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    <title>UTas ePrints - Geographic ranges, sympatry and the influence of environmental factors on the distribution of species of an endemic Tasmanian freshwater crayfish</title>
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<meta content="Geographic ranges, sympatry and the influence of environmental factors on the distribution of species of an endemic Tasmanian freshwater crayfish" name="eprints.title" />
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<meta content="The Tasmanian endemic freshwater crayfish genus Parastacoides is presently under review and 14 species have been recognised. The distributions of the putative species have been mapped using museum data. The distribution of geographical ranges of the species is highly skewed. Most species are local or short-range endemics, 11 of the 14 species (nearly 79%) having geographical ranges of less than 20 km2. Many sympatric contact zones exist where distributions of species meet, and in some cases the sympatric species partition the habitat. The majority of species appear capable of exploiting a wide variety of habitat types. Ecological factors such as climate, vegetation, substrate, baseline geology and burrow types do not seem to be major determinants of species distributions. A, but adequate rainfall and a low evaporation rate appear to be the major factors determining the eastern boundary of Parastacoides. It is likely that that historical factors have played an important role in determining the present distribution patterns." name="eprints.abstract" />
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<meta content="Barraclough, T.G. and Vogler, A.P. (2000). Detecting the geographical pattern of speciation from species-level phylogenies. The American Naturalist 155(4), 419-434.

Brown, J. H. (1984). On the relationship between abundance and distribution of species. American Naturalist 124, 255-279.

Brown, J. H., Stevens, G. C. and Kaufman, D. M. (1996). The geographic range: size, shape, boundaries and internal structure. Annual Review of Ecology and Systematics 27, 597-623.

Dysesius, M. and Jansson, R. (2000). Evolutionary consequences of changes in species’ geographical distributions driven by Milankovitch climate oscillations. Proceedings of the National Academy of Science 97(16), 9115-9120.

Fradd, P.J. (1979). Aspects of the eco-physiology of the freshwater crayfish, Parastacoides tasmanicus (Clark 1936). Unpublished PhD thesis, University of Tasmania.

Gaston, K. J. and Blackburn, T. M. (1999). A critique for macroecology. Oikos 84, 353-368.

Gaston, K. J., Blackburn, T. M., Greenwood, J. J. D., Gregory, R. D., Quinn, R. M. and Lawton, J. H. (2000). Abundance-occupancy relationships. Journal of Applied Ecology 37, 39-59.

Gaston, K. J., Blackburn, T. M. and Spicer, J. I. (1998). Rapoport's rule: time for an epitaph? Trends in Ecology &amp; Evolution 13, 70-74.

Gaston, K. J. and Spicer, J. I. (2001). The relationship between range size and niche breadth: a test using five species of Gammarus (Amphipoda). Global Ecology &amp; Biogeography 10, 179-188.

Growns, I.O. (1986). Aspects of the feeding ecology of Parastacoides tasmanicus tasmanicus (Clark). Unpublished honours thesis, University of Tasmania.

Growns, I. O. and Richardson, A. M. M. (1988). The diet and burrowing habits of the freshwater crayfish Parastacoides tasmanicus tasmanicus Clark (Decapoda: Parastacidae). Australian Journal of Marine and Freshwater Research 39, 525-534.

Hansen, B. (2001). Systematics and Phylogeny of the Tasmanian freshwater crayfish genus Parastacoides (Decapoda: Parastacidae). Unpublished PhD thesis, University of Tasmania.

Hansen, B. and Richardson, A.M.M. (1999). Interpreting the geographic range, habitat and evolution of the Tasmanian freshwater crayfish genus Parastacoides from a museum collection. In The Other 99% - the Conservation and Biodiversity of Invertebrates (W. Ponder and D. Lunney, Eds) 210-218. Transactions of the Royal Zoological Society of New South Wales. Surrey Beatty &amp; Sons, Chipping Norton.

Hansen, B., Adams, M., Krasnicki, T. and Richardson, A.M.M. (2001). Substantial allozyme diversity in the freshwater crayfish Parastacoides tasmanicus supports extensive cryptic speciation. Invertebrate Taxonomy 15(5), 667-679.

Hill, R.S., Macphail, M.K. and Jordan, G.J. (1999). Tertiary History and Origins of the Flora and Vegetation. In Vegetation of Tasmania 39-63. Australian Biological Resources Study, Hobart.

Horwitz, P. (1986). The systematics and zoogeography of the freshwater crayfish genus Engaeus Erichson (Decapoda; Parastacidae). Unpublished PhD thesis, University of Tasmania.

Horwitz, P. H. J. and Richardson, A. M. M. (1986). An ecological classification of the burrows of Australian freshwater crayfish. Australian Journal of Marine and Freshwater Research 37, 237-242.

Horwitz, P.H.J., Richardson, A.M.M. and Cramp, P. (1985). Aspects of the life history of the burrowing freshwater crayfish Engaeus leptorhynchus, at Rattrays Marsh, north east Tasmania. Tasmanian Naturalist 82, 1-5.

Jackson, W.D. (1999a). The Tasmanian Environment. In Vegetation of Tasmania11-38. Australian Biological Resources Study, Hobart.

Jackson, W.D. (1999b). Palaeohistory of vegetation change – the last two million years. In Vegetation of Tasmania 64-88. Australian Biological Resources Study, Hobart.

Jordan, G.J., Macphail, M.K., Barnes, R. and  Hill, R.S. (1995). An Early to Middle Pleistocene flora of subalpine affinities in lowland western Tasmania. Australian Journal of Botany 43, 231-242.

Kiernan, K. (1990). The extent of Late Cenozoic glaciation in the Central Highlands of Tasmania, Australia. Arctic and Alpine Research 22(4), 341-354.

Kirkpatrick, J.B. and Fowler, M. (1998). Locating likely glacial forest refugia in Tasmania using palynological and ecological information to test alternative climatic models. Biological Conservation 85, 171-182.

Lake, P.S. and Newcombe, K.J. (1975). Observations on the ecology of the crayfish Parastacoides tasmanicus (Decapoda; Parastacidae) from south-western Tasmania. Australian Zoologist 18(3), 197-213.

Letcher, A.J., Purvis, A., Nee, S. and Harvey, P.H. (1994). Patterns of overlap in the geographic ranges of Palearctic and British mammals. Journal of Animal Ecology 63, 871-879.

MapInfo (1999). MapInfo Professional (version 5.5). MapInfo Corporation, New York.

Mesibov, R. (1994). Faunal breaks in Tasmania and their significance for invertebrate conservation. Memoirs of the Queensland Museum 36, 133-136.

Richardson, A. M. M. and Horwitz, P. H. J. (1988). Habitat partitioning in parastacid crayfish. Freshwater Crayfish 7, 91-97.

Richardson, A.M.M. and Swain, R. (1978). The distribution of burrowing crayfish. Lower Gordon River Scientific Survey, The Hydro-Electric Commission, Tasmania.

Richardson, A.M.M. and Swain, R. (1980). Habitat requirements and distribution of Engaeus cisternarius and three subspecies of Parastacoides tasmanicus (Decapoda: Parastacidae), burrowing crayfish from an area of south-western Tasmania. Australian Journal of Marine and Freshwater Research 31, 475-484.

Richardson, A.M.M. and Swain, R. (1991). Pattern and persistence in the burrows of two species of the freshwater crayfish, Parastacoides (Decapoda: Parastacidae), in southwest Tasmania. Memoirs of the Queensland Museum 283.

Richardson, A.M.M. and Wong, V. (1995). The effect of a burrowing crayfish, Parastacoides sp., on the vegetation of Tasmanian wet heathlands. Freshwater Crayfish 10, 174-182.

Sheil, R.J., Koste, W. and Tan, L.W. (1989). Tasmania revisited: rotifer communities and habitat heterogeneity. Hydrobiology 186/187, 239-245.

Stevens, G.C. (1989). The latitudinal gradient in geographic range: how so many species coexist in the tropics. American Naturalist 133, 240-256.

Sumner, C.E. (1978). A revision of the genus Parastacoides Clark (Crustacea: Decapoda: Parastacidae). Australian Journal of Zoology 26, 809-821.

Swain, R., Marker, P.F. and Richardson, A.M.M. (1987). Respiratory responses to hypoxia in stream-dwelling (Astacopsis franklinii) and burrowing (Parastacoides tasmanicus) parastacid crayfish. Comparative Biochemistry and Physiology 87A(3), 813-817.

Wong, V. (1991). Interactions between burrowing crayfish and the plant community of buttongrass moorland. Unpublished Honours thesis, University of Tasmania.
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    <h1 class="ep_tm_pagetitle">Geographic ranges, sympatry and the influence of environmental factors on the distribution of species of an endemic Tasmanian freshwater crayfish</h1>
    <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Hansen, Brita</span> and <span class="person_name">Richardson, A.M.M.</span> (2001) <xhtml:em>Geographic ranges, sympatry and the influence of environmental factors on the distribution of species of an endemic Tasmanian freshwater crayfish.</xhtml:em> Invertebrate Systematics, 16 . pp. 621-629.</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/1482/1/Hansen%26ARGeogRanges.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/1482/1/Hansen%26ARGeogRanges.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />1042Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="1886" name="docid" accept-charset="utf-8" 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/10.1071/IS05035">http://dx.doi.org/10.1071/IS05035</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The Tasmanian endemic freshwater crayfish genus Parastacoides is presently under review and 14 species have been recognised. The distributions of the putative species have been mapped using museum data. The distribution of geographical ranges of the species is highly skewed. Most species are local or short-range endemics, 11 of the 14 species (nearly 79%) having geographical ranges of less than 20 km2. Many sympatric contact zones exist where distributions of species meet, and in some cases the sympatric species partition the habitat. The majority of species appear capable of exploiting a wide variety of habitat types. Ecological factors such as climate, vegetation, substrate, baseline geology and burrow types do not seem to be major determinants of species distributions. A, but adequate rainfall and a low evaporation rate appear to be the major factors determining the eastern boundary of Parastacoides. It is likely that that historical factors have played an important role in determining the present distribution patterns.</p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><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">Keywords:</th><td valign="top" class="ep_row">Freshwater crayfish, geographic range, sympatry, parapatry, Tasmania</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/270703.html">270000 Biological Sciences &gt; 270700 Ecology and Evolution &gt; 270703 Terrestrial Ecology</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270709.html">270000 Biological Sciences &gt; 270700 Ecology and Evolution &gt; 270709 Biogeography</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1482</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">A/Prof Alastair Richardson</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">27 Jul 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">12 Feb 2008 12:18</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=1482;">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&amp;eprintid=1482">item control page</a></p>
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