toggle visibility Search & Display Options

Select All    Deselect All
 |   | 
  Record Links
Author (up) Barantal, S.; Schimann, H.; Fromin, N.; Hattenschwiler, S. url  openurl
  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: Approved no  
  Call Number EcoFoG @ webmaster @ Serial 442  
Permanent link to this record
Select All    Deselect All
 |   | 

Save Citations:
Export Records: