ThéMA, CNRS - University of Franche-Comté, 32 Rue Mégevand, F-25 030 Besançon cedex, France.
J Environ Manage. 2013 Sep 30;127:125-34. doi: 10.1016/j.jenvman.2013.04.018. Epub 2013 May 17.
The aim of the present work is to assess the potential long-distance effect of a high-speed railway line on the distribution of the European tree frog (Hyla arborea) in eastern France by combining graph-based analysis and species distribution models. This combination is a way to integrate patch-level connectivity metrics on different scales into a predictive model. The approach used is put in place before the construction of the infrastructure and allows areas potentially affected by isolation to be mapped. Through a diachronic analysis, comparing species distribution before and after the construction of the infrastructure, we identify changes in the probability of species presence and we determine the maximum distance of impact. The results show that the potential impact decreases with distance from the high-speed railway line and the largest disturbances occur within the first 500 m. Between 500 m and 3500 m, the infrastructure generates a moderate decrease in the probability of presence with maximum values close to -40%. Beyond 3500 m the average disturbance is less than -10%. The spatial extent of the impact is greater than the dispersal distance of the tree frog, confirming the assumption of the long-distance effect of the infrastructure. This predictive modelling approach appears to be a useful tool for environmental impact assessment and strategic environmental assessment. The results of the species distribution assessment may provide guidance for field surveys and support for conservation decisions by identifying the areas most affected.
本研究旨在通过结合基于图论的分析和物种分布模型，评估高速铁路线对法国东部欧洲树蛙（Hyla arborea）分布的潜在远距离影响。这种组合是将不同尺度的斑块连通性度量指标整合到预测模型中的一种方法。该方法在基础设施建设之前实施，可用于绘制可能受到隔离影响的区域。通过历时分析，比较基础设施建设前后物种的分布情况，我们确定了物种存在概率的变化，并确定了最大影响距离。结果表明，潜在影响随距高速铁路线距离的增加而减小，最大干扰发生在距高速铁路线 500m 范围内。在 500m 至 3500m 范围内，基础设施会导致物种存在概率适度降低，最大值接近-40%。在 3500m 以外，平均干扰小于-10%。影响的空间范围大于树蛙的扩散距离，证实了基础设施远距离影响的假设。这种预测建模方法似乎是环境影响评估和战略环境评估的有用工具。物种分布评估的结果可以通过确定受影响最严重的区域，为现场调查提供指导，并为保护决策提供支持。
