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Data and code from: Landscape structure shapes the equilibrium between migratory and sedentary species in avian breeding communities along an altitudinal gradient

Rault, Charlotte12

Research facility: Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale
Published May 04, 2026 on Dryad. https://doi.org/10.5061/dryad.5hqbzkhh4

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May 04, 2026 version files 121.98 KB

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Abstract

Anthropogenic land use is a major driver of landscape transformation and poses a significant threat to avian biodiversity. However, its effects do not occur in isolation, as environmental gradients such as altitude can interact with land-use patterns to shape ecological communities in complex ways. In particular, how these interacting factors influence the assembly and balance between long-distance migratory and sedentary bird species remains insufficiently understood. Focusing on avian breeding communities in southern France, this study investigates how the equilibrium between migratory and resident species varies across a regional altitudinal gradient of approximately 4000 meters. Using data at a 5 × 5 km resolution, we assess how this balance responds to altitude in combination with landscape structure, including habitat diversity, habitat evenness, forest cover, and overall species richness. The associated dataframe and analytical scripts are provided to enable full replication of the study’s analyses and figures (Figures 2, 3, and 4).