Plant Habits And Habitats in the Arid Portions of South Australia
The book Plant Habits And Habitats in the Arid Portions of South Australia was written by author William Austin Cannon Here you can read free online of Plant Habits And Habitats in the Arid Portions of South Australia book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Plant Habits And Habitats in the Arid Portions of South Australia a good or bad book?
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Slight as is the present-day vegetation of the region, it perhaps is a matter for surprise that there is so much. Aside from the unfavorable physical environmental conditions which make for few plants, there are also biotic environmental elements which are relatively very destructive. Thus the region has supported and now supports an aboriginal population which depends wholly on natural products, animal and vegetable, for its living; and relatively recently the white inhabitants have drawn heav...ily on every useful native plant. Herbivorous animals of many kinds have alSo made destructive inroads on the vegetation. Just how all of these biotic factors have affected the flora as a whole will, of com-se, never be known, but that they are, and long have been, of great importance in many ways can not be seriously questioned. VEGETATION OF THE PLAINS. The vegetation of the plains was observed in four separate localities on the upper and on the lower plains. So far as these situations are concerned the perennial vegetation was found to be very meager indeed, but there were a few annuals which had sprung up following a small rain of the week preceding my visit.
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