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Thèses sur le sujet « Anthropogenic food »

Auteur : Grafiati

Publié le 2 juin 2025

Mis à jour le 31 juillet 2025

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1

Real, Garcia Enric. "Influence of predictable anthropogenic food subsides on seabird´s breeding investment." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/668552.

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Recent policies on the ban of fishing discards and the closure of open-air landfills are expected to reduce amount of predictable anthropogenic food subsidies (PAFS) for seabirds. To forecast the ecological consequences of these policies, it is necessary to understand the influence that each of these resources has on ecological parameters and how this can be mediated by density-dependent mechanisms. Besides, for those species exploiting both types of resources, it is important to consider whether or not their effects act synergistically. Finally, it is also important to understand how the ecol

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Cecchine, Gary Anthony III. "Combinations of natural and anthropogenic stressors affect populations of freshwater rotifers." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/25398.

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3

Farwell, Andrea J. C. "Stable isotope study of riverine benthic food webs influenced by anthropogenic developments." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0024/NQ51037.pdf.

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4

Filimonova, Valentina. "The effects of anthropogenic stressors on the food quality in estuarine systems." Doctoral thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/17770.

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Doutoramento em Ciências do Mar<br>De um modo geral, os poluentes constituem uma ameaça para os ecossistemas aquáticos, originando grande preocupação nas entidades responsáveis pela gestão destas áreas. Por exemplo, o uso intensivo e continuado de poluentes em áreas agrícolas, perto de zonas húmidas costeiras, como o estuário do Mondego (Portugal), levou à execução de programas de monitorização, ao longo dos últimos 20 anos, para proteger e recuperar este sistema aquático. De acordo com informações recentes, obtidas junto de cooperativas agrícolas do vale do Mondego, Primextra® Gold TZ é o her

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5

Signor, Kari D. "Investigating Methods to Reduce Black Bear (Ursus americanus) Visitation to Anthropogenic Food Sources: Conditioned Taste Aversion and Food Removal." DigitalCommons@USU, 2009. https://digitalcommons.usu.edu/etd/547.

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Conflicts between humans and black bears (Ursus americanus) jeopardize the safety of both humans and bears, especially when bears become food-conditioned to anthropogenic food sources in areas such as campgrounds. Interest in using non-lethal techniques, such as aversive conditioning, to manage such conflicts is growing. I conducted a captive experiment at The Wildlife Science Center in Minnesota and two field experiments in the La Sal Mountains, Utah, to investigate the effects of taste aversion conditioning using thiabendazole (TBZ) with a novel flavor cue and food removal on black bear fo

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6

Catto, Sarah. "Fluctuating human activity and associated anthropogenic food availability affect behaviour and parental care of Red-winged Starlings." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29429.

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Increased food availability associated with urbanisation is widely recognised as one of the key factors influencing avian demography. Temporal fluctuations in food availability, tied to variation in human presence, are of particular interest as they occur frequently in urban environments, but their impacts on the survival and reproduction of birds have not been particularly well-studied. In this study, I explored whether breeding Red-winged Starlings at a university campus in Cape Town, South Africa alter their behaviour and parental care of nestlings in response to fluctuating numbers of peop

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7

PATELLI, MARTINA. "ZOOPLANKTONIC POPULATION DYNAMICS AND PELAGIC FOOD WEBS IN THE DEEPEST SUBALPINE LAKES RELATED TO ANTHROPOGENIC PRESSURE AND CLIMATE CHANGE." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2020. http://hdl.handle.net/10281/262346.

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Il cambiamento climatico è considerato una delle minacce più gravi per la terra e gli ecosistemi acquatici e cresce la preoccupazione per gli effetti che il riscaldamento globale può avere sulle comunità biologiche. Negli ultimi anni, diversi studi hanno evidenziato la sensibilità dei corpi idrici alle fluttuazioni climatiche. Gli organismi zooplanctonici, caratterizzati da piccole dimensioni e rapido ciclo riproduttivo, sono sensibili ai cambiamenti ambientali. Inoltre, rappresentano dei componenti chiave delle catene trofiche acquatiche, collegando i produttori primari ai grandi consumatori

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8

Frainer, André. "Ecosystem functioning in streams : Disentangling the roles of biodiversity, stoichiometry, and anthropogenic drivers." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-82914.

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What will happen to ecosystems if species continue to go extinct at the high rates seen today? Although ecosystems are often threatened by a myriad of physical or chemical stressors, recent evidence has suggested that the loss of species may have impacts on the functions and services of ecosystems that equal or exceed other major environmental disturbances. The underlying causes that link species diversity to ecosystem functioning include species niche complementarity, facilitative interactions, or selection effects, which cause process rates to be enhanced in more diverse communities. Interfe

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9

Malpass, Jennifer S. "Effects of food and vegetation on breeding birds and nest predators in the suburban matrix." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1446725882.

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10

Reis, Andressa da Silva. "Estrutura e dinâmica trófica das comunidades aquáticas em riachos de Mata Atlântica: influência do gradiente de impactos em escala local e de microbacia." Universidade Federal de Juiz de Fora (UFJF), 2016. https://repositorio.ufjf.br/jspui/handle/ufjf/6050.

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Gray, Rachel Masterson. "Digestibility of Foods and Anthropogenic Feeding of Black Bears in Virginia." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/34726.

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<p> For years, bear hunters have provided an unknown amount of food to black bears <i>(Ursus americanus)</i> in Virginia, supplementing their natural food supply. Possible effects of feeding bears can be negative, such as food conditioning and habituation to people, or positive, such as enhanced or sustained reproductive rates, especially in years of mast crop failure. In July 1999, the Virginia Department of Game and Inland Fisheries (VDGIF) adopted a regulation recommendation that prohibited the feeding of wildlife on national forest and department-owned lands. We mailed a survey to all m

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12

Alric, Benjamin. "La vulnérabilité des lacs face au couplage du climat et des perturbations anthropiques locales : approche paléolimnologique basée sur les cladocères." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00839587.

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Les écosystèmes lacustres sont de plus en plus soumis à de multiples perturbations mais leur réponse est encore trop rarement considérée de façon globale. En effet, au travers d'un jeu d'interactions complexes, chaque perturbation peut moduler l'intensité de l'impact des autres sur les lacs, et de ce fait, leur réponse. Dans ce contexte, ce travail doctoral est axé sur l'approfondissement de notre compréhension de la réponse des lacs à un contexte de perturbations multiples, sur le long terme. Pour cela, trois grands lacs profonds (le lac Léman, du Bourget et d'Annecy), soumis à une perturbati

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13

Johnson, Luanne PhD. "The Behavioral Ecology and Population Characteristics of Striped Skunks Inhabiting Piper Plover Nesting Beaches on the Island of Martha's Vineyard, Massachusetts." Antioch University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=antioch1463581942.

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14

Mor, Roy Jordi-René. "Flow alteration and wastewater inputs effects on freshwater communities in Mediterranean rivers." Doctoral thesis, Universitat de Girona, 2019. http://hdl.handle.net/10803/668849.

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Mediterranean rivers are characterized by high hydrological variability and heterogeneity of habitats, placing themselves amongst arid and temperate climates, and are associated with high biological diversity. On the other hand, its high dependence on precipitation favours water needs for anthropogenic use to exceed availability, creating a scarcity scenario that 2/1 causes an increase in human pressure such as dam construction and pollution. This thesis aims to identify the effects produced by the regulation of the flow and the contamination for urban wastewater in the communities

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15

Frost, Carol Margaret. "Spillover and species interactions across habitat edges between managed and natural forests." Thesis, University of Canterbury. Biological Sciences, 2013. http://hdl.handle.net/10092/8989.

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We are currently faced with the global challenge of conserving biological diversity while also increasing food production to meet the demands of a growing human population. Land-use change, primarily resulting from conversion to production land, is currently the leading cause of biodiversity loss. This occurs through habitat loss, fragmentation of remaining natural habitats, and resulting edge effects. Land-sparing and land-sharing approaches have been discussed as alternative ways to engineer landscapes to mitigate biodiversity loss while meeting production objectives. However, these represen

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16

Auman, HJ. "The Effects of Anthropogenic Food on the Body Condition, Biochemistry, Stable Isotopes and Egg Quality of Silver Gulls in Tasmania." Thesis, 2008. https://eprints.utas.edu.au/7955/1/01front.pdf.

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Many studies worldwide have attested to an increase in gull populations following urbanisation, and it is widely presumed that gulls have benefited as a direct consequence. However, foraging at tips and food outlets may induce a health cost in urbanised birds and the benefits of eating anthropogenic food should be questioned; the physiological health effects of "garbivory" on wild birds are yet to be tested. This study was based on the premise that a negative effect on the health and hence fitness of gulls was expected from eating the equivalent of human "junk food". This research investigate

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