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

Atkin, Owen K., Bloomfield, Keith J., Reich, Peter B., Tjoelke, Mark G., Asner, Gregory P., Bonal, Damien, Bönisch, Gehard, 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, François Yoko, Kattage, Jens, Lambers, Hans, Liddell, Michael J., Lloyd, Jon, Lusk, Christopher H., Martin, Roberta E., Maskimov, Ayal P., Maximov, Trofim C., Malhi, Yadvinder, Medlyn, Belinda E., Meir, Patrick, Mercado, Lina, Mirotchnick, Nicholas, Ng, Desmond, Niinemets, Ulo, 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., Valldares, Fernando, Veneklaas, Erik J., Weerasinghe, Lasantha K., Wirth, Christian, Wright, Ian J., Wythers, Kirk R., Xiang, Jen, Xiang, Shuang, and Zaragoza-Castells, Joana (2015) Global variability in leaf respiration in relation to climate, plant functional types and leaf traits. New Phytologist, 206 (2). pp. 614-636.

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Abstract

-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 ID: 39271
Item Type: Article (Refereed Research - C1)
ISSN: 1469-8137
Funders: Australian Research Council (ARC), Terrestrial Ecosystem Research Network (TERN), UK Natural Environment Research Council (NERC), Moore Foundation
Projects and Grants: ARC FT0991448, ARC DP0986823, ARC DP1093759, ARC DP130101252, ARC CE140100008, ARC FT110100457, NERC NE/C51621X/1, NERC 709 NE/F002149/1
Date Deposited: 25 Jun 2015 03:17
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0501 Ecological Applications > 050101 Ecological Impacts of Climate Change @ 30%
05 ENVIRONMENTAL SCIENCES > 0501 Ecological Applications > 050102 Ecosystem Function @ 35%
06 BIOLOGICAL SCIENCES > 0602 Ecology > 060203 Ecological Physiology @ 35%
SEO Codes: 96 ENVIRONMENT > 9603 Climate and Climate Change > 960303 Climate Change Models @ 50%
96 ENVIRONMENT > 9603 Climate and Climate Change > 960305 Ecosystem Adaptation to Climate Change @ 50%
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