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首页> 外文期刊>Conservation Biology >A concentric analysis of the impact of urbanization on the threatened European tree frog in an agricultural landscape
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A concentric analysis of the impact of urbanization on the threatened European tree frog in an agricultural landscape

机译：对农业景观中城市化对受威胁的欧洲树蛙的影响的同心分析

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Pond-breeding amphibians are affected by site-specific factors and regional and landscape-scale patterns of land use. Recent anthropogenic landscape modifications (drainage, agriculture intensification, larger road networks, and increased traffic) affect species by reducing the suitable habitat area and fragmenting remaining populations. Using a robust concentric approach based on permutation tests, we evaluated the impact of recent landscape changes on the presence of the endangered European tree frog (Hyla arborea.) in wetlands. We analyzed the frequency of 1 traffic and 14 land-use indices at 20 circular ranges (from 100-m up to 2-km radii) around 76 ponds identified in western Switzerland. Urban areas and road surfaces had a strong adverse effect on tree frog presence even at relatively great distances (from 100 m up to 1 km). When traffic measurements were considered instead of road surfaces, the effect increased, suggesting a negative impact due to a vehicle-induced effect. Altogether, our results indicate that urbanization and traffic must be taken into account when pond creation is an option in conservation management plans, as is the case for the European tree frog in western Switzerland. We conclude that our easy-to-use and robust concentric method of analysis can successfully assist managers in identifying potential sites for pond creation, where probability of the presence of tree frogs is maximized.
机译：池塘繁殖的两栖动物受到特定地点的因素以及土地利用的区域和景观尺度格局的影响。最近的人为景观改造（排水，农业集约化，道路网络扩大和交通增加）通过减少合适的栖息地面积和分散剩余种群而影响物种。使用基于置换测试的鲁棒同心方法，我们评估了最近景观变化对湿地中濒临灭绝的欧洲树蛙（Hyla arborea。）的影响。我们在瑞士西部发现的76个池塘周围的20个圆形范围（半径从100米到2公里）内分析了1种交通和14种土地利用指数的频率。即使在相对较远的距离（从100 m到1 km）内，市区和道路表面也对树蛙的存在产生强烈的不利影响。当考虑交通量而不是路面时，影响增加，表明由于车辆引起的影响而产生负面影响。总而言之，我们的结果表明，在保护管理计划中将池塘创建作为一种选择时，必须考虑到城市化和交通，就像瑞士西部的欧洲树蛙一样。我们得出的结论是，我们易于使用且功能强大的同心分析方法可以成功地帮助管理人员确定潜在的池塘创建地点，其中最大可能出现树蛙。

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