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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Phragmites australis in a freshwater coastal wetland : implications for carbon dynamics /

Rothman, Erin K., January 2005 (has links)
Thesis (M.S.)--Ohio State University, 2005. / Includes bibliographical references (leaves 38-42). Available online via OhioLINK's ETD Center
42

Targeting conservation activities : cost-effective wetlands restoration in the Central Valley of California /

Newbold, Stephen Carlisle. January 2002 (has links)
Thesis (Ph. D.)--University of California, Davis, 2002. / Degree granted in Ecology. Includes bibliographical references (leaves189-199). Also available via the World Wide Web. (Restricted to UC campuses)
43

Mapping vegetation density and water inundation in a recovering wetland : the Mesopotamian Marshlands /

Bosley, Jon Michael. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2007. / Printout. Includes bibliographical references (leaves 71-75). Also available on the World Wide Web.
44

Ecology, distribution, and control of purple loosestrife (Lythrum salicaria) in northwest Ohio /

Balogh, Gregory Robert, January 1986 (has links)
Thesis (M.S.)--Ohio State University, 1986. / Includes bibliographical references (leaves 102-106). Available online via OhioLINK's ETD Center
45

Hydroperiod of Wetlands and Reproduction in Wood Frogs (Rana sylvatica) and Spotted Salamanders (Ambystoma maculatum)

Kolozsvary, Mary Beth January 2003 (has links) (PDF)
No description available.
46

Effects of control of the invasive plant, Phragmites australis, on microbes and invertebrates in detritus

Kennedy, Emmalisa. January 2008 (has links)
Thesis (M.S.)--Kent State University, 2008. / Title from PDF t.p. (viewed Oct. 27, 2009). Advisor: Laura Leff. Keywords: Phragmites australis; Scirpus cyperinus; glyphosate; microbes; ergosterol; invertebrates. Includes bibliographical references (p. 47-59).
47

Community management of wetland ecology and socio-economic costs of wetland degradation in mudaswali Wetland, Limpopo Province, South Africa

Sinyati, Mollel 09 1900 (has links)
See the attached abstract below
48

Primary productivity, sedimentation, and phosphorous cycling in a Lake Erie coastal wetland /

Reeder, Brian Charles January 1990 (has links)
No description available.
49

Protozoan communities, macrophyte vegetation and trophic status of northern Michigan wetland lakes

Henebry, Michael S. January 1981 (has links)
Freshwater wetland lakes have long been ignored by biologists and limnologists. This was the first study to simultaneously sample protozoan communities, macrophyte vegetation, water chemistry and nutrient status, and primary productivity of the phytoplankton in each of the four major types of wetlands -- bogs, fens, marshes, and swamps. The following hypotheses were supported by data from this study: 1) that differences in plant communities, as measured by a coefficient of similarity, would be greater than differences in protozoan communities from the four different types of wetlands; 2) that common measures of trophic status -- primary productivity, chlorophyll a, and phosphorus and nitrogen nutrients -- would show that bog lakes were eutrophic; and 3) that there would be a positive correlation between the rate of colonization of polyurethane foam unit (PFU) artificial substrates by Protozoa and the trophic status of the wetland lakes. Other evidence of highly eutrophic conditions in the bogs studied were the high ratios of autotrophic to heterotrophic protozoa in the PFU samples, and the general appearance of some bog sites -- like that of·thick green soup. One bog was oligotrophic as indicated by the very slow rate of colonization of the PFUs placed in it. It was concluded that low pH, brown water bog lakes can span the full range from oligotrophy to eutrophy, and that bog lakes should probably not be labeled dystrophic, since that term implies an extreme degree of oligotrophy. / Ph. D.
50

Selection of canals and ditches as foraging habitat by wood s7374torks (Mycteria americana)

Unknown Date (has links)
A challenge to ensure the health of wading bird populations is to have a better understanding of the altered habitats that we must now consider part of their natural history. Throughout their range endangered Wood Storks (Mycteria americana) have been reported to forage in ditches, a disparate category of linear man-made waterways. In a 52-kmP 2 P study area on the east coast of central Florida, the characteristics of hydrologically diverse ditches were quantified, and their use by Wood Storks documented during their non-breeding season. Logistic regression analyses were carried out using the ditch characteristics as independent variables and Wood Stork presence/absence as the dependent variable. This study confirms the use of these marginal wetlands, and identifies the significance of emergent vegetation on the foraging habitat selection of Wood Storks in the dry season. / by Eleanor K. Van Os. / Thesis (M.S.)--Florida Atlantic University, 2008. / Includes bibliography. / Electronic reproduction. Boca Raton, Fla., 2008. Mode of access: World Wide Web.

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