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  5.     <title>UTas ePrints - Linking richness, community variability, and invasion resistance with patch size</title>
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  13.     <meta content="Dunstan, Piers K." name="eprints.creators_name" />
  14. <meta content="Johnson, Craig R." name="eprints.creators_name" />
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  21. <meta content="Linking richness, community variability, and invasion resistance with patch size" name="eprints.title" />
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  25. <meta content="invasions; marine benthic invertebrates; patch size; spatial model; species area; species richness; variability" name="eprints.keywords" />
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  27. <meta content="The influence of community dynamics on the success or failure of an invasion is
  28. of considerable interest. What has not been explored is the influence of patch size on the
  29. outcomes of invasions for communities with the same species pool. Here we use an empirically
  30. validated spatial model of a marine epibenthic community to examine the effects of patch size
  31. on community variability, species richness, invasion, and the relationships between these
  32. variables. We found that the qualitative form of the relationship between community
  33. variability and species richness is determined by the size of the model patch. In small patches,
  34. variability decreases with species richness, but beyond a critical patch size, variability increases
  35. with increasing richness. This occurs because in large patches large, long-lived colonies attain
  36. sufficient size to minimize mortality and dominate the community, leading to decreased species
  37. richness and community variability. This mechanism cannot operate on smaller patches where
  38. the size of colonies is limited by the patch size and mortality is high irrespective of species
  39. identity. Further, invasion resistance is strongly correlated with community variability. Thus,
  40. the relationship between species richness and invasion resistance is also determined by patch
  41. size. These patterns are generated largely by an inverse relationship between colony size and
  42. mortality, and they depend on the spatial nature and patch size of the community. Our results
  43. suggest that a continuum of possible relationships can exist between species richness,
  44. community variability, invasion resistance, and area. These relationships are emergent
  45. behaviors generated by the individual properties of the particular component species of a
  46. community." name="eprints.abstract" />
  47. <meta content="2006" name="eprints.date" />
  48. <meta content="published" name="eprints.date_type" />
  49. <meta content="Ecology" name="eprints.publication" />
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  56. <meta content="http://dx.doi.org/10.1890/0012-9658(2006)87[2842:LRCVAI]2.0.CO;2" name="eprints.official_url" />
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  186. neighbours on the growth and survival of shrub seedlings
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  194. <meta content="Dunstan, Piers K. and Johnson, Craig R. (2006) Linking richness, community variability, and invasion resistance with patch size. Ecology, 87 (11). pp. 2842-2850." name="eprints.citation" />
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  200. <meta content="270702 Marine and Estuarine Ecology (incl. Marine Ichthyology)" name="DC.subject" />
  201. <meta content="The influence of community dynamics on the success or failure of an invasion is
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  203. outcomes of invasions for communities with the same species pool. Here we use an empirically
  204. validated spatial model of a marine epibenthic community to examine the effects of patch size
  205. on community variability, species richness, invasion, and the relationships between these
  206. variables. We found that the qualitative form of the relationship between community
  207. variability and species richness is determined by the size of the model patch. In small patches,
  208. variability decreases with species richness, but beyond a critical patch size, variability increases
  209. with increasing richness. This occurs because in large patches large, long-lived colonies attain
  210. sufficient size to minimize mortality and dominate the community, leading to decreased species
  211. richness and community variability. This mechanism cannot operate on smaller patches where
  212. the size of colonies is limited by the patch size and mortality is high irrespective of species
  213. identity. Further, invasion resistance is strongly correlated with community variability. Thus,
  214. the relationship between species richness and invasion resistance is also determined by patch
  215. size. These patterns are generated largely by an inverse relationship between colony size and
  216. mortality, and they depend on the spatial nature and patch size of the community. Our results
  217. suggest that a continuum of possible relationships can exist between species richness,
  218. community variability, invasion resistance, and area. These relationships are emergent
  219. behaviors generated by the individual properties of the particular component species of a
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  334.     <h1 class="ep_tm_pagetitle">Linking richness, community variability, and invasion resistance with patch size</h1>
  335.     <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Dunstan, Piers K.</span> and <span class="person_name">Johnson, Craig R.</span> (2006) <xhtml:em>Linking richness, community variability, and invasion resistance with patch size.</xhtml:em> Ecology, 87 (11). pp. 2842-2850.</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/1052/1/2006_Dunstan_%26_Johnson_Ecology_Richness.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/1052/1/2006_Dunstan_%26_Johnson_Ecology_Richness.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />129Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="1232" 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/10.1890/0012-9658(2006)87[2842:LRCVAI]2.0.CO;2">http://dx.doi.org/10.1890/0012-9658(2006)87[2842:LRCVAI]2.0.CO;2</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The influence of community dynamics on the success or failure of an invasion is&#13;
  336. of considerable interest. What has not been explored is the influence of patch size on the&#13;
  337. outcomes of invasions for communities with the same species pool. Here we use an empirically&#13;
  338. validated spatial model of a marine epibenthic community to examine the effects of patch size&#13;
  339. on community variability, species richness, invasion, and the relationships between these&#13;
  340. variables. We found that the qualitative form of the relationship between community&#13;
  341. variability and species richness is determined by the size of the model patch. In small patches,&#13;
  342. variability decreases with species richness, but beyond a critical patch size, variability increases&#13;
  343. with increasing richness. This occurs because in large patches large, long-lived colonies attain&#13;
  344. sufficient size to minimize mortality and dominate the community, leading to decreased species&#13;
  345. richness and community variability. This mechanism cannot operate on smaller patches where&#13;
  346. the size of colonies is limited by the patch size and mortality is high irrespective of species&#13;
  347. identity. Further, invasion resistance is strongly correlated with community variability. Thus,&#13;
  348. the relationship between species richness and invasion resistance is also determined by patch&#13;
  349. size. These patterns are generated largely by an inverse relationship between colony size and&#13;
  350. mortality, and they depend on the spatial nature and patch size of the community. Our results&#13;
  351. suggest that a continuum of possible relationships can exist between species richness,&#13;
  352. community variability, invasion resistance, and area. These relationships are emergent&#13;
  353. behaviors generated by the individual properties of the particular component species of a&#13;
  354. community.</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">Additional Information:</th><td valign="top" class="ep_row">Copyright by the Ecological Society of America</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">invasions; marine benthic invertebrates; patch size; spatial model; species area; species richness; variability</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/270702.html">270000 Biological Sciences &gt; 270700 Ecology and Evolution &gt; 270702 Marine and Estuarine Ecology (incl. Marine Ichthyology)</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">1052</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">Professor Craig R. Johnson</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">18 May 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">04 Feb 2008 16:09</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=1052;">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=1052">item control page</a></p>
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