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Dissertations / Theses on the topic 'Habitat specialist'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Galindo, Leal Carlos. "Effects of habitat and food on demographic classes and population dynamics of a habitat specialist, the rock mouse." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30839.

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I examined the relations between habitat structure, population variability and patterns of microhabitat use by demographic classes (sex, age, residency) in the rock mouse in southern Durango, Mexico. I also examined individual and population responses to experimental changes in food abundance, and the consequences for the prevalence of botfly parasitism. I used a gradient of habitats in manzanita-oak shrubland to analyze demographic variability and microhabitat use patterns. If demographic parameters of habitat specialists are closely associated with habitat structure, I expected populations

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2

Schroeder, Bradley John. "EFFECTS OF LANDSCAPE STRUCTURE ON GENERALIST AND SPECIALIST INSECT HERBIVORES." Miami University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=miami1196180149.

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3

Rus, Adrian. "Movement patterns and spatio-temporal use of patches by a specialist herbivore, the koala, in a fragmented agricultural landscape." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/23657.

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Understanding how animals use their habitat is an important part of ecology because it links an individual’s life history with movement and resource exploitation. Animals have to move in some form or another to satisfy their energetic and reproductive needs, which is essential for fitness and survival. The patchy distribution of resources (i.e. food, shelter, mates) within heterogenous landscapes has a strong influence on animal movement. By analysing movement patterns of individuals, we can get a better understanding of the factors influencing the spatio-temporal use of patches. Habitat fragm

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4

Connell, Kristin Anne. "Factors influencing the spatial distribution and ecological interactions of a habitat specialist, the semi-aquatic water rat (Hydromys chrysogaster)." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/16266.

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Semi-aquatic mammals, such as the native Australian water rat (Hydromys chrysogaster), are habitat specialists, often requiring additional adaptations to their environment compared to generalists. While the water rat is widely distributed, it is a species about which we know little. To increase our fundamental ecological and evolutionary knowledge about this species, my research focused on four key areas. First, I examined variation of body and extremity size across its geographical distribution, and found size was curvilinearly related to latitude, consistent with the abundant centre hypothes

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5

Henshall, Sarah Elizabeth. "The influence of exposed riverine sediment (ERS) physical habitat dynamics and river flow in determining the distributions of specialist ERS invertebrates." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/1585/.

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Exposed Riverine Sediments (ERS) are highly dynamic habitats that support large numbers of rare and scarce invertebrates. ERS are characterised by a high diversity of microhabitats and microclimates. The thesis aimed to assess ERS habitats at a micro, patch and reach scale addressing three broad aims (1) to characterise the nature and dynamics of ERS microhabitat through investigating the thermal characteristics of ERS with respect to sediment calibre, depth and distance from the water‟s edge, and so identify the key factors that control variations in surface and subsurface physical habitat sp

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6

Lindgren, Jessica. "Small remnant habitats : Important structures in fragmented landscapes." Doctoral thesis, Stockholms universitet, Institutionen för naturgeografi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-148653.

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The world-wide intensification of agriculture has led to a decline in species richness due to land use change, isolation, and fragmentation of natural and semi-natural habitats in agricultural and forestry landscapes. As a consequence, there is a current landscape management focus on the importance of green infrastructure to mitigate biodiversity decline and preserve ecosystem functions e.g. pollination services and pest control. Even though intensification in agriculture has been ongoing for several hundreds of years, remnant habitats from earlier management practices may still be remaining w

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7

Finger, Nikita Maxine. "Habitat correlates of pulse parameters in the highly specialised acoustic system of Chiroptera." Doctoral thesis, Faculty of Science, 2021. http://hdl.handle.net/11427/33663.

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High Duty Cycle echolocating bats use high frequency echolocation pulses that have limited range but are clutter resistant i.e. can detect targets in dense clutter (the number of echoes produced other than those from the target of interest). A specialised echolocation pulse design (consisting of a constant frequency and frequency modulated components) facilitates foraging for prey in habitats characterised by dense vegetation or clutter. The constant frequency component, along with an acoustic fovea and Doppler Shift Compensation, allows them to distinguish small moving targets from stationary

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8

Wallin, Jakob. "Plant-pollinator networks in three habitats on a baltic island." Thesis, Högskolan på Gotland, Institutionen för kultur, energi och miljö, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hgo:diva-1009.

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Plant-pollinator networks have shown to be highly dynamic systems as species and interactions change in time and space. Few studies have incorporated several habitats in their network. In this work I investigate interacting plant and pollinator communities of three adjacent habitats at Gotska Sandön, an island in the Baltic Sea. The networks varied in size between the habitats, and the larger networks of the dune and meadow displayed both nested and modular structure while the smaller forest network was more randomly organised. We found species present in more than one habitat that connected t

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9

Carbone, Alexa. "How Nutrition Knowledge of Coaches, Athletic Trainers, and Strength and Conditioning Specialists Translates to Their Athletes." Digital Commons @ East Tennessee State University, 2021. https://dc.etsu.edu/etd/3868.

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The basis of dietary habits is linked to an individuals’ nutrition knowledge; for collegiate athletes this is the difference between optimal performance and falling short. To understand how nutrition information is disseminated to student-athletes, this research surveyed the athletes themselves and their sports staff (coaches, athletic trainers, and strength and conditioning specialists) on their current knowledge. Sport staff and student-athletes at East Tennessee State University were given the opportunity to participate in a 52-question online survey that tested both their general and sport

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10

Dias, Rafael Antunes. "Padrões de diversidade em comunidades de aves relacionadaos a varáveis de habitat em campos temperados do sudeste da América do Sul." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/72388.

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Indivíduos, populações e espécies tendem a usar e selecionar habitats de modo não-aleatório. Consequentemente, a perda e a degradação de habitats geram impactos distintos sobre os organismos dependendo de seus atributos. Os efeitos da perda de habitat são claros – os organismos são eliminados ou desalojados por falta de habitat ou baixo sucesso reprodutivo. As consequências da degradação de habitat são mais sutis, e resultam na incapacidade de um ecossistema sustentar determinadas espécies. Como a perda e a degradação de habitat reduzem a disponibilidade de nichos, espera-se que táxons ecologi

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11

Hoffsten, Per-Ola. "Rarity in boreal stream insects : patterns, causes and consequences /." Doctoral thesis, Umeå University, Ecology and Environmental Science, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-142.

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<p>Patterns of site occupancy among boreal stream insects were studied in central Sweden with focus on sparsely distributed species and the role of dispersal and niche limitations.</p><p>In the study of dispersal limitation, I found that effects of an extraordinarily harsh winter in small to medium-sized streams were strongest in sites located in small streams and far from lake outlets. Species richness and the total abundance of macroinvertebrates and trout returned to pre-disturbance levels after three years. However, some species showed slow recolonization and the proportion of holoaquatic

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12

Lehosmaa, K. (Kaisa). "Anthropogenic impacts and restoration of boreal spring ecosystems." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526218533.

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Abstract Human activities have increasingly altered freshwater ecosystems. Land use is a major driver of habitat loss and land use-related input of nutrients and other pollutants from agriculture, forestry and urbanization have deteriorated water quality. Freshwater research has mainly focused on lakes and streams while the effects of anthropogenic stressors on groundwater-dependent ecosystems (GDEs) are poorly known. Likewise, the effectiveness of ecological restoration in mitigating human disturbance in GDEs remains understudied. In this thesis, I studied the effects of two main anthropogeni

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13

Nardone, Valentina. "Ecology and Phylogeography of the Riparian Habitat Specialist M. daubentonii." Tesi di dottorato, 2015. http://www.fedoa.unina.it/10143/1/Tesi%20NardoneV.pdf.

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Riparian ecosystems are known as habitats with high biodiversity levels which perform several ecological functions. The importance of riparian habitats for foraging and commuting of many bats species was observed in different geographic areas. Bats are highly vulnerable to habitat changes, in addition specialist taxa are more sensitive to small-scale environmental alterations. Myotis daubentonii constitutes an interesting model species widespread in Europe as riparian specialist. The objectives of this thesis were to study the effects of an altitudinal gradient on ecology and thermal physiolog

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14

Leavitt, Daniel 1979. "Ecological Consequences of Landscape Fragmentation on the Lizard Community in the Mescalero-Monahans Shinnery Sands." Thesis, 2012. http://hdl.handle.net/1969.1/148128.

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Landscape fragmentation poses a major threat to biodiversity world-wide. The goal of my dissertation research was to determine the effects of landscape fragmentation on a lizard community in the Mescalero-Monahans shinnery sands, New Mexico and the extent to which conservation efforts might protect biodiversity in this ecosystem. My research relied heavily on data collected from a large-scale spatially-replicated comparative study. The purpose of this study was to evaluate the impacts of landscape fragmentation as a result of oil and gas development on the dunes sagebrush lizard (Sceloporus

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15

Skroblin, Anja. "Phylogeography and conservation biology of the Purple-crowned Fairy-wren, Malurus coronatus." Phd thesis, 2012. http://hdl.handle.net/1885/9466.

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The purple-crowned fairy-wren (Malurus coronatus) is a declining passerine that is restricted to the dense patches of vegetation that grow along waterways in the wet-dry tropics of northern Australia. The species is threatened by ongoing degradation of riparian habitat caused by the grazing and trampling of introduced herbivores, intense fires and weed incursion. Although the western subspecies (Malurus coronatus coronatus) has been listed as endangered, conservation has been hampered by poor information regarding its distribution and what factors influence its fine-scale occurrence. This thes

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16

Edwards, Anthony Scott. "Subjectivities of the Future: The Role of Habitus, Experience, and Knowledge in Positioning School Students in the Present and Their Imagined Futures." Thesis, 2018. https://vuir.vu.edu.au/39488/.

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Australian education policy in the 21st century has given rise to the provision of programs that seek to enhance participation and learning outcomes for disadvantaged or underrepresented groups in education. This study aimed to determine what university–school “bridging activities” offer to the agency of young people with regard to their developing imagined futures. This thesis draws on the work of Bourdieu,G.H.Mead, and Habermas to position its critical analysis of the subjectivity of young people as they construct their future possibilities. Qualitative data were gathered from active engag

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17

Normann, Claudia. "Interacting effects of forest edge, tree diversity and forest stratum on the diversity of plants and arthropods in Germany’s largest deciduous forest." Doctoral thesis, 2015. http://hdl.handle.net/11858/00-1735-0000-0028-873D-E.

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Die fortschreitende Fragmentierung von Wäldern ist eine der Hauptursachen für den Verlust von Biodiversität weltweit. Mit zunehmender Fragmentierung steigt der Anteil an Waldrandzonen, in denen die Eigenschaften eines Waldes stark verändert sein können. Wie stark diese Randeffekte ein Fragment beeinflussen, kann von der Habitatstruktur abhängen. Die Habitatstruktur ist wiederum maßgeblich durch die Baumartenzusammensetzung beeinflusst. Die vorliegende Arbeit untersucht zum ersten Mal gleichzeitig die Einflüsse von Randeffekten und Baumartenvielfalt und deren mögliche Interaktionen auf Krautsc

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18

Schiele, Helen. "A narrative inquiry into the experiences of a leadership group working towards collective efficacy in a regional faith-based school." Thesis, 2021. https://vuir.vu.edu.au/42976/.

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The narration of the inquiry is an actual account of a leadership’s way of knowing their world and their relationship to, and within it. Inviting current educational and self-nominated theories to be deconstructed and reconstructed via their internal contexts required for their educational partnerships. Highlighting how issues of power and spiritual representation are central in the pedagogical shift, from self to collective efficacy which informs the educational practices as seen within a faith-based regional school. The work framed within a narrative methodology combined with an insider rese

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