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Sherley RB, Ludynia K, Lamont T, Roux J-P, Crawford RJM, Underhill LG 2013. The initial journey of an Endangered penguin: implications for seabird conservation. Endangered Species Research 21 89-95

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The initial journey of an Endangered penguin_implications for seabird conservation.pdf	144.13 KB

Kemper J, Underhill LG, Crawford RJM, Kirkman SP 2007. Chapter 42: Revision of the conservation status of seabirds and seals breeding in the Benguela Ecosystem. Final Report of the BCLME (Benguela Current Large Marine Ecosystem) Project on Top Predators as Biological Indicators of Ecosystem Change in the BCLME. Avian Demography Unit, Cape Town 325-342

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Revision of the conservation status of seabirds and seals breeding in the Benguela Ecosystem_2007.pdf	616.42 KB

Kemper J, Underhill LG, Crawford RJM, Kirkman SP 2007. Chapter 42: Revision of the conservation status of seabirds and seals breeding in the Benguela Ecosystem. Final report of the BCLME (Benguela Current Large Marine Ecosystem) project on top predators as Biological Indicators of Ecosystem Change in the BCLME Kirkman SP 325-342

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Conservation status of seabirds and seals breeding in Benguela Ecosystem.pdf	616.42 KB

Crawford RJM, Underhill LG, Upfold L, Dyer BM 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

Crawford RJM, Hemming M, Kemper J, Klages NTW, Randall RM, Underhill LG, Venter AD, Ward VL, Wolfaardt AC 2006. S24-2 Molt of the African penguin, Spheniscus demersus, in relation to its breeding season and food availability. Acta Zoologica Sinica 53 (Supplement) 444-447

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Crawford_2006_Acta_Zool_Sinica_Molt_Afrcn_Penguin.pdf	619.36 KB

Underhill LG, Crawford RJM 2005. Indexing the health of the environment for breeding seabirds in the Benguela ecosystem. ICES Journal of Marine Science 62 360e365

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Indexing the health of the environment for breeding seabirds in the Benguela ecosystem.pdf	104.18 KB

David JHM, Curry P, Crawford RJM, Randall RM, Underhill LG, Meÿer MA 2003. Assessing conservation priorities in the Benguela ecosystem, South Africa: analysing predation by seals on threatened seabirds. Biological Conservation 114 (2) 289-292

Website link:http://www.sciencedirect.com/science/article/pii/S0006320703000181

Crawford RJM, David JHM, Shannon LJ, Kemper J, Klages NTW, Roux J-P, Underhill LG, Ward VL, Williams AJ, Wolfaardt AC 2001. African penguins as predators and prey - coping (or not) with change. South African Journal of Marine Science 23 (1) 435-447

Website link:http://www.ingentaconnect.com/content/nisc/sajms/2001/00000023/00000001/art00032

Crawford RJM, Dyer BM, Cordes I, Williams AJ 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

Website link:http://www.sciencedirect.com/science/article/pii/S0006320798000421

Cordes I, Crawford RJM, Williams AJ, Dyer BM 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

Villacastin-Herrero CA, Underhill LG, Crawford RJM, Shannon LV 1996. Sea-surface temperature of oceans surrounding subequatorial Africa - seasonal patterns, spatial coherence and long-term trends. South Africa Journal of Science 92 189-197

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Sea_surface temperature of oceans surrounding subequatorial Africa.pdf	1.05 MB

Crawford RJM, Williams AJ, Hofmeyr JH, Klages NTW, Randall RM, Cooper J, Dyer BM, Chesselet Y 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

Berruti A, Underhill LG, Shelton PA, Moloney C, Crawford RJM 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

Crawford RJM, Underhill LG, Raubenheimer CM, Dyer BM, Martin J 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

Crawford RJM, Ryan PG, Williams AJ 1991. Seabird consumption and production in the Benguela and Western Agulhas ecosystems. South African Journal of Marine Science 11 357-375

Website link:http://www.ingentaconnect.com/content/nisc/sajms/1991/00000011/00000001/art00020;jsessionid=j6n95e9s5ae3.alexandra

Crawford RJM, Siegfried WR, Shannon LV, Villacastin-Herrero CA, Underhill LG 1990. Environmental-influences on marine biota off southern Africa. South Africa Journal of Science 86 330-339

Website link:https://www.researchgate.net/publication/292622490_Environmental_influences_on_marine_biota_off_Southern_Africa

Williams AJ, Steele WK, Cooper J, Crawford RJM 1990. Distribution, population-size and conservation of Hartlaub's Gull Larus hartlaubii. Ostrich: Journal of African Ornithology 61 (1-2) 66 – 76

Website link:http://www.tandfonline.com/doi/abs/10.1080/00306525.1990.9633941#.VHL6-1ItBHg

Cooper J, Crawford RJM, Suter W, Williams AJ 1990. Distribution, population-size and conservation of the Swift Tern Sterna bergii in southern Africa. Ostrich: Journal of African Ornithology 61 (1-2) 56 – 65

Website link:http://www.tandfonline.com/doi/abs/10.1080/00306525.1990.9633939#.VHsW62ctBHg

Crawford RJM, Williams AJ, Randall RM, Randall BM, Berruti A, Ross GJB 1990. Recent population trends of Jackass Penguins Spheniscus demersus off southern Africa. Biological Conservation 52 (3) 229 – 243

Website link:http://www.sciencedirect.com/science/article/pii/000632079090128C

Crawford RJM, Underhill LG, Venter JD 1990. Handline catches and stock identity of Snoek Thyrsites atun off South Africa and Namibia. South African Journal of Marine Science 9 95-99

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Handline catches and stock identity of Snoek Thyrsites atun off South Africa and Namibia.pdf	1.11 MB

Crawford RJM, David JHM, Williams AJ, Dyer BM 1989. Competition for space: recolonizing seals displace endangered endemic seabirds off Namibia. Biological Conservation 48 (1) 59-72

Website link:http://www.sciencedirect.com/science/article/pii/0006320789900591

Shannon LV, Crawford RJM, Brundrit GB, Underhill LG 1988. Responses of fish populations in the Benguela ecosystem to environmental change. Journal Du Conseil 45 5 – 12

Website link:https://doi.org/10.1093/icesjms/45.1.5

Crawford RJM, Williams AJ, Crawford PB 1986. A note on mortality of seabirds off western southern Africa, October 1985–February 1986. South African Journal of Marine Science 4 (1) 119-123

Website link:http://www.tandfonline.com/doi/abs/10.2989/025776186784461828#.VGXBClItBHg

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