Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 41 for “"Over-exploitation"”.
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The international convention for the control and management of ships' ballast water and sediments 2004: a critical appraisal
Oceans cover more than 70 per cent of the earth's surface, and over 60 per cent of human population resides along the coast. A significant proportion of human protein supply comes from the sea, while the majority of global biodiversity and over 97 per cent of the biosphere is marine and is unknown. …
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The international convention for the control and management of ships' ballast water and sediments 2004: a critical appraisal
Oceans cover more than 70 per cent of the earth's surface, and over 60 per cent of human population resides along the coast. A significant proportion of human protein supply comes from the sea, while the majority of global biodiversity and over 97 per cent of the biosphere is marine and is unknown. …
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The international convention for the control and management of ships' ballast water and sediments 2004: a critical appraisal
Oceans cover more than 70 per cent of the earth's surface, and over 60 per cent of human population resides along the coast. A significant proportion of human protein supply comes from the sea, while the majority of global biodiversity and over 97 per cent of the biosphere is marine and is unknown. …
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An Investigation into the Domestic and International of Wildlife for Meat and Medicine in Southeast Asia
… the region’s mega rich biodiversity, propelling over-exploitation and illicit trade. This makes it a crucial field of study. In this critical appraisal, I present my research on a leading driver of species decline – the trading of species for meat and medicine predominantly in the Southeast Asian …
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Maritime resource exploitation in southwest Australia prior to 1901
… southwest Australia which were subject to human exploitation prior to 1901 and provides an overview of how, when and why this took. place by integrating historical, archaeological, ethnographic, and natural-science information. The resources included for discussion arc whales, seals, seabirds, …
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Fisheries management and flags of convenience
The over-exploitation of the world's fish resources and the depletion of many fish stocks have brought into focus the need for effective fisheries management and conservation measures. Many states have adopted international instruments or have participated in regional conservation committees to …
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Medicinal plant sales : a case study in Northern Zululand
… medicinal plants as a living. This results in over-exploitation of some plant species, sometimes to the brink ofextinction (Matsiliza and Barker 2001). This study aims at investigating the implications of plant harvests that are sold at bus ranks in northern KwaZuluNatal, and at identifYing …
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A comparitive analysis of patterns of recent extinction in birds and mammals
… and mammals pointing to the influence of human over-exploitation in the extinctions. Invasive species, particularly mammals such as rats, were also an important driver, influencing species extinctions by preying on native birds and competing with native mammals of similar biology. These findings …
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The Effect on the Durability Properties of Concrete of Partial Replacement of Natural Fine Aggregates with Recycled Concrete Fine Aggregates
… technology in the world has led to excessive exploitation of natural sand resources for use in the construction industry. This excessive utilization has led to the depletion of natural sand resources; for instance, in countries such as India and Indonesia, sand mafia and destruction of beaches …
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Regeneration potential of selected medicinal plants used to treat human and livestock diseases in Limpopo Province of South Africa
… plant species are under pressure due to human over-exploitation. The main objective of this study was to investigate effects of rooting hormones on the rooting ability that will help in domesticating some of the selected high valued medicinal plants, Elaeodendron transvaalense (bushveld …
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Inuit Harvesting Strategies in the Canadian Arctic and Implications for Wildlife Management
… harvesting strategies and selected cases of over-exploitation. Its purpose is to assess the credibility of the assumption that hunter-gatherer societies do not have a system of self-regulation. Theoretical explanations and models are described to elicit underlying principles and coherent …
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A coastal zone management framework for the Erongo Region of Namibia
… visiting the area. Without effective planning, over-exploitation of coastal resources could occur. This could place at risk the resource base on which the Region depends as a source of income. To achieve better management of the coastal environment of the Erongo Region, the dissertation proposes …
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An Assessment of Sea Turtle, Marine Mammal and Seabird Bycatch in the Wider Caribbean Region
… and fishing necessarily entails analysis of data over large spatial areas (ocean-basin) and multiple types of fishing activities. The acquisition the requisite data, however, requires considerable resources and many regions in the world are data-poor with respect to bycatch, including the Wider …
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Analysis of institutional arrangements and common pool resources governance: the case of Lake Tana sub-basin, Ethiopia
… As a result, the issues of management, governance of CPRs and how to prevent their over-exploitation are of great importance for development policy. This study examines the current state and dynamics of CPRs and overall resource governance system of the Lake Tana sub-basin. This research …
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Tipping points, regime shifts and species interactions within shallow marine ecosystems
… response to pressures such as climate change or over exploitation, entire ecosystems can shift to alternative states, a phenomenon termed regime shifts, and in extreme cases can collapse. Ecological regime shifts, or shifts between different ecological states, can be triggered by pulse …
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An assessment of enchroachment and resource management of Luano National Forest, Chingola
… venturing into agriculture, charcoal production over exploitation of timber and encroachment after retrenchment from the mines. Lack of forest management has led to environmental degradation and hinders socio-economic development.The questionnaire interview method was employed in obtaining …
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An assessment of enchroachment and resource management of Luano National Forest, Chingola
… venturing into agriculture, charcoal production over exploitation of timber and encroachment after retrenchment from the mines. Lack of forest management has led to environmental degradation and hinders socio-economic development.The questionnaire interview method was employed in obtaining …
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Análise da estrutura genética populacional da piraúna (cephalopholis fulva: serranidae) ao longo da costa e ilhas oceânicas brasileiras
… the year 2003 fishing statistics aim to some "recovery" of the total fisheries production, which probably is related to a change in industry practice. The target of commercial fishing became smaller species with low commercial value, but very abundants. The coney, Cephalopholis fulva (Serranidae), …
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Human recreational activity and its impact on a metropolitan coastline
… areas. If boulders on a sheltered shore are over-turned during bait gathering it has an adverse effect on the boulder communities, whether the boulders are replaced or left over-turned. When bait gatherers target on mussel-worms as bait, they may cause inadvertent damage to the primary matrix …
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A mathematical analysis of evolutionary rescue and niche construction
… perform and develop, too much of it can lead to over-exploitation of the constructed habitats by the mutants' non-niche-constructing ancestors (hereafter residents). In Chapter 2, I then model a niche-constructing population that must undergo evolutionary rescue to withstand habitat exploitation …
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