OpenUCT Home
→
Browsing by Author

Browsing by Author "Underhill, L G"

Now showing items 1-8 of 8

Breeding success of African penguins Spheniscus demersus at Dassen Island, especially after oiling following the Apollo Sea spill

Author: Wolfaardt, A C ; Underhill, L G ; Nel, D C ; Williams, A J ; Visagie, J Date: 2008 The reproductive success of African penguins Spheniscus demersus at Dassen Island from 1994 to 2000 was variable, but much higher than previously reported figures for the species. Breeding success was positively related to the abundance of ... Read more
Impact of flipper-banding on breeding success of African penguins Spheniscus demersus at Robben Island: comparisons among silicone rubber bands, stainless-steel bands and no bands

Author: Barham, P J ; Underhill, L G ; Crawford, R J M ; Leshoro, T M ; Bolton, D A Date: 2008 From 2001 to 2006, two new designs of flipper bands made from silicone rubbers were tested on African penguins Spheniscus demersus at 365 nests on Robben Island, South Africa. We compared, over six years, the breeding success, from hatching ... Read more
Making sense of censuses and dealing with missing data: trends in pup counts of Cape Fur Seals Arctocephalus pusillus pusillus between 1972-2004

Author: Kirkman, S P ; Oosthuizen W H ; Meÿer, M A ; Kotze, P G H ; Roux, J-P ; Underhill, L G Date: 2007 Trends in the population of Cape fur seals Arctocephalus pusillus pusillus were estimated from counts of pups on aerial photographs of colonies taken between 1972 and 2004 to determine trends in the overall population and subpopulations. ... Read more
Populations of surface-nesting seabirds at Marion Island, 1994/5-2002/3

Author: Crawford, R J M ; Cooper, J ; Dyer, B M ; Greyling, M D ; Klages, N T W ; Ryan, P G ; Petersen, S L ; Underhill, L G ; Upfold, L ; Wilkinson, W ; De Villiers, M S ; Du Plessis, S ; Du Toit, M ; Leshoro, T M ; Makhado, A B ; Mason, M S ; Merkle, D ; Tshingana, D ; Ward, V L ; Whittington, P A Date: 2003 During the 1990s and early 2000s, populations of surface-nesting seabirds at Marion Island showed different trends, but for the majority of species numbers decreased. Reduced numbers of gentoo penguins Pygoscelis papua, eastern rockhopper ... Read more
Range expansion of the Red-billed Quelea, Quelea quelea, into the Western Cape, South Africa

Author: Oschadleus, H D ; Underhill, L G Date: 2006 The red-billed quelea, Quelea quelea, is a serious problem bird of cultivated grain throughout Africa. It has expanded its range in different parts of southern Africa. Recent sightings over the last seven years in the Western Cape indicate ... Read more
Restoration of oiled African penguins Spheniscus demersus a decade after the Apollo Sea spill

Author: Wolfaardt, A C ; Underhill, L G ; Altwegg, R ; Visagie, J Date: 2008 The bulk ore carrier Apollo Sea sank south-west of Dassen Island off western South Africa in June 1994, oiling approximately 10 000 African penguins Spheniscus demersus, most of which were collected from Dassen Island. A total of 4 076 de-oiled ... Read more
The management of Avian Cholera Pasteurella multicida outbreaks on Dyer Island, South Africa, 2002-2005

Author: Waller, L J ; Underhill, L G Date: 2007 In 2002 there was a widespread epizootic involving seabirds on five of the offshore islands of the Western Cape, South Africa. Since then, avian cholera Pasteurella multocida outbreaks have been occurring annually on one of these islands, ... Read more
The seminal legacy of the Southern African Bird Atlas Project

Author: Harrison, J A ; Underhill, L G ; Barnard, P Date: 2008 The first Southern African Bird Atlas Project was launched in 1986 and gathered bird distribution data from six countries of southern Africa. The project culminated with the publication of The Atlas of Southern African Birds in 1997. The ... Read more

Now showing items 1-8 of 8

Browse

All of OpenUCT

Browsing by Author "Underhill, L G"

Browsing by Author "Underhill, L G"

Browse

All of OpenUCT