Lancaster EPrints

Effect of density and species richness of soil mesofauna on nutrient mineralisation and plant growth.

Cole, Lisa and Dromph, Karsten M. and Boaglio, Vincent and Bardgett, Richard D. (2004) Effect of density and species richness of soil mesofauna on nutrient mineralisation and plant growth. Biology and Fertility of Soils, 39 (5). pp. 337-343. ISSN 0178-2762

Full text not available from this repository.

Abstract

The aim of this study was to test the relative importance of changes in density and species richness of soil mesofauna as determinants of nutrient mineralisation and plant growth. The experiment was carried out using microcosms containing a mixture of plant litter and soil in which seedlings of Lolium perenne were planted, and a range of combinations of levels of density and species richness of microarthropods added. Over the duration of the experiment, nutrient release, measured as concentrations of NO3 --N and total N in leachates, increased significantly with increasing microarthropod density, but decreased with increasing species richness. Leachate concentrations of NH4 +-N, dissolved organic N and C (DON and DOC) were not affected by the faunal treatments. Soil respiration, a measure of microbial activity, decreased with increasing density of microarthropods, whereas microbial biomass was not affected by microarthropods. Increasing density of soil animals had a negative effect on the shoot biomass of L. perenne while the effect of species richness was positive. Neither the species richness nor density of soil microarthropods was found to significantly influence root biomass. We conclude that variations in animal density had a greater influence on soil nutrient mineralisation processes than did species richness. Possible reasons for these opposing effects of animal density and diversity on soil N mobilization are discussed.

Item Type: Article
Journal or Publication Title: Biology and Fertility of Soils
Uncontrolled Keywords: Biodiversity - Nutrient mineralisation - Soil fauna - Species density
Subjects: Q Science > QH Natural history > QH301 Biology
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 10247
Deposited By: Prof Richard Bardgett
Deposited On: 10 Jul 2008 16:57
Refereed?: Yes
Published?: Published
Last Modified: 17 Sep 2013 10:48
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/10247

Actions (login required)

View Item