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Browsing PhD / Doctoral by Department "Percy FitzPatrick Institute of African Ornithology"

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Aspects of plant dispersal in the southwestern Cape with particular reference to the roles of birds as dispersal agents

Author: Knight, Richard Spencer ; Knight, Richard Spencer Date: 1988 The dispersal of plants with particular attention to the roles birds play as dispersal agents was studied in the southwestern Cape, South Africa from 1983 to 1985. The research was organized as ten inter-related studies, each with an independent ... Read more
Aspects of the ecology of migrant shorebirds (Aves: Charadrii) at the Berg River estuary, South Africa

Author: Kalejta, Bozena Date: 1992 The waterbird populations of the Berg River estuary, South Africa, were studied from September 1987 to April 1989. The main objectives of the study were to assess the importance of the estuary for Palearctic-breeding migratory waders and to ... Read more
Behavioural ecology of Peregrine and Lanner falcons in South Africa

Author: Jenkins, Andrew Robert Date: 1998 The Peregrine Falcon Falco peregrinus is a specialized predator of birds. It occurs almost worldwide but is generally uncommon. In many areas, it is sympatric with one of a complex of similar, less specialized, congeneric species (subgenus ... Read more
Biogeography and conservation of terrestrial afrotropical birds

Author: De Klerk, Helen Margaret Date: 1999 This study aimed to describe patterns of distribution in terrestrial Afrotropical birds, to investigate the causes of these patterns, and examine how aspects of distributional patterns may be used to prioritize local regions for conservation ... Read more
Biogeography and ecology of African waterbirds

Author: Guillet, Alfredo Date: 1986 Patterns of distribution and diversity for African waterbirds are investigated at the continental, sub-continental, ecosystem and species levels. The focal species is the Great White Pelican Pelecanus onocrotalus, one of South Africa's 'Red ... Read more
Breeding and dispersal implications for the conservation of the Southern Ground Hornbill Bucorvus leadbeateri

Author: Carstens, Kate Date: 2017 Populations of secondary tree-cavity nesting bird species are often limited by a shortage of natural nesting sites. For the Southern Ground Hornbill Bucorvus leadbeateri that typically nests in natural tree cavities, the shortage of nesting ... Read more
Breeding Jackass Penguins as pelagic predators

Author: Wilson, Rory Paul Date: 1986 The foraging of breeding Jackass Penguins Spheniscus demersus was studied in and around southwestern Cape Province, Saldanha Bay (33⁰ S, 18⁰ E), South Africa. Penguins are difficult to observe at sea. Hence, I devised a number of new techniques ... Read more
Comparative foraging ecology of macaroni and rockhopper penguins at the Prince Edward Islands

Author: Whitehead, Thomas Otto Date: 2017 Penguins are one of the largest consumers of marine resources in the Southern Ocean and spend most of their lives at sea. Although the last four decades have seen technological advancements that have considerably expanded our knowledge about ... Read more
A conservation genetic study of threatened, endemic southern African seabirds

Author: Nupen, Lisa Jane Date: 2014 Molecular techniques have a broad, and growing, application in the field of wildlife conservation, ranging from the systematic identification and classification of taxa, through studying genetic connectivity between populations, to parentage ... Read more
Cooperative breeding and delayed dispersal in the Pale chanting goshawk, Melierax canorus

Author: Malan, Gerard Date: 1995 A population of Pale Chanting Goshawks Melierax canorus, some of which live in families, was studied during 1988-1992 for a total of 117 group-years near Calitzdorp, South Africa. The aims of the study were to identify ecological and social ... Read more
Dominance, social organisation and cooperation in the sociable weaver (Philetairus socius)

Author: Rat, Margaux Emilie Therese Date: 2015 Sociality and cooperation are universal features of life, yet cooperative societies are highly vulnerable to conflicts-of-interests which may lead to societal collapse. Dominance may function as a central mechanism behind the maintenance of ... Read more
Ecological energetics of Eudyptes penguins at Marion Island

Author: Brown, Christopher Raymond Date: 1987 Macaroni Penguins (Eudyptes chrysolophus) and Rockhopper Penguins (E. chrysocome) breed sympatrically at Marion Island in the sub-Antarctic, where they account for a substantial proportion of the avian biomass breeding at the island. This ... Read more
Ecology of the Verreaux's eagle Aquila verreauxii in natural and agriculturally transformed habitats in South Africa

Author: Murgatroyd, Sarah Megan Date: 2016 Agricultural transformation generally has a negative impact on biodiversity. Owing to landscape fragmentation and reduced prey availability, predators that inhabit transformed areas are usually forced to increase hunting effort or diversify ... Read more
Environmental factors influencing the breeding and health of a predator endemic to southern Africa: the endangered Black Harrier Circus Maurus

Author: García-Heras, Marie-Sophie Date: 2017 A general and increasing biodiversity loss has been observed since the 20th century. Faced with the extreme rapidity of population declines, conservation biologists seek to understand the limiting and regulating factors driving changes in ... Read more
Environmental influences on moult and movement strategies in southern African waterfowl

Author: Ndlovu, Mduduzi Date: 2012 Waterfowl annual life history events in north-temperate regions are driven primarily by predictable seasonal variations in temperature. In contrast, the spatio-temporal availability of adequate resources to waterfowl in the semi-arid regions ... Read more
Exploring the maintenance of plumage polymorphism in the Black Sparrowhawk

Author: Tate, Gareth John Date: 2016 Animals often display striking variation with respect to their phenotype. Intraspecific and interspecific variation in body colour represents one of the most well studied forms of phenotypic variation. For decades evolutionary biologists have ... Read more
Faunal turnover between east and southern African terrestrial vertebrates: is Malawi the geographical break?

Author: Kaliba, Potiphar Menaheim Date: 2014 The study centred on the investigation of phylogeographic structure within three forest associated bird species and two small mammal species, as well as two woodland associated bird species distributed across the Malawi Rift of Africa. The ... Read more
Fine-scale drivers of African Penguin prey dynamics in Algoa Bay, South Africa, and their impacts on penguin foraging ecology

Author: Mcinnes, Alistair McIntyre Date: 2016 African Penguins (Spheniscus demersus) have undergone a dramatic decrease in their population since the turn of this century prompting the up-grading of their conservation status to 'endangered'. There is growing evidence that variation in ... Read more
Going through the motions : the impacts of frequent fires and grazing pressure on reproduction of Montane grassland birds

Author: Muchai, Samuel Muchane Date: 2002 Land management practices have been implicated as a cause for the decline of many grassland-nesting birds across the globe. While this effect has motivated extensive research and conservation in the developed northern hemisphere, it remains ... Read more
The impact of longline fishing on the seabirds breeding on Marion Island

Author: Nel, Deon Charl Date: 2002 This study describes the impact of longline fishing on the seabirds breeding on the sub-Antarctic Prince Edward Islands. The development of a demersal longline fishery for Patagonian toothfish Dissostichus eleginoides close to the islands ... Read more

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