Wagner, F.H.; Bräuning, A.; Homeier, J.; Spannl, S.; Volland, F. & et, a. (2016): <b>Climate seasonality limits leaf carbon assimilation and wood productivity in tropical forests</b>. <i>Biogeosciences</i> <b>13</b>, 2537–2562.
Resource Description
Title:
Climate seasonality limits leaf carbon assimilation and wood productivity in tropical forests
FOR816dw ID:
1484
Publication Date:
2016-04-28
License and Usage Rights:
PAK 823-825 data user agreement. (www.tropicalmountainforest.org/dataagreementp3.do)
Resource Owner(s):
Individual:
Fabien H. Wagner
Contact:
email:
webmaster <at> tropicalmountainforest.org
Individual:
Achim Bräuning
Contact:
email:
achim.braeuning <at> fau.de
University of Erlangen-Nuremberg
Institute of Geography
Wetterkreuz 15
91058 Erlangen
Germany
Individual:
Jürgen Homeier
Contact:
email:
jhomeie <at> gwdg.de
Faculty of Resource Management
University of Applied Sciences and Arts (HAWK)
37077 Göttingen
Germany
Individual:
Susanne Spannl
Contact:
email:
susanne.spannl <at> web.de
Hermannstr. 31
12049 Berlin
Germany
The seasonal climate drivers of the carbon cycle<br/>
in tropical forests remain poorly known, although these<br/>
forests account for more carbon assimilation and storage than<br/>
any other terrestrial ecosystem. Based on a unique combination<br/>
of seasonal pan-tropical data sets from 89 experimental<br/>
sites (68 include aboveground wood productivity measurements<br/>
and 35 litter productivity measurements), their associated<br/>
canopy photosynthetic capacity (enhanced vegetation<br/>
index, EVI) and climate, we ask how carbon assimilation<br/>
and aboveground allocation are related to climate seasonality<br/>
in tropical forests and how they interact in the seasonal<br/>
carbon cycle. We found that canopy photosynthetic capacity<br/>
seasonality responds positively to precipitation when rainfall<br/>
is < 2000mm/yr (water-limited forests) and to radiation<br/>
otherwise (light-limited forests). On the other hand, independent<br/>
of climate limitations, wood productivity and litterfall<br/>
are driven by seasonal variation in precipitation and<br/>
evapotranspiration, respectively. Consequently, light-limited<br/>
forests present an asynchronism between canopy photosynthetic<br/>
capacity and wood productivity. First-order control by<br/>
precipitation likely indicates a decrease in tropical forest productivity in a drier climate in water-limited forest, and in current light-limited forest with future rainfall < 2000mm/yr.
Keywords:
| climate | tree growth | litterfall |
Literature type specific fields:
ARTICLE
Journal:
Biogeosciences
Volume:
13
Page Range:
2537–2562
Metadata Provider:
Individual:
Jürgen Homeier
Contact:
email:
jhomeie <at> gwdg.de
Faculty of Resource Management
University of Applied Sciences and Arts (HAWK)
37077 Göttingen
Germany
