The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 195
... occur in seasonally inundated areas of larger river valleys . They are partly maintained by intense dry - season fires , which burn off the dead grass and pro- mote renewal ; they constitute true edaphic climax vegeta- tion ( that is to ...
... occur in seasonally inundated areas of larger river valleys . They are partly maintained by intense dry - season fires , which burn off the dead grass and pro- mote renewal ; they constitute true edaphic climax vegeta- tion ( that is to ...
Page 200
... occurs most notably in Nigeria's Jos Plateau , as well as in Mali , in Ghana , and in Guinea . Similar deposits occur in Central and East Africa , as well as in southern Africa . Bentonite ( a clay formed from decomposed volcanic ash ...
... occurs most notably in Nigeria's Jos Plateau , as well as in Mali , in Ghana , and in Guinea . Similar deposits occur in Central and East Africa , as well as in southern Africa . Bentonite ( a clay formed from decomposed volcanic ash ...
Page 493
... occur on plants found at the mouths of estuaries , on salt marshes , and in mangrove swamps reduce the available light , and some algae can- not survive the resulting decrease in the rate of photo- synthesis . Other algae achieve an ...
... occur on plants found at the mouths of estuaries , on salt marshes , and in mangrove swamps reduce the available light , and some algae can- not survive the resulting decrease in the rate of photo- synthesis . Other algae achieve an ...
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