Дисертації з теми "Migratory change"
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Doswald, Nathalie. "Potential effects of climate change on the distribution and migration of European breeding migratory birds." Thesis, Durham University, 2009. http://etheses.dur.ac.uk/255/.
Повний текст джерелаMorrison, C. A. "Causes of population change in a long-distance migratory passerine, the willow warbler (Phylloscopus trochilus)." Thesis, University of East Anglia, 2011. https://ueaeprints.uea.ac.uk/38823/.
Повний текст джерелаBrunner, Alicia Rae Brunner. "The Winter Ecology and Response to Environmental Change of a Neotropical Migratory Songbird: the Swainson’s Warbler." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1525441285908047.
Повний текст джерелаMacias-Duarte, Alberto. "Change in Migratory Behavior as a Possible Explanation for Burrowing Owl Population Declines in Northern Latitudes." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/145395.
Повний текст джерелаHedlund, Johanna. "Climate change effects on migratory birds and on the ecology and behaviour of the willow warbler (Phylloscopus trochilus)." Doctoral thesis, Stockholms universitet, Zoologiska institutionen, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-120409.
Повний текст джерелаAt the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Manuscript. Paper 3: Manuscript. Paper 4: Manuscript.
Schmidt-Verkerk, Kerstin. "The potential influence of climate change on migratory behaviour - a study of drought, hurricanes and migration in Mexico." Thesis, University of Sussex, 2012. http://sro.sussex.ac.uk/id/eprint/38599/.
Повний текст джерелаCampeau, Allen. "Remotely-sensed changes in the primary productivity of migratory caribou calving grounds and summer pasture : the mixed influences of climate change and caribou herbivory." Master's thesis, Université Laval, 2016. http://hdl.handle.net/20.500.11794/27199.
Повний текст джерелаThis thesis used remote sensing to examine how changes in caribou abundance can impact forage availability, and how these changes might in turn affect the population dynamics and space use patterns of migratory caribou. We investigated these relationships for the Rivière-George caribou herd (RGH) and its calving grounds and summer range in Northern Quebec and Labrador (Canada) from 1991-2011. We modelled the relationships between primary productivity and various climatic variables, allowing us to isolate the effects of non-climatic factors, such as caribou herbivory, on primary productivity. We found a negative relationship between caribou density and primary productivity at the range-scale, suggesting that caribou herbivory can reduce forage abundance and contribute to habitat degradation. However, a strong warming trend over the study period, coupled with a decline in RGH population size, meant that we observed a trend towards higher primary productivity. This greening trend may represent vegetation recovery following the reduction in caribou herbivory and/or an effect of climate warming.
Xenophontos, Marina. "Ecology of the endemic migratory passerine Cyprus Wheatear Oenanthe cypriaca : the effects of climate change on a restricted range species." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/11967.
Повний текст джерелаStokes, Kimberley Laura. "Ecology of marine turtles under climate change." Thesis, University of Exeter, 2014. http://hdl.handle.net/10871/21847.
Повний текст джерелаSchäfer, Merlin [Verfasser], Florian [Akademischer Betreuer] Jeltsch, Stephanie [Akademischer Betreuer] Kramer-Schadt, Marina [Akademischer Betreuer] Müller, Florian [Gutachter] Jeltsch, Karin [Gutachter] Frank, and Ulrich [Gutachter] Brose. "Understanding and predicting global change impacts on migratory birds / Merlin Schäfer ; Gutachter: Florian Jeltsch, Karin Frank, Ulrich Brose ; Florian Jeltsch, Stephanie Kramer-Schadt, Marina Müller." Potsdam : Universität Potsdam, 2019. http://d-nb.info/1218405287/34.
Повний текст джерелаSeward, Adam Michael. "Impacts of climate changes on a long-distance migratory bird, the northern wheatear." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/28332/.
Повний текст джерелаAit, Khandouch Mohamed. "Les migrants, vecteurs de changement dans leur territoire d’origine : vallée de Todgha dans le sud-est marocain." Thesis, Angers, 2017. http://www.theses.fr/2017ANGE0048.
Повний текст джерелаMigration from Todgha (Tinghir province-Morocco) to European countries had refer more than half a century. Firstly, had temporary. This trend has evolved towards securing soon as family migration wastriggered. Since then the migration has experienced profound changes accompanied by significant transnational-mobility between Todgha and the European area. The extent of the geographical area of its dispersion and attachment to the country of origin has created a transnational space that structured by community and relational networks then followed individuals and goods and ideas. The migrant had imported, reproduce, and adapt what he learned in the country of destination to participate in the developing his country of origin, as well as economic, cultural, social, environmental, and political. His involvement in local civic practice, resulting intime by changes. Containment it has created a joint stake in the territory and a weight on local players. Shared by his presence, it remains as a component to b econsidered to understand the process of transformation emerges this oasis for decades
"Survival, effects of habitat change, and migratory tactics of Nearctic-Neotropical migratory shorebirds." Tulane University, 2021.
Знайти повний текст джерелаChung, Yi-Ching, and 鍾儀靜. "Study on The Potential Impact of Climate Change on The North Atlantic Migratory Fish, Taking The Example of Atlantic Cod, Atlantic Halibut, Atlantic Salmon and Atlantic Bluefin Tuna." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/4c7s3q.
Повний текст джерела國立臺灣師範大學
地球科學系
105
The ocean environment has changed in recent decades under the impacts of climate change. In the North Atlantic Ocean, the long-term trend of ocean temperature and salinity is increasing, whereas trend of chlorophyll-a concentration is decreasing. Owing to the changes in the living environment, we wonder how the environmental changes influence the marine organisms and how marine organisms adapt to the changes of environment. In this study, we use the global capture production data from FAO and the assimilation data from SODA POP to investigate the potential connections between the ocean environmental changes and the selected Atlantic fishes: Atlantic Cod, Atlantic Halibut, Atlantic Salmon, and Atlantic Bluefin Tuna during the period 1991-2010 based on the empirical orthogonal function analysis. Our results indicate a significant negative correlation between the ocean temperature and the capture productions of Atlantic Cod and Atlantic Salmon over the past two decades. The relationship between the capture productions of Atlantic Cod and Atlantic Bluefin Tuna and the ocean salinity shows significant negative correlation. Change of chlorophyll-a concentration may also affect the capture productions of Atlantic Halibut, Atlantic Salmon and Atlantic Bluefin Tuna. In addition, the variation of ocean salinity and temperature may cause Atlantic Cod and Atlantic Salmon shift their living depths to a deeper level, respectively.
Beaudoin, Peña Alexandre. "L'État a-t-il un droit d'exclure? Une réponse cosmopolitique à la question migratoire." Thèse, 2019. http://hdl.handle.net/1866/23798.
Повний текст джерелаThis master’s thesis tries to answer two interrelated questions: does the state have, from a philosophical point of view, a right to exclude, and what is the answer the state should give, from a moral point of view, to the migratory phenomenon? To do this, we engage in a critical analysis of the philosophical debate on borders and immigration between the defenders of the state’s right to exclude and the defenders of open borders. Adopting a non-ideal cosmopolitan liberal egalitarian approach and focusing mainly on unskilled economic migration from poor countries to rich liberal democracies in today's world, we successively criticize the security, socio-economic and democratic arguments for the state’s right to exclude. In general, we aim to show that these three arguments exaggerate the threat of immigration for security, public order, jobs, wages, the welfare state, culture and political self-determination, and that they do not give enough weight to the interests of migrants from poor countries. We conclude that the state does not, from a philosophical point of view, have a right to exclude, and that it would be morally preferable to open the borders further, while redefining the powers and responsibilities of states and international institutions to enable an international multilateral governance of migration, and to better respond to the main problems that amplify the migratory phenomenon, i.e. armed conflicts, glaring global socio-economic inequalities, and climate change.
Mahavene, Guebuza Guilichane. "Mudanças Legislativas e Concepções da Imigração : Controlo e Gestão de Fluxos Migratórios em Moçambique." Doctoral thesis, 2020. http://hdl.handle.net/10451/47811.
Повний текст джерелаThe object of study of this thesis is the control and management of migratory flows in Mozambique within the scope of the changes in migratory legislation that occurred after independence. The objective is to understand how immigration was perceived, understood managed in this period, considering the political-economic evolution, the legislative framework, and the control practices, namely at the country´s borders. Primarily, the study was based on the key literature review of the topic, on some statistical data, on evidences of changes in the legislation on migration and also on the perceptions and perspectives of Mozambican authorities and immigrants. The relevance of the former results from its central role in the regulatory framework and in the action related to the management and control of migration, with the latter constituing the population that is directly confronted with the structures of migratory management, being the final recipients of this. The data was collected through semi-structured interviews, Focus Groups with immigrants, direct observation at the Land Crossing Points of Ressano Garcia and Machipanda and at Maputo International Airport; as well as analysis of official documents (Annual Reports from the President of the Republic and the Attorney General to the National Assembly), titles and articles on immigration published in the Notícias de Moçambique newspaper and data contained in the landing cards filled out at Maputo International Airport. The study concluded that the thought experiences brought about by the anti-colonial struggle, the need to affirm the Mozambican identity, preservation and consolidation of the conquests of national independence in a context marked by the War of Destabilization between FRELIMO and RENAMO on the one hand and, by external threats from former Southern Rhodesia and South Africa, on the other, justified the adoption of a security approach of immigration management in the Socialist era, that was also marked by an explicit ideological dimension. The emergence of new threats in the Capitalist context characterized by the occurrence of Transnational Organized Crime, such as drug, human organs and human trafficking, smuggling, poaching, cattle theft and terrorism reinforce the guidances aiming the increase in security measures related the management of international human mobility in Mozambique, that are sometimes associated to stereotyped images of some groups of imigrants. On the oposite direction, it was possible to identify some elements present in the political discourse that recognize benefits associated with the immigrant presence and also the of migratory circulation, for instance within the efforts to promote free circulation in SADC. In summary, the conception and regulation of immigration in Mozambique has responded to the evolution of macro-economic contexts and their representaion, with continuities and discontinuities in relation to the security and free movement perspectives.
Ministério do Interior
Academia de Ciências Policiais