Landscape-level human disturbance results in loss and contraction of mammalian populations in tropical forests

Greco Ilaria, Beaudrot Lydia, Sutherland Chris, Tenan Simone, Hsieh Chia, Gorczynski Daniel, Sheil Douglas, Brodie Jedediah, Ahmed Mohammad Firoz, Ahumada Jorge, Amin Rajan, Baker-Watton Megan, Begum Ramie Husneara, Bisi Francesco, Bitariho Robert, Campos-Arceiz Ahimsa, Carvalho Jr Elildo A. R., Cornélis Daniel, Cremonesi Giacomo, Londe de Camargos Virgínia, Elimanantsoa Iariaella, Espinosa Santiago, Fayolle Adeline, Fonteyn Davy, Harihar Abishek, Hilser Harry, Granados Alys, Jansen Patrick A., Mohd-Azlan Jayasilan, Johnson Caspian, Johnson Steig, Lahkar Dipankar, Guimarães Moreira Lima Marcela, Scott Luskin Matthew, Magioli Marcelo, Martin Emanuel H., Martinoli Adriano, Gonçalves Morato Ronaldo, Mugerwa Badru, Pardo Lain E., Salvador Julia, Santos Fernanda, Vermeulen Cédric, Wright Patricia C., Rovero Francesco. 2025. Landscape-level human disturbance results in loss and contraction of mammalian populations in tropical forests. PLoS Biology, 23 (2):3002976, 24 p.

https://doi.org/10.1371/journal.pbio.3002976

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Url - jeu de données - Entrepôt autre : https://doi.org/10.6084/m9.figshare.27939312

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : Tropical forests hold most of Earth's biodiversity and a higher concentration of threatened mammals than other biomes. As a result, some mammal species persist almost exclusively in protected areas, often within extensively transformed and heavily populated landscapes. Other species depend on remaining remote forested areas with sparse human populations. However, it remains unclear how mammalian communities in tropical forests respond to anthropogenic pressures in the broader landscape in which they are embedded. As governments commit to increasing the extent of global protected areas to prevent further biodiversity loss, identifying the landscape-level conditions supporting wildlife has become essential. Here, we assessed the relationship between mammal communities and anthropo- genic threats in the broader landscape. We simultaneously modeled species richness and community occupancy as complementary metrics of community structure, using a state-of-the-art community model parameterized with a standardized pan-tropical data set of 239 mammal species from 37 forests across 3 continents. Forest loss and fragmentation within a 50-km buffer were associated with reduced occupancy in monitored communities, while species richness was unaffected by them. In contrast, landscape-scale human density was associated with reduced mammal richness but not occupancy, suggesting that sensitive species have been extirpated, while remaining taxa are relatively unaffected. Taken together, these results provide evidence of extinction filtering within tropical forests triggered by anthropogenic pressure occurring in the broader landscape. Therefore, existing and new reserves may not achieve the desired biodiversity outcomes without concurrent investment in addressing landscape-scale threats.

Mots-clés Agrovoc : forêt tropicale, biodiversité, distribution géographique, protection de la forêt, paysage, biodiversité forestière, mammifère, genre humain, dynamique des populations, forêt, forêt tropicale humide, couvert forestier