Every year, Danaus plexippus (Linnaeus, 1758) travels to hibernate in oyamel fir forests located between the limits of the states of Michoacán and Mexico in Mexico. Climate change and anthropogenic actions are diminishing oyamel fir forests in Mexico, putting pressure on the habitats of monarch butterflies. In the last decade, new colonies outside their usual range have been predicted through modeling and reported by the National Commission on Protected Areas of Mexico. The objectives of the study were to recover information on the historical and new hibernation sites, reported or modeled, from different literature sources. We also aimed to perform a bioclimatic and forest biometric characterization of new monarch butterfly colonies located in Sierra Nevada in Mexico to provide information to aid in conservation strategies for the monarch butterfly population. We conducted field trips to georeference the colonies at sites located in the Atlautla municipality in Mexico State. Climatic, topographic, and forest biometric variables were used to characterize the sites physically. It was found that the butterfly’s roosts occurred at a higher elevation than those recorded by other sources. The locations where the monarch’s colonies were established, in the east of Mexico State, provide information relevant to defining and developing policies for their conservation.

中文翻译：

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表征墨西哥内华达山脉帝王蝶殖民地的新越冬地点。

每年，Danaus plexippus（Linnaeus，1758年）前往位于墨西哥米却肯州和墨西哥州之间的牡蛎杉林冬眠。气候变化和人类活动正在减少墨西哥的oyamel冷杉林，给帝王蝶的栖息地带来压力。在过去的十年中，通过建模预测了超出正常范围的新殖民地，并由墨西哥国家保护区委员会报告。这项研究的目的是从不同的文献来源中获得有关报告或建模的历史和新冬眠地点的信息。我们还旨在对位于墨西哥内华达山脉的新帝王蝶殖民地进行生物气候和森林生物特征分析，以提供信息以帮助帝王蝶种群的保护策略。我们进行了实地考察，以对位于墨西哥州Atlautla市政当局所在地的殖民地进行地理定位。气候，地形和森林生物特征变量被用来对站点进行物理表征。发现蝴蝶的栖息地比其他来源记录的栖息地高。在墨西哥州东部，君主殖民地的建立地点提供了有关制定和制定保护其政策的信息。