Bibliography: leaves 378-402. / xviii, 402 leaves : ill. (chiefly col.), maps (chiefly col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Explores the status and nature of interpretation within the Australian whale watching industry, on both a national scale and as it is practiced at three diverse case study sites along the southern coast, and develops strategies which may enable this form of tourism to reach it's highest educative potential / Thesis (Ph.D.)--University of Adelaide, Dept. of Geographical and Environmental Studies, 2000

Population structure and vital rates of Gulf of Maine (GOM) humpback whales, Megaptera novaeangliae, were studied by a combination of longitudinal data, region-wide surveys and modern mark-recapture statistical methods. Demography and rates of exchange were examined among six GOM areas. Juveniles and females were preferentially encountered in southern GOM habitats, including at the Studds Stellwagen Bank National Marine Sanctuary (SBNMS). Multi-state modelling also revealed unequal probabilities of movement between areas that was not explained by inter-area distance, adjacency, whale density or dominant prey type. Aerial surveys and photo-identification data indicated that the population was likely closed to migration between June and September. Otherwise, seasonal trends in population composition were consistent the demographically staggered migration reported in other oceans. Over-wintering occurred,but there was little evidence that a significant number of humpback whales failed to undertake or complete migration each year. Vital rates varied with sex, age and time. Juveniles exhibited lower and more variable survival than adults and so were a potential source of downward bias in “non-calf” survival estimates. Males exhibited higher survival than females and achieved maximal survival at age five, the estimated age at male puberty. By contrast, females did not reach peak survival until the current average age at first birth (8.78 years, s = 2.33). The latter was significantly higher than previous estimates and females that recruited by age seven had a lower likelihood of subsequent survival than those that recruited late. Costs of reproduction persisted into adulthood, with breeders exhibiting lower survival than nonbreeders. Calves born during years of low fecundity exhibited lower survival than those born when fecundity was high, possibly due to lower maternal investment. Costs of reproduction have not previously been described in cetaceans, but are consistent with the risks potentially associated with capital breeding.

De nombreux prédateurs marins se nourrissent directement des prises des pêcheurs. Ces interactions, définies comme de la déprédation, engendrent des conséquences socio-économiques considérables pour les pêcheurs ainsi que des implications de conservation pour la faune sauvage. D’un côté, la déprédation endommage le matériel et augmente l’effort de pêche pour atteindre les quotas. D’un autre côté, la déprédation augmente le risque de mortalité des prédateurs marins (prise accidentelle ou rétorsion létale par les pécheurs). La pêcherie à la palangre est la plus impactée par la déprédation, principalement par les odontocètes, ce qui incite à trouver des solutions. La majorité des études se concentrant sur la déprédation s’est principalement basée sur des observations en surface, de ce fait la manière dont les prédateurs retirent les poissons sur les lignes reste confuse. Par ailleurs, l’impact de la déprédation sur le comportement des pêcheurs ainsi que les facteurs expliquant leur détectabilité n’ont reçu que peu d’intérêt. L’objectif de cette thèse est donc d’étudier ces problématiques par un suivi acoustique, une utilisation de balises et une approche en écologie comportementale humaine, en se concentrant sur la pêcherie palangrière française ciblant la légine australe (Dissostichus eleginoides) impactée par la déprédation des orques (Orcinus orca) et des cachalots (Physeter macrocephalus). Les capitaines ont été décrits comme recherchant leur ressource selon la théorie de « l’optimal foraging », mais avec des perceptions de la compétition et du succès de pêche qui divergent. Certains capitaines seraient ainsi plus enclins à remonter les palangres au plus proche et à rester sur une zone, même en présence de compétition, augmentant alors le risque d’interaction. L’acoustique des navires a révélé que certaines manoeuvres (marche arrière par exemple) propagent différemment sous l’eau. La manière dont les capitaines manoeuvrent leur palangrier influencerait ainsi leur détectabilité et donc leur risque d’interaction avec les prédateurs. D’autre part, l’utilisation de capteurs sur les palangres et les animaux a révélé que les orques et les cachalots sont capables de déprédater sur les palangres posées sur le fond marin. Ces observations laissent à penser que les odontocètes sont en mesure de localiser l’activité de pêche bien avant la remontée de la ligne, ce qui pourrait être expliqué par une signature acoustique spécifique du déploiement de la ligne. L’ensemble des résultats de cette thèse suggère que la déprédation sur les palangres démersales est très probablement sous-estimée. Cette thèse apporte également des éléments importants pour la lutte contre la déprédation, en montrant la nécessité de protéger les palangres dans l’intégralité du processus de pêche. / Many marine predator species feed on fish caught by fishers directly from the fishing gear. Known as depredation this interaction issue has substantial socio-economic consequences for fishermen and conservation implications for the wildlife. Costs for fishers include damages to the fishing gear and increased fishing effort to complete quotas. For marine predators, depredation increases risks of mortality (lethal retaliation from fishers or bycatch on the gear). Longline fisheries are the most impacted worldwide, primarily by odontocetes (toothed whales) depredation, urging the need for mitigation solutions to be developed. Most of studies assessing depredation have primarily relied on surface observation data, thus the way odontocetes interact with longlines underwater remains unclear. Besides, the way fishermen respond to depredation during fishing operations, or can influence their detectability to odontocetes, have been poorly investigated. This thesis therefore aimed at investigating these aspects through a passive acoustic monitoring, bio-logging and human ecology approaches, focusing on the French Patagonian toothfish (Dissostichus eleginoides) longline fisheries impacted by killer whales (Orcinus orca) and sperm whales (Physeter macrocephalus). Firstly, this thesis reveals that captains behave as optimal foragers but with different personal perception of competition and fishing fulfilment. Some captains would thus be more likely to stay within a patch or to haul closest longline even in presence of competition, suggesting these captains would show higher interaction rates. Additionally, the propagation of vessels’ acoustics varied depending on the type of manoeuvre (e.g. going backward vs. forward). The way captains use their vessels to navigate may therefore influence their detectability and so their depredation level. Secondly, loggers deployed on both the longlines (accelerometers) and odontocetes (GPS-TDR) revealed that killer whales and sperm whales are able to depredate on longlines while soaking on the seafloor. These observations suggest, therefore, that odontocetes can localise fishing activity before the hauling, which could be partially explained by specific acoustic signatures recorded during the setting process. Altogether, the results of the thesis suggest that depredation rates on demersal longlines are most likely underestimated. The thesis also brings some important insights for mitigation measures, suggesting that countermeasures should start from setting to hauling.

Within-population behavioural variation can greatly affect the ecology of a species and the outcome of evolutionary processes. This study aimed to determine how variable sperm whale social and vocal behaviour is between both individuals and their social units. The population of whales off Dominica is small and isolated from communities in neighbouring waters. Female and immature whales live together in social units containing about 7 animals. I analysed their social relationships and their ‘coda’ communication signals using an unparalleled dataset of social and vocal interactions at the level of the individual. Within units, calves were significant nodes in their social unit’s network, and thus I provide quantitative support for the hypothesis that communal calf care acts as the primary evolutionary driver for group formation in this species. Social relationships within and between units were diverse, while the spatial spread of individuals within units and their travel speeds were similar among all of the units. I identified long-term patterns of association between units consistent over decadal time scales. Social units had characteristic vocal repertoires, but all were dominated by the ‘1+1+3’ and ‘5R’ coda types. Differences between units resulted from some units using specific 4-click coda types. Units and individuals used different accents on their ‘5R’ codas, but the ‘1+1+3’ coda was stereotyped across all individuals and units studied. The repertoires of different units were as similar as units within vocal clans in the Pacific. My results support the hypothesis that the ‘5R’ coda may function in individual identification. The stability of the ‘1+1+3’ coda may be the result of selection for a marker of clan membership. Individual repertoires differed consistently across years; and contrary to an existing hypothesis, new mothers did not vary their repertoire to be more distinct after giving birth. However, calves did use a class-specific ‘3+1’ coda. In summary, sperm whale social and vocal behaviour vary between individuals and among units. Variation in the social and vocal behaviour of female sperm whales results from a trade-off between individuality and conformity within units and clans.

Den här uppsatsen jämför Mary Shelleys Frankenstein: eller den moderna Prometeus med Kenneth Branaghs film Mary Shelley’s Frankenstein från 1994. Uppsatsens syfte är att se hur vissa av förändringarna från text till film kan spåras till tidigare Frankensteinadaptioner, specifikt Frankenstein och Bride of Frankenstein (1931 respektive 1935) av James Whale, och The Curse of Frankenstein (1957) av Terence Fisher. Undersökningen visar att vissa förändringar som gjorts i tidigare filmer på grund av filmernas samtid och omgivning har blivit en del av den allmänna bilden av Frankensteinberättelsen, och på så vis lever kvar även i senare filmatiseringar. Slutsatsen dras att Mary Shelley’s Frankenstein inte bara är en adaption av Mary Shelleys text, utan kan även ses som en adaption av tidigare filmskapares verk. / This essay compares Mary Shelley’s Frankenstein; or, The Modern Prometheus with Kenneth Branagh’s 1994 film Mary Shelley’s Frankenstein. The purpose of the essay is to examine how some of the changes from text to film can be traced to earlier Frankenstein adaptations, specifically Frankenstein and Bride of Frankenstein (1931 and 1935, respectively) by James Whale, and The Curse of Frankenstein (1957) by Terence Fisher. The research shows that certain changes made in earlier films due to the films’ time and place in history have become part of the general image of the Frankenstein story, and thus survive even in later film adaptations. The conclusion is drawn that Mary Shelley’s Frankenstein is not only an adaptation of Mary Shelley’s text, but can also be seen as an adaptation of previous filmmakers’ works.

The size and trend of a population is fundamental to the assessment of its conservation status, yet cetacean abundance data are often biased and lack statistical power to detect trends. As a result, the conservation status of many species is unknown and the population-level effects of conservation pressures such as anthropogenic sound cannot be quantified. Failing to account for cetaceans that are unavailable for detection at the surface during abundance surveys will negatively bias estimates of abundance. Analysis of time-depth data revealed that pilot whale dive and surface interval durations, and availability for detection, varied with time of day, but this bias was accurately estimated using the mean dive and surface interval durations. A global analysis of cetacean density estimates compiled from multiple line-transect surveys incorporated covariates describing availability bias, and other sources of variability, to facilitate the detection of underlying temporal trends. Decadal global trends in cetacean density were detected for four species, while significant yearly ocean-scale trends were detected for six families. Exploratory analysis of data compiled from line-transect surveys found some evidence that trends in the density of minke whales and sperm whales in the northeast Atlantic varied between areas with and without seismic survey effort. However, there were insufficient data to clearly identify chronic exposure to anthropogenic sound from seismic surveys as a driver of population change. Analysis of strandings data from the UK and Ireland identified some evidence that harbour porpoise and sperm whale stranding rates were related to seismic survey effort and wind farm construction, but the results were not conclusive. Large-scale cetacean surveys provide valuable information on the density and spatial and temporal distribution of cetaceans that is vital for monitoring populations, but these surveys cannot replace dedicated studies of the population-level effects of sound on cetaceans.

The purpose of this study is to examine if the experience of whale watching can lead to increased knowledge of environmental problems. We also want to find out whether increased knowledge in turn could lead to changing environmental attitudes and behaviors. The theoretical framework consists of theories about sustainable tourism, ecotourism and responsible environmental behavior. The paper also has a section where previous research on ecotourism impacts on behavior and attitudes is discussed and subsequently addressed in the analysis section. Data has been collected through a case study where seven semi-structured interviews were conducted with individuals who participated in whale watching. The results show that all respondents had greater knowledge of whales by their experiences, the degree of knowledge was due to respondents' prior knowledge. The respondents did not consider their attitude towards environmental issues has changed considerably by the experience or that it affected their environmental behavior. A number of conclusions were drawn from analysis of empirical data using the selected theories. It seems that it is easier to give people knowledge than to influence them to change their attitudes and it is particularly difficult to say whether the experience of a single ecotourism experience may impact deeply ingrained attitudes and behaviors. Overall, the results suggest that ecotourism experiences to some extent leads to the strengthening of participants' environmental awareness and thus increase their interest in participating in further ecotourism experiences. Through these circular effects, an increased environmental knowledge provided by ecotourism experiences in the longer term can help to develop more responsible environmental attitudes and behavior of individuals. / Syftet med denna uppsats är att undersöka om upplevelsen av valskådning kan leda till ökad kunskap om miljöproblem. Vi vill också ta reda på om ökad kunskap i sin tur kan leda till förändrade miljömässiga attityder och beteenden. Uppsatsens teoretiska ramverk utgörs av teorier kring hållbar turism, ekoturism och ansvarsfullt miljömässigt beteende. Uppsatsen har även ett avsnitt där tidigare forskning kring ekoturismens inverkan på beteende och attityder diskuteras för att därefter behandlas i analysdelen. Uppsatsens empiri har samlats in genom en kvalitativ studie där sju semistrukturerade intervjuer har genomförts med individer som deltagit i valskådning. Resultaten visar att samtliga respondenter fick ökad kunskap om valar av sina upplevelser, hur hög grad av kunskap berodde dock på respondenternas förkunskap. Respondenterna ansåg inte att deras attityder gentemot miljöfrågor förändrats avsevärt av upplevelsen eller att det påverkat deras miljömässiga beteende. Ett antal slutsatser har dragits utifrån analys av empiri med hjälp av valda teorier. Det verkar som att det är lättare att ge människor kunskap än att påverka dem att ändra sina attityder och det är särskilt svårt att säga om erfarenhet av en enda ekoturistisk upplevelse kan ha effekt på djupt inrotade attityder och beteenden. Sammantaget tyder resultaten på att ekoturistiska erfarenheter till viss del leder till att förstärka deltagarnas miljömedvetenhet och därmed också öka deras intresse för att delta i ytterligare ekoturistiska upplevelser. Genom dessa cirkulära effekter kan ökad miljökunskap som tillhandahålls genom ekoturistiska upplevelser i ett längre perspektiv bidra till att utveckla mer ansvarsfulla miljömässiga attityder och beteenden hos individer.

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