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bgsu1213042384.pdf (8.67 MB)
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Wet wall algal community response to in-field nutrient manipulation of nitrogen and phosphorus, and the taxonomy, ecology, and distribution patterns of the acidophilic diatom genus
Eunotia
Ehrenberg (Bacillariophyta) of the Great Smoky Mountains Na
Author Info
Furey, Paula Corene
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1213042384
Abstract Details
Year and Degree
2008, Doctor of Philosophy (Ph.D.), Bowling Green State University, Biological Sciences.
Abstract
The basic ecology of wet wall algal assemblages and the ecology, distribution patterns, and taxonomy of the acidophilic diatom genus
Eunotia
Ehrenberg were explored from the Great Smoky Mountains National Park (GSMNP), U.S.A. First, the structural response of wet wall algal assemblages were studied through an in-field experimental manipulation of nutrients (nitrogen and phosphorus) at high and low altitudes. Subaerial algal assemblages are understudied communities and the factors that drive community dynamics in these environments are poorly understood. Algal assemblages were not as nitrogen or phosphorus limited as initially anticipated. Although not directly tested in this study, results suggested that other factors, such as ultraviolet radiation, pH, moisture levels, or microhabitat differences, are influential in shaping wet wall, algal community structure. Second, diatoms from high elevation springs and headwater streams were examined and found to be dominated by a couple of
Eunotia
taxa, including a new species,
E. macroglossa
sp. nov. The presence of morphological deformities at some of the spring sites was documented with both light and scanning electron microscopy and the malformations suggest that acid precipitation may directly be harming the aquatic ecosystems in the park. Third, the distribution patterns of
Eunotia
species from sites throughout the park were explored in relation to environmental factors such as elevation, pH, geology, and water chemistry. As expected higher altitude streams generally had lower pH levels and a greater relative abundance of
Eunotia
relative to other diatom genera, especially species in the
E. exigua
complex. The results highlighted how vulnerable high elevation areas in the GSMNP may be to acid precipitation. Finally, an image rich documentation and inventory of the
Eunotia
taxa in the GSMNP was provided, including species descriptions, morphological measurements and a discussion of taxonomic challenges. The
Eunotia
were very diverse with over 65 subgeneric taxa being documented, many of which were new park records, new records for North American and/or were undescribed species. This dissertation explored a new algal frontier (wet walls) and provided further taxonomic documentation and ecological description of an understudied group of diatoms, the genus
Eunotia
.
Committee
Dr. Rex Lowe (Advisor)
Dr. Alexander Izzo (Other)
Dr. Jeffrey Johansen (Committee Member)
Dr. Karen Root (Committee Member)
Dr. Dan Wiegmann (Committee Member)
Pages
250 p.
Subject Headings
Biology
Keywords
EUNOTIA
;
GSMNP
;
Lange-Bertalot
;
GSMNP SP
;
DIATOM
;
striae
Recommended Citations
Refworks
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RIS
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Citations
Furey, P. C. (2008).
Wet wall algal community response to in-field nutrient manipulation of nitrogen and phosphorus, and the taxonomy, ecology, and distribution patterns of the acidophilic diatom genus
Eunotia
Ehrenberg (Bacillariophyta) of the Great Smoky Mountains Na
[Doctoral dissertation, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1213042384
APA Style (7th edition)
Furey, Paula.
Wet wall algal community response to in-field nutrient manipulation of nitrogen and phosphorus, and the taxonomy, ecology, and distribution patterns of the acidophilic diatom genus
Eunotia
Ehrenberg (Bacillariophyta) of the Great Smoky Mountains Na.
2008. Bowling Green State University, Doctoral dissertation.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1213042384.
MLA Style (8th edition)
Furey, Paula. "Wet wall algal community response to in-field nutrient manipulation of nitrogen and phosphorus, and the taxonomy, ecology, and distribution patterns of the acidophilic diatom genus
Eunotia
Ehrenberg (Bacillariophyta) of the Great Smoky Mountains Na." Doctoral dissertation, Bowling Green State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1213042384
Chicago Manual of Style (17th edition)
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Document number:
bgsu1213042384
Download Count:
1,414
Copyright Info
© 2008, all rights reserved.
This open access ETD is published by Bowling Green State University and OhioLINK.