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Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Incomplete recovery of tree community composition and rare species after 120 years of tropical forest succession in Panama
Author(s): Elsy, Alexander D
Pfeifer, Marion
Jones, Isabel L
DeWalt, Saara J
Lopez, Omar R
Dent, Daisy H
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Keywords: alternate successional pathways
forest structure
Gustavia superba
species diversity
Issue Date: 30-Oct-2023
Date Deposited: 15-Nov-2023
Citation: Elsy AD, Pfeifer M, Jones IL, DeWalt SJ, Lopez OR & Dent DH (2023) Incomplete recovery of tree community composition and rare species after 120 years of tropical forest succession in Panama. <i>Biotropica</i>.
Abstract: Determining how fully tropical forests regenerating on abandoned land recover characteristics of old-growth forests is increasingly important for understanding their role in conserving rare species and maintaining ecosystem services. Despite this, our understanding of forest structure and community composition recovery throughout succession is incomplete, as many tropical chronosequences do not extend beyond the first 50 years of succession. Here, we examined trajectories of forest recovery across eight 1-hectare plots in middle and later stages of forest succession (40–120 years) and five 1-hectare old-growth plots, in the Barro Colorado Nature Monument (BCNM), Panama. We first verified that forest age had a greater effect than edaphic or topographic variation on forest structure, diversity and composition and then corroborated results from smaller plots censused 20 years previously. Tree species diversity (but not species richness) and forest structure had fully recovered to old-growth levels by 40 and 90 years, respectively. However, rare species were missing, and old-growth specialists were in low abundance, in the mid- and late secondary forest plots, leading to incomplete recovery of species composition even by 120 years into succession. We also found evidence that dominance early in succession by a long-lived pioneer led to altered forest structure and delayed recovery of species diversity and composition well past a century after land abandonment. Our results illustrate the critical importance of old-growth and old secondary forests for biodiversity conservation, given that recovery of community composition may take several centuries, particularly when a long-lived pioneer dominates in early succession.
DOI Link: 10.1111/btp.13275
Rights: © 2023 The Authors. Biotropica published by Wiley Periodicals LLC on behalf of Association for Tropical Biology and Conservation. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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