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Sherley RB, Crawford RJM, de Blocq AD, Dyer BM, Geldenhuys D, Hagen C, Kemper J, Makhado AB, Pichegru L, Upfold L, Visagie J, Waller LJ, Winker H 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

Dyer BM, Cooper J, Crawford RJM, Sherley RB, Somhlaba S, Cockcroft A, Upfold L, Makhado AB 2020. Geographical and temporal variation in the diet of Bank Cormorants Phalacrocorax neglectus in South Africa. Ostrich 90 (4) 373-390

Website link:https://www.ajol.info/index.php/ostrich/article/view/192097

Rae CMD, Boyd AJ, Crawford RJM 1992. Predation of anchovy by an Agulhas ring - a possible contributory cause of the very poor year-class of 1989. South African Journal of Marine Science 12 167-173

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Predation of anchovy by an Agulhas ring.pdf	739.3 KB

Villacastin-Herrero CA, Crawford RJM, Field JG 1992. Statistical correlations between purse-seine catches of chub mackerel off South Africa and selected environmental parameters. South African Journal of Marine Science 12 (1) 157-165

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Statistical correlations between purse seine catches of chub mackerel off South Africa and selected environmental parameters.pdf	677.24 KB

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, Allwright DM, Heyl CW 1992. High mortality of Cape Cormorants (Phalacrocorax capensis) off Western South Africa in 1991 caused by Pasteurella multocida. Colonial Waterbirds 15 236-238

Website link:http://www.jstor.org/stable/1521458

Shannon LV, Crawford RJM, Pollock DE, Hutchings L, Boyd AJ, Taunton-Clark J, Badenhorst A, Melville-Smith R, Augustyn CJ, Kochrane KL, Hampton I, Nelson G, Japp DW, Tarr RJQ 1992. The 1980s - a decade of change in the Benguela ecosystem. South African Journal of Marine Science 12 271 – 296

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The 1980s_a decade of change in the Benguela ecosystem.pdf	2.79 MB

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