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 80 for “"anthropogenic factors"”.
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Anthropogenic Factors Affecting Mountain Lions in the Black Hills of South Dakota
Historically, mountain lions (Puma concolor) in North America were persecuted, at least since European colonization. The distribution of mountain lions declined for decades until in the mid-1900s, when they persisted only in the mountains of western North America and wetlands of the Florida …
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Influence of natural and anthropogenic factors on Water, Sanitation, and Hygiene (WaSH)
The combination of natural disasters and inadequate infrastructure introduces unique challenges in providing safe drinking water in low-income countries. For example, Nepal faces several challenges in managing sporadic diarrheal outbreaks across the country, given its susceptibility to extreme …
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Geospatial analysis of risk components for elevated blood lead levels in Kansas: geologic and anthropogenic factors
Children are the demographic most susceptible to and affected by lead poisoning. Lead contamination in soil has been recorded as being primarily from lead-based paint, historic leaded gasoline emissions, and from lead point-source emitters. The highest risk of elevated blood lead level (BLL) is …
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Assessment of environmental and anthropogenic factors that affect movement of sedentary blue wildebeest (Connochaetes taurinus) in the Kalahari region of Botswana
… to face the effects of rising temperatures and anthropogenic influences. The most dramatic effects of these concerns have been documented in Southern Africa, where wildlife and livestock are often the main source of income. This research uses the Kalahari region of Botswana as a case study. …
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Gastrointestinal parasite infections in Chacma baboons (Papio ursinus) of the Cape Peninsula, South Africa : the influence of individual, group and anthropogenic factors
This study investigates whether anthropogenic changes in the Cape Peninsula, South Africa, have affected gastrointestinal parasite infections in a free-living population of chacma baboons (Papio ursinus). Data on parasite diversity and prevalence were obtained from 616 faecal samples collected from …
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Gastrointestinal Parasite infections in Chacma Baboons (Papio ursinus) of the Cape Peninsula, South Africa: the influence of individual, group, and anthropogenic factors
… populations. This study investigates whether anthropogenic changes in the Cape Peninsula, South Africa, have affected gastrointestinal parasite infections in a free-living population of chacma baboons (Papio ursinus). Data on parasite diversity and prevalence were obtained from 616 faecal …
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Seasonal Habitat Use of The Florida Manatee (Trichecus Manatus Latirostris) In The Crystal River Natural Refuge With Regards To Natural And Anthropogenic Factors
Natural and anthropogenic factors work together to influence species habitat use. Kings Bay in Crystal River, Florida serves as critical habitat for the Florida manatee, but is also used extensively by humans. This study documented the seasonal dispersion and behavioral patterns of manatees in …
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Why Are Some Watersheds More Sediment-Productive Than Others? An Explainable AI Approach
… using Shapley values revealed that anthropogenic factors—including urban area, pasture area, and road density—exert stronger controls on SDR than natural drivers such as slope or precipitation, while the opposite relationship was observed for SY, where natural drivers prevailed over …
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Effects of Environmental Factors and Sport Fisheries Management Practices on Largemouth Bass (Micropterus Salmoides) Fluctuations in Abundance in Illinois Inland Lakes
… effects on the response variables. Each anthropogenic predictor was analyzed for main effects and first-order interactions with the environmental predictors. Multiple-lake (for broad-based treatment effects) and lake-specific analyses of the anthropogenic component were performed. …
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Climatic and Anthropogenic Influences on Food and Water Security
… systems and their interaction with climate and anthropogenic factors. Specifically, it has the following research objectives: (1) to quantify the sensitivity of crop yields to droughts for major crops and investigate the association of various climate and anthropogenic factors on the change in …
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Historical and Contemporary Variables Affecting the Range and Distribution of Aedes aegypti, The Yellow Fever Mosquito, in The United States
… areas and bite human hosts; understanding the factors that affect the historical and current range of the pest is invaluable (Gubler, 1998). Although these viruses are not normally found in the United States, lack of vaccinations and wide-spread presence of the mosquito could lead to these …
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A Histopathological Review of Immune Response in Largemouth Bass to Parasitic Infections of Soft Tissues
… effect stressors have on the health of the fish. Anthropogenic factors can stress a fish’s immune system and inhibit immune responses. This study investigated the response of eosinophilic cells and macrophage aggregates to parasites in the livers, spleens, and gonads of Largemouth Bass, …
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Using statistical learning approaches to understand trends and variability of tornadoes across the continental United States
… states were examined and modeled using anthropogenic and large-scale climate covariates in a hierarchical Bayesian inference framework. Anthropogenic factors include increases in population density and better detection systems since the mid-1990s. Large-scale climate variables include El …
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A camera trap assessment of factors influencing leopard (Panthera pardus) habitat use in the Nouabalé-Ndoki National Park, Republic of Congo
… pardus) are faced with increasing levels of anthropogenic pressure resulting in population declines across much of their historical range. While there is relatively limited knowledge of leopards occurring in African rain forests, their abundance and distribution is assumed to be impacted by a …
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Vigilance behavior and land use by sandhill cranes (<i>grus canadensis</i>)
… budgets changed with behavioral, climatic, and anthropogenic factors. I measured two different postures that could be interpreted as vigilance. Cranes significantly altered the time spent in the alert investigative posture with differences in gender and modal non-vigilant behavior. They …
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Atmospheric and spatial drivers of egg abundance in beach nesting shorebirds across an urban-coastal gradient of the Rockaway Peninsula, New York
… influence of atmospheric, geomorphological, and anthropogenic factors on egg abundance and nesting patterns across four distinct areas of the Rockaway Peninsula, New York. Descriptive analyses revealed clear spatial structuring of nesting communities. Colonial species (Common Tern and Least Tern) …
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EVALUATING RANGELAND CONDITIONS IN NEIGHBORING PROTECTED AREAS OF RUSSIA AND MONGOLIA
… order to assess the levels at which climatic and anthropogenic factors are influencing this decline.
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EVALUATING RANGELAND CONDITIONS IN NEIGHBORING PROTECTED AREAS OF RUSSIA AND MONGOLIA
… order to assess the levels at which climatic and anthropogenic factors are influencing this decline.
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Hypoxic Stress Induced Gene Modulation in Medaka (Oryzias latipes) and Xiphophorus maculatus
… or biomarkers would be useful in regulation of anthropogenic factors that are known to produce hypoxia. The studies detailed herein are an attempt to identify genes that show robust changes in transcriptional expression when two different fish are exposed to hypoxia. Genes showing a robust and …
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