Landscape Ecology - Eric B. Peterson <link rel="stylesheet" href="../styles.css" /> </head> <body> <table width="98%"> <tr> <td class="TitleSide"></td> <td class="TitleMain"> <br /> <p class="title">Landscape Ecology - Eric B. Peterson</p> <br /> </td> </tr> <tr> <td class="MainSide"></td> <td class="MainMain"> <p class="PageDescription"><u>Abstract of oral or poster presentation:</u></p> <p class="AbstractTitle">Rare Lichens in the Klamath Region: Why have we not found endemics?</p> <p class="AbstractAuthor">Peterson, Eric B. Oregon State University, Department of Botany and Plant Pathology, Corvallis, OR 97331-2902.</p> <p class="AbstractText">The Klamath region is known for diverse topography and geology, and a very long floristic history. The many endemic vascular plants of the region reflect these unusual qualities. Given the variety of terrestrial and epiphytic habitats, a diverse lichen flora could be expected. Epilithic and terricolous lichens are often influenced by substrate chemistry. The peculiar chemistry of ultramafic substrates could support unusual lichen communities. Although several rare lichens are known from the region, they are also known from elsewhere. No endemic lichen taxa have been found. Ultramafic substrates in other areas are known to support lichen communities with relatively low species richness. Ultramafic rock contains high concentrations of metals which may be toxic to many lichens, and could prevent taxa from evolving specialization to these substrates. Also, even rare lichens often have broad distributions. Umbilicaria phaea var. coccinea, a taxon that may warrant species-level status, is the closest known taxon to being a Klamath region endemic, with a large population in the Shasta River area of Siskiyou County, California, and small disjunct populations in central Oregon and central Washington. However, the lichen flora of the Klamath region is poorly known; lichens endemic to the region may exist, but have not yet been found.</p> <p class="AbstractMeeting">Presented at the 1997 <a href="http://darkwing.uoregon.edu/~bartj/siskiyous/">Conference on Siskiyou Ecology</a></p> <br /> <font size="-1"><a href="http://www.landscapeecology.com">HOME</a> : <a href="http://www.landscapeecology.com/Info/">Info</a></font> <br /> <br /> </td> </tr> </table> <hr width="97%" /> <font="-1"><a href="http://www.landscapeecology.com">LandscapeEcology.com</a> - contact the webmaster, Eric Peterson, <a href="http://non-parametric.com/contact.php?return=http://www.landscapeecology.com">here</a>. </body> </html>