MORALES Carolina Laura
Predicting bee community responses to land-use changes: Effects of geographic and taxonomic biases
DE PALMA ADRIANA; ABRAHAMCZYK STEFAN; MORALES CAROLINA LAURA; OTROS 72 AUTORES, TODOS EXCEPTO LA PRIMERA Y EL ÚLITMO EN ORDEN ALFABÉTICO
Nature Publishing group
Año: 2016 vol. 6 p. 1 - 14
Land-use change and intensification threaten bee populations worldwide, imperilling pollinationservices. Global models are needed to better characterise, project, and mitigate bees´ responsesto these human impacts. The available data are, however, geographically and taxonomicallyunrepresentative; most data are from North America and Western Europe, overrepresentingbumblebees and raising concerns that model results may not be generalizable to other regions andtaxa. To assess whether the geographic and taxonomic biases of data could undermine effectiveness ofmodels for conservation policy, we have collated from the published literature a global dataset of beediversity at sites facing land-use change and intensification, and assess whether bee responses to thesepressures vary across 11 regions (Western, Northern, Eastern and Southern Europe; North, Centraland South America; Australia and New Zealand; South East Asia; Middle and Southern Africa) andbetween bumblebees and other bees. Our analyses highlight strong regionally-based responses of totalabundance, species richness and Simpson´s diversity to land use, caused by variation in the sensitivityof species and potentially in the nature of threats. These results suggest that global extrapolationof models based on geographically and taxonomically restricted data may underestimate the trueuncertainty, increasing the risk of ecological surprises.