This project contributes to the Blue Green Biodiversity Research Initiative – an Eawag-WSL collaboration focusing on Biodiversity at the interface of aquatic and terrestrial ecosystems.
Global anthropogenic change affects biodiversity and community composition
with likely consequences for ecosystem functioning. Studies addressing the
impacts of land use on multiple ecosystem functions (multifunctionality)
have mainly focused on local richness. However, since no single assemblage
can host all functions, species turnover across different local assemblages
may be especially important for maintaining multifunctionality in a
landscape. Here we will study (1) the relative role of land-use change at
the local and landscape scale as a driver of taxonomic and functional
homogenization (loss of β-diversity) in both terrestrial and aquatic
ecosystems; (2) the signature of community homogenization in terrestrial
and aquatic systems along gradients of land-use intensity, disentangling
the relative contributions of richness differences and replacements of
species or functions.