• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 148
  • 33
  • 7
  • 7
  • 7
  • 6
  • 5
  • Tagged with
  • 232
  • 232
  • 48
  • 41
  • 38
  • 31
  • 29
  • 28
  • 28
  • 27
  • 27
  • 24
  • 22
  • 22
  • 17
  • 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.
11

The mitochondrial genome of the eastern oyster, Crassostrea virginica the complete DNA sequence and its application in local restoration efforts /

Milbury, Coren A. January 2007 (has links)
Thesis (Ph.D.)--University of Delaware, 2007. / Principal faculty advisor: Patrick M. Gaffney, School of Marine and Earth Studies. Includes bibliographical references.
12

The effects of native plants on non-native plant abundance in a restoration setting : differences among native species and the predictive ability of species traits

Goodridge, Jennifer M. 05 September 2001 (has links)
Reducing the cover of non-native species is one of the challenges of ecosystem restoration. The goal of this study is to identify native species traits that will increase native species cover and reduce non-native species cover in the first growing season at upland and wetland prairie restoration sites. Native and non-native prairie species were planted in the fall and harvested the following summer at both an upland and a wetland site. Native species traits, such as plant weight, leaf area, relative growth rate, leaf area ratio, leaf weight ratio, net assimilation rate, and specific leaf area were measured under laboratory conditions for 7- and 21-day old seedlings. Germination rate (laboratory) and phenology (field) were also measured. At the upland site, species with a large 7-day plant weight and a high germination rate also had high native cover in the field (P<0.00l, R��=0.83). At the wetland site, high 21-day leaf area, low 21-day leaf weight ratio, and high net assimilation rate predicted increased native cover in the field (P<0.00l, R��=0.87). An abundance of natives, as measured by native cover, native biomass, and number of individuals, likely results in fewer resources (light, nutrients, and water) available for the non-native species growth resulting in a reduction in the non-native cover. Intrinsic traits of native species also predicted the field performance of non-native species, although the amount of variation explained was lower than the amount of variation explained in the models that predicted native cover. In the upland site, native species with high leaf weight ratio (21-day) tended to have lower non-native cover in their field plots (P=0.087, R��=0.23). In the wetland site, the native species traits that predict non-native cover were low 21-day leaf area and high 21-day leaf weight ratio (P<0.00l, R��=0.46). These traits were similar to those that predicted native species cover at the wetland site. This study demonstrates the ability of species traits to predict field performance. Predictive models were generated using native species traits to select species for restoration that will increase native cover and decrease non-native cover in the first growing season. Traits can be measured for species not included in this study and the models generated can be used to predict the field performance of species at similar sites. / Graduation date: 2002
13

Economic-ecological relationships in coastal wetland restoration /

Magnusson, Gisele Marie. January 2006 (has links)
Thesis (Ph. D.)--University of Rhode Island, 2006. / Typescript. Includes bibliographical references (leaves 178-197).
14

Arthropod and plant communities as indicators of land rehabilitation effectiveness in a semi-arid shrub-steppe /

Gardner, Eric Ty. January 2008 (has links) (PDF)
Thesis (M.S.)--Brigham Young University. Dept. of Plant and Wildlife Sciences, 2008. / Includes bibliographical references (p. 20-22).
15

Bioindicators of desorbed contaminants following resuspension of Penobscot River sediments /

Miniutti, Danielle M., January 2007 (has links) (PDF)
Thesis (M.S.) in Biochemistry--University of Maine, 2007. / Includes vita. Includes bibliographical references (leaves 66-75).
16

Mimicking fire for post-mining restoration success at Rocky Canyon quarry: a thesis /

Wilkin, Marie Katherine. Keil, David J. January 1900 (has links)
Thesis (M.S.)--California Polytechnic State University, 2009. / Title from PDF title page; viewed on October 23, 2009. Major professor: Dr. David Keil. "Presented to the faculty of California Polytechnic State University, San Luis Obispo." "In partial fulfillment of the requirements for the degree [of] Master of Science in Biological Sciences." "September 2009." Includes bibliographical references (p. 200-209). Also available on microfiche.
17

Sustainable restoration of mine sites : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Lincoln University /

Krisnayanti, Baiq Dewi. January 2009 (has links)
Thesis (Ph. D.) -- Lincoln University, 2009. / Also available via the World Wide Web.
18

The ecology of riparian ecosystems of Northeast Oregon : shrub recovery at Meadow Creek and the structure and biomass of headwater Upper Grande Ronde ecosystems /

Case, Richard L. January 1995 (has links)
Thesis (M.S.)--Oregon State University, 1996. / Typescript (photocopy). Includes bibliographical references (leaves 122-137). Also available on the World Wide Web.
19

Assessment of four years of marsh restoration at the Jones Farm Experimental Restoration Facility in northeast Ohio water quality, plant community development, and adaptive management /

Grossman, Jake J. January 1900 (has links)
Honors Thesis (Biology)--Oberlin College, 2008. / "Spring 2008." Includes bibliographical references (leaves 42-50).
20

The transition zone impact of riverbanks on emergent dragonfly nymphs. Implications for riverbank restoration and management /

Martin, Kirsten Hope. January 2010 (has links)
Thesis (Ph.D.)--Antioch University New England, 2010. / Title from PDF t.p. (viewed July 22, 2010). "A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy Environmental Studies at Antioch University New England (2010)."--from the title page. Advisor: James Jordan, Ph.D. Includes bibliographical references (p. 97-104).

Page generated in 0.1378 seconds