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Ants as indicators for vertebrate fauna at a local scale: an assessment of cross-taxa surrogacy in a disturbed matrix

Citation

Bennett, JM and Kutt, AS and Johnson, CN and Robson, SKA, Ants as indicators for vertebrate fauna at a local scale: an assessment of cross-taxa surrogacy in a disturbed matrix, Biodiversity and Conservation, 18, (13) pp. 3407-3419. ISSN 0960-3115 (2009) [Refereed Article]


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Copyright Statement

Springer Science+Business Media B.V. 2009 The final publication is available at http://www.springerlink.com

DOI: doi:10.1007/s10531-009-9650-2

Abstract

We examined the spatial fidelity in the pattern in species richness, abundance and composition of ants, birds, mammals and reptiles in a Eucalyptus vegetation type in Australian tropical savanna woodland. We sampled 32 sites representing intact (uncleared) vegetation, and three treatments of different clearing age (2, 12 and 18 years). We investigated whether each fauna taxon could act a surrogate for pattern in the other, and whether they responded in parallel to time since clearing. Reptiles and mammals were combined into a single group. The correlation between taxa was low for abundance (the best being between rept/mamm and ant abundance R = 0.34) and moderate for species richness (varied from 0.36 to 0.44). Mantel tests identified a moderately strong relationship between bird and rept/mamm composition (R = 0.48). Recent clearing (212 years) depleted both abundance and species richness of the vertebrate fauna, whereas ant abun- dance spiked. Ant species richness was consistent over time since clearing. ANOSIM revealed that clearing age was a strong a priori predictor of birds and rept/mamm com- position (Global R = 0.48, 0.65, respectively), whereas it was not for ants (Global R = 0.20). Pair-wise comparisons suggested that for birds, rept/mamm, there was con- sistent changes in composition from intact woodlands to different aged clearing. This was not the case for ants; most distinct variation in composition occurred between treatments of increasing in clearing age (218 years R = 0.69, 1218 years R = 0.65). The results of this study do not support the use of ants as a surrogate of vertebrates at a local scale in a cleared and intact vegetation mosaic. We acknowledge that identification of universal surrogates and indicators are difficult to find, but funding and political expediency that demand rapid solutions to conservation planning necessitate continued investigation of the merits of using surrogate species.

Item Details

Item Type:Refereed Article
Keywords:Surrogates - Conservation - Clearing - Landscape - Reptiles - Mammals - Birds
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Community Ecology
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Sparseland, Permanent Grassland and Arid Zone Flora, Fauna and Biodiversity
Author:Johnson, CN (Professor Christopher Johnson)
ID Code:72191
Year Published:2009
Web of Science® Times Cited:6
Deposited By:Zoology
Deposited On:2011-08-23
Last Modified:2014-08-26
Downloads:0

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