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<title>UTas ePrints - Crown Structure & the Canopy Arthropod Biodiversity of 100 Year Old and Old Growth Tasmanian Eucalyptus obliqua</title>
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<meta content="Bar-Ness, Yoav Daniel" name="eprints.creators_name" />
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<meta content="2007-12-06 22:58:41" name="eprints.datestamp" />
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<meta content="Crown Structure & the Canopy Arthropod Biodiversity of 100 Year Old and Old Growth Tasmanian Eucalyptus obliqua" name="eprints.title" />
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<meta content="The crown structure and canopy arthropods of Eucalyptus obliqua were studied at the Warra Long Term Ecological Research Site in the wet sclerophyll forests of Southern
Tasmania. Eight 100 year old and eight old-growth (between 300-500 years old) trees were studied in pairs. Despite their critical role in the economy and ecology of Tasmania, few studies have addressed the canopy arthropod biodiversity of these trees. The crown structure was mapped by recording a vector in spherical space for every branch. 3- dimensional computer models were generated to aid in illustrating the tree maps. Sticky traps, flight
intercept traps, and funnel crawl traps were placed in the crown to sample mobile arthropods. The age classes were quantifiably different in crown structure. 100 year old trees had young mature crowns of original branches. Old trees had either senescent original crowns or resprouted epicormic secondary crowns. Old trees expressed a greater variability in crown structure, and were more complex as measured by the amount of information required to display the computer image. Structural attributes such as hollows, dead tops, dead flanks, trunk fissures, burls, vascular epiphytes, snapped trunks, and litter collections were all present more often in the old trees than the 100 year old trees. " name="eprints.abstract" />
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<meta content="The crown structure and canopy arthropods of Eucalyptus obliqua were studied at the Warra Long Term Ecological Research Site in the wet sclerophyll forests of Southern
Tasmania. Eight 100 year old and eight old-growth (between 300-500 years old) trees were studied in pairs. Despite their critical role in the economy and ecology of Tasmania, few studies have addressed the canopy arthropod biodiversity of these trees. The crown structure was mapped by recording a vector in spherical space for every branch. 3- dimensional computer models were generated to aid in illustrating the tree maps. Sticky traps, flight
intercept traps, and funnel crawl traps were placed in the crown to sample mobile arthropods. The age classes were quantifiably different in crown structure. 100 year old trees had young mature crowns of original branches. Old trees had either senescent original crowns or resprouted epicormic secondary crowns. Old trees expressed a greater variability in crown structure, and were more complex as measured by the amount of information required to display the computer image. Structural attributes such as hollows, dead tops, dead flanks, trunk fissures, burls, vascular epiphytes, snapped trunks, and litter collections were all present more often in the old trees than the 100 year old trees. " name="DC.description" />
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<h1 class="ep_tm_pagetitle">Crown Structure & the Canopy Arthropod Biodiversity of 100 Year Old and Old Growth Tasmanian Eucalyptus obliqua</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Bar-Ness, Yoav Daniel</span> (2005) <xhtml:em>Crown Structure & the Canopy Arthropod Biodiversity of 100 Year Old and Old Growth Tasmanian Eucalyptus obliqua.</xhtml:em> Research Master thesis, University of Tasmania.</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 onmouseover="EPJS_ShowPreview( event, 'doc_preview_3451' );" href="http://eprints.utas.edu.au/2635/2/01FrontMatterCh3.pdf" onmouseout="EPJS_HidePreview( event, 'doc_preview_3451' );"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a><div class="ep_preview" id="doc_preview_3451"><table><tr><td><img alt="" src="http://eprints.utas.edu.au/2635/thumbnails/2/preview.png" class="ep_preview_image" border="0" /><div class="ep_preview_title">Preview</div></td></tr></table></div></td><td valign="top"><a href="http://eprints.utas.edu.au/2635/2/01FrontMatterCh3.pdf"><span class="ep_document_citation">PDF (Front Matter and Chapters 1-3)</span></a> - Requires a PDF viewer<br />10Mb</td></tr><tr><td valign="top" style="text-align:center"><a onmouseover="EPJS_ShowPreview( event, 'doc_preview_3452' );" href="http://eprints.utas.edu.au/2635/3/02Ch4-Ch6.pdf" onmouseout="EPJS_HidePreview( event, 'doc_preview_3452' );"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a><div class="ep_preview" id="doc_preview_3452"><table><tr><td><img alt="" src="http://eprints.utas.edu.au/2635/thumbnails/3/preview.png" class="ep_preview_image" border="0" /><div class="ep_preview_title">Preview</div></td></tr></table></div></td><td valign="top"><a href="http://eprints.utas.edu.au/2635/3/02Ch4-Ch6.pdf"><span class="ep_document_citation">PDF (Chapters 4-6)</span></a> - Requires a PDF viewer<br />20Mb</td></tr><tr><td valign="top" style="text-align:center"><a onmouseover="EPJS_ShowPreview( event, 'doc_preview_3450' );" href="http://eprints.utas.edu.au/2635/1/03Ch7-Ch9.pdf" onmouseout="EPJS_HidePreview( event, 'doc_preview_3450' );"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a><div class="ep_preview" id="doc_preview_3450"><table><tr><td><img alt="" src="http://eprints.utas.edu.au/2635/thumbnails/1/preview.png" class="ep_preview_image" border="0" /><div class="ep_preview_title">Preview</div></td></tr></table></div></td><td valign="top"><a href="http://eprints.utas.edu.au/2635/1/03Ch7-Ch9.pdf"><span class="ep_document_citation">PDF (Chapters 7-9)</span></a> - Requires a PDF viewer<br />4Mb</td></tr><tr><td valign="top" style="text-align:center"><a onmouseover="EPJS_ShowPreview( event, 'doc_preview_3453' );" href="http://eprints.utas.edu.au/2635/4/04Ch10-13Refs.pdf" onmouseout="EPJS_HidePreview( event, 'doc_preview_3453' );"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a><div class="ep_preview" id="doc_preview_3453"><table><tr><td><img alt="" src="http://eprints.utas.edu.au/2635/thumbnails/4/preview.png" class="ep_preview_image" border="0" /><div class="ep_preview_title">Preview</div></td></tr></table></div></td><td valign="top"><a href="http://eprints.utas.edu.au/2635/4/04Ch10-13Refs.pdf"><span class="ep_document_citation">PDF (Chapters 10-13 and References)</span></a> - Requires a PDF viewer<br />1897Kb</td></tr><tr><td valign="top" style="text-align:center"><a onmouseover="EPJS_ShowPreview( event, 'doc_preview_3454' );" href="http://eprints.utas.edu.au/2635/5/05ChAppendndicesRefs.pdf" onmouseout="EPJS_HidePreview( event, 'doc_preview_3454' );"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a><div class="ep_preview" id="doc_preview_3454"><table><tr><td><img alt="" src="http://eprints.utas.edu.au/2635/thumbnails/5/preview.png" class="ep_preview_image" border="0" /><div class="ep_preview_title">Preview</div></td></tr></table></div></td><td valign="top"><a href="http://eprints.utas.edu.au/2635/5/05ChAppendndicesRefs.pdf"><span class="ep_document_citation">PDF (Appendices)</span></a> - Requires a PDF viewer<br />6Mb</td></tr></table><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The crown structure and canopy arthropods of Eucalyptus obliqua were studied at the Warra Long Term Ecological Research Site in the wet sclerophyll forests of Southern
Tasmania. Eight 100 year old and eight old-growth (between 300-500 years old) trees were studied in pairs. Despite their critical role in the economy and ecology of Tasmania, few studies have addressed the canopy arthropod biodiversity of these trees. The crown structure was mapped by recording a vector in spherical space for every branch. 3- dimensional computer models were generated to aid in illustrating the tree maps. Sticky traps, flight
intercept traps, and funnel crawl traps were placed in the crown to sample mobile arthropods. The age classes were quantifiably different in crown structure. 100 year old trees had young mature crowns of original branches. Old trees had either senescent original crowns or resprouted epicormic secondary crowns. Old trees expressed a greater variability in crown structure, and were more complex as measured by the amount of information required to display the computer image. Structural attributes such as hollows, dead tops, dead flanks, trunk fissures, burls, vascular epiphytes, snapped trunks, and litter collections were all present more often in the old trees than the 100 year old trees. </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">Thesis (Research Master)</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/300800.html">300000 Agricultural, Veterinary and Environmental Sciences > 300800 Environmental Sciences</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2635</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">Eprints Repository Manager</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">07 Dec 2007 09:58</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=2635;">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=2635">item control page</a></p>
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