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2021. Seabirds of the Benguela Ecosystem: Utilisation, long-term changes and challenges. Birds - Challenges and opportunities for business, conservation and research Mikkola H
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| Seabirds of the Benguela Ecosystem.pdf | 990.95 KB |
2020. Geographical and temporal variation in the diet of Bank Cormorants Phalacrocorax neglectus in South Africa. Ostrich 90 (4) 373-390
2020. The conservation status and population decline of the African penguin deconstructed in space and time. Ecology and Evolution 10 (15) 8506-8516
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| The conservation status and population decline of the African penguin deconstructed in space and time.pdf | 965.34 KB |
2011. Collapse of South Africa's penguins in the early 21st century. African Journal of Marine Science 33 (1) 139-156
2010. Distribution, population size and conservation of the Cape gannet Morus capensis. South African Journal of Marine Science
1 (1) 153-174
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| Distribution_population size and conservation of the Cape gannet Morus capensis_2010.pdf | 1.97 MB |
2007. An altered carrying capacity of the Benguela upwelling ecosystem for African penguins (Spheniscus demersus). ICES Journal of Marine Science 64 570-576
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| An altered carrying capacity of the Benguela upwelling ecosystem for African penguins.pdf | 229.47 KB |
2007. Trends in numbers of Cape Cormorants (Phalacrocorax capensis) over a 50-year period, 1956-57 to 2006-08. Emu
107 1 - 9
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| Trends in numbers of Cape Cormorants.pdf | 253.71 KB |
2003. Sociable Weaver roadside nest densities in southern Namibia. Lanioturdus
36 (3) 12-17
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| Sociable Weaver roadside nest densities in southern Namibia.pdf | 301.93 KB |
1999. Seasonal pattern of breeding, population trend and conservation status of bank cormorants Phalacrocorax neglectus off south western Africa. Biological Conservation 87 (1) 49-58
1999. Decrease of African Penguins at the Possession Island group, 1956-1995: contrasting trends for colonial and solitary breeders. Marine Ornithology
27 129-138
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| Cordes_1999_Marine_Ornithology_27_129-138.pdf | 105.01 KB |
1996. Age at breeding of crowned cormorants Phalacrocorax coronatus. South African Journal of Marine Science
17 (1) 315-318
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| Age at breeding of crowned cormorants Phalacrocorax coronatus_1996.pdf | 454.6 KB |
1995. Responses by four seabird species to a fluctuating availability of Cape Anchovy Engralis capensis off South Africa. Ibis 137 (3) 329-339
1995. Conservation of an increasing population of Great White Pelicans Pelecanus onocrotalus in South Africa's Western Cape. South African Journal of Marine Science
15 33-42
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| Conservation of an increasing population of Great White Pelicans Pelecanus onocrotalus in South Africas Western Cape.pdf | 859.32 KB |
1995. Trends of African Penguin Spheniscus demersus populations in the 20th-century. South African Journal of Marine Science
16 (1) 101-118
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| Trends of African Penguin Spheniscus demersus populations in the 20th_century.pdf | 1.28 MB |
1995. Absence of breeding by African Penguins at 4 former colonies. South African Journal of Marine Science
15 269-272
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| Absence of breeding by African penguins at four former colonies_1995.pdf | 481.29 KB |
1994. Breeding nomadism in southern African seabirds: constraints, causes and conservation. Ostrich: Journal of African Ornithology 65 (2) 231-246
1993. Seasonal and interannual variation in the diet of 2 colonies of the Cape Gannet (Morus capensis) between 1977-78 and 1989. Colonial Waterbirds 16 1977 – 1978
1992. Top predators in the Benguela ecosystem - implications of their trophic position. South African Journal of Marine Science
12 (1) 675-687
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| Top predators in the Benguela ecosystem.pdf | 1.29 MB |
1989. Competition for space: recolonizing seals displace endangered endemic seabirds off Namibia. Biological Conservation 48 (1) 59-72
1985. Partitioning of a goby resource amongst four avian predators and evidence for altered trophic flow in the pelagic community of an intense perennial upwelling system. South African Journal of Science
3 (1) 215–228
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| Partitioning of a goby resource amongst 4 avian predators.pdf | 1.13 MB |
1984. Distribution, population size and conservation of the Jackass Penguin Spheniscus demersus. South African Journal of Marine Science
(2) 217 - 257
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| Distribution_population size and conservation of the Jackass Penguin Spheniscus demersus.pdf | 2.72 MB |
1983. Cape Cormorants as potential indicators of pelagic fish stocks off southern Africa. South Africa Journal of Science 79 466-468
1982. Taxonomy, distribution, population size, breeding and conservation of the Whitebreasted Cormorant Phalacrocorax carbo on the southern African coast. Gerfaut 72 188-200
1982. Taxonomy, distribution, population size and conservation of the Crowned Cormorant Phalacrocorax coronatus. Gerfaut 72 3 - 30
1982. Distribution, population size and conservation of the Cape Cormorant Phalacrocorax capensis. Fisheries Bulletin of South Africa
16 121 - 143
1982. Distribution, population size, breeding and conservation of the Kelp Gull in southern Africa. Ostrich: Journal of African Ornithology 53 (3) 164-177
1981. Population trends for some southern African seabirds related to fish availability. Proceedings of the Symposium on Birds of the Sea and Shore Cooper, J. 15-41
1981. The breeding population of White Pelicans Pelecanus onocrotalus at Bird Rock platform in Walvis Bay, 1949-1978. Fisheries Bulletin of South Africa 15 67 - 70
1980. Observations on the mortality of juvenile Cape Cormorants Phalacrocorax capensis during 1975 and 1979. Fisheries Bulletin of South Africa
(13) 69 - 75