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.
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Showing 1 to 20 of 53 for “"OVERGRAZING"”.
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The impact of overgrazing on reptile diversity and population dynamics of Pedioplanis l. lineoocellata in the southern Kalahari
Die Vegetationskomposition und –struktur, beispielsweise die unterschiedliche Architektur von Bäumen, Sträuchern, Gräsern und Kräutern, bietet ein großes Spektrum an Habitaten und Nischen, die wiederum eine hohe Tierdiversität in den Savannensystemen des südlichen Afrikas ermöglichen. Dieses …
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Η ΑΛΛΑΓΗ ΤΟΥ ΠΑΡΑΔΟΣΙΑΚΟΥ ΠΡΟΤΥΠΟΥ ΔΙΑΧΕΙΡΙΣΗΣ ΤΗΣ ΓΗΣ ΣΤΟ ΑΡΧΙΠΕΛΑΓΟΣ ΤΟΥ ΑΙΓΑΙΟΥ: ΕΠΙΠΤΩΣΕΙΣ ΣΤΑ ΝΗΣΙΩΤΙΚΑ ΟΙΚΟΣΥΣΤΗΜΑΤΑ
… THE ABANDONMENT OF AGRICULTURAL LAND AND THE OVERGRAZING THAT FOLLOWS CAUSE DEGRADATION AS IT CONCERNS BOTH AGRICULTURAL AND ENVIRONMENTAL PARAMETERS.
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The environmental qualities of lowcost housing schemes: A case study of the environment of a typical superblock at Hanover Park, Phillip, Cape, in February, 1973
… to wagon transport in the absence of hard roads. Overgrazing and firewood collection upset the delicate natural ecology. The removal of the Mediterranean-type flora resulted in shifting sands of the true desert.
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A functional analysis of the response of the Southern Kalahari dune vegetation to land-use intensity
… of plant responses to those pressures. Overgrazing and desertification are examples of the stressors that affect plant community composition, on both large and small scales. In order to investigate the plant community response to these stressors it has been shown that it is more …
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Asleep in the Arms of God
… including racism, patriarchy, overplanting and overgrazing, and pollution, which contribute to and climax in the postmodern fragmentation. The novel attempts to make a critique of the exploitative rage of Western civilization.
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Variations in albedo among natural and disturbed South Western Cape veld types
… and disturbed veld types. Disturbances such as overgrazing, crop-development and fire are included. Surface readings were taken during January and June in ten veld types and floristic and soil data as well as climatic variables were measured. Disturbed veld types were found to have significantly …
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Landscape scale measurement and monitoring of biodiversity in the Australian rangelands
… study area is grazing-induced degradation, or overgrazing. Two potential spatially comprehensive surrogates of pressure on biodiversity were identified. The first surrogate was based on the differential effect of overgrazing on waterenergy balance and net primary productivity: water-energy …
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The roles of exotic and native tree species in preventing desertification and enhancing degraded land restoration in the north east of Libya. Reciprocal effects of environmental factors and plantation forestry on each other, assessed by observations on growth and reproductive success of relevant tree species, and environmental factors analysed using multivariate statistics.
… and human activities such as overcultivation, overgrazing and deforestation. Afforestation programs are one of the most effective means in preventing desertification. For many years Libya has had afforestation programs in order to restore degraded land and in response to rapid desert …
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Wildlife Habitat in the James River Valley, South Dakota
… the value of the floodplain to wildlife although overgrazing and flooding were preventing the full potential of the floodplain as wildlife habitat from developing.
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The Influence of Livestock grazing on Plant Species Diversity and Distribution at Kiranjeranje Ward-Kilwa District
… value (1.84805), this is due to the fact that overgrazing results into removal of plant species and severe depletion of vegetation resources The study recommends development of sustainable grazing system that combine traditional pastoral knowledge, scientific management principle and pastoral …
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An analysis of farmers-herdsmen conflict and the resolution mechanisms in Benue State, Nigeria.
… that farmers-herdsmen conflict is caused by overgrazing, destruction of farm crops, killing of herdsmen cattle, climate change, environmental degradation, resource scarcity and identity discrimination among others. The study uses environmental/resource scarcity theory and identity …
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An integrated modelling approach for sustainable management of semi-arid and arid rangelands
… evaporation from the soil. Disturbances like overgrazing influence these positive feedback mechanisms by affecting vegetation cover and composition. In the second part, I present a modeling approach that has the power to transfer and integrate ecological information from the small scale …
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Snail grazing effects on the composition and metabolism of benthic diatom communities and subsequent effects on fish growth
… effect is overwhelmed at higher densities by overgrazing and stirring inhibition. The dominant benthic algal group in the containers were pennate diatoms. Grazed containers contained a larger percentage of the non-motile classes of diatoms, as compared to the motile forms which predominated in …
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Analysis of gully erosion as a hydro-geomorphological hazard in Thulamela Municipality, Limpopo Province, South Africa
… challenges, worsened by deforestation, overgrazing and climate change. This study examines gully erosion as a hydro-geomorphological hazard in Thulamela Municipality, Limpopo Province, South Africa. The aim of this research was to investigate the occurrence and intensity of gully erosion …
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Land use Activities in Protected Areas and its Implications for Conservation: A Case Study of Maswa Game Reserve
… such effects includes causing desertification; overgrazing; loss of habitat and destruction of ecosystem; land degradation/soil erosion; spread of zoonotic diseases; deter movement of wild animals; human wildlife conflict and poaching.
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Taxonomy, genesis, and parent material distribution of high- elevation forest soils in the southern Appalachians
… to the forest floor resulting from fire, overgrazing, logging, or erosion could have a major impact on ecosystem resilience during stress.
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Changes in the seasonal activity of bats occuring in the Kunene region, Namibia: Influence of environmental factors
… which can lead to habitat degradation due to overgrazing and denudation of large trees for firewood. Therefore long-term monitoring of bat activity in the Kunene Region is important where environmental conditions may be extreme and variable.
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Effects of Ponderosa Pine Ecological Restoration on Forest Soils and Understory Vegetation in Northern Arizona
<p>The human exclusion of wildfire and overgrazing by livestock since settlement have caused dramatic changes in ponderosa pine (<em>Pinus ponderosa </em>Dougl ex Laws) forest ecosystems. These changes include increased numbers of tree stems, reduced understory cover and diversity, and the …
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Habitat utilisation by the white rhinoceros and status of the species in Namibia
… unsuitable habitat for white rhino due to overgrazing and low rainfall, but with management support, rhinos can persist and thrive largely independent of the available habitat. With respect to the favourable status of the species world-wide, continued introductions were recommended, …
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Restoring and valuing global kelp forest ecosystems
… ocean. Concurrently, rising sea temperatures, overgrazing by marine herbivores, sedimentation, and water pollution have caused kelp forests populations to decline in most regions across the world. Effectively managing the response to these declines will be pivotal to maintaining healthy marine …
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