Literaturdatenbank
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Tsai, C.-F. (2007). Daily activity patterns and home range of cuora flavomarginata in a monsoon forest in southern taiwan. Unpublished thesis Master, National Cheng Kung University, Tainan City.
Added by: Admin (28 Dec 2009 19:57:13 UTC) |
| Resource type: Thesis/Dissertation BibTeX citation key: Tsai2007 View all bibliographic details  |
Categories: General Keywords: Cuora, Cuora flavomarginata, Geoemydidae, Habitat = habitat, Ostasien = East Asia, Schildkröten = turtles + tortoises Creators: Tsai Publisher: National Cheng Kung University (Tainan City) |
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| URLs http://etdncku.lib ... etd-1218107-154100 |
| Abstract |
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The yellow-margined box turtles (Cuora flavomarginata: Geoemydidae), distributed widely in lowland area of Taiwan in the past, are now threatened by human exploitation and are rare. However, its distribution, population size, habitats, and activity pattern in southern Taiwan are only anecdotes. In this study, movement patterns, home range, habitat utilization, and daily activity patterns of C. flavomarginata were studied by trailing the turtles with thread cocoons in Nanjenshan Reserve in southern Taiwan. The population size was estimated by mark-recapture method with the Jolly-Seber model. Daily movement rates exhibited tremendous variations within and among individual C. flavomarginata and directions of the movements were non-random. Mean distance traveled during the day time was significantly greater than those during the night time. Distance traveled per day by the male turtles peaked in October (84.7 ± 17.8 m) and dropped to the lowest level in December. Male home range size ranged from 0.31 to 1.89 ha by 95% minimum convex polygon analysis, and was 0.52 to 2.36 ha by 95% fixed kernel estimation. The home ranges distributed around a temporary pond in the study area. In addition, C. flavomarginata stayed in the primary forest in bushes or litter layers and avoided the exposed area, such as forest gaps and areca plantations during March-October. The turtles overwintered in the creek areas and were relative inactive after November. C. flavomarginata was active in early morning and late afternoon and more activities were observed under sunny conditions. The estimated population size and density were 2.7-8.0 and 1.1-3.2 individuals.ha-1 from June to September. Illegal hunting in the area was often seen. The low capture rate and estimated density suggested that population of C. flavomarginata is under severe threat in Nanjenshan Reserve.
Added by: Admin |