Zobrazeno 1 - 8
of 8
pro vyhledávání: '"M. D. Greyling"'
Autor:
John Cooper, Deon Nel, S. L. Petersen, N. T. W. Klages, A. C. Wolfaardt, Jeanne L. Nel, R. J. M. Crawford, B. M. Dyer, M. D. Greyling
Publikováno v:
African Journal of Marine Science. 25:487-498
The number of eastern rockhopper penguins Eudyptes chrysocome filholi breeding at subantarctic Marion Island decreased from about 173 000 pairs in 1994/95 to about 67 000 pairs in 2001/02. During 1994/95–2002/03 pairs fledged on average 0.40 chicks
Autor:
D. G. Keith, Jeanne L. Nel, M. D. Greyling, C. L. Holness, B. Hanise, A. C. Wolfaardt, B. M. Dyer, R. J. M. Crawford, M. Du Toit, K. Spencer, D. Tshingana, S. L. Petersen, John Cooper
Publikováno v:
African Journal of Marine Science. 25:537-547
The number of Crozet shags or cormorants Phalacrocorax [atriceps] melanogenis breeding at subantarctic Marion Island decreased by 68% from 841 pairs in 1994/95 to 272 pairs in 2002/03. The mean number of pairs at colonies also decreased and was signi
Autor:
M. D. Greyling, M. Du Toit, R. J. M. Crawford, S. L. Petersen, K. Spencer, D. G. Keith, Jeanne L. Nel, B. Hanise, C. L. Holness, John Cooper, D. Tshingana, A. C. Wolfaardt
Publikováno v:
African Journal of Marine Science. 25:463-474
The numbers of gentoo penguins Pygoscelis papua breeding at subantarctic Marion Island fell by 40% from 1994/95 to 2002/03, from 1 352 pairs to 806 pairs. Apart from a slight increase in 1998/99, there was a steady decrease in numbers breeding betwee
Publikováno v:
African Journal of Ecology. 39:51-58
The habitat preferences of two closely related millipede species, Centrobolus richardii and C. fulgidus, were investigated on three different seral stages of a coastal dune forest successional sere north of Richards Bay, South Africa. Fixed-width tra
Publikováno v:
Biology of Reproduction. 58:60-64
The modulatory effects of gestational age and circulating concentrations of progesterone, 5-pregnane-3,20-dione, and estradiol-17 on the uterine sex steroid hormone receptor levels of the African elephant were investigated. Uterine tissue biopsies an
Publikováno v:
Biology of reproduction. 58(1)
The modulatory effects of gestational age and circulating concentrations of progesterone, 5alpha-pregnane-3,20-dione, and estradiol-17beta on the uterine sex steroid hormone receptor levels of the African elephant were investigated. Uterine tissue bi
Publikováno v:
Scopus-Elsevier
The ligand specificity of progesterone and oestrogen receptors in the uteri of four nonpregnant, nonlactating African elephants, killed during routine culling in the Kruger National Park, were determined. The mean (+/-SEM) Kd values of the oestrogen
Autor:
Peter G. Ryan, Dagmar Merkle, Robert J. M. Crawford, D. Tshingana, P.A. Whittington, T. M. Leshoro, M. Du Toit, W. Wilkinson, Azwianewi B. Makhado, John Cooper, N. T. W. Klages, B. M. Dyer, M. D. Greyling, M De Villiers, Leslie G. Underhill, M S Mason, L Upfold, V.L. Ward, S. L. Petersen, S du Plessis
Publikováno v:
Scopus-Elsevier
African Journal of Marine Science; Vol 25 (2003); 427-440
African Journal of Marine Science; Vol 25 (2003); 427-440
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 penguins Eu
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