Seasonal pattern of breeding, population trend and conservation status of bank cormorants Phalacrocorax neglectus off south western Africa

Biological Conservation

Volumn 87, Issue 1, 1999, Pages 49-58

  Crawford, Robert J M ^a   Dyer, Bruce M ^a   Cordes, Imke ^b   Williams, Anthony J ^c  

^a MARINE AND COASTAL MANAGEMENT   (South Africa)

^b MINISTRY OF FISHERIES AND MARINE RESOURCES   (Namibia)

^c CAPENATURE   (South Africa)

Author keywords

Bank cormorant; Breeding season; Conservation status; Namibia, population; South Africa

Indexed keywords

BREEDING POPULATION; CONSERVATION STATUS; POPULATION DECLINE; SEABIRD;

AFRICA;

EID: 0032889005     PISSN: 00063207     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0006-3207(98)00042-1     Document Type: Article

References (33)

1. Brooke, R.K., 1984. South African red data book - birds. South Africa National Scientific Programmes Report 97-213.
2. Collar, N.J., Stuart, S.N., 1985. Threatened Birds of Africa and Related Islands. ICBP/IUCN, Cambridge.
3. Cooper J. Biology of the bank cormorant. 1. Distribution, population size, movements and conservation. Ostrich. 52:1981;208-215.
4. Cooper J. New breeding locality data for southern African seabirds, bank cormorant Phalacrocorax neglectus. Crowned cormorant Phalacrocorax coronatus. Cormorant. 10:1982;57.
5. Cooper J. Biology of the bank cormorant. Morphometrics, plumage, bare parts and moult. Ostrich. 56:1985;79-85.
6. Cooper J. Marine cormorants breeding on the mainland at Stony Point, southern Cape, South Africa. Cormorant. 16:1988;55.
7. Crawford R.J.M. Factors influencing population trends of some abundant vertebrates in sardine-rich coastal ecosystems. South African Journal of Marine Science. 10:1991;365-381.
8. Crawford, R.J.M., 1997. Bank cormorant. In: Harrison, J.A., Allan, D.G., Underhill, L.G., Herremans, M., Tree, A.J., Parker, V., Brown, C.J. (Eds.), The Atlas of Southern African Birds. BirdLife South Africa, Johannesburg, pp. 34-35.
9. Crawford R.J.M., Dyer B.M. Age at breeding of Crowned cormorants Phalacrocorax coronatus. South African Journal of Marine Science. 17:1996;315-318.
10. Crawford R.J.M., Cruickshank R.A., Shelton P.A., Kruger I. 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 Marine Science. 3:1985;215-228.
11. Crawford, R.J.M., Shannon, L.V., Pollock, D.E., 1987. The Benguela ecosystem. 4. The major fish and invertebrate resources. In: Barnes, M. (Ed.), Oceanography and Marine Biology. An Annual Review 25. University Press, Aberdeen, pp. 353-505.
12. Crawford R.J.M., David J.H.M., Williams A.J., Dyer B.M. Competition for space: recolonising seals displace endangered, endemic seabirds off Namibia. Biological Conservation. 48:1989;59-72.
13. Crawford R.J.M., Ryan P.G., Williams A.J. Seabird consumption and production in the Benguela and Western Agulhas ecosystems. South African Journal of Marine Science. 11:1991;357-375.
14. Crawford R.J.M., Dyer B.M., Brooke R.K. Breeding nomadism in southern African seabirds - constraints, causes and conservation. Ostrich. 65:1994;231-246.
15. Crawford R.J.M., Dyer B.M., Brown P.C. Absence of breeding by African penguins at four former colonies. South African Journal of Marine Science. 15:1995;269-272.
16. Cruickshank R.A., Cooper J., Hampton I. Extension to the geographical distribution of pelagic goby Sufflogobius bibarbatus off South West Africa and some mensural and energetic information. Fisheries Bulletin South Africa. 13:1980;77-82.
17. Hall, R.E., Johnston, J., Lilien, D.M., 1990. MicroTSP User"s Manual. Quantitative Micro Software, Irvine, California.
18. Isaksen, K., Hofmeyr, G.J.G., Dyer, B.M., Næstvold, A., Mehlum, F., Gjertz, I., Bakken, V., Huyser, O., 1997. Preliminary results from CEMP-monitoring of Antarctic fur seals, chinstrap penguins and macaroni penguins at Bouvetøya 1996/97. CCAMLR Working Group Paper WG-EMM-97/20. CCAMLR, Hobart.
19. IUCN Species Survival Commission, 1994. IUCN Red List Categories. IUCN, Gland.
20. Kriel F., Crawford R.J.M., Shelton P.A., McLoughlin T. Seabirds breeding at Paternoster Rocks, Voëleiland and Hospital Rock between 1975 and 1980. Cormorant. 8:1980;81-86.
21. Kriel F., Crawford R.J.M., Shelton P.A. Seabirds breeding at Robben Island between 1949 and 1980. Cormorant. 8:1980;87-96.
22. Lewis-Smith R.I. Destruction of Antarctic terrestrial ecosysstems by a rapidly increasing fur seal population. Biological Conservation. 45:1988;55-72.
23. Matthews, S. (Ed.), 1995. Research Highlights 4 1994-1995. Sea Fisheries Research Institute, Cape Town.
24. Matthews, S. (Ed.), 1996. Research Highlights 5 1995-1996. Sea Fisheries Research Institute, Cape Town.
25. Rand R.W. The biology of guano-producing sea-birds. 3. The distribution, abundance and feeding habits of the cormorants Phalacrocoracidae off the south-western coast of the Cape Province. Investigational Report Division of Fisheries South Africa. 42:1960;1-32.
26. Shaughnessy P.D. Notes on Ladys Rocks. South West Africa. Madoqua. 12:1980;65-66.
27. Shaughnessy P.D., Goldsworthy S.D. Population size and breeding of Antarctic fur seal Arctocephalus gazella at Heard Island - 1987/88. Marine Mammal Science. 6:1990;292-304.
28. Shelton P.A., Brooke R.K. First seabird censuses of Seal Rock. Cormorant. 8:1980;20-22.
29. Shelton P.A., Crawford R.J.M., Kriel F., Cooper J. Methods used to census three species of southern African seabirds, 1978-1981. Fisheries Bulletin South Africa. 16:1982;115-120.
30. Siegfried W.R., Johnson P. The Damara tern and other seabirds on the Diamond Coast, South West Africa, December 1977. Cormorant. 3:1977;13.
31. Siegfried, W.R., Frost, P.G.H., Cooper, J., Kemp, A.C., 1976. South African red data book - Aves. South Africa National Scientific Programmes Report 7, vi, 108 pp.
32. Williams A.J. New seabird breeding localities, and an extension of bank cormorant range, along the Namib coast of southern Africa. Cormorant. 15:1987;98-102.
33. Williams A.J., Dyer B.M. The birds of Hollamsbird Island, least known of the southern African guano islands. Marine Ornithology. 18:1990;13-18.