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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.
261

Plant and ant communities in the northern Everglades

Unknown Date (has links)
I examined the impact of the exotic, invasive plant Old World climbing fern, Lygodium microphyllum (Cav.) R. Brown, on tree island plant and ant communities in the northern Everglades. I selected 15 tree islands representing four groups: non-Lygodium islands, islands with low levels of Lygodium, islands with high levels of Lygodium, and disturbed islands impacted by people. I used a variety of diversity indices to compare plant and ant data among habitats. The ant communities studied included native and exotic species typical of south Florida. Tree island plant communities were consistent with descriptions from previous studies. Plant species richness decreased with the level of L. microphyllum in the ground and midstory layers. Abundance of native plants decreased with level of L. microphyllum in the ground, midstory, and overstory layers. Lygodium microphyllum did not affect ant communities suggesting that although it negatively impacts plant communities it can provide habitat for ants. / by Camille Darby Carroll. / Thesis (M.S.)--Florida Atlantic University, 2009. / Includes bibliography. / Electronic reproduction. Boca Raton, Fla., 2009. Mode of access: World Wide Web.
262

Application of a framework to assess wildlife policy and its implementation in Mocambique.

Soto, Bartolomeu. January 2004 (has links)
Wildlife management in Moryambique has had a troubled history. The end of civil war and installment of a democratic Government provided opportunity to redefine policy and implementation of conservation. Weakened by civil strife and with wildlife decimated in many areas, Government sought approaches to conservation that would promote participation by investors and civil society, particularly rural communities. The intention is to acknowledge the rights of rural people to resources and the benefits that can accrue from their use. Partnerships are seen as a way in which Government can bring the required financial and human resources to bear whilst at the same time engendering positive attitudes to conservation in general, and to policy in particular. The purpose of this research is to examine, using two case study conservation areas, the consequences of Government's attempts to implement its policy. The philosophical basis for the research is that policy reform and implementation should be envisaged as a complex system comprising many interactions and that when this complexity is not acknowledged and addressed systemically, it predisposes the process of policy reform and implementation to failure. A principal cause of failure is considered to be that assumptions are not made explicit and this results in development and application of an approach that does not accord with reality. Further, because of the networked nature of the system, failure at one point can be magnified as its consequences are propagated through the system. A conceptual framework for policy reform and implementation is developed. This exposes some critical assumptions about Government's capacity to implement policy and the ways in which implementation is experienced by stakeholders, especially local communities. Context is provided by tracing the evolution of approaches to conservation in Moryambique from the pre-colonial era to the present. The findings are that Government does not have the capacity to implement its conservation policy and this is shown to have serious implications for how local people perceive and respond to Government approaches to conservation. Causal factors are analysed and assessed. It is concluded that the process of policy reform and implementation is complex but that a systems approach provides a simple and easily comprehended way in which this complexity can be interpreted and taken into account with potentially very significant benefits. Perceptions are shown to be a powerful determinant of response to policy reform and implementation. As these are commonly a basis for destructive tensions between parties, it is suggested that research directed at defining the principles that should underpin management of perceptions and tensions should be encouraged. / Thesis (M.Env.Dev.)-University of KwaZulu-Natal, Pietermaritzburg, 2004.
263

A biodiversity conservation policy and legal framework for Hong Kong /

Felley, Mary Louise. January 1996 (has links)
Thesis (M. Sc.)--University of Hong Kong, 1996. / Includes bibliographical references (leaf 82-90).
264

Memorable Messages and Wildlife Conservation

January 2016 (has links)
abstract: Wildlife endangerment and extinction is a significant and pressing issue. Environmental research notes that if humans hope to preserve wildlife, change needs to occur within the next decade. Therefore, it is important to understand the kinds of messages young adults are receiving about wildlife. This communication may affect their attitudes, beliefs, and ideals toward nature. Communication and socialization remain significant factors in cultivating environmental values in individuals. Memorable messages remain a socialization tool utilized to promote values in others. This study explores the kinds of wildlife messages and underlying values individuals receive by asking them to recall a memorable wildlife message. The study analyzed 108 memorable messages from individuals between the ages of 18-35. The study employs a content analysis to examine message content and values. The study employed sensitizing concepts, such as Stern's Value-Belief-Norm theory to examine the messages’ underlying values, such as altruism and progressivism. Results indicate messages revolve around themes of preservation, stewardship, sanctity, domestication, and complexity of conservation. Of the 108 messages, 66 messages conveyed altruistic and progressive values as defined by Stern while other messages conveyed appreciation, awareness, and dominative values. Additionally, wildlife messages were received mostly through mediated sources. Implications for parents, the media, and wildlife are explored. / Dissertation/Thesis / Masters Thesis Communication Studies 2016
265

The Influence of Population Structure on Genetic Variation in Captive Bred Species

Jones, Andrew Treymane January 2014 (has links)
No description available.
266

The Role of Wildlife Value Orientations in Framing Interactions with Wildlife Near the Home: A Mixed-methods Analysis of Self-reported Problems with Wildlife

Hartel, Colleen M. 12 October 2018 (has links)
No description available.
267

Limitations on macroinvertebrate populations in South Florida weltands

Unknown Date (has links)
It can be difficult to disentangle the factors that determine population success in freshwater systems, particularly for organisms with disturbance-resistant life stages like aquatic invertebrates. Nevertheless, the effects of environmental variation and habitat structure on animal population success in wetlands are important for understanding both trophic interactions and biodiversity. I performed two experiments to determine the factors limiting crayfish (Procambarus fallax) and dragonfly (Family: Libellulidae) populations in wetland environments. A simulation of a dry-disturbance and subsequent sunfish (Family: Centrarchidae) re-colonization revealed that crayfish populations are sensitive to sunfish, while dragonfly naiads seemed to be limited by other drying-related factors. A second manipulation revealed that small-bodied fishes and habitat structure (submerged vegetation) shaped dragonfly communities primarily through postcolonization processes. / by Natalie Knorp. / Thesis (M.S.)--Florida Atlantic University, 2013. / Includes bibliography. / Mode of access: World Wide Web. / System requirements: Adobe Reader.
268

Fire ants on sea turtle nesting beaches in South Florida, USA, and ST. Croix, USVI

Unknown Date (has links)
The red imported fire ant, Solenopsis invicta, is a South American native introduced in Alabama in the early 20th century. This predatory species has rapidly spread throughout the southeastern US and parts of the West Indies, inflicting great ecological and economic damage. For example, Solenopsis invicta is known to attack the eggs and hatchlings of ground nesting birds and reptiles. The ants swarm into the nests attacking hatchlings and diminishing their chance for survival. My thesis research aimed to survey the distribution of ants on sea turtle nesting beaches in South Florida and St. Croix, USVI, and to evaluate the possible threat of Solenopsis invicta and other predatory ants to sea turtle hatchlings. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2013.
269

Indigenous resource taboos : a practical approach towards the conservation of commercialized species

Monson, Clark S January 2004 (has links)
Thesis (Ph. D.)--University of Hawaii at Manoa, 2004. / Includes bibliographical references (leaves 134-149). / Also available by subscription via World Wide Web / vi, 149 leaves, bound ill. (some col.), col. map 29 cm
270

Wildlife all around us: A second grade guide to city wildlife education

Pendegraft, Melanie Anne 01 January 2006 (has links)
This thesis provides opportunities for second grade students to explore, study, and apply critical thinking skills in reference to the local wildlife and current environmental issues.

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