Dissertations / Theses on the topic 'Habitat selection analysis'
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Olovsson, Anders. "Habitat selection by moose (Alces alces) in southwestern Sweden." Thesis, Karlstad University, Faculty of Social and Life Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-1033.
Full textThe moose (Alces alces) is very important both economically and ecologically, therefore all knowledge of moose is vital for future management of the moose population. Little is known about moose habitat selection in Sweden. In coastal southwestern Sweden growing human population and new infrastructure projects continuously threaten to fragment and isolate local moose populations. The habitat selection of 22 moose, 8 males and 14 females, in southwestern Sweden was studied from February 2002 until December 2005. The moose were captured and fitted with GPS-collars and positions were collected at 2-hour intervals. The number of moose positions totaled 71103 during the study period of 46 months. Data for individual animals were divided into four seasons: spring, summer, fall and winter based on climate and moose biology. A total of 125 moose seasonal home ranges were generated and habitat use within each of the generated home ranges was studied using Euclidean distance-based analysis. A reclassified digital landcover map was divided into the land use classes agriculture, clear-cut, coniferous forest, deciduous forest, mire and mountain. The results showed that there was a difference in habitat selection between males and females. Males were significantly closer to forest and clear-cuts compared to females. Both males and females selected clear-cuts and avoided agriculture within their home ranges.
Älgen är en viktig art, både ekonomiskt och ekologiskt, och all kunskap är viktig för att även i framtiden kunna sköta en sund älgstam. Trots flertalet studier finns det många frågetecken om älgens habitatval i Sverige. En ökad exploateringstakt och nya infrastrukturprojekt hotar att fragmentera och isolera populationer av älg. Habitatvalet hos 22 älgar, 8 tjurar och 14 kor, i sydvästra Sverige studerades mellan februari 2002 och december 2005. Älgarna sövdes och utrustades med GPS-sändare, deras positioner registrerades varannan timma och det totala antalet positioner under den 46 månader långa studietiden var 71103 stycken. Data från varje älg delades in i 4 säsonger; vår, sommar, höst och vinter, baserat på klimat och älgens biologi. Totalt genererades 125 hemområden baserade på säsong, och valet av habitat inom varje hemområde studerades med hjälp av Euclidean distance-based analysis. En omklassificerad digital marktäckedata användes som var indelad i 6 olika klasser; odlad mark, hygge, barrskog, lövskog, myrmark och berg i dagen. Resultaten visade att det var skillnad mellan könen i hur de väljer habitat. Tjurarna var signifikant närmare barrskog och hyggen än korna, men både tjurar och kor selekterade för hyggen och undvek odlad mark inom deras hemområden.
Gibson, Jennifer. "Habitat selection and calling activity of the Lewin's Rail (Lewinia pectoralis pectoralis)." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/109466/2/Jennifer_Gibson_Thesis.pdf.
Full textSchmidt, Jason M. "Adaptive Foraging in a Generalist Predator: Implications of Habitat Structure, Density, Prey Availability and Nutrients." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1312815757.
Full textJohansson, Tomas. "Habitat selection, nest predation and conservation biology in a Black-tailed Godwit (Limosa limosa) population." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-4958-1/.
Full textHawkins, Emily. "Demography, Movement Patterns, and Habitat Selection of Blanding's Turtles at Canadian Nuclear Laboratories in Chalk River, Ontario." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35563.
Full textHarrison, Michelle Katherine. "The evolution of size-dependent habitat use in Cancer crabs, evidence from phylogenetics, natural selection analysis, and behavioural ecology." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq24150.pdf.
Full textCraighead, Kimberly A. "A Multi-Scale Analysis of Jaguar (Panthera onca) and Puma (Puma concolor) Habitat Selection and Conservation in the Narrowest Section of Panama." Antioch University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=antioch1556731572403679.
Full textKeller, Cherie A. "Assessment of Resource Selection Using Remote Sensing and Geographic Information Systems (GIS) for Two Vertebrates in Disparate Habitats: the Gopher Tortoise (Gopherus Polyphemus) and the North Atlantic Right Whale (Eubalaena Glacialis)." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001279.
Full textChupp, Adam Daniel. "Habitat Selection in Four Sympatric Small Mammal Species and the Effects of Potential Predators on Peromyscus Leucopus." VCU Scholars Compass, 2005. http://scholarscompass.vcu.edu/etd/657.
Full textWhitehead, Joanna K. "Breeding success of adult female kakapo (Strigops habroptilus) on Codfish Island (Whenua Hou) : correlations with foraging home ranges and habitat selection." Lincoln University, 2007. http://hdl.handle.net/10182/640.
Full textOzut, Deniz. "Evaluation Of The Adaptation Process Of A Reintroduced Anatolian Mouflon (ovis Gmelinii Anatolica) Population Through Studying Its Demography And Spatial Ecology." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12611746/index.pdf.
Full text3435 ha. (Mean ±
SE: 1934 ±
140 ha). The movements of the tracked individuals followed seasonal patterns: centers of activities changed according to seasons in 80% of the adult mouflon. Reintroduced mouflon selected southern aspects (p=0.001), increasing slopes &ndash
especially medium to high slope terrain &ndash
(slope >
30°
, p=0.002), and distant locations to villages and roads. Results indicate that appropriate protective measures should be implemented immediately to mitigate the causes of juvenile mortality. Restocking the population for the next 10 years with adult females would have a stabilizing effect on the declining population and will act as a buffering mechanism during the adaptation period to the new area.
Roxburgh, David James. "Prey and range use of lions on Tswalu Kalahari Reserve." Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac/thesis/available/etd-12132009-154240.
Full textPotter, Douglass W. "A GIS MODEL FOR APIARY SITE SELECTION BASED ON PROXIMITY TO NECTAR SOURCES UTILIZED IN VARIETAL HONEY PRODUCTION ON FORMER MINE SITES IN APPALACHIA." UKnowledge, 2019. https://uknowledge.uky.edu/forestry_etds/46.
Full textO'Leary, Rebecca A. "Informed statistical modelling of habitat suitability for rare and threatened species." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/17779/1/Rebecca_O%27Leary_Thesis.pdf.
Full textO'Leary, Rebecca A. "Informed statistical modelling of habitat suitability for rare and threatened species." Queensland University of Technology, 2008. http://eprints.qut.edu.au/17779/.
Full textGranzinolli, Marco Antonio Monteiro. "Levantamento, área de vida, uso e seleção de hábitat de Falconiformes na região central do estado de São Paulo." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-16072009-163754/.
Full textRaptors, similarly to other animal groups, are not randomly distributed in the different habitats in the terrestrial landscape. Knowing and understanding the factors (and implications) influencing these species to chose a certain habitat are essential in ecological studies. This subject has become even more important not only because of the lack of information on the ecology and natural history of raptors of the Neotropics, but also because of current scenario of habitat changes. Areas are being rapidly modified without a basic knowledge of the species/habitat relationship and the effects it may cause. Thus, the main goal of this thesis was to examine habitat use and selection by diurnal birds of prey in a heterogeneous landscape (151. 866 ha) in the central region of state of São Paulo (22° 15′ S; 47° 49′ W), where the Estação Ecológica de Itirapina (EEI) was considered the central area. Also, this study aimed at estimating the home range size of three raptor species (Falco femoralis, Rupornis magnirostris and Heterospizias meridionalis) through radio-telemetry; examining the efficiency of capture of birds of prey using two types of traps, bal-chatri and goshawk; and mapping land use/occupation of the study area and making the landscape analysis around the EEI. Between September 2005 and February 2007, 19 species of Falconiformes (Pandionidae n = 1, Falconidae n = 5, Accipitridae n = 13) were observed in a landscape basically occupied by monocultures (sugar cane 22 %, orange 14 %, eucalyptus 13 %) and pastures (2 1%). The average richness of Falconiformes in areas occupied by a monoculture was 4,6 species and 10,3 in natural areas. The species composition of the assemblage was more similar to those of other open areas influenced by Cerrado. Forty-eight individuals from five species were captured in the two types of traps. The general capture success was 15.3 % (n = 33) for the bal-chatri trap and 1 capture every 11,8 days (8,5 %) for the goshawk trap (n = 15). Implications and limitations of the capture of birds of preys in the areas were also discussed. The average home range obtained with the 95 % adaptive Kernel method (AK 95%) was 1.329 ± 780 ha for F. femoralis, 129 ± 140 ha for R. magnirostris and 1.883 ha for the individual of H. meridionalis. The average home range of F. femoralis was 2.8 higher in altered areas when compared to natural ones. In general, habitat quality seems to have influenced the different values of home range requirement of individuals, and also, in the selection/rejection of the different habitats. In most cases, monocultures were rejected, while natural areas were selected by raptors. Sugar cane plantations were rejected by all raptors. The only altered habitat used more than expected was pastures, selected by four of ten species analyzed. However, three species avoided this habitat. This is the first study to evaluate habitat selection by Falconiformes in Brazil and demonstrate that the increase of areas for agriculture may negatively affect even the most abundant and generalist species, contrary to some generalizations described in the literature. The interaction among the habitat structure, prey availability, morphology and hunting behavior seems to explain home range size requirements as well as the differential use of the various types of habitats.
Mexson, Joanne. "Selective isolation and taxonomic analysis of the genus Micromonospora." Thesis, University of Kent, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342134.
Full textFerrero, Richard C. "Life history and multivariate analyses of habitat selection patterns among small cetaceans in the central North Pacific Ocean /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/5475.
Full textGlasman, Daniela Kubudi. "Ensaios sobre a estrutura a termo da taxa de juros." reponame:Repositório Institucional do FGV, 2013. http://hdl.handle.net/10438/12420.
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This thesis consists of three works that analyses the term structure of interest rates using different datasets and models. Chapter 1 proposes a parametric interest rate model that allows for segmentation and local shocks in the term structure. Adopting U.S. Treasury data, two versions of this segmented model are implemented. Based on a sequence of 142 forecasting experiments, the proposed models are compared to established benchrnarks and find that they outperform in out-of-sample forecasting results, specially for short-term maturities and for the 12-month horizon forecast. Chapter 2 adds no-arbitrage restrictions when estimating a dynamic gaussian polynomial term structure model for the Brazilian interest rate market. This article propose an important approximation of the time series of term structure risk factors, that allows to extract the risk premium embedded in interest rate zero coupon instruments without having to run a fui! optimization of a dynamic model. This methodology has the advantage to be easily implemented and provides a good approximation for the term structure risk premia that can be used in many applications. Chapter 3 models the joint dynamic of nominal and real yields using an affine macro-finance no-arbitrage term structure model in order to decompose the break even inflation rates into inflation risk premiums and inflation expectations in the US market. The Yields-Only and the Macro version of this model are implemented and the estimated inflation risk premiums obtained are small and quite stable during the sample period, but have differences when comparing the two versions of the model.
Esta tese é composta de três artigos que analisam a estrutura a termo das taxas de juros usando diferentes bases de dados e modelos. O capítulo 1 propõe um modelo paramétrico de taxas de juros que permite a segmentação e choques locais na estrutura a termo. Adotando dados do tesouro americano, duas versões desse modelo segmentado são implementadas. Baseado em uma sequência de 142 experimentos de previsão, os modelos propostos são comparados à benchmarks e concluí-se que eles performam melhor nos resultados das previsões fora da amostra, especialmente para as maturidades curtas e para o horizonte de previsão de 12 meses. O capítulo 2 acrescenta restrições de não arbitragem ao estimar um modelo polinomial gaussiano dinâmico de estrutura a termo para o mercado de taxas de juros brasileiro. Esse artigo propõe uma importante aproximação para a série temporal dos fatores de risco da estrutura a termo, que permite a extração do prêmio de risco das taxas de juros sem a necessidade de otimização de um modelo dinâmico completo. Essa metodologia tem a vantagem de ser facilmente implementada e obtém uma boa aproximação para o prêmio de risco da estrutura a termo, que pode ser usada em diferentes aplicações. O capítulo 3 modela a dinâmica conjunta das taxas nominais e reais usando um modelo afim de não arbitagem com variáveis macroeconômicas para a estrutura a termo, afim de decompor a diferença entre as taxas nominais e reais em prêmio de risco de inflação e expectativa de inflação no mercado americano. Uma versão sem variáveis macroeconômicas e uma versão com essas variáveis são implementadas e os prêmios de risco de inflação obtidos são pequenos e estáveis no período analisado, porém possuem diferenças na comparação dos dois modelos analisados.
Morgan, Simon. "Black rhinoceros (Diceros bicornis) habitat selection and movement analysis." Thesis, 2010. http://hdl.handle.net/10413/5362.
Full textThesis (Ph.D.)-University of KwaZulu-Natal, Westville, 2010.
Smulders, Mary Catherine Alexandra. "Spatial-temporal analysis of grizzly bear habitat use." Thesis, 2009. http://hdl.handle.net/1828/1663.
Full textMozel, Kristin. "Habitat selection by songbirds in Manitoba's tall-grass prairie: a multi-scale analysis." 2010. http://hdl.handle.net/1993/4072.
Full textDarlington, Siobhan. "Cumulative effects of human landscape change, predators, and natural habitat drive distributions of an invasive ungulate." Thesis, 2018. https://dspace.library.uvic.ca//handle/1828/10397.
Full textGraduate
Bourbonnais, Mathieu Louis. "Spatial analysis of factors influencing long-term stress and health of grizzly bears (Ursus arctos) in Alberta, Canada." Thesis, 2013. http://hdl.handle.net/1828/4909.
Full textGraduate
0768
0463
0478
mathieub@uvic.ca
Kuczynski, Eva C. "Habitat selection and food-web relations of Horned Grebes (Podiceps auritus) and other aquatic birds on constructed wetlands in the Peace Parkland, Alberta, Canada." Master's thesis, 2009. http://hdl.handle.net/10048/409.
Full textEcology
Wang, Lurong. "Immigration, Literacy, and Mobility: A Critical Ethnographic Study of Well-educated Chinese Immigrants’ Trajectories in Canada." Thesis, 2011. http://hdl.handle.net/1807/27608.
Full text