A quantitative literature analysis of global invertebrate responses to agricultural intensification

Attwood, Simon J. and Maron, Martine and Zammit, Charlie and House, Alan (2005) A quantitative literature analysis of global invertebrate responses to agricultural intensification. In: Ecological Society of Australia Annual Conference 2005 (ESA 2005), 28 November - 2 December 2005, Brisbane, Australia.

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Abstract

Declines in biological diversity due to the expansion and intensification of agriculture have generated considerable debate regarding specific cause of declines, implications for system function and options for reducing negative impacts. The effects of modern agriculture on invertebrates are of particular significance, given the roles these organisms play in driving fundamental ecosystem functions such as nutrient cycling, pest control and soil structure maintenance. To test for a universal response of invertebrate assemblages to various aspects of agricultural land use, I undertook a quantitative literature analysis, combining and analysing data from studies that addressed invertebrate assemblages in agricultural landscapes. The literature examined covered invertebrate taxonomic assemblage and functional group responses between three broad land uses - native vegetation, pasture and cropping. Assemblages were also compared between conventional cropping systems and reduced-input systems, in order to investigate the impacts of management activities such as tillage and pesticide application. These categories were considered to represent a gradient of increasing agricultural intensity/disturbance, with native vegetation representing the least intensive disturbance regime and conventional cropping the highest. The results indicated a significant decline in taxonomic richness as land use and management disturbance increased, and a significant decline in predator richness and abundance with increasing disturbance. Overall invertebrate abundance decreased significantly with increased management in cropping systems, but displayed no clear pattern across different land uses. These results have important implications for ecosystem function and service delivery and the role that low-disturbance and refugial habitats may play in maintaining invertebrate diversity in intensive systems.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Poster)
Refereed: Yes
Item Status: Live Archive
Additional Information: Conference publication consists of only the abstracts of conference presentations. Abstract only posted here.
Depositing User: epEditor USQ
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 11 Oct 2007 00:28
Last Modified: 02 Jul 2013 22:34
Uncontrolled Keywords: agricultural intensification; global; invertebrates; responses; effects
Fields of Research (FOR2008): 07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070108 Sustainable Agricultural Development
05 Environmental Sciences > 0501 Ecological Applications > 050102 Ecosystem Function
06 Biological Sciences > 0602 Ecology > 060202 Community Ecology(excl. Invasive Species Ecology)
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9608 Flora, Fauna and Biodiversity > 960804 Farmland, Arable Cropland and Permanent Cropland Flora, Fauna and Biodiversity
URI: http://eprints.usq.edu.au/id/eprint/790

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