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Many traditional societies forecast weather using observations of phenological changes. In Lacanja Chansayab, Chiapas, Mexico, Indigenous farmers use animal behavior, plant flowering, and solar and lunar halos, to predict rainfall. These indicators were observed and weather patterns were measured in Lacanja Chansayab. Interviews with Lacandon Maya revealed a diverse system of indicators that overlapped with systems used by other cultures. Due to indicator diversity, it is possible that this traditional system will remain useful as climate change alters local weather; cultural knowledge is nonetheless threatened by societal and economic changes. [ABSTRACT FROM AUTHOR]

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The Lacandon Maya is an indigenous group who live in Chiapas, Mexico. Their traditional lifeways involve swidden, sequential agroforestry management that mimics ecological disturbance and modifies succession. Lacandon farmers use fire to clear small plots for polyculture milpa agroforests, which they subsequently fallow. They actively manage all stages of their agroforests to provide ecosystem services and facilitate site recovery. However, it is unclear whether or how quickly the ecosystem structure of Lacandon agroforests matches that of a mature forest. Therefore, this study quantified canopy cover, basal area, ground cover, and litter layers and depth to empirically evaluate successional trends in vegetation and litter structure. Our results show that the Lacandon agroforest structure typically recovers to mature forest levels, but the speed and nature of this recovery vary by metric. They also indicate Lacandon traditional agroforestry is predicated on nuanced understanding of tropical forest successional dynamics, as illustrated by Lacandon farmers' recognition of successional stages that correspond to patterns in vegetation and leaf litter structure. As such, Lacandon ecological knowledge has the potential to facilitate the restoration of degraded tropical forests in Chiapas, Mexico. However, our findings also demonstrate that shortening fallow periods will undermine the ecological integrity of this traditional agricultural system. [ABSTRACT FROM AUTHOR]