Recovery of tree-related microhabitats in a tropical rainforest after agricultural abandonment

Research output: Contribution to journal › Research article › Contributed › peer-review

Contributors

  • Ronja Hausmann - , University of Würzburg (Author)
  • Sebastián Escobar - , Universidad de las Américas - Ecuador (Author)
  • Nico Blüthgen - , Technische Universität Darmstadt (Author)
  • H. Martin Schaefer - , Jocotoco Conservation Foundation (Author)
  • Felicity L. Newell - , Texas A&M University, University of Bern (Author)
  • Maria José Endara - , Universidad de las Américas - Ecuador (Author)
  • Juan Ernesto Guevara-Andino - , Universidad de las Américas - Ecuador (Author)
  • Heike Feldhaar - , University of Bayreuth (Author)
  • Daniel Kraus - , University of Würzburg (Author)
  • Dominik Thom - , Chair of Silviculture (Author)
  • Jörg Müller - , University of Würzburg, Bavarian Forest National Park (Author)

Abstract

The restoration of degraded tropical forests is a global priority to halt terrestrial biodiversity loss. However, the complexity and hyper diversity of tropical forests challenge the quantification of their recovery status. Unlike temperate forests, where tree-related microhabitats (TreMs) have been established as a surrogate for habitat diversity, TreMs have received little attention in the tropics. Here, we investigated the recovery of TreM profiles along a chronosequence of forest recovery ranging from cacao plantations and pastures to abandoned agricultural land (2 to 38 years), and old-growth forests in the Ecuadorian lowland Chocó forest. Our analysis accounted for sample incompleteness and different abundance weightings using Hill numbers. Based on 57 TreM types, we identified an overall increase in diversity over time. Pasture regenerations exhibited a steeper and more continuous shift of TreM diversity and composition along the recovery gradient, likely due to more remnant trees that retained TreMs, in contrast to cacao regenerations. Diversity, community composition and numerous typical TreM types show that old-growth forests maintain distinct TreM profiles. In addition, Ferns and hemiepiphytes had the highest number of positive co-occurrences with other TreMs, while stiltroots excluded both buttress roots and trunk base rot holes. Using multiple regression in distance matrices we identified tree species richness and light availability as the main drivers of TreM composition. Our TreM results call for a strategy of protecting old-growth forests with their unique and diverse TreM profiles and of favouring agricultural sites with remnant trees for restoration due to faster achievements in habitat diversity.

Details

Original languageEnglish
Article number111739
JournalBiological conservation
Volume316
Publication statusPublished - Apr 2026
Peer-reviewedYes

External IDs

ORCID /0000-0001-8091-6075/work/225495778

Keywords

Sustainable Development Goals

Keywords

  • Cacao plantation, Lowland tropical forest, Old-growth forest, Pasture, Recovery gradient, Tree-related microhabitats