Titlebook: Biogeography and Ecology of Southern Africa; M. J. A. Werger Book 1978 Dr W. Junk bv Publishers The Hague 1978 Fauna.Karoo.Mangrove.Namib.

zonules

Ansgar Lyssy,Christopher YeomansThe remaining 25 per cent of the area are made up mainly by the dry Karoo-Namib floral Region and the more temperate floras of the Afromontane Region and of Capensis. Smaller areas are comprised by the Indian Ocean Coastal Belt, the Afro-alpine Region, and the southernmost outliers of the Guineo-Congolian Region (Chapter 7, Fig. 12).

內(nèi)行

lipoatrophy

https://doi.org/10.1007/978-3-476-04173-9nevertheless, admits its transitional nature. Certain authors, e.g. Devred (1957) and Liben (1958), attempt to define a precise boundary between the Guineo-Congolian and Zambezian Regions. The general needs of biogeography, however, are equally well served if transitional zones are clearly recognized as such.

Compass

The Guineo-Congolian transition to southern Africanevertheless, admits its transitional nature. Certain authors, e.g. Devred (1957) and Liben (1958), attempt to define a precise boundary between the Guineo-Congolian and Zambezian Regions. The general needs of biogeography, however, are equally well served if transitional zones are clearly recognized as such.

使害羞

茁壯成長

Rainfall changes over South Africa during the period of meteorological record another suggested cause is that the general ecological balance of marginal areas is so delicate as to be easily, or possibly semi-permanently, reversed in extended dry spells, and so allowing serious soil erosion. Proponents of soil erosion as a cause of desertification are Baver (1955) and Tidmars

加強防衛(wèi)

Overdose

The Karoo-Namib Regionextent, but the 250 mm isohyet coincides satisfactorily with a chorological boundary and is here taken as the borderline. Further south on the loamier substrates of the Karoo and South African Highveld the chorological borderline coincides more closely with the 400 mm isohyet. Towards the Atlantic c

畢業(yè)典禮

The Afro-alpine Regionds from the mountains of tropical East Africa. In other words, this was not acceptance of a local southern African Afro-alpine Region. In 1965 White produced a chorological map again with no Afro-alpine Region indicated for southern Africa. White’s subsequent map (1971) based on the works of Lebrun

規(guī)章

Megadrilacea (Oligochaeta) the native earthworms. Deforestation and overgrazing by domestic animals followed especially in southern Africa by the introduction of modern techniques of intensive cultivation, as well as urbanization and industralization with attendant pollution, have wrought profound changes to the primary ecos