Altered structure of bat–prey interaction networks in logged tropical forests revealed by metabarcoding. Issue 22 (8th September 2021)

• Record Type: Journal Article
• Authors: Hemprich‐Bennett, David R.; Kemp, Victoria A.; Blackman, Joshua; Struebig, Matthew J.; Lewis, Owen T.; Rossiter, Stephen J.; Clare, Elizabeth L.
• Is Part Of: Molecular ecology. Volume 30:Issue 22(2021)
• Page Start: 5844
• Page End: 5857
• Publication Date: 2021-09-08
• Subjects: Borneo -- conservation -- ecological interactions -- network ecology -- rainforest degradation -- tropical ecology; Molecular ecology -- Periodicals; Molecular population biology -- Periodicals; 576
• DOI: 10.1111/mec.16153
• Languages: English
• ISSNs: 0962-1083

Abstract

Abstract: Habitat degradation is pervasive across the tropics and is particularly acute in Southeast Asia, with major implications for biodiversity. Much research has addressed the impact of degradation on species diversity; however, little is known about how ecological interactions are altered, including those that constitute important ecosystem functions such as consumption of herbivores. To examine how rainforest degradation alters trophic interaction networks, we applied DNA metabarcoding to construct interaction networks linking forest‐dwelling insectivorous bat species and their prey, comparing old‐growth forest and forest degraded by logging in Sabah, Borneo. Individual bats in logged rainforest consumed a lower richness of prey than those in old‐growth forest. As a result, interaction networks in logged forests had a less nested structure. These network structures were associated with reduced network redundancy and thus increased vulnerability to perturbations in logged forests. Our results show how ecological interactions change between old‐growth and logged forests, with potentially negative implications for ecosystem function and network stability.