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Dissertations / Theses on the topic 'Habitat loss and fragmentation'

Author: Grafiati

Published: 7 June 2025

Last updated: 16 July 2025

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1

Hatfield, Jack Henry. "The impacts of habitat loss and fragmentation upon the maintenance of biodiversity in tropical ecosystems." Thesis, Imperial College London, 2018. http://hdl.handle.net/10044/1/63830.

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Habitat loss and fragmentation are major threats to biodiversity on a global scale. Human modified landscapes now comprise large areas of the globe, heavily contributing to the observed decline in biodiversity. By understanding the processes governing species communities in these fragmented landscapes we may be better able to manage them in a way that provides conservation benefits. The first part of this thesis focuses on dispersal in complex landscapes with Chapter 2 taking a regional view, examining connectivity across the whole Brazilian Atlantic Forest from a functional perspective and Ch

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2

Matthews, Thomas James. "Analysing and modelling the impact of habitat fragmentation on species diversity : a macroecological perspective." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:1d71c6fe-06eb-4135-bdb3-874bb273bcb1.

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The destruction and fragmentation of natural habitat is the leading driver of the current extinction crisis. As a result, a research area has emerged focused on studying ecology in islands of natural habitat surrounded by a sea of anthropogenic land uses, so called ‘habitat islands’. However, this research has largely been undertaken on small-medium scales, generally in single systems. Furthermore, many habitat island studies have used previous results and theory derived in the context of oceanic island research. Thus, this thesis aims to examine a variety of macroecological and biogeographica

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3

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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4

Rielly, Elizabeth Wheeler. "Spatial variation drives patterns of community composition and trophic relationships in a marine system." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/345225.

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Biology<br>Ph.D.<br>Examining how ecological processes are influenced by spatial variation can provide valuable insights into how communities are formed and how they may change in dynamic landscapes. In this thesis I address three objectives surrounding the spatial and temporal variation in species’ recruitment and predation, the influence of habitat isolation on consumer-resource relationships, and the influence of habitat fragmentation on a multi-trophic system. I used marine invertebrates, specifically crustaceans, bivalves, and sessile species as a model system. First, I address the spatia

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Xie, Yujing, and 谢玉静. "Habitat loss and fragmentation under urbanization: the spatio-temporal dynamics of causes, processes andconsequences at landscape level." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B50662302.

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Landscape modification, especially those human-dominated changes, has been widely considered as one of the key drivers inducing the degradation of environment and ecosystem. The consequent habitat loss and fragmentation, which are closely related to ecological process, have attracted much scholarly attention. However, very few studies have systematically examined their causes and consequences at the landscape level. Integrating human activities into consideration in a holistic way remains poorly understood in particular. This thesis reports a systematic study of habitat loss and fragmentation

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Edgel, Robert John. "Habitat Selection and Response to Disturbance by Pygmy Rabbits in Utah." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3928.

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The pygmy rabbit (Brachylagus idahoensis) is a sagebrush (Artemisia sp.) obligate that depends on sagebrush habitats for food and cover throughout its life cycle. Invasive species, frequent fires, overgrazing, conversion of land to agriculture, energy development, and many other factors have contributed to recent declines in both quantity and quality of sagebrush-steppe habitats required by pygmy rabbits. Because of the many threats to these habitats and the believed decline of pygmy rabbit populations, there is a need to further understand habitat requirements for this species and how they re

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Poor, Erin Elizabeth. "A multiscale analysis and quantification of human impacts on Sumatran tiger (Panthera tigris sumatrae) habitat in Riau, Sumatra." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/85130.

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Worldwide, we are losing biodiversity at unprecedented rates, and due to deforestation, degradation and poaching, Southeast Asian wildlife is facing extreme threats. Indonesia recently eclipsed Brazil in having the world's highest deforestation rate, largely due to the rise of the palm oil industry. Indonesia contains multiple biodiversity hotspots and endangered species such as the Sumatran tiger (Panthera tigris sumatrae). While Riau Province, Sumatra, produces approximately 20% of the world's palm oil, tigers still inhabit parts of Riau, though their habitat and prey are understudied. Thus,

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8

Hutchison, Melissa Alice Sarah. "Interactions between habitat fragmentation and invasions: factors driving exotic plant invasions in native forest remnants, West Coast, New Zealand." Thesis, University of Canterbury. School of Biological Sciences, 2009. http://hdl.handle.net/10092/3218.

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Habitat fragmentation and biological invasions are widely considered to be the most significant threats to global biodiversity, and synergistic interactions between these processes have the potential to cause even greater biodiversity loss than either acting alone. The objective of my study was to investigate the effects of fragmentation on plant communities in native forest fragments, and to examine potential interactions between these effects and invasions by exotic plants at multiple spatial scales. I examined edge, area and landscape effects on plant invasions using empirical data from fra

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9

Zanirato, Gisele Lamberti [UNESP]. "A influência da perda e da fragmentação do habitat sobre a ocupação e o padrão de atividade do tamanduá-bandeira (Myrmecophaga tridactyla)." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151071.

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Eklöf, Anna. "Species extinctions in food webs : local and regional processes." Doctoral thesis, Linköpings universitet, Teoretisk Biologi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-51815.

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Loss of biodiversity is one of the most severe threats to the ecosystems of the world. The major causes behind the high population and species extinction rates are anthropogenic activities such as overharvesting of natural populations, pollution, climate change and destruction and fragmentation of natural habitats. There is an urgent need of understanding how these species losses affect the ecological structure and functioning of our ecosystems. Ecological communities exist in a landscape but the spatial aspects of community dynamics have until recently to large extent been ignored. However, t

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Le, Moine Rebecka. "The land use cover changes from 1992 to 2011 in Karbi Anglong, Assam, India." Thesis, Linköpings universitet, Ekologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-79347.

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With an increased human impact, natural resources are under great pressure. Deforestation is one effect of this, and the largest threat against biodiversity.. Changes in tropical habitats is a major concern for conservation biologists, due to its high biodiversity and rapid decreased area. Recently, developmental activities and habitat destruction have caused a major decline in the abundance of the terrestrial mega-fauna.This is especially evident in areas with a high human population and a rich mega-fauna as in India. The purpose of this project was to determine the land-use cover change (LU

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Donaldson, Lynda. "Conservation and ecology of wetland birds in Africa." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/31812.

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Conservation managers worldwide are increasingly faced with the challenges of managing and protecting fragmented landscapes, largely as a consequence of human activities. Over recent decades, ecological theory has made a significant contribution to the development of landscape-scale conservation and practice. However, recommendations accounting for what is practically achievable in the modern-day landscape are currently lacking, while criteria for conservation planning and prioritisation continue to neglect the role of habitat networks at the required spatial scale for the long-term persistenc

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Gregorini, Marina Zanin. "Efeitos da perda e fragmentação de habitat sobre felinos: ecologia e genética de paisagem como ferramentas para a conservação." Universidade Federal de Goiás, 2014. http://repositorio.bc.ufg.br/tede/handle/tede/3462.

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Janin, Agnès. "Évaluer la connectivité en paysage fragmenté : de l'écologie comportementale à la biologie de la conservation." Phd thesis, Université Claude Bernard - Lyon I, 2011. http://tel.archives-ouvertes.fr/tel-00937294.

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Dans les paysages fragmentés, les mouvements entre les patchs d'habitats jouent un rôle primordial dans la persistance des populations en assurant les flux génétiques, la possibilité de recolonisation après extinction locale, la liaison entre différents habitats pour la reproduction ou l'acquisition des ressources, ... Malgré l'importance de ces mouvements, la structure du paysage entre ces patchs (i.e. la matrice) est le plus souvent considérée comme un ensemble homogène de non-habitat d'intérêt mineur et les adaptations comportementales en réponse à la fragmentation du paysage sont rarement

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Carvalho, Carolina da Silva. "O papel da estrutura da paisagem na variabilidade genética da palmeira Euterpe edulis na Mata Atlântica." Universidade Federal de Goiás, 2013. http://repositorio.bc.ufg.br/tede/handle/tede/3770.

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Sennblad, Adina. "Effects of past fragmentation and habitat loss and current management methods on the changes in vascular plant communities. : An evaluation of extinction debt in semi-natural grasslands in Sweden." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447366.

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Habitat loss and fragmentation are believed to be two of the main reasons for high extinction rates of species, resulting in decreased biodiversity. According to the island biogeography theory, the species richness in a patch, here a semi-natural grassland, is dependent on the landscape composition, and therefore changes in the landscape composition will result in changes in the species richness of the grassland. However, this change in species richness may be delayed for several years, causing an extinction debt. The aim of this study was to examine the change of species richness of vascular

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Martins, Thais Kubik. "Determinantes ecológicos do risco de extinção: abundância local, amplitude de nicho, capacidade de dispersão e a resposta das espécies de pequenos mamíferos à fragmentação florestal no Planalto Atlântico Paulista." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/41/41133/tde-19042012-101419/.

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Alterações antrópicas nos ecossistemas, em especial a perda e a fragmentação de habitat, são consideradas as principais causas do grande aumento nas extinções de espécies nas últimas décadas. Uma vez que o risco de extinção varia grandemente entre as espécies, os determinantes ecológicos associados à chance de extinção têm sido um tema central e muito debatido na literatura ecológica. Atributos ecológicos relacionados à raridade, como amplitude de nicho e abundância local, e a capacidade de dispersão são recorrentemente citados na literatura como determinantes do risco de extinção local. A par

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Camilotti, Vagner Luis. "Influência da estrutura espacial e da vegetação sobre a assembléia de aves em remanescentes campestres no sul do Brasil." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/25149.

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Esse estudo teve como objetivo investigar os fatores estruturantes das taxocenoses de aves que utilizam remanescentes de vegetação campestre na região da Fronteira Oeste do Rio Grande do Sul. Através desse estudo busquei compreender os efeitos da estrutura espacial dos remanescentes (área, formato e proximidade entre remanescentes) e também os efeitos exercidos pela estrutura do habitat no uso desses pelas aves campestres. Amostrei quantitativamente por pontos de contagem a avifauna em 21 manchas de vegetação campestre com diferentes áreas, formas e estrutura da vegetação. Utilizei ferramentas

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Silva, Daniel de Paiva. "Considerações sobre a biodiversidade de abelhas brasileiras: vícios de coleta, distribuições potenciais e fragmentação." Universidade Federal de Goiás, 2014. http://repositorio.bc.ufg.br/tede/handle/tede/7369.

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Silva, Gabriela Bueno Bittencourt. "Comunidades de Anf?bios Anuros Insulares do Litoral Sudeste do Brasil: Composi??o Taxon?mica e Rela??es com a Hist?ria de Forma??o das Ilhas." Universidade Federal Rural do Rio de Janeiro, 2011. https://tede.ufrrj.br/jspui/handle/jspui/1150.

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Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-08-03T11:52:14Z No. of bitstreams: 1 2011 - Gabriela Bueno B. Silva.pdf: 16499028 bytes, checksum: f77bf195f420f4227c29b60a75895d0d (MD5)<br>Made available in DSpace on 2016-08-03T11:52:14Z (GMT). No. of bitstreams: 1 2011 - Gabriela Bueno B. Silva.pdf: 16499028 bytes, checksum: f77bf195f420f4227c29b60a75895d0d (MD5) Previous issue date: 2011-04-15<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil.<br>BITTENCOURT-SILVA, Gabriela Bueno. Insular Anuran (Amphibia) Communities of the Southeast Coast of Brazil:

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Bailey, Sallie-Anne. "Habitat fragmentation in England's ancient woods." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297747.

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Larivière, Serge Jacques. "Habitat fragmentation, striped skunks, and waterfowl nest predation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27417.pdf.

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23

Loraamm, Rebecca Whitehead. "Road-based Landscape Metrics for Quantifying Habitat Fragmentation." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3214.

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Landscape metrics measure the composition and configuration of habitats within landscapes; often the goal is to measure fragmentation. While a variety of existing metrics characterize the connectivity and contiguity of habitat patches, most do not explicitly consider the fragmenting effects of roads in their formulations. This research develops a set of new landscape metrics that explicitly quantify how roads disconnect and break apart habitat patches. This research introduces the following four metrics to consider the fragmenting effects of transportation networks: (1) Number of Connected Pat

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Clarke, Matthew John. "The effect of habitat fragmentation on ecosystem processes." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364922.

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25

Gonzalez, Andrew. "Extinction : the role of habitat fragmentation and environmental variability." Thesis, Imperial College London, 1998. http://hdl.handle.net/10044/1/12032.

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Battocletti, Amy. "The Population and Ecological Genetic Effects of Habitat Fragmentation." Thesis, Georgetown University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10273271.

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<p> Maintaining intraspecific variation is important for populations’ long-term success and is increasingly being recognized as an important conservation goal. Populations in anthropogenically fragmented habitats may lose variation rapidly via genetic drift, particularly in small fragments with a high ratio of edge to interior habitat. We studied the population and ecological genetic effects of habitat fragmentation on both a foundation plant, <i>Spartina patens,</i> and a dependent herbivore, <i>Tumidagena minuta,</i> using a naturally fragmented, salt marsh model system. We employed mi

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Harwell, Heather D. "Landscape aspects of oyster reefs : fragmentation and habitat utilization /." Electronic version (PDF), 2004. http://dl.uncw.edu/etd/2004/harwellh/heatherharwell.pdf.

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Michalski, Fernanda. "Ecological consequences of habitat fragmentation and disturbance in Amazonian forests." Thesis, University of East Anglia, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432441.

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Phillips, Helen Rachel Patricia. "Effects of land use and habitat fragmentation on local biodiversity." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/58205.

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Land use change is one of the greatest threats to biodiversity. Land-use change often results in fragmentation of the landscape, yet this aspect is rarely taken into account in models of how land use affects biodiversity. Additionally, previous biodiversity models have been restricted to large spatial scales, which may not be applicable for conservation practitioners. In this thesis I analyse datasets collated from multiple published studies of how local terrestrial biodiversity responds to human impacts. I start Chapter 2) by modelling how land use, specifically secondary vegetation and plant

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Greenwald, Katherine Rose. "Habitat fragmentation, functional landscape connectivity, and metapopulation processes in amphibians." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1243366608.

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Greenwald, Katherine R. "Habitat fragmentation, functional landscape connectivity, and metapopulation processes in amphibians." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1243366608.

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Herrando, Vila Sergi. "Habitat disturbance in Mediterranean landscapes:Effects of fire and fragmentation on birds." Doctoral thesis, Universitat de Barcelona, 2001. http://hdl.handle.net/10803/773.

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The main objective of this thesis is to analyse how fire and fragmentation in Mediterranean habitats affect birds. Each chapter of this work poses questions and hypothesises about the ecological responses of birds to these disturbances. At present, the relationship between avian communities and habitat changes is one of the main areas of interest with respect to bird conservation (Tucker & Evans 1997). Therefore, whenever findings are considered relevant for conservation, special attention has been taken to show the contributions of this research to wildlife management.

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Whiteley, Jonathan. "Climate change and habitat fragmentation in a boreal forest bryosphere experiment." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114398.

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Climate change encompasses not only global changes in temperature, but also changes in precipitation, variability, and large-scale shifts in conditions to higher latitudes and altitudes. Many species respond by following suitable environmental conditions to new locations, but the necessary dispersal may not be possible on landscapes fragmented by anthropogenic land-use. This non-additive interaction is poorly understood, particularly in the boreal forest, whose extensive circumpolar distribution and large pool of soil carbon have the potential to feedback to global climate. These forests t

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Winter, Maiken. "Effect of habitat fragmentation on grassland-nesting birds in southwestern Missouri /." free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9924945.

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Hovel, Kevin. "The effect of seagrass habitat fragmentation on juvenile blue crab survival." W&M ScholarWorks, 1999. https://scholarworks.wm.edu/etd/1539616700.

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Habitat fragmentation leads to small, isolated habitat patches in which ecological processes may differ substantially from those in larger, continuous habitats. Seagrass is a structurally complex but fragmented subtidal habitat that serves as a refuge from predation for juveniles of the blue crab, Callinectes sapidus Rathbun. I compared the effects of eelgrass ( Zostera marina L.) patch size and shoot density on juvenile blue crab survival both before (June) and after (September) shoot defoliation and cownose ray disturbance changed eelgrass habitat, and used artificial seagrass to determine

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Didham, Raphael K. "The effects of forest fragmentation on leaf-litter invertebrates in Central Amazonia." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299511.

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Gottardi, Elisa. "Landscape openness effect on roe deer, Capreolus capreolus, behavior : analysis on activity level, movement rate and circadian rhythm across a landscape gradient." Toulouse 3, 2011. http://www.theses.fr/2011TOU30048.

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Le sujet de cette thèse porte sur l'analyse de l'activité et des déplacements d'une population de chevreuils dans un agro-écosystème du sud-ouest de la France. Nous analysons ici l'effet de la structure du paysage sur le comportement animal en étudiant les niveaux d'activité diurne et nocturne et les mouvements des chevreuils, mais aussi en observant la tendance générale du rythme circadien le long d'un gradient de paysage allant d'un habitat forestier fermé jusqu'au milieu agricole ouvert. Nous avons constaté que la structure du paysage a une influence sur le comportement des chevreuils mais

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Lewis, Alexandra J. G. "Spatial distribution and movement of the common shrew (Sorex araneus) and the pygmy shrew (Sorex minutus) in a heterogeneous landscape." Thesis, University of York, 1999. http://etheses.whiterose.ac.uk/9793/.

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Flesch, Aaron D. "Influence of local and landscape factors on distributional dynamics: a species-centred, fitness-based approach." ROYAL SOC, 2017. http://hdl.handle.net/10150/626020.

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In spatially structured populations, distributional dynamics are driven by the quantity, connectivity and quality of habitat. Because these drivers are rarely measured directly and simultaneously at relevant scales, information on their relative importance remains unclear. I assessed the influence of both direct and indirect measures of local habitat quality, and of landscape habitat amount and connectivity on long-term territory occupancy dynamics of non-migratory pygmy owls. Direct measures of local habitat quality based on territory-specific reproductive output had greater effects on distri

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De, Souza Maira. "Predicting biodiversity loss in insular neotropical forest habitat patches." Thesis, University of East Anglia, 2014. https://ueaeprints.uea.ac.uk/52054/.

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Neotropical forests have experienced high rates of biodiversity loss as a result of burgeoning land-use changes. Habitat conversion into cropland, pastures, and more recently hydroelectric lakes, are leading drivers of forest loss and fragmentation of pristine forests in the world’s most biodiverse region. This thesis aims to improve our understanding of the impacts of habitat fragmentation on biodiversity loss in Neotropical forests by evaluating the patterns of floristic changes and vertebrate extinctions in forest patches. Two approaches at different scales were conducted. First, a systemat

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Treby, Donna Louise. "Hollow-Bearing Trees as a Habitat Resource along an Urbanisation Gradient." Thesis, Griffith University, 2014. http://hdl.handle.net/10072/367782.

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Habitat fragmentation due to rapid urbanisation is occurring globally and results in small and often isolated patches of remnant bushland. These small, forest remnants contribute to the conservation of biodiversity within urban areas, as they can, and often do, contain suitable habitat structures. Habitat structures such as hollow-bearing trees are recognised as important features of forests globally. Therefore, the abundance of hollow-bearing trees within a landscape may be a controlling factor for many biota where no other habitat resources provide a feasible substitute. Therein, this thesis

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Klapwijk, Maartje J. "Host-parasitoid interactions in the context of climate change and habitat fragmentation." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496988.

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Curtis, Odette Elisabeth. "Responses of raptors to habitat fragmentation : from individual responses to population susceptibility." Master's thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/6727.

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Habitat fragmentation has different effects on species and communities, depending on a suite of life-history and population traits: some species are more vulnerable to the effects of fragmentation than others. Contrasting responses suggest there are particular species' attributes that make an organism more or less susceptible to the effects of fragmentation. Much research has focused on identifying which of these traits are the most useful indicators of a species' fragmentation-linked extinction risk. For example, body size, rarity, ecological specialization, matrix use, range size and turnove

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Munguia-Vega, Adrian. "Habitat Fragmentation in Small Vertebrates from the Sonoran Desert in Baja California." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/205423.

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Land conversion is one of the greatest threats to terrestrial ecosystems around the world, and understanding its impacts on the biota is crutial for the management and conservation of species in and around human-modified landscapes, particularly in those where local declines can quickly translate into the extinction of endemic species or Evolutionary Significant Units.I investigated how habitat loss and fragmentation impacted dispersal and extinction risk in three small vertebrates (a phrynosomatid lizard Urosaurus nigricaudus, and two heteromyid rodents Chaetodipus arenarius and Dipodomys sim

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Desrochers, Rachelle. "Habitat Loss and Avian Range Dynamics through Space and Time." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20374.

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The species–area relationship (SAR) has been applied to predict species richness declines as area is converted to human-dominated land covers.In many areas of the world, however, many species persist in human-dominated areas, including threatened species. Because SARs are decelerating nonlinear, small extents of natural habitat can be converted to human use with little expected loss of associated species, but with the addition of more species that are associated with human land uses. Decelerating SARs suggest that, as area is converted to human-dominated forms, more species will be added to th

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Young, Eric R. "Evaluating and monitoring habitat loss using satellite remote sensing imagery." Thesis, University of Ottawa (Canada), 2009. http://hdl.handle.net/10393/28153.

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Habitat loss is widely acknowledged as the leading cause of extinctions and is occurring at an alarming rate and affecting biodiversity globally. I measured the rate of habitat loss using satellite-based land cover change data. First, I modelled the potential suitable habitat of the Marbled Murrelet on Vancouver Island using two techniques and compared those results to in-situ field measurements. Both modelling techniques predicted declines in suitable habitat between the years, although one technique was better at predicting suitable habitat. I also compared rates of habitat loss in areas of

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Maaloum, Mohamed. "The loss of the referent : identity and fragmentation in Richard Wright's fiction." Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/62501/.

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This thesis explores forms of fragmentation that characterize black male subjectivity in Richard Wright’s fiction and considers their relationship to the demise of the social anchors and referents which are supposed to allow black men to develop as coherent and whole. It argues that the physical and psychic disfigurement and political and social marginality to which these men are consigned are a direct result of a humanist worldview imposed on them by the two main entities that define them as marginal, namely, white society and black community. To address this relationship, the thesis deploys

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Ibarra-Macias, Ana C. "Effects of Habitat Fragmentation on the Distribution and Movement of Tropical Forest Birds." Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_dissertations/481.

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Habitat loss and fragmentation occur at unprecedented rates, especially in tropical countries where human activities have deforested or degraded around 80% of tropical rainforests. Tropical forest fragmentation is considered the main cause of extinction of tropical forest avifauna, yet the mechanisms by which fragmentation affects bird populations are poorly understood. The present study investigates the pattern of bird species distribution in a fragmented landscape in tropical southeastern Mexico and the relation of bird community and species distribution patterns to landscape and fragment

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Paull, David James Physical Environmental &amp Mathematical Sciences Australian Defence Force Academy UNSW. "Habitat fragmentation and the southern brown bandicoot Isoodon obesulus at multiple spatial scales." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Physical, Environmental and Mathematical Sciences, 2003. http://handle.unsw.edu.au/1959.4/38698.

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This thesis investigates the process of habitat fragmentation and the spatial and temporal scales at which it occurs. Fragmentation has become an important topic in biogeography and conservation biology because of the impacts it has upon species??? distributions and biodiversity. Various definitions of fragmentation are available but in this research it is considered to be the disruption of continuity, either natural or human-induced in its origins and operative at multiple spatial scales. Using the distribution of the southern brown bandicoot Isoodon obesulus as a case study, three spatial sc

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Smith, Diane Marie. "Habitat fragmentation and the reproductive success of Trillium grandiflorum, Liliaceae, in southern Ontario." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ30232.pdf.

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