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  • 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.
71

Shipping Human and Nature and Promoting Activism through Terry Bisson’s “Bears Discover Fire” : Applying an Ecocritical Lens and the Biophilia Hypothesis to Literature for Implications in the EFL-Setting

Erneland, Karl January 2020 (has links)
The planetary crisis is a factor with undoubted effects on society. Education in Sweden concerns itself with preparing students for societal life through passing on values and emphasising the need for critical thinking. Many students today engage in environmental activism with the agenda to demand change from governing bodies to mitigate climate change. To understand the process of change, additional information is needed regarding what it means to be human. This text concerns itself with environmental teaching for the EFL-setting. Through focusing on literature, and contributing to an in-depth understanding of the characters, increased awareness about what it means to be human can be achieved. By selecting the short story “Bears Discover Fire,” it is illustrated how such an understanding can be found through fictional works. This paper covers an ecocritical reading focusing on how representation, relationship, and structures detrimental for the climate figure in Terry Bisson’s story. In addition, it argues that a deeper understanding of the characters results from applying the biophilia hypothesis. The findings from the analysis of characters and the representation of nature and relationships are applied to the EFL-setting, providing examples for how teaching can be conducted to promote further activism and strengthen the relationship between students and nature.
72

Latitudinal Gradients in Body Size in Marine Tardigrades

Bartels, Paul J., Fontaneto, Diego, Roszkowska, Milena, Nelson, Diane R., Kaczmarek, Łukasz 16 March 2020 (has links)
Homeotherms and many poikilotherms display a positive relationship between body size and latitude, but this has rarely been investigated in microscopic animals. We analysed all published records of marine Tardigrada to address whether microscopic marine invertebrates have similar ecogeographical patterns to macroscopic animals. The data were analysed using spatially explicit generalized least squares models and linear models. We looked for latitudinal patterns in body size and species richness, testing for sampling bias and phylogenetic constraints. No latitudinal pattern was detected for species richness, and sampling bias was the strongest correlate of species richness. A hump-shaped increase in median body size with latitude was found, and the effect remained significant for the Northern Hemisphere but not for the Southern. The most significant effect supporting the latitudinal gradient was on minimum body size, with smaller species disappearing at higher latitudes. Our results suggest that biogeographical signals were observed for body size, albeit difficult to detect in poorly studied groups because of swamping from biased sampling effort and from low sample size. We did not find a significant correlation with the latitudinal pattern of body size and ecologically relevant net primary productivity.
73

Green communication: případová studie na outdoorové oděvní firmě Patagonia Inc. / Green communication: case study of the outdoor clothing company Patagonia Inc.

Krchová, Eva January 2019 (has links)
Tato diplomová práce, ​Byla, nebyla jedna firma, a ta se jmenovala Patagonie​, se zabývá případovou studií outdorové značky Patagonia a jejích aktivistických transmediálních obsahových projektů, s důrazem na nejaktuálnější kampaň značky: ​Zachraňte Bears Ears​. Park Bears Ears je obdobou české chráněné krajinné oblasti, jejíž status ale současný americký prezident Donald Trump nedávno neautorizovaně sebral. Zatímco se firma zabývá výrobou a prodejem kvalitního outdoorového oblečení, tak se Patagonie ve stejnou dobu také aktivně angažuje do veřejného dění. Firma informuje své zákazníky zejména o stavu životního prostředí prostřednictvím svćyh multimediálních poutavých příběhů nesoucí prvky žurnalistiky. Patagonie usiluje o podněcování veřejnosti a ostatních firem zapojovat se do občanské společnosti, změnit spotřební chování nejen zákazníků, ale i výrobců, s konec̆ným cílem udržitelné ochrany této křehké planety, kterou my všichni obýváme. Patagonie potvrzuje své altruistické odhodlání prostřednictvím svého oficiálního firemního hesla: "Jsme v businessu, abychom zachránili planetu."
74

Právní úprava ochrany mořských savců / Legal regulation of the protection of sea mammals

Makovec, Vojtěch January 2012 (has links)
The topic of this master thesis is the international legal regulation of the protection of marine mammals. The thesis concentrates primarily on the analysis of the species based international law instruments for the protection of the individual marine mammal species. This thesis is divided into six chapters. The first chapter addresses the main principles of the international environmental law, which have the biggest influence on the protection of marine mammals (biodiversity protection, precautionary principle and sustainable development). The second chapter describes the regulation of fisheries, which is closely related to the protection of marine mammals. This part deals with the historical beginning of the international regulation of fisheries, the UN Convention on the Law of the Sea, the division of the sea areas, regulation of individual fish species and the regulation of fisheries after the UNCLOS. The particular instruments of protection of individual species of marine mammals except Cetaceans are described in the third chapter (i.e. polar bears, Pinnipeds and Sirenidae). The protection of Cetaceans is analyzed in detail in the fourth chapter. The protection of whales on the ground of International Whaling Commission is accented. This chapter describes also the standpoint of the whaling countries...
75

The Effect of Early Rearing Experience on Adult Reproductive Behavior in Captive Giant Pandas and Spectacled Bears

Sun, Pei 10 December 2004 (has links)
The present study examined the relationship between early rearing experience and reproductive competence in captive adult giant pandas (Ailuropoda melanoleuca) and spectacled bears (Tremarctos ornatus). Life history information of 52 giant pandas and 34 spectacled bears were obtained from the International Studbook and by interviewing staff at institutions housing the subjects. The early rearing experience variables included duration of mother rearing, social access within 1-yr period following maternal separation, and birth origin. Correlation, Chi-square, and logistic regression analyses were used to analyze the data. Contrary to findings from studies with other animals, the results generally suggest that early rearing experience is not related to adult reproductive success in giant pandas and spectacled bears. Alternative explanation and limitation of the study were discussed; suggestions were made for future study.
76

Spatial analysis of factors influencing long-term stress and health of grizzly bears (Ursus arctos) in Alberta, Canada

Bourbonnais, Mathieu Louis 04 September 2013 (has links)
A primary focus of wildlife research is to understand how habitat conditions and human activities impact the health of wild animals. External factors, both natural and anthropogenic that impact the ability of an animal to acquire food and build energy reserves have important implications for reproductive success, avoidance of predators, and the ability to withstand disease, and periods of food scarcity. In the analyses presented here, I quantify the impacts of habitat quality and anthropogenic disturbance on indicators of health for individuals in a threatened grizzly bear population in Alberta, Canada. The first analysis relates spatial patterns of hair cortisol concentrations, a promising indicator of long-term stress in mammals, measured from 304 grizzly bears to a variety of continuous environmental variables representative of habitat quality (e.g., crown closure, landcover, and vegetation productivity), topographic conditions (e.g., elevation and terrain ruggedness), and anthropogenic disturbances (e.g., roads, forest harvest blocks, and oil and gas well-sites). Hair cortisol concentration point data were integrated with continuous variables by creating a stress surface for male and female bears using kernel density estimation validated through bootstrapping. The relationships between hair cortisol concentrations for males and females and environmental variables were quantified using random forests, and landscape scale stress levels for both genders was predicted based on observed relationships. Low female stress levels were found to correspond with regions with high levels of anthropogenic disturbance and activity. High female stress levels were associated primarily with high-elevation parks and protected areas. Conversely, low male stress levels were found to correspond with parks and protected areas and spatially limited moderate to high stress levels were found in regions with greater anthropogenic disturbance. Of particular concern for conservation is the observed relationship between low female stress and sink habitats which have high mortality rates and high energetic costs. Extending the first analysis, the second portion of this research examined the impacts of scale-specific habitat selection and relationships between biology, habitat quality, and anthropogenic disturbance on body condition in 85 grizzly bears represented using a body condition index. Habitat quality and anthropogenic variables were represented at multiple scales using isopleths of a utilization distribution calculated using kernel density estimation for each bear. Several hypotheses regarding the influence of biology, habitat quality, and anthropogenic disturbance on body condition quantified using linear mixed-effects models were evaluated at each habitat selection scale using the small sample Aikake Information Criterion. Biological factors were influential at all scales as males had higher body condition than females, and body condition increased with age for both genders. At the scale of most concentrated habitat selection, the biology and habitat quality hypothesis had the greatest support and had a positive effect on body condition. A component of biology, the influence of long-term stress, which had a negative impact on body condition, was most pronounced within the biology and habitat quality hypothesis at this scale. As the scale of habitat selection was represented more broadly, support for the biology and anthropogenic disturbance hypothesis increased. Anthropogenic variables of particular importance were distance decay to roads, density of secondary linear features, and density of forest harvest areas which had a negative relationship with body condition. Management efforts aimed to promote landscape conditions beneficial to grizzly bear health should focus on promoting habitat quality in core habitat and limiting anthropogenic disturbance within larger grizzly bear home ranges. / Graduate / 0768 / 0463 / 0478 / mathieub@uvic.ca
77

Differentiating Black Bears (Ursus americanus) and Brown Bears (U. arctos) using Linear Tooth Measurements and Identification of Ursids from Oregon Caves National Monument

Bogner, Emily 01 May 2019 (has links) (PDF)
North American black bears and brown bears can be difficult to distinguish in the fossil record due to similar dental and skeletal morphologies. Challenges identifying ursid material from Oregon Caves National Monument (ORCA) called for an accurate tool to distinguish the species. This study utilized a large database of lower tooth lengths and ratios in an attempt to differentiate black and brown bears in North America. Further, this project examined how these linear measurements differ geographically. Analysis of variance (ANOVA) found significant differences between black and brown bears from across North America for every variable studied. Stepwise discriminant analyses (DA) found lengths separated species better than ratios. When sexes were analyzed, ANOVA only found significant differences for lengths while DA found lengths and ratios could not accurately distinguish between sexes. Fossil specimens from North America, including ORCA specimens, demonstrated the utility of this study, supporting several identifications and questioning others.
78

A multi-scale assessment of spatial-temporal change in the movement ecology and habitat of a threatened Grizzly Bear (Ursus arctos) population in Alberta, Canada

Bourbonnais, Mathieu Louis 31 August 2018 (has links)
Given current rates of anthropogenic environmental change, combined with the increasing lethal and non-lethal mortality threat that human activities pose, there is a vital need to understand wildlife movement and behaviour in human-dominated landscapes to help inform conservation efforts and wildlife management. As long-term monitoring of wildlife populations using Global Positioning System (GPS) telemetry increases, there are new opportunities to quantify change in wildlife movement and behaviour. The objective of this PhD research is to develop novel methodological approaches for quantifying change in spatial-temporal patterns of wildlife movement and habitat by leveraging long time series of GPS telemetry and remotely sensed data. Analyses were focused on the habitat and movement of individuals in the threatened grizzly bear (Ursus arctos) population of Alberta, Canada, which occupies a human-dominated and heterogeneous landscape. Using methods in functional data analysis, a multivariate regionalization approach was developed that effectively summarizes complex spatial-temporal patterns associated with landscape disturbance, as well as recovery, which is often left unaccounted in studies quantifying patterns associated with disturbance. Next, the quasi-experimental framework afforded by a hunting moratorium was used to compare the influence of lethal (i.e., hunting) and non-lethal (i.e., anthropogenic disturbance) human-induced risk on antipredator behaviour of an apex predator, the grizzly bear. In support of the predation risk allocation hypothesis, male bears significantly decrease risky daytime behaviours by 122% during periods of high lethal human-induced risk. Rapid behavioural restoration occurred following the end of the hunt, characterized by diel bimodal movement patterns which may promote coexistence of large predators in human-dominated landscapes. A multi-scale approach using hierarchical Bayesian models, combined with post hoc trend tests and change point detection, was developed to test the influence of landscape disturbance and conditions on grizzly bear home range and movement selection over time. The results, representing the first longitudinal empirical analysis of grizzly bear habitat selection, revealed selection for habitat security at broad scales and for resource availability and habitat permeability at finer spatial scales, which has influenced potential landscape connectivity over time. Finally, combining approaches in movement ecology and conservation physiology, a body condition index was used to characterize how the physiological condition (i.e., internal state) of grizzly bears influences behavioral patterns due to costs and benefits associated with risk avoidance and resource acquisition. The results demonstrated individuals in poorer condition were more likely to engage in risky behaviour associated with anthropogenic disturbance, which highlights complex challenges for carnivore conservation and management of human-carnivore conflict. In summary, this dissertation contributes 1) a multivariate regionalization approach for quantifying spatial-temporal patterns of landscape disturbance and recovery applicable across diverse natural systems, 2) support for the growing theory that apex predators modify behavioural patterns to account for temporal overlap with lethal and non-lethal human-induced risk associated with humans, 3) an integrated approach for considering multi-scale spatial-temporal change in patterns of wildlife habitat selection and landscape connectivity associated with landscape change, 4) a cross-disciplinary framework for considering the impacts of the internal state on behavioural patterns and risk tolerance. / Graduate
79

Arktisk turism och skyddet av isbjörnen : En miljörättslig analys av skyddet av Svalbards isbjörnar i en tid av ökad sjöburen turism

Szanto, Imola January 2020 (has links)
One of the main attractions for tourists visiting Svalbard, Norway, are polar bears. The polar bear is a vulnerable species, dependent on sea ice to survive as this is where they hunt, wander and raise their cubs. Ship-based tourism poses a number of threats mainly due to the disturbances caused by the presence of ships, damage of critical habitats and the increasing interactions and deadly conflicts between humans and polar bears. Appropriate and effective legislation based on scientific knowledge of the impacts of ship-based tourism on polar bears is necessary to ensure sustainable tourism and environmental protection. Species protection and habitat conservation is not an issue isolated to Svalbard or the polar bears but rather just one part of the pressing global issue concerning loss of biodiversity, which is one of the greatest threats to humankind. The Convention on the Conservation of European Wildlife and Natural Habitats (Bern Convention) aims to ensure the conservation of wild flora and fauna species and their habitats. At the time of signing, the Norwegian Government excluded Svalbard from the application of the Bern Convention, ensuring that national conservation policies for Svalbard would be promoted. The Svalbard Environmental Protection Act is the main act regulating environmental protection on Svalbard, including both general principles and specific provisions regarding species and habitat protection. This paper explores the various needs of the polar bear population in Svalbard and the impacts caused by ship-based tourism. The Bern Convention’s provisions relating to the identified threats posed by ship-based tourism are examined and compared with the corresponding provisions in the Svalbard Environmental Protection Act. Moreover, this paper analyses the potential benefits that could arise from the application of the Bern Convention to the Svalbard territory. This paper concludes that the protection of the polar bears could, de jure, be strengthened by the Bern Convention, mainly due to the extensive interpretation of the types of activities that should be prohibited by signatory states. However, the Bern Convention can only be enforced by non-binding mechanisms and it is therefore unlikely that the application of the convention would lead to stronger protection of the polar bears than that which is provided by national legislation. The protection of the polar bear from threats caused by ship-based tourism would therefore, de facto, most likely not be strengthened by the application of the Bern Convention.
80

Scruffy Masculinities : A visual analysis of gay bear representations in Walter Van Beirendonck’s runways

Suman, Iulian January 2021 (has links)
Despite the vast research regarding non-conformative bodies, there is little material on the gay bear representation in fashion modeling. This thesis investigates the bear embodiment in the runway shows of Walter Van Beirendonck, respectively W&LT Autumn/Winter 1995–1996 Paradise Pleasure Productions, W&LT Autumn/Winter 1996-1997 Wonderland, Walter Van Beirendonck Spring/Summer 2010 Wonder, and Walter Van Beirendonck Spring/Summer 2011 Read My Skin. Critical visual analysis follows the gay bear symbolism in the video recordings of the runways, revealing how it challenges the fashion industry’s body standards and, in a broader frame, the dictates of hegemonic masculinity. The concepts of gender performativity and biopower provide the theoretical frame of the study, while Madison Moore’s theory of ‘fabulousness’ and José Esteban Muñoz’s understanding of ‘utopia’ lead to the articulation of performances both masculine and queer.  The findings lead to the discovery of non-dual and body-inclusive gay bear embodiments that challenge the relationship between body and dress and can extend beyond the limits of the runway.

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