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🆕 in "Frontiers in Ecology & the Environment": Sagebrush songbird communities are changing as invasive grasses spread, favoring generalists over specialists & signaling early biodiversity turnover

📄Annual grass invasion is transforming the sagebrush biome’s songbird communities
tinyurl.com/mrukuwj2
(a) The dramatic transformation of sagebrush-steppe to invasive annual grasslands (from left to right) motivated our study of how this transformation affects songbird communities. (b) From a biome-wide pool of survey sites across four major Bird Conservation Regions in the western US, we used matching to retain pairs of sites that differed in invasion status but were otherwise similar (black circles enclosed within blue squares) and discard sites without such matches (black circles without blue squares). Using multispecies occupancy models, we estimated the site-level (c) occurrence and (d) prevalence where present (an index of abundance) for 40 different songbird species. (e) Occurrence and prevalence were combined to estimate guild-level diversity.
January 14, 2026 at 3:30 PM