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Habitat suitability and protection status of four species of amphibians in the Dominican Republic

机译:多米尼加共和国四种两栖动物的生境适宜性和保护状况

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Hispaniola Island has both a high level of amphibian endemism, and a high level of habitat degradation due to agriculture, infrastructure development, and extractive industries. The objective of this work was to evaluate the capacity of Dominican Republic's current network of protection to maintain the habitat of four species of amphibians endemic to Hispaniola (Osteopilus pulchrilineatus, Osteopilus vastus, Hypsiboas heilprini, and Eleutherodactylus flavescens). Spatial analysis was performed to relate observations of the target species to environmental factors using a maximum entropy algorithm (Maxent). Results of this analysis produced maps of probability of occurrence for each species. Analysis of habitat degradation was based on a change analysis of vegetation, by evaluating trends in the normalized difference vegetation index (NDVI) between 2000 and 2011. Results show that forest loss and species habitat loss within protected areas are smaller but similar to those extracted for the country as a whole, suggesting that the current protected area network is not effective for the maintenance of the habitat of the amphibians analyzed. Enforcement of established protection and restoration within current protected areas could facilitate the protection of up to 25.7% of target amphibian habitat. The methodologies presented here can be applied to measure biodiversity offset effectiveness. (C) 2015 Elsevier Ltd. All rights reserved.
机译:伊斯帕尼奥拉岛既有两栖动物的高度流行,又有由于农业,基础设施发展和采掘业造成的高水平的栖息地退化。这项工作的目的是评估多米尼加共和国目前的保护网络在维持四种特有的西班牙两栖动物(Osteopilus pulchrilineatus,Osteopilus hugeus,Hypsiboas heilprini和Eleutherodactylus flavescens)栖息地的能力。使用最大熵算法(Maxent)进行了空间分析,以将目标物种的观察结果与环境因素相关联。分析结果产生了每种物种发生概率的图。对生境退化的分析基于植被变化分析,通过评估2000年至2011年之间的归一化差异植被指数(NDVI)趋势来进行。结果表明,保护区内的森林流失和物种生境流失较小,但与提取的相似。整个国家,这表明当前的保护区网络对于维持所分析的两栖动物的栖息地无效。在目前的保护区内加强既定的保护和恢复工作,可以促进对多达25.7%的目标两栖动物栖息地的保护。此处介绍的方法可用于衡量生物多样性补偿的有效性。 (C)2015 Elsevier Ltd.保留所有权利。

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