Landscape heterogeneity and soil biota are central to multi-taxa diversity for oil palm landscape restoration
Vannesa Montoya‐Sánchez, Holger Kreft, Isabelle Arimond, Johannes Ballauff, Dirk Berkelmann, Fabian Brambach, Rolf Daniel, Ingo Graß, Jes Hines, Dirk Hölscher, Bambang Irawan, Alena Krause, Andrea Polle, Anton Potapov, Lena Sachsenmaier, Stefan Scheu, Leti Sundawati, Teja Tscharntke, Delphine Clara Zemp, Nathaly R. Guerrero‐Ramírez
Abstract
Abstract Enhancing biodiversity in monoculture-dominated landscapes is a key sustainability challenge that requires considering the spatial organization of ecological communities (beta diversity). Here, we tested whether increasing landscape heterogeneity, through establishing 52 tree islands in an oil-palm landscape, is a suitable restoration strategy to enhance the diversity of six taxa (multi-taxa diversity). Further, we elucidated whether patterns in the spatial distribution of above- and below-ground taxa are related, and their role in shaping multi-taxa beta diversity. After five years, islands enhanced diversity at the landscape scale by fostering unique species (turnover). Partial correlation networks revealed that dissimilarity, in vegetation structural complexity and soil conditions, impacts multi-taxa beta diversity and turnover. In addition, soil fauna, bacteria, and fungi were more strongly associated with the overall community than aboveground taxa. Thus, strategies aiming to enhance multi-taxa diversity should consider the central role of landscape heterogeneity and soil biota.