Functional diversity positively affects prey suppression by invertebrate predators: a meta-analysis

A - Papers appearing in refereed journals

Greenop, A., Woodcock, B. A., Wilby, A., Cook, S. M. and Pywell, R. F. 2018. Functional diversity positively affects prey suppression by invertebrate predators: a meta-analysis. Ecology. 99 (8), pp. 1771-1782.

AuthorsGreenop, A., Woodcock, B. A., Wilby, A., Cook, S. M. and Pywell, R. F.
Abstract

The use of pesticides within agricultural ecosystems has led to wide concern regarding negative effects on the environment. One possible alternative is the use of predators of pest species that naturally occur within agricultural ecosystems. However, the mechanistic basis for how species can be manipulated in order to maximise pest control remains unclear. We carried out a meta-analysis of 51 studies that manipulated predator species richness in reference to suppression of herbivore prey to determine which components of predator diversity affect pest control. Overall, functional diversity (FD) based on predator’s habitat domain, diet breadth and hunting strategy was ranked as the most important variable. Our analysis showed that increases in FD in polycultures led to greater prey suppression compared to both the mean of the component predator species, and the most effective predator species, in monocultures. Further analysis of individual traits indicated these effects are likely to be driven by broad niche differentiation and greater resource exploitation in functionally diverse predator communities. A decoupled measure of phylogenetic diversity, whereby the overlap in variation with FD was removed, was not found to be an important driver of prey suppression. Our results suggest that increasing FD in predatory invertebrates will help maximise pest control ecosystem services in agricultural ecosystems, with the potential to increase suppression above that of the most effective predator species

KeywordsFunctional diversity ; Phylogenetic diversity; Predator-prey interactions; Predator-prey interactions; Conservation biological control; Natural enemies; Biodiversity and ecosystem functioning; Agricultural ecosystems; Ecosystem services; Species richness
Year of Publication2018
JournalEcology
Journal citation99 (8), pp. 1771-1782
Digital Object Identifier (DOI)doi:10.1002/ecy.2378
PubMed ID29727489
Open accessPublished as green open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeASSIST - Achieving Sustainable Agricultural Systems
Publisher's version
Accepted author manuscript
Output statusPublished
Publication dates
Online04 May 2018
Publication process dates
Accepted01 May 2018
PublisherWiley-Blackwell
Wiley
Copyright licenseCC BY
ISSN0012-9658

Permalink - https://repository.rothamsted.ac.uk/item/8471z/functional-diversity-positively-affects-prey-suppression-by-invertebrate-predators-a-meta-analysis

15 total views
7 total downloads
0 views this month
1 downloads this month