A study of the ecology of the Namaqua Sandgrouse and other arid-zone birds

dc.contributor.advisorCrowe, Timothy Men_ZA
dc.contributor.authorLloyd, Pennen_ZA
dc.date.accessioned2014-11-16T20:00:06Z
dc.date.available2014-11-16T20:00:06Z
dc.date.issued1998en_ZA
dc.descriptionBibliography: leaves [148]-164.en_ZA
dc.description.abstractThis field study set out to identify the key ecological factors influencing the population dynamics of the Namaqua Sandgrouse Pterocles namaqua, through an investigation of diet and the nutritional demands during different stages of the annual cycle, the timing of breeding seasons and movements in relation to patterns of rainfall-dependent food availability, breeding success and the factors limiting productivity. In addition, the nesting habits and success of 11 coexisting arid-zone bird species were examined to test a variety of hypotheses regarding the relationship between nest-predation rate and nest site, nest density, predator-avoidance behaviour, stage of the nesting cycle and season, and degree of residency. Furthermore, the importance of rainfall as a breeding stimulus and its effects on clutch size were investigated for several species. The Namaqua Sandgrouse is an obligate granivore at all times, feeding on the seeds of annual plants, primarily of the family Fabaceae. Even while breeding, energy is the first-limiting nutrient in the foods of adults. Growing chicks have a proportionally greater protein demand, and are more dependent than adults on protein-rich legume seeds to satisfy first-limiting amino acid requirements. The chick growth phase was identified as the most nutritionally demanding stage in the annual cycle. The breeding season was found to be unexpectedly variable, and not consistently correlated with periods of peak food availability.en_ZA
dc.identifier.apacitationLloyd, P. (1998). <i>A study of the ecology of the Namaqua Sandgrouse and other arid-zone birds</i>. (Thesis). University of Cape Town ,Faculty of Science ,Percy FitzPatrick Institute of African Ornithology. Retrieved from http://hdl.handle.net/11427/9680en_ZA
dc.identifier.chicagocitationLloyd, Penn. <i>"A study of the ecology of the Namaqua Sandgrouse and other arid-zone birds."</i> Thesis., University of Cape Town ,Faculty of Science ,Percy FitzPatrick Institute of African Ornithology, 1998. http://hdl.handle.net/11427/9680en_ZA
dc.identifier.citationLloyd, P. 1998. A study of the ecology of the Namaqua Sandgrouse and other arid-zone birds. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Lloyd, Penn AB - This field study set out to identify the key ecological factors influencing the population dynamics of the Namaqua Sandgrouse Pterocles namaqua, through an investigation of diet and the nutritional demands during different stages of the annual cycle, the timing of breeding seasons and movements in relation to patterns of rainfall-dependent food availability, breeding success and the factors limiting productivity. In addition, the nesting habits and success of 11 coexisting arid-zone bird species were examined to test a variety of hypotheses regarding the relationship between nest-predation rate and nest site, nest density, predator-avoidance behaviour, stage of the nesting cycle and season, and degree of residency. Furthermore, the importance of rainfall as a breeding stimulus and its effects on clutch size were investigated for several species. The Namaqua Sandgrouse is an obligate granivore at all times, feeding on the seeds of annual plants, primarily of the family Fabaceae. Even while breeding, energy is the first-limiting nutrient in the foods of adults. Growing chicks have a proportionally greater protein demand, and are more dependent than adults on protein-rich legume seeds to satisfy first-limiting amino acid requirements. The chick growth phase was identified as the most nutritionally demanding stage in the annual cycle. The breeding season was found to be unexpectedly variable, and not consistently correlated with periods of peak food availability. DA - 1998 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1998 T1 - A study of the ecology of the Namaqua Sandgrouse and other arid-zone birds TI - A study of the ecology of the Namaqua Sandgrouse and other arid-zone birds UR - http://hdl.handle.net/11427/9680 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/9680
dc.identifier.vancouvercitationLloyd P. A study of the ecology of the Namaqua Sandgrouse and other arid-zone birds. [Thesis]. University of Cape Town ,Faculty of Science ,Percy FitzPatrick Institute of African Ornithology, 1998 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/9680en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentPercy FitzPatrick Institute of African Ornithologyen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherZoologyen_ZA
dc.titleA study of the ecology of the Namaqua Sandgrouse and other arid-zone birdsen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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