Elevational Distribution and Ecology of Small Mammals on Tanzania's Second Highest Mountain

William T Stanley and Philip M Kihaule

PLOS ONE, 2016, vol. 11, issue 9, 1-15

Abstract: Mt. Meru is Tanzania’s second highest mountain and the ninth highest in Africa. The distribution and abundance of small mammals on this massif are poorly known. Here we document the distribution of shrews and rodents along an elevational gradient on the southeastern versant of Mt. Meru. Five sites were sampled with elevational center points of 1950, 2300, 2650, 3000, and 3600 m, using a systematic methodology of standard traps and pitfall lines, to inventory the shrews and rodents of the slope. Ten species of mammal were recorded, comprising 2 shrew and 8 rodent species with the greatest diversity for each group at 2300 m. No species previously unrecorded on Mt. Meru was observed. Two rodent genera that occur in nearby Eastern Arc Mountains (Hylomyscus and Beamys) were not recorded. The rodent Lophuromys verhageni and a recently described species of shrew, Crocidura newmarki, are the only endemic mammals on Mt. Meru, and were widespread across the elevational gradient. As in similar small mammal surveys on other mountains of Tanzania, rainfall positively influenced trap success rates for shrews, but not for rodents. This study provides new information on the local small mammal fauna of the massif, but numerous other questions remain to be explored. Comparisons are made to similar surveys of other mountains in Tanzania.

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0162009

DOI: 10.1371/journal.pone.0162009

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