REASSEMBLY

Reassembly of species interaction networks

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:

  • Sample coverage matters: succession of bird communities
    by Nico
    Biodiversity metrics are affected by variation in sampling completeness, and notoriously underestimate the species’ diversity in a site. Recently, statistical tools have been developed to estimate and account for biases in sample coverage. These tools allow researchers to compare observed and expected diversity metrics and their change along gradients. This approach has been applied by …
  • Aricle in MONGABAY on Reassembly
    by Nico
    “A story of hope and opportunity…”. The non-profit conservation and environmental science news platform MONGABAY published an article on our research findings in the project Reassembly. Journalist Ruth Kamnitzer interviewed us and wrote the following article – worth reading:
  • Reassembly in Amsterdam
    by Nico
    Many members of Reassembly actively participated at the 8th European Conference of Tropical Ecology in Amsterdam from 24 to 28 February 2025. Our PhD candidates and postdocs organized a session on tropical ecosystem recovery, presented their work in talks and posters and contributed to lively discussions. And finally, both Malika Gottstein and Timo Metz won …
  • Published: The basic article for Reassembly!
    by Nico
    All our scientific research in Reassembly on the recovery of species communities, interactions and ecosystem processes is based on a common design: our ‘chronosequence‘ is a set of 62 plots of different regeneration ages. It includes agricultural plots still in use, secondary forests 0 to over 38 years old, and undisturbed old-growth forests. This “space-time …
  • Snuggling up: courtship behaviour of the Northern Eyelash Boa described for the first time
    by Nico
    The Northern Eyelash Boa (Tropidophis boulengeri) is endemic to the Chocó and is one of the most spectacular snakes. Especially during rainy nights in the lowland forests, they can be seen inside or near small and large rivers. These snakes often wait motionless with their heads submerged in the water in an ambush position from …