Commercial harvests can threaten tree species harvested for their bark. Amphipterygium adstringens is a dioecious tree, endemic to the tropical dry forests of Mexico, where it is intensively harvested for its medicinal bark. Limited information hinders developing sustainable management strategies for A. adstringens. We assessed bark regeneration for male and female trees, and evaluated the effect of tree sex and diameter, debarking treatments and cutting seasons on bark regeneration and tree survival rates. Bark regeneration was higher for wet season harvested trees (vs. dry), regardless of their sex. Bark regeneration was higher on female than on male trees. There were significant interactions of harvest season, harvest treatment and tree sex diameter on bark regeneration and survival. Overall, the highest bark regeneration rates occurred in female trees with ≥20.1 cm diameter that were wet season harvested with a 50% debarking intensity. Consequently, wet season and intermediate intensity harvests appear to foster sound management, but we recommend against targeting exclusively a single demographic group (i.e., large female trees) due to potential negative impacts on species demography and bark supply. A grounded strategy for sustaining bark harvest would also need to take into account relevant aspects of local socio-ecological context, including harvest interactions with other land uses.

中文翻译：

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维持药用树皮：实验性剥皮下的热带树木两栖双足类（Anacardiaceae）的存活和树皮再生

商业采伐会威胁到为树皮采伐的树种。两栖两栖类是雌雄异株的树，是墨西哥热带干燥森林的特有种，在那里大量采摘其药用树皮。有限的信息阻碍了对链球菌的可持续管理策略的制定。我们评估了雄性和雌性树的树皮再生，并评估了树的性别和直径，剥皮处理和采伐季节对树皮再生和树成活率的影响。雨季收获的树木（相对于干燥的树木）的树皮再生率更高，无论其性别如何。女性的树皮再生高于男性的树皮。采伐季节，采伐处理方式和树木性别直径对树皮再生和存活有显着的相互作用。总体而言，树皮再生率最高的是直径≥20.1cm的雌树，这些树是在雨季收获的，树皮剥皮强度为50％。因此，雨季和中等强度的收成似乎有助于加强声音管理，但我们建议您不要只针对单个人口群体（例如，由于对物种人口统计和树皮供应有潜在的负面影响，所以雌树大）。维持树皮收成的扎根战略还需要考虑到当地社会生态环境的相关方面，包括收成与其他土地用途的相互作用。