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Dissertations / Theses on the topic 'Birds, scotland'

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1

Creegan, Helen P. "Modelling the effects of changing habitat characteristics and spatial pattern on woodland songbird distributions in West and Central Scotland." Thesis, University of Stirling, 2005. http://hdl.handle.net/1893/48.

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This study investigated bird distributions in relation to local habitat and landscape pattern and the implications which habitat fragmentation may have for woodland birds. There were two sections to the research: an experimental study investigating bird gap crossing behaviour across distances of five to 120m; and an observational study modelling woodland bird distributions in relation to local habitat and landscape scale variables in two study areas (East Loch Lomond and the Central Scotland Forest). In the experimental study it was hypothesised that bird willingness to cross gaps will decreas
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2

Logie, John W. "Population ecology and lifetime reproductive success of dippers Cinclus cinclus." Thesis, University of Stirling, 1998. http://hdl.handle.net/1893/26684.

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Acidified catchments are known to hold significantly reduced dipper Cinclus cinclus populations throughout the year relative to circum-neutral rivers, although the processes leading to these declines remain unclear. This study considered the population ecology of dippers within the circumneutral River Devon catchment, Central Scotland, and focused primarily on determining the factors influencing survival, breeding probabilities and reproductive success. It aimed to examine the role of spatial variation in 'habitat quality' on the population (and meta-population) dynamics of dippers, based on m
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3

Kerlin, Douglas H. "Modelling the spatial and temporal dynamics of upland birds in Scotland." Thesis, University of Glasgow, 2009. http://theses.gla.ac.uk/879/.

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Population numbers change in space and time. The construction of models to investigate the spatial and temporal dynamics of populations may offer a means to identify the processes driving this change. In this thesis, we make use of models to examine the population ecology of three species of upland birds: red grouse, meadow pipit and capercaillie. Populations of red grouse in the British Isles exhibit cyclic fluctuations in abundance. Time series data from 287 grouse moors across the United Kingdom were analysed to investigate co-variation in these fluctuations. Results indicate high levels of
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4

Lavers, Christopher P. "Evaluation of habitat quality for the dunlin Calidris alpina schinzii (Brehm) in Caithness and Sutherland and an assessment of the impact of different land-uses on dunlin habitat." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283601.

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5

Thompson, Katherine Russell. "The ecology of the Manx shearwater Puffinus Puffinus on Rhum, West Scotland." Thesis, Connect to e-thesis, 1987. http://theses.gla.ac.uk/636/.

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Thesis (Ph.D.) - University of Glasgow, 1987.<br>Ph.D. thesis submitted to the Faculty of Biomedical and Life Sciences, Department of Environmental and Evolutionary Biology, Unversity of Glasgow, 1987. Includes bibliographical references. Print version also available.
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6

Newton, Stephen Francis. "Recruitment dynamics of a resident passerine : dippers Cinclus cinclus in Scotland." Thesis, University of Stirling, 1989. http://hdl.handle.net/1893/26698.

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1. This thesis presents the results of a population ecology study of the Dipper Cinclus cinclus in the western Ochil Hills, Tayside and Central Regions, Scotland between April 1985 and May 1988. 2. Particular attention was given to factors affecting juvenile survival between fledging and recruitment to the breeding population. These included investigation of the variation and significance of body size, plumage colour. dispersal distance, home range acquisition, dominance status and autumn body condition. 3. Overwinter survival was higher in adults than juveniles. Juvenile females had a greater
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7

Trinder, Mark Nicholas. "An investigation of matrix population model assumptions : wrens (Troglodytes troglodytes) as a case study." Thesis, University of Stirling, 2003. http://hdl.handle.net/1893/32.

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A simulation matrix population model of a small population of wrens (Troglodytes troglodytes) is presented. The field work methods used to obtain and analyse the demographic rates are provided. This includes a description of the use of miniature radio tags to track juvenile (post-fledging) survival and dispersal, and capture mark recapture analysis of an eight year dataset to estimate adult survival rates, taking into account environmental variation and density dependence. Age related reproductive rates were obtained from detailed nest surveys. Using these demographic rates (means and variance
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8

Carss, David N. "The effects of piscivorous birds on fish farms on the west coast of Scotland." Thesis, University of Edinburgh, 1988. http://hdl.handle.net/1842/13326.

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This problem of fish-eating birds was widespread at Scottish fish farms. Grey heron (<i>Ardea cinerea</i>), cormorant (<i>Phalacrocorax carbo</i>), shag (<i>Phalacrocorax aristotelis</i>), goosander (<i>Mergus merganser</i>) and red-breasted merganser (<i>Mergus serrator</i>), the principal species implicated, were studied in an area on the west coast of Scotland from September 1985 to August 1987. Data were also collected from farms in south Argyll, Highland and Tayside Regions. Herons visited both pond farms, taking fish in the shallows, and cages, taking fish through top nets. Fish were eit
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9

Dayawansa, Pathirana Nihal. "The distribution and foraging behaviour of wading birds on the Ythan estuary, Aberdeenshire in relation to macroalgal mats." Thesis, University of Aberdeen, 1995. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=158869.

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A general decrease in populations of waders on the Ythan estuary, Aberdeenshire, has coincided with an increased biomass of green algae on the intertidal mudflats. It was hypothesised that the reduction of bird numbers was due to the impact of macroalgal mats. The main objective of this study was to test the above hypothesis by investigating the impact of macroalgal mats on aspects of the behavioural ecology of waders, principally on their dispersion, diet and foraging behaviour. Redshank (<I>Tringa totanus</I> L.), curlew (<I>Numenius arquata</I> L.), oystercatcher (<I>Haematopus ostralegus</
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10

Finnicum, Nicole E. "Patterns of Avian Species Diversity Along an Urbanization Gradient in Edinburgh, Scotland." Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1338500714.

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11

Pennycott, Thomas William. "Diseases of wild birds of the orders Passeriformes and Columbiformes : a review of conditions reported from the United Kingdom and an analysis of results from wild bird disease surveillance in Scotland, 1994-2013." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/23001.

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There is growing concern about the impact of human activities on wildlife, both at the level of the individual animal and at a global population level, and the need for surveillance of wildlife for evidence of infectious and non-infectious diseases has never been greater. There is also much interest in attempting to help wildlife by treating and rehabilitating sick and injured wild animals and by providing supplementary feeding to garden birds. This thesis reviews the literature describing the diseases found in the United Kingdom (UK) in different birds of the orders Passeriformes and Columbif
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12

Porter, Rosalyn. "Mathematical models of a tick borne disease in a British game bird with potential management strategies." Thesis, University of Stirling, 2011. http://hdl.handle.net/1893/3039.

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Louping ill virus (LIV) is a tick borne disease that causes mortality in red grouse, an economically important game bird of British uplands. The aim of this thesis is to extend previously published models of LIV , to consider the potential impact of different management strategies. In addition a new route of infection and the seasonal biology of both grouse and ticks will be explored. Grouse chicks are known to eat ticks as part of their diet in the first three weeks of life which may contribute to virus persistence if chicks consume infected ticks. This novel route of infection is incorporate
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13

Crowther, Amy E. "The restoration of intertidal habitats for non-breeding waterbirds through breached managed realignment." Thesis, University of Stirling, 2007. http://hdl.handle.net/1893/334.

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Conservation of intertidal habitats in the UK is vital in order to continue to support nationally and internationally important populations of non-breeding waterbirds. Historic reclamation for agriculture and industry has resulted in the loss and degradation of large areas of these intertidal habitats in estuaries and they continue to be threatened by sea-level rise. Managed realignment is one method which is increasingly being used to restore intertidal habitats. As managed realignment is a relatively new restoration technique, the extent to which knowledge of the biology of estuaries is appl
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14

Cartwright, Ben Helmut John. "Making the cloth that binds us : the role of spinning and weaving in crafting the communities of Viking Age Atlantic Scotland (AD c.600-1400)." Thesis, University of Cambridge, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708804.

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15

Baxter, Alistair. "Understanding the factors associated with declines of an alpine specialist bird species in Scotland." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=231634.

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As we have become increasingly aware of the rapidity of climate change in high elevation and high latitude environments, conservation concern has grown for arctic-alpine species. This thesis capitalises on the rare availability of detailed data from intensive site monitoring and Scotland-wide surveys conducted over five decades and supplements this with new data to investigate the potential factors driving declines of Dotterel (Charadrius morinellus), an enigmatic arctic-alpine specialist bird species in decline. In accordance with expectations of predictions of climate warming, Dotterel shift
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16

Perkins, Allan John. "Causes of decline and conservation solutions for Corn Buntings Emberiza calandra in eastern Scotland." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/7764.

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The Corn Bunting Emberiza calandra is one of the most severely declining farmland birds across Europe. In the UK, numbers fell by 86% between 1967 and 2008. Corn Buntings favour open landscapes, nest on or close to the ground, are often polygynous, double-brooded, and have a seed-based diet supplemented in summer by invertebrates. This study investigated the recent causes of decline in arable and mixed farmland in eastern Scotland, and sought to identify potential conservation solutions that could be delivered through agri-environment schemes (AES). Combining new data with analyses of existing
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