Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 143 for “"Whales"”.
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Whales from space: Assessing the feasibility of using satellite imagery to monitor whales
… to detect wildlife from space, including whales. In this thesis, I aimed to further investigate the feasibility of very high resolution (VHR) satellite imagery as a tool to reliably monitor whales. The first objective was to describe, both visually and spectrally, how four morphologically …
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WHALES AND OTHER MAMMALS: ESSAYS
<p>This collection of essays seeks to examine, and comment on, the relationships in our lives: to ourselves, to family, to strangers, to the natural world around us. These essays interrogate, however inadequately, how we relate and what that relation means within the larger context of history and …
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Echolocation in wild killer whales (Orcinus orca)
Echolocation by odontocete whales has been demonstrated in captive settings many times, yet little is known about its use and function in the wild. In this thesis, I describe echolocation sounds in pods of killer whales (Orcinus orca) off the coasts of British Columbia and Alaska. I examine the …
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Characterizing maternal and alloparental care in wild killer whales
… behavior data. The southern resident killer whales (Orcinus orca ater) are a critically endangered, closed population of wild, free ranging cetaceans that have been closely studied by the Center for Whale Research for almost 50 years, with individual identification and maternal relatedness …
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Tracking sperm whales using passive acoustics and particle filters
… method using particle filters to track sperm whales. Sperm whales are the ideal subject species for this kind of development because the high sound pressure levels of their impulsive vocalisations (up to 236 dB re 1 ?Pa) makes them relatively simple to detect. Simulation tracking results …
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Vocalizing Behavior in Killer Whales (Orcinus orca) – an Evolutionary Account
In this thesis, we compare human language, as defined by Noam Chomsky in his biolinguistic account of language, with killer whale (Orcinus orca) vocalizations and what we call the orca vocalization and orca symbolic vocalization systems. We postulate hypothetical orca counterparts of the elements …
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Feast Your Eyes: An Exploration of Our Consumption of Whales
… this research navigates through the spaces where whales were both physically and visually consumed. Leveraging sensory walks, participant observation, and archival research, the study captures the essence of these spaces, drawing out their historical resonance. Incorporating oral history through …
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Whales & Wind: A Case Study on Misinformation About Renewable Energy Development
Mis- and disinformation are being increasingly harnessed to influence public opinion and advance agendas across the globe. It has also greatly impacted renewable energy planning and development. This thesis explores misinformation in the context of offshore wind projects. Despite the clear …
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Photo-identification of humpback whales (Megaptera novaeangliae) between Iceland, Norway and Guadeloupe
… and Norwegian catalogues, four (n=4) humpback whales have been sighted in both feeding grounds, while matches with Guadeloupe display a higher contribution of Norwegian (2.51%) than Icelandic whales (0.94%). The matches between Iceland and Norway may show eastern-North Atlantic feeding …
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Maintaining contact : design and use of acoustic signals in killer whales, Orcinus orca
… signals produced by free-ranging resident killer whales. The analysis focuses on signal features that might be useful for animals to maintain contact and coordinate activities with preferred associates, including: distinctiveness by group or individual, call amplitude, and directionality cues that …
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Mitochondrial DNA sequence variation in North Atlantic long-finned pilot whales, Globicephala melas
… DNA (mtDNA) from 59 long-finned pilot whales (Globicephala melas) that stranded on the coasts of Cape Cod, Newfoundland, Nova Scotia, Scotland, and England or were caught by commercial fisheries operating in the western North Atlantic, to determine if there is more than one genetic …
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Birth, death and taxis: North Atlantic right whales in the twenty-first century
… indicate reproduction in North Atlantic right whales is in a decline. Calving intervals have increased from about 3.3 years in the 1980's to over 5 years, and the age of first parturition is estimated to be 11 years. Females may lose calves before they are detected, artificially increasing the …
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A Theoretical Approach To Assessing Annual Energy Balance In Gray Whales (eschrichtius Robustus)
… to estimate necessary food intake of gray whales, Eschrichtius robustus, of the Eastern North Pacific stock. Field Metabolic Rates (FMR) for gray whales were first estimated based on various assumptions (e.g. volumetric representation of gray whales, extent of their feeding season, and …
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Behavioral choices of male humpback whales (Megaptera novaeangliae) on the Hawaiʻian wintering grounds
Humpback whales (Megaptera novaeangliae) are a migratory species, feeding in high latitude, cooler waters during the summer, and then traveling to low latitude, warmer waters during the winter months to calve and presumably, though it has never been documented, to mate. The North Pacific has three …
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The cost of locomotion in North Atlantic right whales (<italic>Eubalaena glacialis</italic>)
… The population of North Atlantic</p><p>right whales has not recovered following legal protection due to decreased fecundity,</p><p>including an increase in the intercalf interval, an increase in the years to first calf and</p><p>an increase in the number of nulliparous females in the …
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Genetic identity and ecology of Bryde's whales in the Hauraki Gulf, New Zealand
… been conducted in the Hauraki Gulf on Bryde’s whales; the least studied baleen whale. This thesis investigates this population using photoidentification and sighting records obtained from boat-based opportunistic surveys and genetic analyses of samples from living and 'stranded’ whales. Samples …
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