The Manatee : Ecology and Use for Weed Control
SINCE 1885 the Botanic Gardens in Georgetown, British Guiana, has had in some ornamental pools manatees ( Trichechus manatus , order Sirenia), which have been always fed with grass by visitors. These pools have been kept clear by the manatees and it seemed always necessary to get additional food in...
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Veröffentlicht in: | Nature (London) 1960-11, Vol.188 (4752), p.762-762 |
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Sprache: | eng |
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