Zobrazeno 1 - 7
of 7
pro vyhledávání: '"W. Herman Oosthuizen"'
Autor:
Robert James Minchin Crawford, Azwianewi B Makhado, Philip A Whittington, Rod M Randall, W Herman Oosthuizen, Lauren J Waller
Publikováno v:
Frontiers in Ecology and Evolution, Vol 3 (2015)
In the southern Benguela ecosystem off South Africa, there were recent shifts to the south and east in the distributions of three forage resources (anchovy, sardine, rock lobster), which probably were influenced by environmental change although fishi
Externí odkaz:
https://doaj.org/article/f56c3120659341bf96aa7e6577c5779c
Publikováno v:
Journal of Marine Systems. 188:133-141
Ten of the 15 seabird species that breed in the Benguela upwelling ecosystem, including six species that are endemic to it, are now classified as threatened or near-threatened in terms of Red List criteria. Both bottom-up (operating from lower in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7472c141c4625e7f35b9a9b4d519860d
https://doi.org/10.1016/j.jmarsys.2017.04.004
https://doi.org/10.1016/j.jmarsys.2017.04.004
Autor:
Bruce M. Dyer, W. Herman Oosthuizen, Robert J. M. Crawford, Louise Geldenhuys, Azwianewi B. Makhado
Publikováno v:
Ostrich: Journal of African Ornithology; Vol 89, No 4 (2018); 299-305
Numbers of eight seabird species that have bred in coastal areas of South Africa’s arid Northern Cape province have all shown substantial decreases since initial estimates of their abundance were made in the latter part of the twentieth century. Li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dca6954590ed9a8d83ffe742b30cd57
https://www.ajol.info/index.php/ostrich/article/view/181523
https://www.ajol.info/index.php/ostrich/article/view/181523
Autor:
Ryan Johnson, Marthán N Bester, Michael F. Meyer, Enrico Gennari, W. Herman Oosthuizen, Sheldon F. J. Dudley, Lisa Hancke
Publikováno v:
Environmental Biology of Fishes. 85:189-200
Between June and December 2005, active and passive acoustic telemetry was used to examine fine scale movements of 13 white sharks (Carcharodon carcharias) (ten passive, three active) at Mossel Bay. A total of 24 active trackings (ranging from 2 h to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35c79dfb32358e24d4d22ef030889dfd
https://doi.org/10.1007/s10641-009-9477-4
https://doi.org/10.1007/s10641-009-9477-4
Publikováno v:
Marine Ecology Progress Series. 338:199-209
Ecotourism operations which provide food to large predators have the potential to neg- atively affect their target species, by conditioning them to associate humans with food, or by gener- ally altering their behavioural patterns. This latter effect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27a6cf4c7b894cf78e6a4d4f8073b22b
https://doi.org/10.3354/meps338199
https://doi.org/10.3354/meps338199
Autor:
Kevin R. Nicholas, Kylie N. Cane, John P. Y. Arnould, Julie A. Sharp, Sonia L. Mailer, W. Herman Oosthuizen
Publikováno v:
Matrix Biology. 25:430-442
Few models are in place for analysis of extreme lactation patterns such as that of the fur seals which are capable of extended down regulation of milk production in the absence of involution. During a 10-12 month lactation period, female fur seals su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cce4fa06c90ce4d765a807f1ffef338f
https://doi.org/10.1016/j.matbio.2006.05.003
https://doi.org/10.1016/j.matbio.2006.05.003
Autor:
W. Herman Oosthuizen, R. W. Leslie, Pierre Fréon, Almudena Fernández Moreno, Jeremy H.M. David, Laurent Drapeau, Lynne J. Shannon, Carl D. van der Lingen
Publikováno v:
ICES Journal of Marine Science. 62:459-468
Based on published distribution maps of 15 key fish species, foraging areas of three top predators during their breeding season, and fishing grounds of the main commercial fleets in the southern Benguela ecosystem, seven spatialized ecosystem indicat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::409c257f366f76db06aacbbdc4087202
https://doi.org/10.1016/j.icesjms.2004.12.010
https://doi.org/10.1016/j.icesjms.2004.12.010