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Since its opening in 1836 Bristol Zoo has displayed animals from every continent except Antarctica in order to deliver amusement and instruction to its visitors. Over time, the nature of this human-animal space changed in a variety of important ways, reflecting transformations in the ways humans gave meaning to non-human animal life. This thesis engages with insights rooted in colonial, environmental, cultural and intellectual histories, principally arguing that multi-layered interspecies relationships were predominantly rooted in a complicated dyad of object-subject. Animals were seen as representative objects to be bought, sold, studied and enjoyed, as well as simultaneously individual subjects capable of communing with their human counterparts. Such relationships were frequently illustrative of a fluid balance of control and, in many ways, lay bare the uncertain philosophical boundary separating humans from the rest of the natural world. While this thesis details important changes over time, it approaches these relationships thematically. It shows that animals were objects of desire, though they had different values depending on species, age, sex and utility. Later, their value was increasingly attached to the genetic information coursing through their veins. Modes of maintaining the animal and displaying it for instructive and entertaining consumption reveal similarly complicated ways of thinking about non-human animal life. The imagination of animals in scientific and anthropomorphic ways denote entangled ontological classifications of human and nonhuman animals, and the existence of a hierarchy of species based on the possession of humanoid features. Moreover, the material influence of animals, while challenging conceptualisations of absolute human power in captive spaces, has often been interpreted in ways which reinforced the status of animals as objects of physical and imaginative manipulation. Finally, in death, animals were understood in ways that changed significantly during the period, but which remained rooted in the familiar binary of object-subject.

There is evidence that the presence of the visiting public affects the behaviour of zoo-housed mammals. Understanding the effect of visitors is important in improving animal welfare, achieving zoo conservation goals, increasing visitor education/entertainment, and facilitating interpretation of data on zoo animal biology. A series of studies and experiments focusing on the effect of zoo visitors on captive mammal behaviour is presented. The influence of visitor density on a range of primates and large carnivores is examined. Methodological concerns regarding the operational definition of visitor density in the literature are expressed and a clarification of terms which may be helpful when comparing previous research is provided. Visitor noise data, using an objective measure of the variable, and its relationship to visitor density are also presented. External and internal visual barriers between visitors and zoo animals were hypothesised to moderate the visitor effect and enrich the environment of the study groups. Camouflage nets mounted on the outside of enclosure viewing windows had little impact on primate or felid behaviour, with the exception of the Sumatran orangutan group, who showed a trend toward decreased social play in the presence of the external barrier. Polar bear behaviour showed evidence of an enriched environment, with trends toward increased levels of swimming and decreased levels of resting. An internal visual barrier, which prevented visitors from having visual contact with the golden lion tamarins when the nonhuman primates were behind it, was also tested and elicited more extensive trends toward behavioural change than did the nets. Both Sumatran orangutans and zoo visitors were provided with a similar puzzle feeder in an effort to enrich the orangutan enclosure, and improve the visitor experience. It was hypothesised that the orangutans might be stimulated by watching visitors manipulate the device, but this did not occur. Orangutan use of the puzzle feeder within their enclosure was also unaffected. Olfactory stimuli were introduced into primate and felid enclosures and visitor viewing areas to investigate the role olfaction may play in the visitor effect. Although olfactory stimuli had an extensive significant effect on the behaviour of the study groups when it was introduced into the enclosure, there was little change when visitors were associated with the olfactory stimuli which suggest there may not be an olfactory visitor effect in primates or felids. The effect of visitors on petting zoo-housed mixed-breed goats, llama, and Vietnamese pot-bellied pigs was studied and compared to their behaviour without the presence of visitors. The goats were unaffected and the llama showed only a trend toward decreased levels of sitting in the presence of visitors. The Vietnamese pot-bellied pigs were significantly affected by the presence of visitors, exhibiting decreased inactivity and social behaviour. The hypothesis that a sustained absence of visitors would result in a more intense visitor effect was tested and was not supported by the data. An additional experiment investigating the effect of visitor grooming on the petting zoo study species showed that, while visitors spent more time interacting with the animals in the grooming condition, xiv the behaviour of the study animals indicated that they did not find visitor grooming rewarding. Data on the interaction between visitor density and the various experimental techniques tested here indicate that visitor density may impact animal response to environmental enrichment, supporting previous findings in the literature. In the presence of visual barriers, foraging devices, and olfactory stimuli, the relationship between animal behaviour and visitor density changed significantly, both qualitatively and quantitatively. These results suggest that collecting visitor density data when testing environmental enrichment techniques could be helpful when assessing their effectiveness, ultimately improving the welfare of zoo-housed mammals. Based on the data presented here, in conjunction with the literature, a closing discussion outlines proposed refinements to the visitor effect research guidelines published by the British and Irish Association of Zoos and Aquariums (2005).

Avec l’actuelle crise de la biodiversité, nos modes de vie de plus en plus urbains diminuent nos opportunités d’expériences de nature. Cependant, une relation intime avec la nature a de nombreux bénéfices, que ce soit pour le bien être individuel, la santé ou la restauration de l’attention, mais aussi les enjeux environnementaux. De nombreuses recherches ont exploré le degré auquel les citoyens se sentent faire partie du monde naturel, et se sont ainsi intéressées plus récemment à l’importance de reconnecter les citoyens – en particulier urbains – à la nature et aux enjeux de conservation, à travers les expériences de nature. Au travers de ce travail de thèse, nous avons exploré si les zoos pourraient participer à une telle reconnexion. Pour cela, une approche interdisciplinaire a été adoptée, avec des concepts et méthodes issus de la biologie de la conservation, de l’anthropologie, de la psychologie sociale et psychologie de la conservation, de la psycho acoustique, et de l’économie environnementale. Nous avons tout d’abord exploré si les zoos étaient considérés comme des espaces de nature. Puis, nous nous sommes intéressés plus particulièrement à la perception de la nature dans le zoo, d’un point de vue visuel et sonore. L’analyse comparative entre des visiteurs de zoos et des utilisateurs de parcs urbains nous a permis d’explorer l’impact de la visite au zoo sur le sentiment de connexion à la nature et sur les attitudes envers la conservation. Enfin, nous nous sommes intéressés aux comportements pro-conservation au zoo, au travers de l’analyse du choix de l’animal et du montant de la donation chez des participants à un programme de parrainage d’un animal au zoo.Ce travail démontre que même si le zoo est considéré et utilisé comme un espace de nature, il n’affecte pas le sentiment de connexion à la nature des visiteurs. Cependant, en comparaison à une visite d’un parc urbain, la visite au zoo a le potentiel de promouvoir les attitudes envers la conservation, au travers de la connexion à la nature. De plus, même au zoo, si l’accent est largement mis sur les espèces captives, exotiques, les visiteurs semblent aussi percevoir la biodiversité urbaine. Néanmoins, à l’inverse des attitudes pour la conservation, il reste incertain que le zoo promulgue les comportements pro-conservation. Pour conclure, ce projet de thèse a mis en évidence que dans le processus de reconnexion des citoyens à la nature et aux enjeux de conservation, les zoos offrent indubitablement un type d’expérience de nature aux citoyens urbains, qui devrait être pris en considération au même titre que d’autres types d’expériences de nature (e.g. forêts), notamment puisque les zoos sont des institutions qui accueillent une très large et diverse proportion de la population dans le monde. / With the on-going biodiversity crisis, growing urban lifestyles decrease opportunities to experience nature. However, an intimate relationship with nature has various benefits, for individual well-being, health or attention restoration, but also for environmental issues. Much research effort explored the extent to which people feel being part of the natural world, and thus focused more recently on the importance of reconnecting people – especially urban dwellers – with nature and conservation issues, through experiences of nature. In this work, we investigated whether zoos could participate in such reconnection. We used an interdisciplinary approach, with concepts and methods from conservation biology, anthropology, social and conservation psychology, psychoacoustics, and ecological economics. We first explored whether zoos were considered as natural places. Then, we looked more closely at people’s perception of nature at the zoo, from both visual and auditory perspectives. Comparative analysis between zoo visitors and urban park users allowed us investigate the impact of the zoo visit on sense of connection to nature and conservation attitudes. Finally, we focused on pro-conservation behaviors at the zoo through the analysis of animal choice and amount of donations of participants to an animal adoption program at the zoo. This work demonstrates that although the zoo is considered and used as a natural place, it does not affect sense of connection to nature. However, compared to a visit to an urban green park, the zoo visit has the potential to raise conservation attitudes, through connectedness to nature. Additionally, despite an emphasis on captive, exotic species at the zoo, visitors also seemed to perceive urban wildlife. Nevertheless, unlike conservation attitudes, the contribution of the zoo in enhancing pro-conservation behaviors remains doubtful. To conclude, this PhD project highlighted that in the process of reconnecting people to nature and conservation issues, zoos undoubtedly provide one type of experience of nature to urban dwellers, that should be considered along with other types of experiences of nature, e.g. woodlands, especially because zoos are institutions that target a very large and diverse part of the population, worldwide.