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Dissertations / Theses on the topic 'Migratory pattern'

Author: Grafiati

Published: 9 March 2023

Last updated: 31 July 2025

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1

Herse, Mark Richard. "Landscape ecology of two species of declining grassland sparrows." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/35786.

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Master of Science<br>Department of Biology<br>Alice Boyle<br>Species extinctions over the past two centuries have mainly been caused by habitat destruction. Landscape change typically reduces habitat area, and can fragment contiguous habitat into remnant patches that are more subject to anthropogenic disturbance. Furthermore, changes in the landscape matrix and land-use intensification within remaining natural areas can reduce habitat quality and exacerbate the consequences of habitat loss and fragmentation. Accordingly, wildlife conservation requires an understanding of how landscape structur

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2

Oates, Nathan Lewis Trudy. "Migratory patterns stories /." Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/7186.

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Title from PDF of title page (University of Missouri--Columbia, viewed on March 2, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dr. Trudy Lewis, Dissertation Supervisor. Vita. Includes bibliographical references.

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3

Castagnone, E. ""Building a comprehensive framework of African migration patterns: the case of migration between Senegal and Europe"." Doctoral thesis, Università degli Studi di Milano, 2011. http://hdl.handle.net/2434/160858.

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Migration theories, which guided prior research, have been predominantly based on static dichotomous categorizations. In particular most research has been guided by assumptions conceiving migration primarily as: 1) a one-off move from a departure country “A” to a destination country “B”; 2) directed to Europe (revealing a strong Eurocentric bias); 3) entailing a permanent settlement; 4) and with little or no spontaneous return from Europe to origin countries. According to this logic, previous research concentrated almost exclusively on specific phases of the migration process (settlement and i

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4

Ponti, de la Iglesia Raquel. "Evolutionary patterns and processes of migratory behaviour in Palearctic-Paleotropical birds = Patrones y procesos evolutivos del comportamiento migratorio en aves del Paleártico-Paleotrópico." Doctoral thesis, Universitat de Barcelona, 2018. http://hdl.handle.net/10803/665205.

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One of the most fascinating aspects of birds is their capability of migrate from one area to another throughout the year. Unravelling the patterns and processes involved in the evolution of migration is paramount to understand the current biogeography, ecology and evolution of migratory birds. On this basis, the main aim of the present thesis was to extend the knowledge of the mechanisms involved in the evolution of bird migration. To achieve that two main sections are presented in this thesis. In the first one, the aims were to disentangle the patterns of evolution of migratory behaviour and

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Conti, Francesca. "Leaving or staying - an analysis of Italian graduates' migratory patterns." Thesis, University of Sussex, 2012. http://sro.sussex.ac.uk/id/eprint/39453/.

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The migration of graduates is one of the main characteristics of the current phase of Italian emigration. This thesis investigates why Italian graduates are migrating both within and outside Italy. The main research questions this thesis gravitates around are: why do Italian graduates migrate? What is the difference, if any, in terms of motivations, between graduates who decide to migrate internally within Italy as compared to the ones who decide to migrate to the UK? Why do some graduates stay in their home town despite regional and national differentials in terms of employment and lifestyle

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6

Tierney, Lauren. "An Agent-Based Model of Wildlife Migratory Patterns in Human-Disturbed Landscapes." Thesis, University of Oregon, 2015. http://hdl.handle.net/1794/19266.

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In recent years, human decision-making has led to significant landscape impacts in the western United States. Specifically, migratory wildlife populations have increasingly been impacted by rural urban development and energy resource development. This research presents the application of agent-based modeling to explore how such impacts influence the characteristics of migratory animal movement, focusing on mule deer (Odocoileus hemionus) in Western Wyoming. This study utilizes complex adaptive systems and agent-based modeling frameworks to increase understanding of migratory patterns in a chan

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DeSaix, Matthew G. "Migratory patterns and population genetic structure in a declining wetland-dependent songbird." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5432.

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Understanding migratory connectivity is essential for assessing the drivers behind population dynamics and for implementing effective management in migratory species. Genetic markers provide a means to describe migratory connectivity, as well as incorporate population genetic analyses, however genetic markers can be uninformative for species with weak genetic structure. In this study, we evaluate range-wide population genetic structure and migratory connectivity in the prothonotary warbler, Protonotaria citrea, a wetland-dependent neotropical migratory songbird, using high-resolution genetic

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8

Gordo, Villoslada Óscar. "Spatial and temporal migratory patterns of trans-Saharan birds in the Iberian Peninsula." Doctoral thesis, Universitat de Barcelona, 2006. http://hdl.handle.net/10803/803.

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The spatial and temporal variability of migratory phenology of <i>Ciconia ciconia, Cuculus canorus, Apus apus, Hirundo rustica</i> and <i>Luscinia megarhynchos</i> were studied by means of 44000 records for 1400 spanish sites during the period 1944-2004. In all species, first individuals arrive to the southern areas of Iberia, to low altitude sites, with dry and warm summers, and near to the Straits of Gibraltar. A. apus and <i>H. rustica</i> showed quite similar spatial patters due to the strong influence of fixed factors, which impose optimum migratory pathways. The onset of singing of <i>C.

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9

Andrade, Renan Siqueira Leite de. "Estudo do comportamento migratório da truta (Salmo trutta L.) no limite sul de sua distribuição." Master's thesis, Universidade de Évora, 2020. http://hdl.handle.net/10174/27971.

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A região central de Portugal representa o limite sul da distribuição dos dois ecótipos de Salmo trutta L, o residente (i.e., truta-de-rio) e o anádromo (i.e., truta-marisca). Para além dos constrangimentos a uma escala mais global que as espécies de peixes experienciam, como o aquecimento global, os rios dessa região estão severamente fragmentados pela presença de grandes barragens e pequeno-médios açudes, construídos maioritariamente para a produção de eletricidade e recolha de água para uso doméstico, industrial e para a agricultura. Esforços direcionados ao aumento do conhecimento sobre a t

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10

Walther, Benjamin (Benjamin Dwaine). "Migratory patterns of American shad (Alosa sapidissima) revealed by natural geochemical tags in otoliths." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/38635.

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Thesis (Ph. D.)--Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Biology; and the Woods Hole Oceanographic Institution), 2007.<br>Includes bibliographical references (p. 188-204).<br>Geochemical signatures in the otoliths of diadromous fishes may allow for retrospective analyses of natal origins. In an assessment of river-specific signatures in American shad (Alosa sapidissima), an anadromous clupeid native to the Atlantic coast of North America, stable isotope and elemental ratios in otoliths of juvenile American shad produc

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11

Xu, Hongjian. "Neuronal mechanisms underlying temperature effects on the flight motor pattern of Locusta migratoria." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq20598.pdf.

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12

Grist, Hannah. "Patterns and consequences of variation in winter location in a partially migratory population of European shags." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=225313.

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13

Becker, Adam John. "Survivorship and Breeding Dispersal Patterns of a Migratory, Socially Monogamous Passerine; the Scissor-tailed Flycatcher (Tyrannus forficatus)." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/2653.

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Survivorship (the likelihood of survival from one year to the next) and breeding dispersal (movement between breeding seasons) exhibit considerable variability at both the inter- and intraspecific levels. Using eight years of data (2008-2015), from my study site in southwest Oklahoma, I characterized survivorship and breeding dispersal of the Scissor-tailed Flycatcher (Tyrannus forficatus) in a mixed-grass prairie ecoregion. My results suggest that estimated survivorship of Scissor-tailed Flycatchers is low, especially to the congeneric Eastern Kingbird (T. tyrannus), and was likely underestim

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Bodiba, Molebogeng K. "Ancient DNA analysis of the Thulamela remains : deciphering the migratory patterns of a Southern African human population." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/45931.

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Bio-archaeology is the study of biological remains found at sites of archaeological interest. It is an interdisciplinary science employing different scientific fields including physical anthropology, geography, archaeology and genetics. Genetic analysis includes ancient DNA (aDNA) studies, now a specialised field in genetics. This approach was used to analyse human skeletal material of eight individuals from various Iron Age archaeological sites in southern Africa. Included in this sample is a naturally mummified individual from Tuli, in Botswana. The context of the specimens found in the Limp

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Teter, Shara Marie. "Migratory Patterns and Habitat Use of the Sand Tiger Shark (Carcharias taurus) in the Western North Atlantic Ocean." NSUWorks, 2013. http://nsuworks.nova.edu/occ_stuetd/133.

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Large population declines for sand tiger sharks (Carcharias taurus) in parts of its global range are well documented, resulting in a strong need for biologically informed conservation and management measures. Although sand tigers in the western North Atlantic have been listed as a Species of Concern by the US government since 1997, details of their seasonal migratory movements and especially vertical habitat use patterns along the US East Coast are limited. Understanding these movement patterns is vital to reducing fishery-related mortality of these sharks and informing other management effort

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Howey, Lucy A. "Seasonal Movement Patterns, Migratory Behavior and Habitat Utilization of the Bblue Shark (Prionace glauca) in the Western North Atlantic." NSUWorks, 2010. http://nsuworks.nova.edu/occ_stuetd/217.

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The blue shark (Prionace glauca) is among the most abundant and widely distributed of all oceanic elasmobranchs. Millions of blue sharks are caught annually worldwide in pelagic long line fisheries, and it accounts for the largest component of auctioned fin weight in the international shark fin trade. There is growing concern about the depletion of its populations worldwide and impacts of such large scale removal of an apex predator on oceanic ecosystem stability. The fragmentary nature of life history information available for blue sharks, including on its detailed movement and migratory beha

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Thomisch, Karolin [Verfasser], Wilhelm [Akademischer Betreuer] [Gutachter] Hagen, and Helmut [Gutachter] Hillebrand. "Distribution patterns and migratory behavior of Antarctic blue whales / Karolin Thomisch ; Gutachter: Wilhelm Hagen, Helmut Hillebrand ; Betreuer: Wilhelm Hagen." Bremen : Staats- und Universitätsbibliothek Bremen, 2016. http://d-nb.info/1135716250/34.

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Meath, Brenna A. "Stable Isotopes in the Eye Lenses of Doryteuthis plei: Exploring Natal Origins and Migratory Patterns in the Eastern Gulf of Mexico." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/7063.

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Stable isotope analysis is an emerging tool to examine trophic pathways and migratory patterns of marine organisms. Squid are widely distributed in coastal and deep water regions of the Gulf of Mexico. Stable isotope ratios of carbon and nitrogen found within cephalopod tissues can provide information on both trophic level and habitat of their food sources. More recently, ontogenetic changes in stable isotope ratios within squid eye lenses have been documented. Concentric layers of crystallin proteins are added to the lens as the squid ages; the center of the lens contains

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19

Dammannagoda, Acharige Sudath Terrence. "Genetic stock structure and inferred migratory patterns of skipjack tuna (Katsuwonus pelamis) and yellowfin tuna (Thunnus albacares) in Sri Lankan waters." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16479/1/Sudath_Dammanngoda_Thesis.pdf.

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Tuna are the major marine fishery in Sri Lanka, and yellowfin tuna (YFT) (Thunnus albacares) and skipjack tuna (SJT) (Katsuwonus pelamis) represent 94% of all tuna caught. The tuna catch in Sri Lanka has increased rapidly over recent years and this is true generally for the Indian Ocean. Tuna are a major animal protein source for 20 million people in Sri Lanka, while marine fisheries provide the main income source for most Sri Lankan coastal communities. While the importance of the fishery will require effective stock management practices to be employed, to date no genetic studies have been

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Dammannagoda, Acharige Sudath Terrence. "Genetic stock structure and inferred migratory patterns of skipjack tuna (Katsuwonus pelamis) and yellowfin tuna (Thunnus albacares) in Sri Lankan waters." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16479/.

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Tuna are the major marine fishery in Sri Lanka, and yellowfin tuna (YFT) (Thunnus albacares) and skipjack tuna (SJT) (Katsuwonus pelamis) represent 94% of all tuna caught. The tuna catch in Sri Lanka has increased rapidly over recent years and this is true generally for the Indian Ocean. Tuna are a major animal protein source for 20 million people in Sri Lanka, while marine fisheries provide the main income source for most Sri Lankan coastal communities. While the importance of the fishery will require effective stock management practices to be employed, to date no genetic studies have been u

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21

AMIGONI, LIVIO. "Shababs on the Move: Ethnography on the Underground Migratory Routes from Sudan to the United Kingdom." Doctoral thesis, Università degli studi di Genova, 2022. https://hdl.handle.net/11567/1099305.

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The present research project aimed to investigate the struggles undocumented Sudanese migrant face to circumvent legal and geographical borders and to gain some form of citizenship. I focused on the kind of journeys, referred to as sombok, their precondition, narration and social practices implemented along the irregular routes from Sudan to the United Kingdom. In doing so, particular interest was paid to the production, circulation and resilience of migratory knowledge roaming in transnational networks and resulting in consequent mobility patterns, tenaciously and ceaselessly reproduced. Inde

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22

Mendilaharsu, Maria de los Milagros López. "Rotas migratórias, áreas de uso intenso e padrões de mergulho de tartarugas-de couro (Dermochelys coriacea) no Atlântico Sul Ocidental." Universidade do Estado do Rio de Janeiro, 2011. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3128.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>As tartarugas marinhas são espécies ameaçadas, altamente migratórias que apresentam um ciclo de vida longo e uma ampla distribuição geográfica. Assim, melhorar a nossa compreensão sobre a ecologia espacial das tartarugas marinhas é essencial para a elucidação de aspectos da sua história de vida e para o desenvolvimento de medidas eficazes de conservação. Esta tese compreende um conjunto de artigos ou capítulos que visam contribuir ao conhecimento da ecologia espacial da tartaruga-de-couro, Dermochelys coriacea. Este estudo utilizou

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Pautzke, Sarah M. "Distribution Patterns of Migratory Striped Bass in Plum Island Estuary, Massachusetts." 2008. https://scholarworks.umass.edu/theses/209.

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This is the first study to assess how the coastal migratory stock of striped bass (Morone saxatilis) uses non-natal New England estuaries during their foraging migration. Using hydroacoustic telemetry from June through October in Plum Island Estuary, Massachusetts, I examined how long coastal migratory striped bass stayed throughout the seasons, if they were equally distributed, if individual striped bass were distributed differently, and if distribution changed with season, tide, or light. Striped bass, ages 2-5 (300-480 mm), were tagged with VEMCO transmitters in the spring and summer of 2

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"MIGRATION PATTERNS IN BIRDS OF THE NEW WORLD: SEASONAL, MORPHOMETRIC AND PHYSIOLOGICAL CONSIDERATIONS." Tulane University, 2017.

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acase@tulane.edu<br>Tyrannus is a highly diverse genus with respect to migration strategies within the largest adaptive radiation of birds in the world (Tyrannidae). Within the genus, there are Nearctic- Neotropical migrant, Neotropical austral migrant, intratropical migrant, and resident species and subspecies. The overall goal of this dissertation was to use a variety of methods to explain the diversity of migration patterns found in the New World (focusing on the Tyrannus genus) to gain a better understanding of the ecology and evolution of migration in birds. In my first chapter I develope

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Ching, Chia-lin, and 青佳苓. "Use of restlessness patterns on the study of Black-faced Bunting migratory." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/32655085607074143343.

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碩士<br>國立屏東科技大學<br>野生動物保育研究所<br>100<br>In this study, I used stable hydrogen isotope (δDf) to survey migratory restlessness (Zugunruhe) of black-faced buntings (Emveriza spidocephala) and explore their migration pattern. Total of 33 black-faced buntings were bought or captured in this research, the breeding sites of black-faced buntings obtained by examining stable hydrogen isotope (δDf) of their feathers. This research was executed from February to December, 2011. Results revealed that the distance from breeding sites was related to migratory restlessness and the date of migratory restlessness

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Chang, Suo-Shiuan, and 張碩軒. "Study on Morphological and Migratory Patterns of Gray-cheeked Fulvetta in Peitawushan." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/33568654689075373328.

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碩士<br>國立屏東科技大學<br>野生動物保育研究所<br>99<br>This study combined the work of banding with stable hydrogen isotope analysis and DNA sexual detection. The purposes were to examine the altitudinal distribution of Gray-cheeked Fulvetta’s (Alcippe morrisonia) breeding area, migration direction in different seasons, differential migration between sexes and the relationships between the bird’s body measurements and altitude and season in Peitawushan. To obtain the data of the species’ body measurements and the rectrix and blood samples for analysis from Septemper 2009 to February 2010. Results showed that he

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Gutierrez, Shaheen. "The archaeology of settlement and migratory patterns of the Fur tribe in Darfur, Sudan /." 2008. http://minds.wisconsin.edu/handle/1793/36635.

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Funnell, Julie. "A comparison of annual patterns of behaviour and physiology between partially migratory and non-migratory subspecies of the Australian silvereye zosterops lateralis, in captivity." Thesis, 2007. http://hdl.handle.net/10453/44034.

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University of Technology, Sydney. Faculty of Science.<br>NO FULL TEXT AVAILABLE. Access is restricted indefinitely. The hardcopy may be available for consultation at the UTS Library.<br>NO FULL TEXT AVAILABLE. Access is restricted indefinitely. ----- This study recorded and compared the behaviour and physiology of the partially migratory Tasmanian subspecies, Zosterops lateralis lateralis, and the sedentary mainland subspecies, Zosterops lateralis familiaris, of the Australian silvereye over an extended period in captivity. Tasmanian birds were held in captivity for a total of 17.5 months,

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Yuan, Ying-Ching, and 袁瀠晴. "Migratory patterns and trophic niche of flying fish Hirundichthys oxycephalus inferred by stable isotope composition." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/51354643066941534677.

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碩士<br>國立臺灣大學<br>海洋研究所<br>102<br>Flying &;#64257;shes (Exocoetidae) distribute worldwide in tropical and sub-tropical waters. In the pelagic food web, flying fish serve as a low trophic-level consumer feeding mainly on zooplankton. The eggs of Hirundichthys oxycephalus are harvested off northeastern Taiwan between April and July and adult fish are the major targeted species off the southeastern coast of Taiwan between March and June. In this study, we analyzed the otolith stable oxygen and carbon isotopic composition of the flying fish (Hirundichthys oxycephalus) collected from the coastal wate

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Hewitt, David Allen. "Abundance and migratory patterns of anadromous fish spawning runs in the Roanoke River, North Carolina." 2003. http://www.lib.ncsu.edu/theses/available/etd-03272003-110542/unrestricted/etd.pdf.

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Costa, Joana Sofia dos Santos. "Breeding ecology and migration patterns of an afro-palearctic migratory insectivorous bird, the Bee-eater (Merops Apiaster)." Doctoral thesis, 2020. http://hdl.handle.net/10773/30178.

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Important habitats crucial to animal reproduction and survival are being transformed at an increasing rate and at the same time, climate change is altering ecological patterns in both time and space. Migratory species are currently experiencing severe declines as they move within a network of interconnected areas that are often undergoing different rates of change. Understanding the factors that influence population dynamics in migratory species therefore requires not only knowledge on breeding ecology and drivers of breeding success, but also on how events during one period of the annual cycl

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HOU, NICHOLAS YUE. "Effects of Heatshock on the Na+/K+-ATPase in Locusta migratoria." Thesis, 2011. http://hdl.handle.net/1974/6759.

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Most vertebrates suffer permanent damage after minutes of anoxia. Many insects however, have part of their life cycle in anoxia or constant hypoxia, such as during their egg-hatching phase, by living as deep burrowers, or at high altitudes. Insects are able to survive in anoxia from hours to days, or even months by developing various strategies through evolution. For example, the locusts (Locusta migratoria) enter a reversible coma during anoxia that is associated with an arrest of ventilation, and a reinitiation of ventilation when returned to normoxia. This coma is correlated with a surge in

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林惠珊. "Using Stable Hydrogen Isotope to Study Autumn Migratory Patterns of Siberian Rubythroat at Kaoping River, Taiwan and in Guangzhou, China." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/22849482863294592544.

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