The impact of habitat structure change on arthropod food web complexity in Azorean forests
- NameSébastien Lhoumeau
- Host entityCE3C / Grupo da Biodiversidade dos Açores | Atlantic International Research Centre
- University awardingUniversity of Azores
- Quantify and qualify habitat structure of Azorean forests using novel techniques (e.g. LIDAR, Space Syntax,Network analysis etc).
- Assess network complexity between several trophic groups of arthropods, obtaining an overview of food web complexity in Azorean native and exotic forests.
- Using a long-term dataset (2012-2022) quantify the impact seasonal and temporal environmental changes on network complexity between several trophic groups of arthropods.
- Evaluate the impact of disturbance on insect top-predators (Hymenoptera: Parasitica)
Results & Impact
- We predict that airborne LiDAR-derived variables characterizing vegetation structure will work as predictors for forest arthropod diversity and biomass.
- We predict that arthropod network complexity will be related with habitat structure and complexity.
- Since performance of structural models decline from herbivores to predators, we predict that more complex forest understory will have more diverse predator communities.
- We predict that Hymenoptera parasitoids will be highly susceptible to changes in environmental conditions, since they depend on a series of adaptations to the ecology and physiology of their hosts and host plants for survival.
- We predict that land-use changes from native forest to exotic mixed forests and associated disturbances in Azores is creating habitat homogenization and simplification with a negative impact on top-predators diversity.
- ArticleAssessing the Impact of Insect Decline in Islands: Exploring the Diversity and Community Patterns of Indigenous and Non-Indigenous Arthropods in the Azores Native Forest over 10 Years