The potential of grass field margin management for enhancing beetle diversity in intensive livestock farms

A - Papers appearing in refereed journals

Woodcock, B. A., Potts, S. G., Pilgrim, E. S., Ramsay, A. J., Tscheulin, T., Parkinson, A. E., Smith, R. E. N., Gundrey, A. L., Brown, V. K. and Tallowin, J. R. B. 2007. The potential of grass field margin management for enhancing beetle diversity in intensive livestock farms. Journal of Applied Ecology. 44 (1), pp. 60-69.

AuthorsWoodcock, B. A., Potts, S. G., Pilgrim, E. S., Ramsay, A. J., Tscheulin, T., Parkinson, A. E., Smith, R. E. N., Gundrey, A. L., Brown, V. K. and Tallowin, J. R. B.
Abstract

Summary 1 Declining populations of UK grassland flora and fauna have been attributed to intensification of agricultural management practices, including changes in cutting, fertilizer, grazing and drainage regimes. We aimed to develop field margin management practices that could reverse declines in intensively managed grassland biodiversity that would have application in the UK and Europe. Here we focus on one aspect of grassland biodiversity, the beetles.

2 In four intensively managed livestock farms in south‐west England, 10‐m wide field margins in existing grasslands were managed to create seven treatments of increasing sward architectural complexity. This was achieved through combinations of inorganic (NPK) fertilizer, cattle grazing, and timing and height of cutting. To examine the potential influence of complexity on faunal diversity, beetles were identified to species level from suction samples taken between 2003 and 2005, and their assemblage structure was related to margin management, floral assemblages and sward architecture.

3 Beetle abundance, and species richness and evenness were influenced by margin management treatment and its interaction with year. Correlations with sward architecture and the percentage cover of dominant forbs and grasses were also found. Functional groups of the beetles showed different responses to the management treatments. In particular, higher proportional abundances of seed/flower‐feeding guilds were found in treatments not receiving NPK fertilizer.

4 The assemblage structure was shown to respond to margin management treatments, sward architecture and the percentage cover of dominant forbs and grasses. The most extensively managed treatments were characterized by distinct successional trajectories from the control treatment.

5 Synthesis and applications. This study provides management options suitable for use within agri‐environment schemes intended to improve faunal diversity associated with intensively managed lowland grasslands. Field margins receiving either no management or a single July silage cut were shown to support greater abundances and species richness of beetles, although subtler modifications of conventional management may also be beneficial, for example the absence of NPK fertilizer while maintaining grazing and silage cutting systems.

Year of Publication2007
JournalJournal of Applied Ecology
Journal citation44 (1), pp. 60-69
Digital Object Identifier (DOI)doi:10.1111/j.1365-2664.2006.01258.x
Open accessPublished as bronze (free) open access
FunderDepartment of Environment, Food and Rural Affairs
Funder project or codeBehavioural and Community Ecology (BCE)
Project: 2420 4437
Potential for Enhancing Biodiversity in Intensive Livestock Farms
Publisher's version
Copyright license
Publisher copyright
File Access Level
Open
Output statusPublished
Publication dates
Online12 Dec 2006
Publication process dates
Accepted04 Oct 2006
ISSN0021-8901
PublisherWiley

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