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<title>UTas ePrints - Effects of long-term fox baiting on species composition and abundance in an Australian lizard community</title>
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<meta content="Olsson, Mats" name="eprints.creators_name" />
<meta content="Wapstra, Erik" name="eprints.creators_name" />
<meta content="Swan, Gerry" name="eprints.creators_name" />
<meta content="Snaith, Ern" name="eprints.creators_name" />
<meta content="Clarke, Ron" name="eprints.creators_name" />
<meta content="Madsen, Thomas" name="eprints.creators_name" />
<meta content="molsson@uow.edu.au" name="eprints.creators_id" />
<meta content="erik.wapstra@utas.edu.au" name="eprints.creators_id" />
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<meta content="2007-10-15 03:55:09" name="eprints.datestamp" />
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<meta content="Effects of long-term fox baiting on species composition and
abundance in an Australian lizard community" name="eprints.title" />
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<meta content="270706" name="eprints.subjects" />
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<meta content="fox control, lizard community structure, pest management, species composition.
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<meta content="We report on the effects of almost a decade of 1080-fox baiting on a lizard community in a mosaic
Australian habitat. Replicated comparisons of baited versus non-baited control areas with near-identical histories
of bush fires, grazing and climate showed a higher density of red fox tracks (Canis vulpes) in the non-baited areas.
Furthermore, the fox-baited areas showed a more than five times higher density of sand goannas (Varanus gouldii),
a species that strongly overlaps the red fox in food niche breadth and is itself a direct target of fox predation, in
particular its eggs and young. Exclusion of predators from a natural habitat led to significant increases in the
density of small lizards, suggesting that predation can drive lizard population dynamics in this ecosystem.
Replicated pitfall-trapping in three habitats in the control areas (with high fox and low goanna density) versus the
baited areas (with low fox and high goanna density) showed that fox baiting had positive effects on the density of
diurnal scincid lizards in open grassland, whereas the control areas showed higher density of nocturnal gecko
lizards. Our interpretation is that fox removal may result in a shift in the top predator towards the sand goanna.
Historically, this indigenous, endemic species was the natural top predator. It has co-evolved with its prey and
that may have moulded it into a more efficient lizard predator per encounter than the introduced fox.
" name="eprints.abstract" />
<meta content="2005-12" name="eprints.date" />
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<meta content="Austral Ecology" name="eprints.publication" />
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<meta content="Banks P. B., Dickman C. R. & Newsome A. E. (1998) Ecological
costs of feral predator control: foxes and rabbits. J.
Wildl. Manage. 62, 766–72.
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Sons, Sydney.
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some Eucalypt forests in eastern New South Wales. Wildl.
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mallee. In: Biology of the Australasian Frogs and Reptiles (eds
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mallee dragon (Amphibilorus fordi) and its adaptations to
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edn. Reed New Holland, Sydney.
Greer A. E. (1989) The Biology and Evolution of Australian Lizards.
Surrey Beatty and Sons, Sydney.
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for small scincid lizards. Herpetol. Rev. 21, 87–8.
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flushing to lizards and anurans. Herpetologica 35, 107–10.
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Distribution and Influence. CSIRO Publishing, Collingwood.
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for assessing the effects of fire on reptile populations
in Sturt National Park. Aust. J. Herpetol. 1, 17–22.
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Western Australia. Wildl. Res. 28, 341–9.
Shine R. (1986) Food habits, habitats and reproductive biology
of four sympatric species of varanid lizards in tropical Australia.
Herpetologica 42, 346–60.
Short J., Turner B. & Risbey D. (2002) Control of feral cats for
nature conservation. III. Trapping. Wildl. Res. 29, 475–87.
Wauters L. A. & Gurnell J. (1999) The mechanism of replacement
of red squirrels by grey squirrels: a test of the interference
competition hypothesis. Ethology 105, 1053–71.
Wilson G., Dexter N., O’Brien P. & Bomford M. (1992) Pest
Animals in Australia: A Survey of Introduced Wild Mammals.
Bureau of Rural Resources, Canberra." name="eprints.referencetext" />
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<meta content="We report on the effects of almost a decade of 1080-fox baiting on a lizard community in a mosaic
Australian habitat. Replicated comparisons of baited versus non-baited control areas with near-identical histories
of bush fires, grazing and climate showed a higher density of red fox tracks (Canis vulpes) in the non-baited areas.
Furthermore, the fox-baited areas showed a more than five times higher density of sand goannas (Varanus gouldii),
a species that strongly overlaps the red fox in food niche breadth and is itself a direct target of fox predation, in
particular its eggs and young. Exclusion of predators from a natural habitat led to significant increases in the
density of small lizards, suggesting that predation can drive lizard population dynamics in this ecosystem.
Replicated pitfall-trapping in three habitats in the control areas (with high fox and low goanna density) versus the
baited areas (with low fox and high goanna density) showed that fox baiting had positive effects on the density of
diurnal scincid lizards in open grassland, whereas the control areas showed higher density of nocturnal gecko
lizards. Our interpretation is that fox removal may result in a shift in the top predator towards the sand goanna.
Historically, this indigenous, endemic species was the natural top predator. It has co-evolved with its prey and
that may have moulded it into a more efficient lizard predator per encounter than the introduced fox.
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<h1 class="ep_tm_pagetitle">Effects of long-term fox baiting on species composition and abundance in an Australian lizard community</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Olsson, Mats</span> and <span class="person_name">Wapstra, Erik</span> and <span class="person_name">Swan, Gerry</span> and <span class="person_name">Snaith, Ern</span> and <span class="person_name">Clarke, Ron</span> and <span class="person_name">Madsen, Thomas</span> (2005) <xhtml:em>Effects of long-term fox baiting on species composition and abundance in an Australian lizard community.</xhtml:em> Austral Ecology, 30 (8). pp. 907-913. ISSN 1442-9985</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2193/2/longterm_fox.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2193/2/longterm_fox.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />85Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="2787" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1111/j.1442-9993.2005.01534.x">http://dx.doi.org/10.1111/j.1442-9993.2005.01534.x</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">We report on the effects of almost a decade of 1080-fox baiting on a lizard community in a mosaic
Australian habitat. Replicated comparisons of baited versus non-baited control areas with near-identical histories
of bush fires, grazing and climate showed a higher density of red fox tracks (Canis vulpes) in the non-baited areas.
Furthermore, the fox-baited areas showed a more than five times higher density of sand goannas (Varanus gouldii),
a species that strongly overlaps the red fox in food niche breadth and is itself a direct target of fox predation, in
particular its eggs and young. Exclusion of predators from a natural habitat led to significant increases in the
density of small lizards, suggesting that predation can drive lizard population dynamics in this ecosystem.
Replicated pitfall-trapping in three habitats in the control areas (with high fox and low goanna density) versus the
baited areas (with low fox and high goanna density) showed that fox baiting had positive effects on the density of
diurnal scincid lizards in open grassland, whereas the control areas showed higher density of nocturnal gecko
lizards. Our interpretation is that fox removal may result in a shift in the top predator towards the sand goanna.
Historically, this indigenous, endemic species was the natural top predator. It has co-evolved with its prey and
that may have moulded it into a more efficient lizard predator per encounter than the introduced fox.
</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">The definitive version is available at www.blackwell-synergy.com
</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">fox control, lizard community structure, pest management, species composition.
</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270706.html">270000 Biological Sciences > 270700 Ecology and Evolution > 270706 Life Histories (incl. Population Ecology)</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2193</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Erik Wapstra</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">15 Oct 2007 14:55</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2193;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2193">item control page</a></p>
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