Leshia Upfold

Collapse of South Africa's penguins in the early 21st century

RJM Crawford, Res Altwegg, B. J. Barham et al. · African Journal of Marine Science · 2011 · 158 citations

Engineering, South African History, South-south Cooperation +12

The influence of food availability on breeding success of African penguins Spheniscus demersus at Robben Island, South Africa

Robert J. M. Crawford, Peter Barham, Les G Underhill et al. · Biological Conservation · 2006 · 106 citations

Breeding Behavior, Foraging, Robben Island +4

Initial impact of the <i>Treasure</i> oil spill on seabirds off western South Africa

Robert J. M. Crawford, Scott Davis, R. T. Harding et al. · South African Journal of Marine Science · 2000 · 75 citations · Full text

Western South Africa, Coastal Engineering, Engineering +10

Trends in numbers of Cape gannets (Morus capensis), 1956/1957–2005/2006, with a consideration of the influence of food and other factors

Robert J. M. Crawford, Benedict L. Dundee, Bruce M. Dyer et al. · ICES Journal of Marine Science · 2006 · 74 citations · Full text

Population Size, Engineering, Wildlife Ecology +14

An altered carrying capacity of the Benguela upwelling ecosystem for African penguins (Spheniscus demersus)

Robert J. M. Crawford, Les G Underhill, Leshia Upfold et al. · ICES Journal of Marine Science · 2007 · 66 citations · Full text

Biodiversity, Foraging, Engineering +11