Pacific chorus frog (Pseudacris regilla) populations have persisted despite urban and rural development throughout the species’ range; yet it is possible that P. regilla, like other anurans with which it historically co-occurred, will become extirpated from cities and suburbs if urbanization intensifies as predicted. An improved understanding of the conditions that enable this species to persist in developed landscapes is needed to identify and conserve suitable habitats. We investigated species-habitat relationships for P. regilla in a mixed urban-rural landscape in southwestern British Columbia, Canada, to identify potential criteria for habitat suitability. We conducted repeat auditory surveys of chorusing males at 52 potential breeding wetlands and modeled occupancy at 26 of these sites using local and landscape variables representing competing hypotheses and spatial scales of influence. The models that best explained P. regilla occupancy included a combination of terrestrial habitat and connectivity factors and the presence of non-native predators. We found that the proportion of impervious cover within 250 m of a wetland had the strongest negative impact on occupancy. Our findings suggest that availability of terrestrial habitat adjacent to breeding sites is the primary driver of species presence in the developed landscape. Conservation efforts should seek to limit impervious cover to less than 20% within a 250-m buffer around breeding wetlands. Further, restored and created wetlands in urban and rural areas may be more likely to support P. regilla if they are designed with a seasonal hydroperiod that excludes non-native aquatic predators and are placed in an area of high pond density.

尽管在整个物种范围内进行了城市和农村发展，但太平洋合唱蛙（Pseudacris regilla）种群仍然存在；然而，如果城市化如预测的那样加剧，P. regilla可能会像历史上与之共生的其他无尾目动物一样从城市和郊区消失。需要更好地了解使该物种能够在发达景观中生存的条件，以确定和保护合适的栖息地。我们调查了P. regilla 的物种栖息地关系在加拿大不列颠哥伦比亚省西南部的城乡混合景观中，以确定栖息地适宜性的潜在标准。我们对 52 个潜在繁殖湿地的合唱雄性进行了重复的听觉调查，并使用代表竞争假设和影响空间尺度的当地和景观变量模拟了其中 26 个地点的占用率。最能解释P. regilla的模型入住率包括陆地栖息地和连通性因素以及非本地捕食者的存在。我们发现湿地 250 m 内不透水覆盖的比例对入住率的负面影响最大。我们的研究结果表明，靠近繁殖地的陆地栖息地的可用性是已开发景观中物种存在的主要驱动力。保护工作应设法将繁殖湿地周围 250 米缓冲区内的不透水覆盖率限制在 20% 以下。此外，如果城市和农村地区恢复和创造的湿地设计有季节性水期，排除非本地水生食肉动物并放置在池塘密度高的区域，则它们可能更有可能支持P. regilla。