BACKGROUND The species richness of wild bees and other pollinators has declined over
the past 50 years, with some species undergoing major declines and a few going extinct …

Bumble bees (Bombus) are unusually important pollinators, with approximately 260 wild
species native to all biogeographic regions except sub-Saharan Africa, Australia, and New …

Recent case studies showing substantial declines of insect abundances have raised alarm,
but how widespread such patterns are remains unclear. We compiled data from 166 long …

There is mounting evidence of species redistribution as climate warms. Yet, our knowledge
of the coupling between species range shifts and isotherm shifts remains limited. Here, we …

Current climate change may be a major threat to global biodiversity, but the extent of species
loss will depend on the details of how species respond to changing climates. For example, if …

For many species, geographical ranges are expanding toward the poles in response to
climate change, while remaining stable along range edges nearest the equator. Using long …

Poleward and upward shifts are the most frequent types of range shifts that have been
reported in response to contemporary climate change. However, the number of reports …

Studies have documented climate change–induced shifts in species distributions but
uncertainties associated with data and methods are typically unexplored. We reviewed 240 …

Studies have reported widespread declines in terrestrial insect abundances in recent years,,–
, but trends in other biodiversity metrics are less clear-cut,–. Here we examined long-term …

There is strong evidence that variations in climatic conditions deeply affect the bumblebee
fauna (eg Williams et al., 2007; Bartomeus et al., 2013a; Pradervand et al., 2014), and recent …