HR: 1330h
AN: NB33A-14    [Abstracts]
TI: Investigations of the Diatom Genus Chamaepinnularia in the Great Smoky Mountains National Park
AU: * Ress, J A
EM: jar569@hotmail.com
AF: Bowling Green State University, Department of Biological Sciences, Bowling Green, OH 43402 United States
AU: Lowe, R L
EM: lowe@bgnet.bgsu.edu
AF: Bowling Green State University, Department of Biological Sciences, Bowling Green, OH 43402 United States
AU: Johansen, J R
EM: johansen@jcu.edu
AF: John Carroll University, Department of Biology, Cleveland, OH 44118 United States
AB: The Great Smoky Mountains National Park, which lies across the Tennessee-North Carolina boarder in the USA, is a region of high species diversity that has become the focus of intense study. The All Taxa Biodiversity Inventory (ATBI) was initiated in order to discover and catalogue all species present within this ecosystem. As part of this project we have been working to catalogue the algal flora of the park. Many new park species records have been identified as well as many species new to science. Here we focus on one genus of diatoms new to the park, Chamaepinnularia. The genus Chamaepinnularia was erected by Lange-Bertalot and Krammer in Iconographia Diatomologica: Indicators of oligotrophy - 800 taxa representative of three ecologically distinct lake types in 1996. Chamaepinnularia includes a number of species previously included in the genus Navicula. Approximately 21 species have been described to date. Species within this genus are small, typically not more than 25um long and 4um broad. The valve margins are usually linear, but occasionally they may be undulate. Many species are aerophilic and are commonly found in splash zones and other moist habitats. Three species of Chamaepinnularia have been found on wet drip walls within the Great Smoky Mountains National Park. These species include Chamaepinnularia mediocis (Krasske) Lange-Bertalot, and two other undescribed species. These new species resemble the previously described Chamaepinnularia amphiborealis Lange-Bertalot and Werum and Chamaepinnularia vyvermanii Lange-Bertalot and Krammer.
DE: 9810 New fields (not classifiable under other headings)
SC: North American Benthological Society [NB]
MN: 2005 Joint Assembly