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dc.contributor.authorTarras-Wahlberg, Nils
dc.coverage.spatialKenya, Rift Valley, Naivasha L.en_US
dc.date.accessioned2016-03-01T13:32:58Z
dc.date.available2016-03-01T13:32:58Z
dc.date.issued1986
dc.identifier.urihttp://hdl.handle.net/1834/8489
dc.description.abstractLake Naivasha is a freshwater lake in the Rift Valley of Kenya. It was infested in the 1960s by the floating fern Salvinia molesta Mitchell. This fern is indigenous to Brazil where it is apparently harmless. At lake Naivasha, as in several other inland waters of the tropical Old World, it is capable of an explosive population increase, and it can occupy the surface of calm nutrient-rich waters very quickly. By forming a surface-mat, it stops sunlight from reaching submerged plants and so it kills the submerged vegetation. This has resulted in serious setbacks to the local fishing industry. It is shown that in nutrient-rich waters young Salvinia has a doubling time of 4.5 days. Optimal growing conditions exist near Papyrus stands. Old mats of Salvinia may be invaded by vascular plants, and so a formation of sudd may start.en_US
dc.language.isoenen_US
dc.subject.otherFreshwater weedsen_US
dc.subject.otherAquatic plantsen_US
dc.subject.otherInfestationen_US
dc.titleObservations on Salvinia and its Environment at Lake Naivasha (Kenya).en_US
dc.typeJournal Contributionen_US
dc.bibliographicCitation.issue189en_US
dc.bibliographicCitation.titleJournal of the East Africa Natural History Society and National Museumen_US
dc.bibliographicCitation.volume76en_US
dc.description.statusPublisheden_US
dc.format.pagerangepp.1-8en_US
dc.type.refereedNot Knownen_US
refterms.dateFOA2021-01-30T18:47:36Z


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