Differential contribution of soil biota groups to plant litter decomposition as mediated by soil use

Ecology Laboratory, Terrestrial Ecology Research Program, Basic Sciences Department – Ecology and Sustainable Development Institute, Universidad Nacional de Lujan, Lujan, Argentina
DOI
10.7287/peerj.preprints.710v1
Subject Areas
Agricultural Science, Ecology, Soil Science
Keywords
litterbags, organic matter turnover, soil use, soil fauna, agroecosystem, soil sustainability, litter decomposition
Copyright
© 2014 Casttro-Huerta et al.
Licence
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ PrePrints) and either DOI or URL of the article must be cited.
Cite this article
Casttro-Huerta RA, Falco LB, Sandler RV, Coviella C. 2014. Differential contribution of soil biota groups to plant litter decomposition as mediated by soil use. PeerJ PrePrints 2:e710v1

Abstract

Plant decomposition is dependant on the activity of the soil biota and its interactions with climate, soil properties, and plant residue inputs. This work assessed the roles of different groups of the soil biota on litter decomposition, and the way they are modulated by soil use. Litterbags of different mesh sizes were filled with standardized dried leaves and placed on the same soil different use intensities: Naturalized grasslands, recent agriculture, and intensive agriculture fields. During sixth months, litterbags of each mesh size were collected once a month per system with five replicates. The remaining mass was measured and decomposition rates calculated. Differences were found for the different biota groups, and they were dependant on soil use. Within systems, the results show that in the naturalized grasslands, the macrofauna had the highest contribution to decomposition. In the recent agricultural system it was the combined activity of the macro and mesofauna, and in the intensive agricultural use it was the mesofauna activity. These results underscore the relative importance and activity of the different groups of the edaphic biota and the effects of different soil uses on soil biota activity.

Author Comment

This manuscript is intended for later submission to PeerJ.

Supplemental Information

Castro-Huerta et al raw data

Remaining mass for all treatments and sampling dates

DOI: 10.7287/peerj.preprints.710v1/supp-1