INVESTIGADORES
AIZEN Marcelo Adrian
artículos
Título:
Worldwide occurrence records suggest a global decline in bee species richness
Autor/es:
ZATTARA, E.; AIZEN, M.A.
Revista:
One Earth
Editorial:
Cell Press
Referencias:
Año: 2021 vol. 4 p. 114 - 123
ISSN:
2590-3330
Resumen:
Wild and managed bees are key pollinators, ensuring or enhancing the reproduction of a large fraction of the world?s wild flowering plants and the yield of 85% of all cultivated crops. Recent reports of wild bee decline and its potential consequences are thus worrisome. However, evidence is mostly based on local or regional studies; the global status of bee decline has not been assessed yet. To fill this gap, we analyzed publicly avail-able worldwide occurrence records from the Global Biodiversity Information Facility spanning over a century. We found that after the 1990s, the number of collected bee species declines steeply such that approximately 25% fewer species were reported between 2006 and 2015 than before the 1990s. Although these trends must be interpreted cautiously given the heterogeneous nature of the dataset and potential biases in data collec-tion and reporting, results suggest the need for swift actions to avoid further pollinator decline.