13
Jul
(Beyond Pesticides, July 13, 2015) Many factors have been identified in bee and other pollinator decline across the globe, including loss of habitat, disease, and pesticides. A  new study from researchers in North American and Europe finds that the  changing climate also plays a vital role in decreasing bee habitat and thus reducing populations. The study reports that North American and European bumble bees are unable to colonize new warmer habitats north of their historic range, while simultaneously disappearing from the southern portions of their range. Published in Science, the study,  Climate change impacts on bumblebees converge across continents,  which is a comprehensive look at 67 bumblebee species and their territories over the last century, finds that many North American and European bumblebees have retreated from the southern edge of their historic ranges (away from the equator). While other species of animals have been able to adapt to climate change by expanding their habitats, bumblebees have not shifted to warming northern climes and are experiencing shrinking distributions in the southern ends of their range. The rusty patched bumblebee (Bombus affinis), for instance, has disappeared from parts of the southeastern U.S. Bumblebees are also retreating to higher elevations, shifting upward by […]
Posted in Announcements, Chemicals, Climate Change, Habitat Protection, National Politics, neonicotinoids, Pesticide Regulation, Pesticide Residues, Pollinators, Take Action, Wildlife/Endangered Sp. | No Comments »
17
Mar
(Beyond Pesticides, March 17, 2015) Foraging bumblebees would prefer to dodge traffic rather than pesticides and other agricultural chemicals, according to the results of a new study published in the Journal of Insect Conservation. Researchers from Plymouth University in England discovered that the number of bumblebees observed foraging plants along roadsides was over twice the number located in adjacent patches facing agricultural crops. As both native and managed bees continue to decline throughout the globe, this research strengthens calls from farming and environmental groups to improve agricultural practices through increased on-farm diversity, and sharp reductions in the use of pesticides, particularly systemic chemicals such as neonicotinoids. Mick Hanley, Ph.D., lead author of the study, explains, “There have been hedgerows and field boundaries in these locations for centuries, and even if you go back 50 or 60 years, you would not have  seen this phenomenon. Both sides of hedgerows would have been flourishing, and bees and other insects would have been numerous on both sides, but that was before an increase in the use of fertilizers.†However, it is likely the use of agrichemicals that has caused such a stark discrepancy between roadside and farm-side habitats. “Now what you see is […]
Posted in Agriculture, Alternatives/Organics, Chemicals, Habitat Protection, National Politics, neonicotinoids, Pesticide Regulation, Pollinators, Take Action | No Comments »
