Strong variation in land-use change impacts on tropical avian phylogenetic diversity between ecoregions highlights the need to sample large spatial scales

Forest conversion for agriculture is a major cause of tropical biodiversity loss. Quantifying the biodiversity impacts of forest loss is challenging because the severity of outcomes is influenced by spatial scale, with the higher rate of species turnover in forests than in farmland increasing the severity of losses at larger relative to smaller scales. Conservation efforts increasingly prioritise phylogenetic diversity to preserve unique evolutionary history under global change, but how deforestation-driven changes in phylogenetic diversity vary across large spatial scales remains a key question. We compiled a large field database from across 13 biogeographically diverse regions affected by deforestation for cattle farming, covering most of Colombia, a megadiverse tropical country. We use occupancy models to estimate bird communities for 1,614 species across 13 ecoregions and nationally in both forest and pasture habitats. This dataset includes base information and scripts to quantify s..., , # Data from: Strong variation in land-use change impacts on tropical avian phylogenetic diversity between ecoregions highlights the need to sample large spatial scales

Dataset DOI: [10.5061/dryad.6hdr7srcx](10.5061/dryad.6hdr7srcx)

## Description of the data and file structure

All data and scripts are provided in a zip folder.

Dataset includes field detections of birds, model outputs and spatial data from Socolar and Mills et al (2025), but adapted for the aims of this research (i.e not identical to their datasets)

Scripts follow the procedures to take occupancy probability of each bird species in forest and pasture habitats and obtain avian communities across ecoregions and national scale in Colombia, then use them along with phylogenetic tress to six compute metrics of phylogenetic diversity at each ecoregions and then by combining ecoregions to reach a national scale. finally it assesed misestimation of phylogenetic diversity change from ecoregion compared to national levels.

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