REASSEMBLY

Resistance, resilience and functional recovery of a rainforest ecosystem

​DFG-funded Research Unit REASSEMBLY (FOR 5207)

REASSEMBLY aims at understanding network dynamics to uncover rules of network dis- and reassembly in a highly diverse tropical lowland rainforest ecosystem. We study the dynamics of natural forest recovery from agriculture along a chronosequence and the contribution of re-assembled networks to the resilience of ecosystem processes against perturbation. We compare the trajectories of predator–prey, plant–pollinator, and plant–seed disperser networks, as well as decomposition networks between mammals, dung beetles and seeds, and between dead wood, ants, termites, and beetles. Subprojects thus examine networks of all major ecosystem processes mediated by interspecific interactions: predation, pollination, primary and secondary seed dispersal, herbivory, decomposition, and tree seedling recruitment. Networks and ecosystem processes are studied along a large-scale chronosequence of forest recovery (62 plots representing different stages of succession) and in a small-scale perturbation–recruitment experiment. Our Research Unit is funded by the Deutsche Forschungsgemeinschaft (DFG).

Our MISSION: Although REASSEMBLY is a basic scientific research unit, our aim is to ensure that the knowledge gained can be applied and contribute to optimizing the restoration of tropical forests. This research project, funded by the Deutsche Forschungsgemeinschaft (DFG), will not only be conducted within a forest in Ecuador, but on an equal footing with the Ecuadorian scientific community in different institutions and with an Ecuadorian conservation organization (Fundación Jocotoco). Our goal is to strengthen ecological science and the next generation of scientists in both countries, as well as nature conservation efforts that meet the interests of local communities. To achieve these goals, transparent and accessible data and results are essential.

Latest Posts:

• The recovery of mutualistic interaction: opportunistic species as pioneers
  by Nico
  March 31, 2023
  The recovery of forest ecosystems relies on mutualistic interactions, particularly pollinators and seed-dispersers, or plant defenses by ants. A new modelling study on the succession and assembly of these interactions revealed an important role of non-obligate animal mutualists. Timo Metz performed computer simulations based on trait matching between mutualists, now published in Oikos. His work …
• Functional trait dynamics of ant communities
  by Nico
  February 21, 2023
  Theory predicts that environmental filtering determines species assemblages – and their reassembly dynamics in a changing habitat such as a recovering rainforest. This prediction can be tested by studying trajectories of functional trait and phylogenetic composition. Phil Hoenle and coauthors examined 13 morphological traits from a total of 284 ant species from 58 genera, and …
• Variation in a dung beetle: from forest to grassland
  by Nico
  February 19, 2023
  Species differ in their shape, morphology and function. But individuals within a species can be highly variable, too. Such variation likely results from responses to different environmetal conditions. Diego Marín-Armijos, Adolfo Chamba-Carrillo and Karen Pedersen (SP6) studied variation between individuals within a species, an Ecuadorian dung beetle. They compared individuals from an intact Amazonian forest …
• Primer Boletín
  by Nico
  February 16, 2023
  Nos enorgullece presentar nuestro Boletín de REASSEMBLY (Reensamblaje), que resume nuestra experiencia, nuevos conocimientos y retos durante el primer año de nuestra Unidad de Investigación. Cada investigador doctoral y postdoctoral presentó aquí su punto de vista personal. Merece la pena leerlo si quiere echar un vistazo al corazón de nuestro empeño científico. El ponente del …
• First Newsletter
  by Nico
  February 7, 2023
  We proudly present our Reassembly Newsletter, summarizing our experience, new insights and challenges during the first year of our Research Unit. Each PhD and postdoctoral researcher presented her or his personal views here – worth reading if you want to get a glimpse into the heart of our scientific endeavor. The project speaker also shared …