Factors influencing growth of the African penguin colony at Boulders, South Africa, 1985-199

South African Journal of Marine Science

Volumn , Issue 22, 2000, Pages 111-119

  Crawford, R J M ^a   Shannon, L J ^a   Whittington, P A ^b   Murison, G ^b  

^a MARINE AND COASTAL MANAGEMENT   (South Africa)

^b UNIVERSITY OF CAPE TOWN   (South Africa)

Author keywords

[No Author keywords available]

Indexed keywords

COLONY; LIMITING FACTOR; POPULATION GROWTH; SEABIRD;

SOUTH AFRICA;

ANCHOA; AVES; ENGRAULIS CAPENSIS; ENGRAULIS ENCRASICOLUS; SPHENISCIDAE; SPHENISCUS DEMERSUS;

EID: 0034440444     PISSN: 02577615     EISSN: None     Source Type: Journal    
DOI: 10.2989/025776100784125780     Document Type: Article

References (32)

1. ADAMS, N. J., SEDDON, P. J. and Y. M. VAN HEEZIK 1992 - Monitoring of seabirds in the Benguela upwelling system: can seabirds be used as indicators and predictors of change in the marine environment? In Benguela Trophic Functioning. Payne. A. I. L., Brink, K. H., Mann, K. H. and R. Hilborn (Eds). S. Afr. J. mar. Sci. 12: 959-974.
2. BARANGE, M., HAMPTON, I. and B. A. ROEL 1999 - Trends in the abundance and distribution of anchovy and sardine on the South African continental shelf in the 1990s, deduced from acoustic surveys. S. Afr. J. mar. Sci. 21: 367-391.
3. BECKER, A. E. 1987 - The History of False Bay up to 1995. Simon's Town Historical Society: unpaginated.
4. BRONI, S. C. 1982 - First recorded mainland breeding by the jackass penguin Spheniscus demersus. Cormorant 10(2): p. 120.
5. COOPER, J. 1985 - New breeding locality data for southern African seabirds. Jackass penguin Spheniscus demersus. Cormorant 13(1): p. 81.
6. COOPER, J. and A. BERRUTI 1989 - The conservation status of South Africa's continental and oceanic islands. In Biotic Diversity in Southern Africa: Concepts and Conservation. Huntley, B. J. (Ed.). Cape Town; Oxford University Press: 239-253.
7. CORDES, I., CRAWFORD, R. J. M., WILLIAMS, A. J. and B. M. DYER 1999 - Decrease of African penguins at the Possession Island group, 1956-1995 - contrasting trends for colonial and solitary breeders. Mar. Ornithol. 27: 117-126.
8. CRAWFORD, R. J. M. 1998 - Responses of African penguins to regime changes of sardine and anchovy in the Benguela system. S. Afr. J. mar. Sci. 19: 355-364.
9. nd International Ornithological Congress, Durban, 1998. Adams, N. J. and R. H. Slotow (Eds). Johannesburg; BirdLife South Africa: 688-705.
10. CRAWFORD R. J. M., BOONSTRA, H. G. v. D., DYER, B. M. and L. UPFOLD 1995a - Recolonization of Robben Island by African penguins, 1983-1992. In The Penguins: Ecology and Management. Daan, P., Norman, I. and P. Reilly (Eds). Chipping Norton, Australia; Surrey Beatty & Sons: 333-363.
11. CRAWFORD, R. J. M. and B. M. DYER 1995 - Responses by four seabird species to a fluctuating availability of Cape anchovy Engraulis capensis off South Africa. Ibis 137: 329-339.
12. CRAWFORD, R. J. M., SHANNON, L. J. and P. A. WHITTINGTON 1999 - Population dynamics of the African penguin at Robben Island. Mar. Ornithol. 27: 135-143.
13. CRAWFORD, R. J. M., WILLIAMS, A. J., HOFMEYR, J. H., KLAGES, N. T. W., RANDALL, R. M., COOPER, J., DYER, B. M. and Y. CHESSELET 1995b - Trends of African penguin Spheniscus demersus populations in the 20th century. S. Afr. J. mar. Sci. 16: 101-118.
14. CRAWFORD, R. J. M. and P. A. WHITTINGTON 1997 - Jackass penguin. In Southern African Bird Atlas. 1. Non-passerines. Harrison, J. A., Allan, D. G., Underbill, L. G., Herremans, M., Tree, A. J., Parker, V. and C. J. Brown (Eds). Johannesburg; BirdLife South Africa: 4-5.
15. DAVIES, D. H. 1955 - The South African pilchard (Sardinops ocellata). Bird predators, 1953-4. Investl Rep. Div. Fish. S. Afr. 18: 32 pp.
16. DAVIES, D. H. 1956 - The South African pilchard (Sardinops ocellata) and maasbanker (Trachurus trachurus). Bird predators, 1954-55. Investl Rep. Div. Fish. S. Afr. 23: 40 pp.
17. DUFFY, D. C., WILSON, R. P. and A. BERRUTI 1985 - Anchovy in the diets of Dyer Island penguins: toward a test of two models of anchovy distribution. S. Afr. J. Sci. 81(9): 552-554.
18. HAMPTON, I. 1987 - Acoustic study on the abundance and distribution of anchovy spawners and recruits in South African waters. In The Benguela and Comparable Ecosystems. Payne, A. I. L., Gulland, J. A. and K. H. Brink (Eds). S. Afr. J. mar. Sci. 5: 901-917.
19. HAMPTON, I. 1992 - The role of acoustic surveys in the assessment of pelagic fish resources on the South African continental shelf. In Benguela Trophic Functioning. Payne, A. I. L., Brink, K. H., Mann, K. H. and R. Hilborn (Eds). S. Afr. J. mar. Sci. 12: 1031-1050.
20. HAMPTON, I. 1996 - Acoustic and egg-production estimates of South African anchovy biomass over a decade: comparisons, accuracy and utility. ICES J. mar. Sci. 53: 493-500.
21. JOHNSON, D. H. 1979 - Estimating nest success: the Mayfield method and an alternative. Auk 96: 651-661.
22. MAYFIELD, H. F. 1975 - Suggestions for calculating nest success. Wilson Bull. 87: 456-466.
23. McKENZIE, R. 1998 - Penguins, fertiliser, or 3:2:1 zero. The Cape Journal. Cape Town, September 1998: 8-11.
24. RAND, R. W. 1960 - The biology of guano-producing sea-birds. The distribution, abundance and feeding habits of the Cape penguin, Spheniscus demersus, off the south-western coast of the Cape Province. Investl Rep. Div. Fish. S. Afr. 41: 28 pp.
25. RANDALL, R. M. 1989 - Jackass penguins. In Oceans of Life off Southern Africa. Payne, A. I. L. and R. J. M. Crawford (Eds). Cape Town; Vlaeberg: 244-256.
26. RANDALL, R. M., RANDALL, B. M., COOPER, J. and P. G. H. FROST 1986 - A new census method for penguins tested on jackass penguins Spheniscus demersus. Ostrich 57: 211-215.
27. RANDALL, R. M., RANDALL, B. M., COOPER, J., LA COCK, G. D. and G. J. B. ROSS 1987 - Jackass penguin Spheniscus demersus movements, inter-island visits, and settlement. J. Fld Orn. 58(4): 445-455.
28. RYAN, P. G. 1998 - African Penguins at Boulders Coastal Park, Simon's Town: the Scientific Basis for Management Options. Cape Town; Percy FitzPatrick Institute of African Ornithology: 72 pp.
29. SHELTON, P. A., CRAWFORD, R. J. M., COOPER, J. and R. K. BROOKE 1984 - Distribution, population size and conservation of the jackass penguin Spheniscus demersus. S. Afr. J. mar. Sci. 2: 217-257.
30. UNDERHILL, L. G. and R. J. M. CRAWFORD 1999 - Season of moult of African penguins at Robben Island, South Africa, and its variation, 1988-1998. S. Afr. J. mar. Sci. 21: 437-441.
31. WHITTINGTON, P. A., HOFMEYR, J. H. and J. COOPER 1996 - Establishment, growth and conservation of a mainland colony of jackass penguins Spheniscus demersus at Stony Point, Betty's Bay, South Africa. Ostrich 67: 144-150.
32. WILSON, R. P. 1985 - Seasonally in diet and breeding success of the jackass penguin Spheniscus demersus. J. Orn., Lpz. 126: 53-62.