Extinction risks and cofactors of amphibia
两栖动物的灭绝风险和辅助因素
基本信息
- 批准号:15510194
- 负责人:
- 金额:$ 1.34万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2003
- 资助国家:日本
- 起止时间:2003 至 2005
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Conservation of biodiversity is the scale dependent in the planning process. At first, priority areas are screened extensively on the national or regional scale by using a simple habitat model. The second step is to design a conservation area in the landscape scale. We developed habitat models for amphibias in this two scales and discussed usefulness of the models in conservation1.Risk assessment in national scale and phylogeographic studyPresence and absence data were available for the clouded salamander and in Shiga and Osaka Prefecture. Logistic models were used to estimate the potential habitat for these two species. Habitat suitability was estimated using Ecological-Niche Factor Analysis for species in which only presence data are available. Future risks were evaluated for these animals by overlaying land use planning maps with the potential habitat maps. To identify regional population units of H.nebulosus, 420 base pairs were sequenced within the mitochondrial DNA control region … More . Results indicate substantial phylogeographic structuring and strong population-level separations. Four groups were detected among this species.2.Risk assessment in landscape scaleA habitat model in landscape scale (1 km x 2 km range) was built for the clouded salamander by using a result of ecological survey and a 1/2,500 vegetation map and 10 m DEM. This model was used to estimate extinction risk of the salamander in several scenarios of land change. The risk assessment of metapopulation allows a sophisticate evaluation of environmental impacts in complex landscapes such as Satoyama in Japan.3.Influence of small dams on the movements of Japanese giant salamander.A.japonicus move to up stream before their breeding season. But it is predictable that the movement is prevented by small dams. We surveyed. a seasonal movement of A.japonicus and examined the effect of small dams on the movement in Hatuka river of Muko river system in western Japan. We surveyed in 1523 m section of the river that include six dams, and marked 104 individuals. More than 10 individuals moved up stream over each of the dams. But the fact that many individuals were observed just under dams that are taller than 30 cm and 30° in the inclination suggests that A.japonicus cannot pass over those dams without a bypass or a foothold4.Avoidance responses of (Hynobius nebulosus mediated by predator chemical cue.We studied antipredator behavior of the clouded salamander (H.nebulosus)larvae. In our experiment, we tested the effects of predatory newt and crayfish, non-lethal effects of tadpole and effects of inexperience fish We found that H.nebulosus can recognize predators not based on visual cue but kairomones emitted by the predator. larvae did not respond to kairomones of predatory fish Carassius auratus which did not inhabit in temporary pool, therefore it suggested that H.nebulosus do not have avoidance response to predator not inhabit the same habitat. Less
生物多样性的保护在规划过程中取决于规模。首先,通过使用简单的栖息地模型,在国家或区域范围内广泛筛选优先区域。第二步是在景观尺度上设计保护区。我们在这两个尺度上建立了两栖动物的栖息地模型,并讨论了这些模型在保护中的应用。1.在国家尺度和系统地理研究中的风险评估有云蜥蜴以及滋贺县和大阪府的有无数据。用Logistic模型估算了这两个物种的潜在栖息地。对于只有存在数据的物种,使用生态位因子分析来评估生境适宜性。通过将土地利用规划地图与潜在的栖息地地图重叠,对这些动物的未来风险进行了评估。为了确定星云嗜血杆菌的区域种群单位,在线粒体…控制区内测定了420bp的序列更多。结果表明,大量的系统地理结构和强烈的种群水平分离。2.利用1/2,500植被图和10m高程高程数字高程模型,在景观尺度(1 km×2 km范围内)建立了云螈景观尺度的风险度评价模型。该模型被用来估计在几种土地变化情景下火蜥蜴的灭绝风险。集合种群的风险评估可以对复杂景观中的环境影响进行复杂的评估,如日本的佐山。3.小水坝对日本大蜥蜴活动的影响。日本大蜥蜴在繁殖季节之前向上游移动。但可以预见的是,小水坝阻止了这一运动。我们进行了调查。日本对虾的季节性运动,并研究了小水坝对日本西部Muko河水系Hatuka河运动的影响。我们测量了这条河1523米长的河段,其中包括6座大坝,并标记了104个个体。每座大坝上都有10多个个体逆流而上。但是,在高度大于30 cm和倾角30°的堤坝下观察到许多个体的事实表明,日本沼虾不可能在没有旁路或立足点的情况下越过这些堤坝。4.星云小天牛对捕食者化学线索的逃避反应。在我们的实验中,我们测试了捕食性Newt和小龙虾的效果,蝌蚪的非致命性效果和缺乏经验的鱼的效果。我们发现星云杆菌可以识别捕食者,而不是基于捕食者发出的凯洛酮,而不是视觉线索。幼体对不栖息在临时池塘中的捕食性鱼类鲫鱼的凯洛酮类无反应,说明星云罗非鱼对不在同一栖息地的捕食者不具有回避反应。较少
项目成果
期刊论文数量(31)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Effects of landscape pattern of grassland and woodland on animal communities
草地和林地景观格局对动物群落的影响
- DOI:
- 发表时间:2003
- 期刊:
- 影响因子:0
- 作者:Miyoshi F;Natuhara Y;Natuhara Y.
- 通讯作者:Natuhara Y.
Landscapd evaluation for ecosystem planning
生态系统规划的景观评价
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Natuhara Y
- 通讯作者:Natuhara Y
Genetic differentiation among endangered populations of the Japanese clouded salamander, Hynobius nebulosus(Caudata : Hynobiidae).
日本云蝾、Hynobius nebulosus(有尾目:Hynobiidae)濒危种群的遗传分化。
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Hirota;T.;Natuhara;Y.
- 通讯作者:Y.
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NATUHARA Yosihiro其他文献
NATUHARA Yosihiro的其他文献
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{{ truncateString('NATUHARA Yosihiro', 18)}}的其他基金
Multidisciplinary research on wise use of ecosystem services in rice-field ecosystems
稻田生态系统生态系统服务合理利用的多学科研究
- 批准号:
24241011 - 财政年份:2012
- 资助金额:
$ 1.34万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Evaluation of Satoyama landscape based on landscape ecological mothods
基于景观生态学方法的里山景观评价
- 批准号:
20241009 - 财政年份:2008
- 资助金额:
$ 1.34万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
相似国自然基金
长江中下游鱼类栖息地模型研究
- 批准号:50909006
- 批准年份:2009
- 资助金额:21.0 万元
- 项目类别:青年科学基金项目
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Species diversity of Japanese snow crane flies under global warming: DNA taxonomy and habitat model
全球变暖下日本雪鹤的物种多样性:DNA分类学和栖息地模型
- 批准号:
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Nearshore Habitat Model for Sustainable Fisheries
可持续渔业近岸栖息地模型
- 批准号:
395400-2009 - 财政年份:2009
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$ 1.34万 - 项目类别:
Engage Grants Program