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The linkages betwee...
The linkages between photosynthesis, productivity, growth and biomass in lowland Amazonian forests
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Malhi, Yadvinder (author)
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Doughty, Christopher E. (author)
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Goldsmith, Gregory R. (author)
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- Metcalfe, Dan (author)
- Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science
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Girardin, Cecile A. J. (author)
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Marthews, Toby R. (author)
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del Aguila-Pasquel, Jhon (author)
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Aragao, Luiz E. O. C. (author)
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Araujo-Murakami, Alejandro (author)
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Brando, Paulo (author)
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da Costa, Antonio C. L. (author)
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Silva-Espejo, Javier E. (author)
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Farfan Amezquita, Filio (author)
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Galbraith, David R. (author)
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Quesada, Carlos A. (author)
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Rocha, Wanderley (author)
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Salinas-Revilla, Norma (author)
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Silverio, Divino (author)
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Meir, Patrick (author)
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Phillips, Oliver L. (author)
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(creator_code:org_t)
- 2015-03-20
- 2015
- English.
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In: Global Change Biology. - : Wiley. - 1354-1013. ; 21:6, s. 2283-2295
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Abstract
Subject headings
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- Understanding the relationship between photosynthesis, net primary productivity and growth in forest ecosystems is key to understanding how these ecosystems will respond to global anthropogenic change, yet the linkages among these components are rarely explored in detail. We provide the first comprehensive description of the productivity, respiration and carbon allocation of contrasting lowland Amazonian forests spanning gradients in seasonal water deficit and soil fertility. Using the largest data set assembled to date, ten sites in three countries all studied with a standardized methodology, we find that (i) gross primary productivity (GPP) has a simple relationship with seasonal water deficit, but that (ii) site-to-site variations in GPP have little power in explaining site-to-site spatial variations in net primary productivity (NPP) or growth because of concomitant changes in carbon use efficiency (CUE), and conversely, the woody growth rate of a tropical forest is a very poor proxy for its productivity. Moreover, (iii) spatial patterns of biomass are much more driven by patterns of residence times (i.e. tree mortality rates) than by spatial variation in productivity or tree growth. Current theory and models of tropical forest carbon cycling under projected scenarios of global atmospheric change can benefit from advancing beyond a focus on GPP. By improving our understanding of poorly understood processes such as CUE, NPP allocation and biomass turnover times, we can provide more complete and mechanistic approaches to linking climate and tropical forest carbon cycling.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Skogsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Forest Science (hsv//eng)
Keyword
- allocation
- carbon cycle
- carbon use efficiency
- drought
- gross primary
- productivity
- net primary productivity
- residence time
- respiration
- root productivity
- tropical forests
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Malhi, Yadvinder
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Doughty, Christo ...
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Goldsmith, Grego ...
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Metcalfe, Dan
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Girardin, Cecile ...
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Marthews, Toby R ...
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show more...
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del Aguila-Pasqu ...
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Aragao, Luiz E. ...
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Araujo-Murakami, ...
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Brando, Paulo
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da Costa, Antoni ...
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Silva-Espejo, Ja ...
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Farfan Amezquita ...
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Galbraith, David ...
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Quesada, Carlos ...
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Rocha, Wanderley
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Salinas-Revilla, ...
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Silverio, Divino
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Meir, Patrick
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Phillips, Oliver ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Climate Research
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- AGRICULTURAL SCIENCES
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AGRICULTURAL SCI ...
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and Agriculture Fore ...
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and Forest Science
- Articles in the publication
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Global Change Bi ...
- By the university
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Lund University