Climate refugia management is an emerging natural resource sub-discipline but identifying which species would benefit, their climatic requirements, and where both species and suitable conditions are located remains problematic. Land snails have species specific temperature needs and are one of the most imperiled groups of animals. The goal of our study was to 1) determine the distribution of land snails across a large 22,975 km² study area in North America’s Pacific Northwest, 2) determine if microclimate, macroclimate, or non-microclimate variables influence species occurrence, and 3) identify microrefugia and clusters of microrefugia most suitable for land snail climate refugia management. From 2010 to 14, we stratified our study area into 5×5 km sampling cells and co-located land snail surveys with air temperature data loggers at 1–2 sites per cell for a total of 830 survey sites. We used our air temperature data to calculate standard microclimate variables and generated Random Forest models which evaluated 8 microclimate, 2 macroclimate, and 4 non-microclimate variables for 27 land snail species. Climate variables outperformed non-climate variables and we identified land snail species which occupy ‘cool’ (n = 12), ‘warm’ (n = 7), or ‘generalist’ (n = 8) microclimate niches. We developed a microclimate scoring system which we used to map cool microsites and identify the largest cluster in each of the five mountain ranges spanning our study area. We recommend these areas be prioritized for land snail climate refugia management.

气候避难所管理是一个新兴的自然资源子学科，但确定哪些物种会受益、它们的气候要求以及物种和合适条件所在的位置仍然存在问题。陆生蜗牛具有物种特定的温度需求，是最危险的动物群体之一。我们研究的目标是 1) 确定陆地蜗牛在 22,975 平方公里的大范围内的分布²北美洲太平洋西北部的研究区，2) 确定微气候、大气候或非微气候变量是否影响物种发生，以及 3) 确定最适合陆地蜗牛气候避难所管理的微型避难所和微型避难所群。从 2010 年到 14 年，我们将我们的研究区域分层为 5×5 公里的采样单元，并在每个单元的 1-2 个站点使用气温数据记录器进行共址陆地蜗牛调查，总共 830 个调查站点。我们使用我们的气温数据来计算标准的小气候变量并生成随机森林模型，该模型评估了 27 种陆地蜗牛物种的 8 个小气候、2 个大气候和 4 个非小气候变量。气候变量优于非气候变量，我们确定了占据“凉爽”（n  = 12）、“温暖”（n  = 7) 或“通才” ( n  = 8) 小气候生态位。我们开发了一个微气候评分系统，用于绘制凉爽的微型站点并确定跨越我们研究区域的五个山脉中每个山脉中最大的集群。我们建议将这些地区优先用于陆地蜗牛气候避难所管理。