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Spatial and temporal patterns of Lycium carolinianum Walt., the Carolina Wolfberry, in the salt marshes of Aransas National Wildlife Refuge, TexasButzler, Rachel Elizabeth 16 August 2006 (has links)
Understanding the salt marsh ecosystem in the Guadalupe Estuary is needed
because wetlands in this system support the endangered whooping crane (Grus
americana). The marsh plant research and monitoring described herein were based in
the salt marshes at Aransas National Wildlife Refuge (ANWR), which are utilized by the
cranes each winter. Past research indicates that the Carolina wolfberry (Lycium
carolinianum) contributes 21-52% of crane energy intake early in the wintering period
(Chavez 1996). Beginning in Fall 2003, vegetation transects were sampled along an
estuarine gradient at ANWR. Species diversity and composition was similar at the three
sites, with all sites containing the same 6-7 common species. While Spartina
alterniflora is only a minor part of this vegetation community, it dominates the few low
inter-tidal, fringe areas present. Species composition exhibited little variability from
Year 1 to Year 2 of the study. Densities and biomass of L. carolinianum were not
significantly different between sites or years. L. carolinianum, while important to salt
marsh ecology, accounts for only a small portion of the overall productivity. Based on
correlation coefficients, L. carolinianum was found in association with some of the common species in the vegetation community, indicating that its growth and survival
requirements are typical to the salt marshes at ANWR. Also beginning in Fall 2003, I
repeatedly sampled L. carolinianum in permanent plots along the estuarine gradient. L.
carolinianum exhibits strong temporal patterns. Leaf production peaked in early spring
and again just prior to peak berry abundance. Flowering of L. carolinianum occurred in
October and November. Peak berry abundance coincided with the cranes arrival in late
October and early November. Berry production occurred in October, November, and
December; berries were virtually non-existent in the marshes for the remainder of the
year. Stepwise regression showed stem diameter alone was a good estimator of
aboveground biomass of this species in ANWR marshes, accounting for 94% of the
variability (p<0.001). Changes in aboveground biomass followed no distinct patterns in
the year of monitoring, perhaps due to the woody stem of the plant. Spatial patterns in
L. carolinianum were not explained by water quality parameters alone; it is suggested
that soil properties may help to account for the spatial variability.
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Signaling, intersexual dynamics and the adoption of alternative male mating behaviors in green treefrogs, Hyla cinerea /Humfeld, Sarah Conditt, January 2003 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2003. / Typescript. Vita. Includes bibliographical references (leaves 221-235). Also available on the Internet.
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Signaling, intersexual dynamics and the adoption of alternative male mating behaviors in green treefrogs, Hyla cinereaHumfeld, Sarah Conditt, January 2003 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2003. / Typescript. Vita. Includes bibliographical references (leaves 221-235). Also available on the Internet.
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Estimating the economic value of Canaan Valley National Wildlife Refuge a contingent valuation approach /Klocek, Christopher A. January 2004 (has links)
Thesis (Ph. D.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains vii, 125 p. : ill., map. Includes abstract. Includes bibliographical references (p. 90-96).
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A hydrologic analysis and model of a watershed, containing an ecologically important wetland, in Canaan Valley State Park, West VirginiaLamont, Sam. January 2003 (has links)
Thesis (M.S.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains vii, 73 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references (p. 71-73).
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Relations between the distribution of Canada geese and the quantity and quality of forage at W. L. Finley National Wildlife Refuge, 1984-1987Naughton, Maura 12 June 1992 (has links)
Graduation date: 1993
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Loggerhead sea turtle (Caretta caretta) nesting on a Georgia barrier island effects of nest relocation /Tuttle, Jacob A. January 2007 (has links) (PDF)
Thesis (M.S.)--Georgia Southern University, 2007. / Title from PDF title page (viewed on Feb. 19, 2008). Electronic version approved: December 2007. Includes bibliographical references (p. 35-37).
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The ANWR landscape : a geographical analysis of rhetoric and representation /Moyer, Jessica Renee. January 2008 (has links)
Thesis (M.S.)--Western Washington University, 2008. / Includes bibliographical references (leaves 112-121). Also issued online.
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Bioassessment of irrigation drainwater effects on aquatic resources in the Klamath Basin of California and Oregon /Bennett, Jewel Kay. January 1994 (has links)
Thesis (Ph. D.)--University of Washington, 1994. / Vita. Includes bibliographical references (leaves [134]-156).
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Hydrological processes inferred from water table fluctuations, Walnut Creek, IowaSchilling, Keith Edwin. Zhang, You-Kuan. January 2009 (has links)
Thesis supervisor: You-Kuan Zhang. Includes bibliographic references (p. 158-172).
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