• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 104
  • 7
  • 7
  • 5
  • 3
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 168
  • 168
  • 168
  • 53
  • 25
  • 22
  • 22
  • 22
  • 20
  • 17
  • 16
  • 15
  • 13
  • 13
  • 13
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
151

Modelling the effect of human-caused mortality on a lion sub-population using spreadsheets

Herrmann, Eric 03 1900 (has links)
Thesis (MScFor)--University of Stellenbosch, 2004. / ENGLISH ABSTRACT: Free-ranging lions (Panthera leo) in the Kgalagadi Transfrontier Park (KTP) have been subject to persecution by farmers following livestock depredation in adjacent grazing areas. In recent years at least one adult female was killed annually from a sub-population of five boundary prides that have home ranges adjoining these livestock grazing areas. While no long-term records of human-caused mortality are available, the impact of current rates of human-caused mortality is uncertain. Female-based, age-structured models were thus used to estimate the long-term viability of the KTP lion sub-population subjected to human-caused mortality under deterministic and stochastic environmental conditions. Population parameters incorporated in the models included age-class specific natural mortality, female fecundity and birth sex ratio. In so doing sustainable threshold rates of persecution were established, so that effective conservation measures can be taken, if required, to ensure the continued survival of boundary prides in the park. Sensitivity analyses of natural survival rates indicated that adult female survivorship is the most important population parameter with respect to maintaining population viability, compared to younger female age-classes, fecundity or birth sex ratio. Hence adults were also the most sensitive age-class with respect to human-caused mortality, as adult survival repeatedly acts upon individuals with the highest reproductive value. In the deterministic model, with the most optimistic survival parameter values, fecundity and birth sex ratio (female-biased) estimates, the sub-population is only able to sustain an annual persecution of three adult females, before the sub-population exhibits a sustained decline. In the worst-case scenario, where fecundity and sex ratio estimates are at their lower extremes, the maximum sustainable age-class specific persecution rate is zero, for all age-classes. Whilst these hypothetical scenarios are unrealistic, they do highlight the extreme thresholds of potentially sustainable persecution rates. Under the most optimistic scenario using the stochastic model, the highest achievable survival probability of the sub-population, when subjected to a persecution rate of one adult annually, was 78%. Although increased fecundity and birth sex ratio biased towards females may increase the survival probability, these parameters are generally at their mean values in the long-term, and may thus not necessarily prevent a sustained population decline. The models therefore suggest that the current persecution rate of one adult annually (or 4% of the adult sub-population), appears unsustainable in the longterm. To ensure the survival of existing boundary prides and to maintain a viable subpopulation, adult lionesses should, as far as possible, be afforded protection from persecution. / AFRIKAANSE OPSOMMING: Vrylewende leeus (Panthera leo) in die Kgalagadi Oorgrenspark (KTP) is onderworpe aan vervolging deur boere as gevolg van predasie op vee in aangrensende weidingsgebiede. In onlangse jare is ten minste een volwasse wyfie uit ‘n subpopulasie van vyf troppe met loopareas wat aan die weidingsgebiede grens, jaarliks uitgewis. Geen langtermyn rekords van vrektes as gevolg van menslike oorsake is beskikbaar nie, en die impak van vrektes wat deur mense veroorsaak word, is dus onseker. Wyfie-gebaseerde, ouderdomgestruktureerde modelle is daarom gebruik om te voorspel wat die langtermyn lewensvatbaarheid is van die KTP leeu subpopulasie wat onderworpe is aan vrektes deur menslike invloede onder deterministiese en stogastiese omgewingsfaktore. Bevolkingsfaktore wat deur die modelle in ag geneem is, sluit ouderdomsgroep-spesifieke natuurlike vrektes, aanwas van wyfies en geboorte geslagsverhouding in. Sodoende is volhoubare uitwissingstempos bepaal sodat, indien nodig, effektiewe bewaringsmeganismes toegepas kan word om die voortbestaan van troppe in die grensgebiede van die park te verseker. Sensitiwiteitsanalises van natuurlike oorlewingstempos het aangetoon dat volwasse wyfies se oorlewing die belangrikste bevolkingsfaktor is om die bevolking se lewensvatbaarheid te volhou vergeleke met jonger wyfie ouderdomsgroepe, aanwas of geslagsverhouding by geboorte. Daarom was volwassenes ook die sensitiefste vir vrektes as gevolg van menslike invloede, omdat die oorlewing van volwassenes herhaaldelik inwerk op individue met die hoogste reproduktiewe waarde. In die deterministiese model met die mees optimistiese oorlewing, aanwas en geboorte verhouding (wyfie-gebasseerde) beramings, is die subpopulasie slegs in staat om ‘n jaarlikse uitwissing van drie volwasse wyfies te onderhou, voordat die sub-populasie ‘n volgehoue afname toon. In die uiterste geval waar aanwas en geslags verhouding skattings op die laagste is, is die maksimum volhoubare ouderdomsklasspesifieke beramings nul vir alle ouderdomsklasse. Terwyl hierdie hipotetiese senario’s onrealisties is, onderstreep dit die uiterste vlakke van potensiële volhoubare uitwissingstempos. Onder die mees optimistiese senario – ‘n uitwissingstempo van een volwassene jaarliks – met die gebruik van die stogastiese model, was die hoogste haalbare oorlewingswaarskynlikheid van die sub-populasie 78%. Alhoewel ‘n toename in aanwas en geboorte geslagsverhouding (met oorhelling na wyfies), ‘n toename in oorlewingswaarskynlikheid tot gevolg kan hê, is hierdie faktore oor die algemeen gemiddeld oor die langtermyn en sal dit nie noodwendig ‘n volgehoue afname in die populasie verhoed nie. Die modelle dui daarop dat die huidige uitwissingstempo van een volwassene (of 4% van die volwasse sub-populasie) op ‘n jaarlikse grondslag onvolhoubaar is oor die langtermyn. Om die oorlewing van bestaande troppe in die grensgebiede, asook ‘n lewensvatbare subpopulasie, te verseker, moet volwasse leeuwyfies so ver as moontlik teen vervolging beskerm word.
152

Roles, rights, and responsibilities in the sustainable management of red deer populations in Scotland

Witta, Lorin E. January 2018 (has links)
The aim of the project was to explore the acquisition and dissemination of knowledge amongst decision-makers involved in the management of red deer in Scotland. While research exists on the ecology of red deer habitat, no research exists that focuses on the relationship between the deer and the people responsible for their management. Therefore, this thesis is primarily qualitative research which aimed to explore the various aspects of red deer management in Scotland within the socio-ecological context in which it exists. There are numerous groups with interest in red deer management, however this research, due to scope and time restrictions, was limited to two primary groups, the individuals tasked with implementing policy and the practitioners who carry out culling. During the course of the project, under-researched topics surfaced, highlighting areas of practical and theoretical divergence between stakeholders. This thesis therefore aims to explore how differing views and perspectives of two of the key stakeholder groups – the estate-based practitioners (including stalkers, land-managers, and land-owners) and staff of governmental agencies – influence the management of red deer in Scotland. This research indicates that people with different roles hold different relationships with the deer, which affect management decisions and implementation at local, regional, and/or national level. As with other areas within conservation and wildlife management, this research indicates there is a disconnect between blanket governmental policy and site-specific needs, with a lack of inclusion of practitioner knowledge. Potential future research would include additional qualitative research to follow up some of the management issues raised by this research and formulate recommendations for changes to practice, followed by collection of quantitative data assessing the efficacy of interventions.
153

The unacknowledged family member : the role of animals in systems

Carruthers, Angeline 11 1900 (has links)
For centuries humans and animals have shared their lives. However, it is only in recent decades that the phenomenon of the human-animal bond and the possible therapeutic implications thereof has begun to be explored. Due to this exploration, many research programmes have sprung up around the world, investigating the implementation of animals as an intervention in various institutions. These programmes have produced overwhelmingly positive and encouraging results. However, the research remains sparse where the significance of a naturally occurring human-animal bond is concerned. From within an ecosystemic worldview, the relationship between humans and animals in the wider family system has not been extensively investigated. This dissertation explores such a relationship, investigating the meanings and experiences within the relationship, and how this relationship and significant systems around it impact one another. The implications and possible therapeutic nature of this type of relationship will be considered. / Psychology / M.A. (Clinical Psychology)
154

Myth and the treatment of non-human animals in classical and African cultures : a comparative study

Nyamilandu, Stephen Evance Macrester Trinta January 2015 (has links)
This dissertation of limited scope, part of a Course-work Master’s in Ancient Languages and Cultures, consists of five chapters which deal with issues relating to the perception and literary treatment of non-human animals in African and Classical traditional stories involving animal characters. The focus of the research was placed upon arguing that: human characteristics were attributed to animal creatures in the myths/traditional stories from both cultures; both cultures made attempts to explain how certain animals became domesticated and how others remained wild; mythical thinking is not a preserve of one culture, it is rather part of human nature; mythical monsters are present in both cultures and that they have always to be destroyed by man, though not easily; myths served several functions for both cultures, ranging from educational entertainment to socializing purposes, to making attempts to explain ancient man’s environment and its happenings. The study was undertaken in the hope of enabling certain recommendations to be formulated, on the basis of the findings, to effect a better and more informed strategy for teaching Classical Mythology and Classics, in general, in the Mawian/African context. / Classics and World Languages / M. A. (Specialisation in Ancient languages and culture)
155

Olhar humano, vida animal: subsídios para um estudo dos Wildlife Films

Costa Filho, Ricardo Gomes 27 June 2014 (has links)
Using an exploratory approach, this master thesis aims to provide an understanding of the issues around wildlife films as possible study objects. In the first part, this is made by examining some perspectives of the recent field of the Human-Animal Studies (HAS), which seeks to provide an interdisciplinary look at the several issues affecting the vast range of ethical, emotional, symbolic interactions between humans and nonhuman animals. The research also tries to enumerate some of the main theoretical, formal and historiographical questions on this matter with an analysis of the documentary film and wildlife film genres. In its final part, this master thesis embarks on an examination of Jacques Perrin´s Winged Migration (2001) and Luc Jacquet s March of the Penguins (2005) with the assumption that they can serve to demonstrate the importance and the complexity of animal representation in film. / Este trabalho tem como objetivo oferecer, a partir de uma perspectiva principalmente exploratória e bibliográfica, um olhar para os chamados wildlife films, ou filmes de vida selvagem, enquanto objetos de pesquisa. Esse esforço é realizado em um primeiro momento com o auxílio do recente campo de pesquisa dos Human-Animal Studies, que buscam compreender de maneira interdisciplinar as diversas problemáticas que afetam a imensa gama de interações éticas, afetivas, simbólicas entre os humanos e os animais não humanos. A pesquisa também empreende, nesse bojo, um estudo do documentário e do subgênero em questão em uma análise teórica e na descrição de um breve trajeto historiográfico. Em seguida, em um segundo momento, é realizada uma análise, ainda dentro da proposta exploratória do estudo, dos filmes Migração Alada (2001), de Jacques Perrin, e A Marcha dos Pinguins (2005), de Luc Jacquet.
156

The roles of black-backed jackals and caracals in issues of human-wildlife conflict in the Eastern Cape, South Africa / The perceived effectiveness of mesopredator control techniques and the mammalian diet of black-backed jackals in the Eastern Cape, South Africa

Murison, Megan Kate January 2015 (has links)
[Partial abstract]: Human-wildlife conflict is a widely observed phenomenon and encompasses a range of negative interactions between humans and wildlife. Depredation upon livestock and game species proves to be the prevalent form of this conflict and often results in the killing of carnivores. Within the South African context, despite intense lethal control, two sympatric mesopredators, the blackbacked jackal (Canis mesomelas) and the caracal (Caracal caracal), remain common enough to be considered a major threat to human livelihoods through depredation. Wildlife ranches and livestock farms dominate the landscape in the Eastern Cape Province. Moreover, human-predator conflict within the region is extensive as both the black-backed jackal and caracal are seen to be inimical by landowners. Understanding this conflict is essential for mitigating any potential adverse environmental reactions (i.e. range collapses or extinctions) and requires knowledge of anthropogenic, ecological and environmental factors. I interviewed 73 land owners across five municipal boundaries in the Eastern Cape to quantify perceptions of predator control methods.
157

Liminal spaces : therapeutic encounters between horses and adolescents

Terre Blanche, Stephanie 10 1900 (has links)
In this study, the intersections between Equine Assisted Psychotherapeutic interventions and adolescence are explored. Equine Assisted therapeutic work has recently gained much popularity in the field of psychology, due to many reported benefits, which include the value of the use of the horse as a tool in psychotherapy. Adolescence is acknowledged to be a difficult transitional phase, punctuated with many challenges, such as identity development. As this study is conducted by a trainee psychotherapist and researcher, the work also contains a reflexive exploration of these fields, with personal reflections regarding the researcher‟s own experience in the fields. This study is framed as a transtheoretical bricolage, which includes elements of reflexivity, heuristics, transpersonal, and phenomenological research approaches. Data was gathered from individual interviews with co-researchers, focus group interviews, personal reflections, and inclusion of non-verbal information from the horses who formed part of this study. Data analysis was done by means of a Thematic Data Analysis. The research findings reflect themes on different levels, which are: content themes, process themes, meta-reflections on the research process, and a meta-analysis of the research and individual developmental process which took place in the production of this work / Psychology / M. A. (Clinical Psychology)
158

Predators of Jwana Game Park, Botswana - a potential source of conflict with local human communities

Kokole, Morulaganyi 01 1900 (has links)
Human-wildlife conflict continues to grow as a concern across the world. The conflict is experienced in many different forms and it has become persistent on the pastoral lands that are situated closer to the boundaries of protected areas with livestock predation being the most prevalent form of conflict. The type and severity of the conflict is largely dependent on the predator involved and the efficiency of the mitigation techniques employed. In an attempt to minimise human-wildlife interactions, many countries have set aside pieces of land for biodiversity conservation and management of wildlife species. However, the majority of these protected areas are too small to meet the ecological requirements of resident medium-large predator species. This results in some species dispersing into the neighbouring unprotected land where they come into contact with domestic animals, killing them and sometimes causing injuries. These livestock attacks ultimately trigger indiscriminate killing of predators that is fuelled by economic losses that are accrued through livestock predation and communities‟ I ABSTRACT Human-wildlife conflict continues to grow as a concern across the world. The conflict is experienced in many different forms and it has become persistent on the pastoral lands that are situated closer to the boundaries of protected areas with livestock predation being the most prevalent form of conflict. The type and severity of the conflict is largely dependent on the predator involved and the efficiency of the mitigation techniques employed. In an attempt to minimise human-wildlife interactions, many countries have set aside pieces of land for biodiversity conservation and management of wildlife species. However, the majority of these protected areas are too small to meet the ecological requirements of resident medium-large predator species. This results in some species dispersing into the neighbouring unprotected land where they come into contact with domestic animals, killing them and sometimes causing injuries. These livestock attacks ultimately trigger indiscriminate killing of predators that is fuelled by economic losses that are accrued through livestock predation and communities‟ negative perceptions towards predators. Camera trapping and spoor count techniques were used to study the occupancy of medium-large predator species and their movement in and out of Jwana Game Park through the holes that occur under the park‟s perimeter fence. In addition, a questionnaire survey was conducted in the cattle posts that are situated adjacent to Jwana Game Park. Seven medium-large predator species were detected within the boundaries of the park. Occupancy estimates varied among the predator species within the different sections of the game park. Predators also exhibited movement between the park and adjacent pastoral land using holes that occurred under the park‟s boundary fence. A total of 128 active holes were recorded under the park‟s perimeter fence with the majority (62%) of the intensively used holes occurring in the south-west section of the park. A total of 185 predator images were recorded at the various holes under the boundary fence with black-backed jackal (Canis mesomelas) constituting the majority (45%) of capture events. Human wildlife conflict is common on the neighbouring farmlands and jackal was perceived to be responsible for the majority of the livestock depredation incidents of small stock (mainly goats), whereas leopard was perceived as the most problematic predator species on the commercial cattle ranches where it accounted for 63% of livestock losses. There was no association between the occupancy of predators inside the park and the use of holes that occur under the park‟s the boundary fence. Conflict mitigation techniques were not efficiently practiced by communities farming in the vicinity of the game park, which potentially contributed to increased livestock attacks. The incapability of the boundary fence to restrict animal movement could also contribute to increased unwanted predator-livestock interactions. / College of Agriculture and Environmental Sciences / M. Sc. (Environmental Science)
159

Does Gender Matter? Human Elephant Conflict in Sri Lanka: A Gendered Analysis of Human Elephant Conflict and Natural Resource Management in a Rural Sri Lankan Village

Griffin, Katherine Eileen 24 September 2015 (has links)
This study is a gendered analysis of natural resource management at the local scale of a poor rural Sri Lankan village in a conservation buffer zone. This village experiences destruction of forests and human elephant conflict. The objective of this study is to gain an in-depth knowledge of residents' use and understandings of environmental resources, and to investigate if gender helps shape these factors. This study relies on a social sustainability conceptual framework. It tracks participation of local women and men in natural resource management, and in conservation within and outside of the Bibile community. Local nongovernmental organizations focus on mitigating human elephant conflict and government policies influence particular farming practices. Unless socially and environmentally sustainable practices are developed, areas within and outside of the protected areas are not sustainable in their current state (Jayewardene 1998). Current interventions are failing to solve this problem in both rural communities and natural ecosystems, demonstrated most clearly by shrinking forest habitats and the frequency of human and elephant deaths (Bandara 2009). By broadening the analysis of natural resource management to examine possible social, economic, and political influences, my research examines how different resource management approaches might be filtered and reflected by variation in local residents' use and understanding of environmental resources. I suggest that gender, household decision-making, and equality are overlooked but potentially important aspects in the perception and implementation of natural resource management.
160

Wildlife-human conflict in Kenya : integrating wildlife conservation with human needs in the Masai Mara Region

Omondi, Paul January 1994 (has links)
No description available.

Page generated in 0.0835 seconds