• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 138
  • 119
  • 7
  • 4
  • 3
  • 3
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 302
  • 302
  • 130
  • 111
  • 38
  • 31
  • 31
  • 30
  • 29
  • 29
  • 29
  • 28
  • 27
  • 27
  • 26
  • 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.
71

The effect of land degradation on fertility in West Africa : disaggregating the demographic response

Sasson, Isaac 16 February 2011 (has links)
Demographic responses to environmental stress have long been hypothesized in classic population theory, though empirical analyses remain scarce and traditionally focus on aggregate units of analysis. With the growing concern over environmental degradation it remains an empirical question as to how, to what extent and in which spatial and temporal scales populations, especially in developing countries, are directly and indirectly affected by their immediate natural surroundings. This paper examines the link between fertility related behavior of women at the individual level and several environmental determinants across eight sub-Saharan West African countries. Data is pooled from georeferenced Demographic and Health Surveys (conducted 2001-2005) combined with long term climatic data and a time series of remotely sensed vegetation index spanning 23 years. Results consistently show little to no effect of immediate natural resources or gross land degradation on fertility related behavior, but that effects tend to become more pronounced in larger geographic scales. Despite data limitations these results call for improved theoretical specificity. Questions that need to be addressed, both theoretically and empirically, are at which spatial and temporal scales environmental pressures induce certain types of demographic responses. / text
72

Sustainable coastal management and the Admiralty Reserve in Umdoni Municipality : towards an understanding of the Admiralty Reserve encroachments.

Duma, David Makhosonke. January 2005 (has links)
The dissertation's point of departure and contention is that the Admiralty Reserve is one of the Coastal Resources facing degradation due to the fact that it is a common property owned by the State President on behalf of all citizens of South Africa. The environmental management function has become the unfunded mandate of local authorities therefore the administration, control and management of the Admiralty Reserve is the responsibility of local government in terms of various lease agreements. There are currently no specific tools available to local government to manage the Admiralty Reserve. The encroachment of the Admiralty Reserve has been and still is a problem for all coastal municipalities including Umdoni municipality. The rationale for the topic was to study the geography of the Admiralty Reserve, the causes of encroachments and the way in which the local authorities dealt (past and present) with the Admiralty Reserve encroachments; to assess the strategies employed by the municipalities in dealing with encroachments, and with the traditional and evolving functions of the Admiralty Reserve. This was done using standard research methods and techniques. The study is located in one of the small coastal municipalities of South Africa called Umdoni, in the Province of Kwazulu-Natal. The results of the study show that the past and present strategies of dealing with encroachments were adversarial in stance and not collaborative. The failure to administer and manage efficiently can be attributed to the following reasons: lack of capacity to deal with environmental matters and legislation, lack of political willpower, negligence on the part of both national and local government spheres, lack of stewardship, lack of proper education, training and knowledge of environmental issues and negative attitudes towards environmental matters. It was also revealed that generally people encroach into the Reserve because of greed and selfishness. One of the conclusions drawn from the findings was that the Admiralty Reserve has become a victim of fragmented control and management by various spheres of government. The Admiralty Reserve requires an integrated management approach that incorporates civic organizations, the relevant government departments, the local authority and the interested and affected individuals. Local authorities are not given proper tools to manage the Admiralty Reserve. There are many laws but none of them are relevant to the Admiralty Reserve. In the absence of usable legislative tools relevant to the Admiralty Reserve encroachments, it is highly recommended and imperative that coastal local authorities (particularly Umdoni Municipality) should formulate and strengthen their bylaws. / Thesis (M.Soc.Sc)-University of KwaZulu-Natal, Durban, 2005.
73

Government Decision-Making and Environmental Degradation: A Study relating to Mining Activities in Papua New Guinea

frcarr@bigpond.com, Frank Carr January 2007 (has links)
Papua New Guinea (PNG) is a country possessing abundant resources of gold, oil, copper, timber, and fish stocks. It is hampered in its development and management of these resources, however, by serious problems of governance and corruption. These problems are evident throughout the economy and also in the management of the environment. The level of environmental damage caused by the mining industry in PNG is now such that it will require extensive rehabilitation, if the areas affected can, indeed, ever be fully rehabilitated. The mining companies which precipitated this damage were licensed and encouraged by the PNG Government in the initiation and exercise of the mining operations. The resulting environmental impact has affected the lives of thousands of New Guineans to their detriment. The degradation caused remains unredressed. Compounding the problem, there is a growing reliance by Papua New Guinea on mineral exploitation for foreign direct investment, government revenues, and foreign exchange. Gold exports accounted for the biggest share of export revenues in 2002 representing 37.5% of the total. In light of this growing dependency on mining activities, there is a correspondingly urgent requirement to address the deficiencies in the administrative, monitoring, and policing aspects of the protection of its environment. Despite the public evidence of the damage to the environment and the ensuing affect on the people of Papua New Guinea by mining activities; and despite universal condemnation of these activities and the companies responsible; the companies continue to conduct these activities without official hindrance and with little apparent concern for the long-term ramifications of their actions. This thesis will examine the degradation resulting from the mining activities of companies in Papua New Guinea over the last three decades – particularly those of Placer Dome’s Porgera gold mine, BHP’s Ok Tedi gold and copper mine (the waste from both of which is dumped into the Ok Tedi and Strickland rivers which are tributaries of the Fly River and form part of the Fly River system) and Lihir Gold Limited's gold mine on Lihir Island. It will examine the extent to which the Government of Papua New Guinea may have wittingly (in the sense of a prescience as to the possible or probable likelihood of deleterious impact) or unwittingly contributed to that degradation as a result of its actions or omissions. Studies of available literature suggest that there has been little attention paid to the subject of culpability on the part of successive PNG governments in matters of environmental damage. This research will contribute to reducing this gap in the literature by focusing on possible motives of the PNG government and its actors which precipitated those decisions and which resulted in environmental degradation. The discussion will examine the likely motivation of the PNG government in its deliberations and decisions and the extent to which corruption and incompetence may have played a role.
74

Effects of land use changes on soil quality and native flora degradation and restoration in the highlands of Ethiopia : implications for sustainable land management /

Mulugeta Lemenih, January 2004 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv., 2004. / Härtill 5 uppsatser.
75

The sustainability of Swedish agriculture in a coevolutionary perspective /

Saifi, Basim. January 2004 (has links) (PDF)
Diss. Uppsala : Sveriges lantbruksuniversitet, 2004.
76

Effects of man on the vegetation in the national parks of South Australia /

Mattiske, Elizabeth M. January 1975 (has links) (PDF)
Thesis (Ph. D.)--Dept. of Botany, University of Adelaide 1976. / Volume 2 consists almost entirely of maps. Includes index of plant species. Includes bibliographical references (p. 227-242 (v. 1)).
77

Development and degradation : intensive shrimp culture and ecological rebuke in southern Thailand /

Gronski, Robert T. January 1997 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 1997. / Typescript. Vita. Includes bibliographical references (leaves 308-326). Also available on the Internet.
78

Development and degradation intensive shrimp culture and ecological rebuke in southern Thailand /

Gronski, Robert T. January 1997 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 1997. / Typescript. Vita. Includes bibliographical references (leaves 308-326). Also available on the Internet.
79

Society and environment eroded a study of household poverty and natural resource use in two Tanzanian villages /

Lindberg, Clas. January 1996 (has links)
Thesis (doctoral)--Uppsala University, 1996. / Includes bibliographical references (p. [160]-164).
80

Society and environment eroded a study of household poverty and natural resource use in two Tanzanian villages /

Lindberg, Clas. January 1996 (has links)
Thesis (doctoral)--Uppsala University, 1996. / Includes bibliographical references (p. [160]-164).

Page generated in 0.4118 seconds