2015 Fiscal Year Final Research Report
Mechanisms of species diversity in lotic Amphibia in Madagascar.
| Project/Area Number |
26640137
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Conservation of biological resources
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 生物多様性 / 両棲類 / 熱帯雨林 / マダガスカル / 種間相互作用 / ニッチ |
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| Outline of Final Research Achievements |
The objectives of this study is to claryfy coexistence process of amphibians and effects of species loss of the amphibian on stream ecosystems in Ranomafana National Park, Madagascar.
We conducted night visual and acoustic surveysin 12 streams in and around Ranomafana: primary forest, selectively logged forest and in adjacent degraded agricultural areas, and collected tadpoles and their potential food.
A total of 37 species and 2287 individuals of adult was recorded. Species richness was highest in premival forest and lowest in secondary forest. Species composition was affected by the vegetation. Tadpoles (4515 individuals) were classified to 5 types by their mouth parts. Values of stable isotope suggested that foods of tadpoles with generalized mouth is algae and animal remains, that of suctorial mouth is algae, and that of sandeater is decomposer or animal remains.
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| Free Research Field |
生態学
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