碩士 / 國立成功大學 / 生命科學系 / 102 / Species have been observed to move upward and polewards due to climate warming. However, such evidence is scarce for endotherm or from tropical areas. We investigated whether Taiwan’s Rodentia have moved to higher elevation as expected from climate warming. Mountain temperature in Taiwan has increased for 0.30°C for the past 50 years (1960-2009). For the study period (1925-1933 to 1992-2009), 5 species (56%, out of 9 species in consideration) shifted their upper elevational boundary upward; 7 species (64%, out of 11 species in consideration) contracted their lower boundary upward. The peak of species richness shifted to higher elevation. Biological traits, e.x. snout vent length, activity time, diet types, and habitat types, showed little correlation with species boundary changes, except that diurnal species shifted their upper boundaries more than nocturnal species. We applied MaxEnt to model species distribution changes under RCP 2.6 and RCP 8.5 scenarios. Most species (67% and 75% in RCP 2.6 and RCP 8.5 respectively) will move to higher ground in 2070; however, species richness will decline in the west part of Central Mountain Range under RCP 2.6 scenario and decline in the north part of Central Mountain Range under RCP 8.5 scenario from current to 2070.
| Identifer | oai:union.ndltd.org:TW/102NCKU5105116 |
| Date | January 2014 |
| Creators | Yuan-TaiTsai, 蔡元泰 |
| Contributors | I-Ching Chen, 陳一菁 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 114 |
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