Forest plantations may have detrimental effects on biodiversity. However, these plantations are widely used to restore degraded habitats, yet their contribution to restoring functional diversity remains largely unknown. We assessed vegetation structure, resource availability, and bird abundance, as well as bird morphological, behavioral, life history, and functional diversity in ~35‐year‐old monospecific protected Andean alder (Alnus acuminata) forest plantations in the Central Andes range at elevations between 2,400 and 2,800 m, to determine if plantation structure and resource availability favor bird functional diversity. We compared our findings to a 35‐ to 45‐year‐old secondary forest that had naturally regenerated. We found similarities in bird functional diversity but different functional composition between the Andean alder plantation and secondary forest. The bird life history, behavioral, and morphological traits from the secondary forest were more heterogeneous than those from the plantation. In addition, standing dead trees in the Andean alder plantation promoted bird functional diversity and the presence of birds in the plantation interior. Overall, vegetation structure and understory resource availability of Andean alder plantations appear sufficient to enable bird functional diversity partially resembling that of secondary forests in the region.

中文翻译：

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哥伦比亚安第斯山脉恢复森林和次生森林的鸟类功能多样性

人工林可能对生物多样性有不利影响。但是，这些人工林被广泛用于恢复退化的栖息地，但是它们在恢复功能多样性方面的作用仍然未知。我们评估了约35岁单保护的安第斯al木（Alnus acuminata）的植被结构，资源可用性和鸟类丰度，以及鸟类形态，行为，生活史和功能多样性）安第斯中部的人工林海拔在2,400至2,800 m之间，以确定人工林结构和资源可用性是否有利于鸟类的功能多样性。我们将研究结果与自然再生的35至45岁的次生林进行了比较。我们发现安第斯al木人工林和次生林之间鸟类功能多样性相似，但功能组成不同。次生林中鸟类的生活史，行为和形态特征比人工林中的更为异质。此外，安第斯ean木人工林中死木的生长促进了鸟类功能的多样性，并促进了人工林内部鸟类的出现。全面的，