Bönisch, Gerhard; Bradford, Matt G.; Cernusak, Lucas A.; Cosio, Eric G.; Creek, Danielle; Crous, Kristine Y.; Domingues, Tomas F.; Dukes, Jeffrey S.; Egerton, John J.G.; Evans, John R.; Farquhar, Graham D.; Fyllas, Nikolaos M.; Gauthier, Paul P.G.; Gloor, Emanuel; Gimeno, Teresa E.; Griffin, Kevin L.; Guerrieri, Rossella; Heskel, Mary A.; Huntingford, Chris; Ishida, Françoise Yoko; Kattge, Jens; Lambers, Hans; Liddell, Michael J.; Lloyd, Jon; Lusk, Christopher H.; Martin, Roberta E.; Maksimov, Ayal P.; Maximov, Trofim C.; Malhi, Yadvinder; Medlyn, Belinda E.; Meir, Patrick; Mercado, Lina M.; Mirotchnick, Nicholas; Ng, Desmond; Niinemets, Ülo; O'Sullivan, Odhran S.; Phillips, Oliver L.; Poorter, Lourens; Poot, Pieter; Prentice, I. Colin; Salinas, Norma; Rowland, Lucy M.; Ryan, Michael G.; Sitch, Stephen; Slot, Martijn; Smith, Nicholas G.; Turnbull, Matthew H.; Vanderwel, Mark C.; Valladares, Fernando; Veneklaas, Erik J.; Weerasinghe, Lasantha K.; Wirth, Christian; Wright, Ian J.; Wythers, Kirk R.; Xiang, Jen; Xiang, Shuang; Zaragoza-Castells, Joana. 2015 Global variability in leaf respiration in relation to climate, plant functional types and leaf traits. New Phytologist, 206 (2). 614-636. 10.1111/nph.13253

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Abstract/Summary

• 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. • 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. • 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. • 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).

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1111/nph.13253
CEH Sections: Reynard
ISSN: 0028-646X
Additional Keywords: acclimation, aridity, climate models, leaf nitrogen (N), photosynthesis, plant functional types (PFTs), respiration, temperature
NORA Subject Terms: Ecology and Environment
Biology and Microbiology
Date made live: 08 Feb 2016 12:37 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/512890

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