The diversity of insectivorous bat assemblages among habitats within a subtropical urban landscape

Hourigan, C. L., Catterall, Carla P., Jones, Darryl and Rhodes, Martin (2010) The diversity of insectivorous bat assemblages among habitats within a subtropical urban landscape. Austral Ecology, 35 8: 849-857. doi:10.1111/j.1442-9993.2009.02086.x

Author Hourigan, C. L.
Catterall, Carla P.
Jones, Darryl
Rhodes, Martin
Title The diversity of insectivorous bat assemblages among habitats within a subtropical urban landscape
Journal name Austral Ecology   Check publisher's open access policy
ISSN 1442-9985
Publication date 2010-12
Sub-type Article (original research)
DOI 10.1111/j.1442-9993.2009.02086.x
Volume 35
Issue 8
Start page 849
End page 857
Total pages 9
Place of publication Richmond, Vic., Australia
Publisher Wiley-Blackwell Publishing Asia
Collection year 2011
Language eng
Abstract We investigated the bat (Microchiroptera) diversity of four major habitat types within a large Australian subtropical city (Brisbane, Australia) to determine whether species richness was affected by habitat changes associated with urbanization, as suggested from studies elsewhere. Forty sites, ten in each habitat type (remnant bushland, parkland, low-density residential and high-density residential) were surveyed using acoustic bat detectors on six non-consecutive occasions. Fourteen bat species were recorded. The species accumulation curve of the entire Brisbane bat assemblage reached a plateau at 14 species. The total numbers of species in bushland, parkland, low-density residential and high-density residential habitats were 14, 13, 14 and 11 species, respectively. Asymptotic estimates of species richness for each habitat were close or equal to these totals. Mean asymptotic estimated species richness differed significantly among habitats, being lowest in high-density residential sites and highest in low-density residential sites. Evenness profiles were similar across habitats, and were not strongly dominated by a few species. Partitioning of diversity components showed that landscape (γ) diversity was mainly determined by the high species richness of low-density residential and bushland habitats (α diversity), rather than high beta (β) diversity among habitats. These findings contradict those of other studies on bat diversity in which species richness was highest within 'natural' areas of the urban landscape and assemblages were dominated by one or two species. This highlights the need for caution in making generalizations based on existing information, which is dominated by studies in temperate regions. © 2010 The Authors. Journal compilation © 2010 Ecological Society of Australia.
Keyword Spatial heterogeneity
Community ecology
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Official 2011 Collection
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Created: Sun, 02 Jan 2011, 00:21:26 EST