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 1194 for “"Endemic"”.
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Conservation of endemic species in China
… of the vertebrate genera and 7% plant genera are endemic to China. During its rapid social and economic development, increasing habitat loss and fragmentation have occurred. However, it wakes up to the threats of biodiversity in recent years. Protected areas, as an essential conservation tool to …
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An assessment of the distribution and conservation status of endemic and near endemic plant species in Maputaland
… native plant species. Of those, over 203 are endemic or near endemic to this area. However, the current high human population density in MCE, coupled with high population growth, has increased the pressure on the natural resources of the region and threatens the natural vegetation and plant …
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A study of endemic syphilis in Palestine
… of the history of syphilis is given. Classical endemics in Scotland, Norway and Sweden, Bosnia and Herzegovina, Russia and other countries are described. The scarcity of primary manifestations and apparent rarity of sequelae on the one hand and the preponderance of mucous membrane and skin …
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Systematics of the Philippine endemic Ixora L. (Rubiaceae, Ixoreae)
… on environmental requirements of Ixora species endemic to the Philippines using Maxent, and 3) publish a comprehensive taxonomic revision of the Philippine Ixora including nomenclatural treatments (lectotypifications) and new records, full illustrations, distribution maps and keys of the …
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Population genetics and conservation of the endemic Mus cypriacus.
Endemic species have a higher risk of extinction due to habitat destruction, introduction of invasive species, pollution, or overexploitation. Mus cypriacus was first described in 2006 and is one of the two endemic rodents from Cyprus. It diverged from Mus macedonicus 0.53 million years ago, …
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On Epitope-Paratope Interactions of Emerging to Endemic Viruses
… with high mortality, to continually-evolving endemic viruses such as influenza A (flu). Meanwhile, SARS-CoV-2 is currently transitioning from an emerging to an endemic virus with unknown evolutionary potential. Though highly differentiated, these three viruses present a common challenge to …
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Modeling Endemic Bark Beetle Populations in Southwestern Ponderosa Pine Forests
… outbreak levels, and low population density, endemic levels. The majority of scientific research is focused on outbreak populations because of the associated economic, ecological, and social impacts. Endemic populations are rarely studied but could provide information about the triggers that …
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Structured deterministic models applied to malaria and other endemic diseases
… assumptions and conditions for the existence of endemic equilibria are identified. Numerical results suggest that the incorporation of two vaccination classes, as opposed to only one, allows for a greater accuracy in predicting threshold vaccination coverages for disease eradication. The model …
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Demography and ecology of a declining endemic: The Olympic marmot
Protected areas serve to conserve species, habitats, and ecological processes. However, biological systems within even large parks are increasingly affected by outside perturbations. The Olympic marmots (Marmota olympus) are ground-dwelling squirrel that inhabit high-elevation meadows almost …
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Demography and ecology of a declining endemic: The Olympic marmot
Protected areas serve to conserve species, habitats, and ecological processes. However, biological systems within even large parks are increasingly affected by outside perturbations. The Olympic marmots (Marmota olympus) are ground-dwelling squirrel that inhabit high-elevation meadows almost …
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Phytochemical and pharmacological studies on some endemic Yucatecan medicinal plants
Four endemic medicinal plants from the Yucatan peninsula belonging to genera with little pharmacological and phytochemical reported information and used for medicinal purposes by local communities were selected. The species selected included Jacquinia flammea Millsp. ex Mez, Sideroxylon …
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Confirming the status of Lancashire’s endemic freshwater Nemertean – Prostoma jenningsi
… study was to confirm the status of Lancashire’s endemic freshwater Nemertean – Prostoma jenningsi. Due to human induced environmental change and the degradation of habitats, a vast decline in biodiversity has been witnessed on a global scale, with losses occurring among many native UK species. P. …
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The burden and control of bovine tuberculosis in endemic settings
… impact of vaccination on the burden of bTB in endemic countries is explored to develop an evidence-based approach for combating bTB. To achieve this, the epidemiology of bTB and available control tools are described in Chapter 1. Additionally, the epidemiological situation of bTB in India and …
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Ecological and evolutionary processes in two southern African endemic birds
… accomplish that I studied two southern African endemic Cercotrichas scrub-robins: C. coryphaeus and C. signata. Despite its phylogenetic proximity the two study species occupy the two ends of the habitat spectrum available in southern Africa: semi-arid Karoo vs. Forest.
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Assessing conservation measures for five Southern African endemic shark species
… 111 species of sharks. Many of these species are endemic to southern Africa (defined as the coastlines of Namibia, South Africa and Mozambique) but are poorly studied, despite their classifications of concern according to the International Union for the Conservation of Nature (IUCN) Red List. …
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A conservation genetic study of threatened, endemic southern African seabirds
… This is the case in the ABE, where some endemic seabird species are better at responding to changes in their environment than others. Twentieth century shifts in the distribution of key pelagic prey species in the ABE have had serious consequences for endemic seabirds. The African Penguin …
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Reproductive Patterns of Three Plethodon Salamanders Endemic to the Ouachita Mountains
Monthly collections of Plethodon caddoensis, the Caddo Mountain salamander, Plethodon ouachitate, the Rich Mountain salamander and Plethodon fourchensis, the Fourche Mountain salamander were made in 1985 and 1986. Reproductive patterns, fecundity and length-weight relationships were examined. When …
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Germination responses of endemic land-races of Saudi-Arabian cereal species
This investigation of endemic land-races of Saudi-Arabian cereals, Triticum aestivum, Triticum durum, Hordeum vulgare, Panicum miliaceum and Pennisetum glaucum was aimed at identifying and characterizing stress-tolerant populations appropriate for germplasm-banking. Native soils were saline, …
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