| |
Record |
Links |
|
Author |
Barantal, S.; Schimann, H.; Fromin, N.; Hattenschwiler, S. |
|
| |
Title |
Nutrient and Carbon Limitation on Decomposition in an Amazonian Moist Forest |
Type |
Journal Article |
| |
Year |
2012 |
Publication |
Ecosystems |
Abbreviated Journal |
Ecosystems |
|
| |
Volume |
15 |
Issue |
7 |
Pages |
1039-1052 |
|
| |
Keywords |
energy limitation; labile carbon; litter quality; nitrogen; phosphorus; priming effect; soil fauna; tropical forest |
|
| |
Abstract |
Tropical forests determine global biogeochemical cycles to a large extent, but control factors for key ecosystem processes such as decomposition remain poorly understood. With a full-factorial C (cellulose), N (urea), and P (phosphate) fertilization experiment, we tested the relative importance of C and nutrient limitation on litter decomposition in a mature lowland moist forest of French Guiana. Despite the previously demonstrated litter C quality control over decomposition and the very low soil P content (0. 1 mg g -1 of soil) at our study site, fertilization with C or P alone did not increase the decomposition of a wide range of litter types (N:P ratios between 20 and 80). Nitrogen fertilization alone also had no effect on decomposition. However, the combined fertilization with N and P resulted in up to 33. 5% more initial litter mass lost, with an increasing effect with wider litter N:P ratios. Soil fauna strongly stimulated litter mass loss and enhanced nutrient fertilization effects. Moreover, nutrient effects on decomposition increased with additional C fertilization in the presence of fauna. Our results suggest that increased N availability is required for a positive P effect on decomposition in the studied P-poor tropical forest. Further stimulation of decomposition by C amendment through priming indicates energy limitation of decomposers that is co-determined by nutrient availability. The demonstrated intricate control of the key resources C, N, and P on decomposition calls for an intensified research effort on multiple resource limitation on key processes in tropical forests and how they change under multiple human impacts. © 2012 Springer Science+Business Media, LLC. |
|
| |
Address |
UMR Ecologie des Forêts de Guyane (ECOFOG), INRA, Kourou, French Guiana |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue  |
|
Edition |
|
|
| |
ISSN |
14329840 (Issn) |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
Export Date: 2 November 2012; Source: Scopus; Coden: Ecosf; doi: 10.1007/s10021-012-9564-9; Language of Original Document: English; Correspondence Address: Schimann, H.; UMR Ecologie des Forêts de Guyane (ECOFOG), INRA, Kourou, French Guiana; email: heidy.schimann@ecofog.gf |
Approved |
no |
|
| |
Call Number |
EcoFoG @ webmaster @ |
Serial |
442 |
|
| Permanent link to this record |
