Navigation Links
New research confirms plight of bumble bees, persistence of other bees in Northeast
Date:3/4/2013

A new study shows that although certain bumble bees are at risk, other bee species in the northeastern United States persisted across a 140-year period despite expanding human populations and changing land use. Led by Rutgers University and based extensively on historical specimens from the American Museum of Natural History and nine other bee collections, the study informs conservation efforts aimed at protecting native bee species and the important pollinator services they provide. The results are published today in Proceedings of the National Academy of Sciences.

Eighty-seven percent of the world's flowering plants, including most of the leading global food crops, are pollinated by animals. Bees are considered the most important pollinators because of their efficiency, specificity, and ubiquity. However, despite concerns about pollinator declines, long-term data on the status of bee species are scarce.

In the new study, the researchers used new web-based software to compile 30,000 museum specimen records representing 438 bee species.

"A novel aspect of this study was the use of collaborative online tools that allowed data to be captured quickly and accurately across 10 institutions, many of which lacked pre-existing capabilities in this area," said John Ascher, a research scientist in the Museum's Division of Invertebrate Zoology and an author on the paper who led the data-collection effort.

From the years 1872 to 2011, the authors observed slight declines in the number of bee species in comparable samples from the northeastern United States. Statistical analysis revealed that only three species exhibited a rapid and recent population collapseall species of bumble bees, which also have been shown to be declining in previous studies. Other species, including the oil bee Macropis patellata, showed more gradual declines.

Although few species were found to have severely declined, more than half of all bee species changed in proportion over time, with 29 percent of the species decreasing and 27 percent increasing. Bees that showed the greatest increase are mostly exotic species that were introduced to North America. Few such species were present in the earliest historical samples but they make up an ever-increasing proportion of more recent samples.

"Environmental change affects species differentially, creating 'losers' that decline with increased human activity but also 'winners' that thrive in human-altered environments," said Ignasi Bartomeus, lead author on the paper who conducted this work as a postdoctoral researcher at Rutgers University. "Certain traits can make species more vulnerable."

The scientists found that declining bee species tend to have larger body sizes, restricted diets, and shorter flight seasons.

They also revealed that "southern" bees reaching their northern distributional limits in the Northeast are increasing, a finding that could reflect a response to climate change. The average April temperature increased by more than one degree during the last 40 years in the study region, causing bees and their host plants to emerge earlier in the season.

Ongoing data capture will continue to expand the bee database so that statistical analyses can be applied across a broader geographic area and to a wider range of species, especially those that are rare in collections and potentially of greatest conservation concern.


'/>"/>

Contact: Kendra Snyder
ksnyder@amnh.org
212-496-3419
American Museum of Natural History
Source:Eurekalert  

Related biology news :

1. Biometrics Market Research Updates From Global Information
2. Researchers id queens, mysterious disease syndrome as key factors in bee colony deaths
3. Illinois town provides a historical foundation for todays bee research
4. Research unearths new dinosaur species
5. New method for researching understudied malaria-spreading mosquitoes
6. Fighting GM crop vandalism with a government-protected research site
7. Sequester will have a devastating impact on americas research enterprise
8. US and French long-term ecological research networks agree to share knowledge and skills
9. Study led by NUS researchers proves the existence of 3 overstretched DNA structures
10. Research supports promise of cell therapy for bowel disease
11. Sequestration will be a devastating blow to the nations research institutions and scientists
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New research confirms plight of bumble bees, persistence of other bees in Northeast
(Date:4/11/2017)... Apr. 11, 2017 Research and Markets has ... report to their offering. ... The global eye tracking market to grow at a CAGR of ... Eye Tracking Market 2017-2021, has been prepared based on an in-depth ... market landscape and its growth prospects over the coming years. The ...
(Date:4/11/2017)... , April 11, 2017 NXT-ID, ... security technology company, announces the appointment of independent Directors Mr. ... to its Board of Directors, furthering the company,s corporate ... ... NXT-ID, we look forward to their guidance and benefiting from ...
(Date:4/5/2017)... SEATTLE , April 5, 2017  The Allen ... the Allen Cell Explorer: a one-of-a-kind portal and dynamic ... large-scale 3D imaging data, the first application of deep ... edited human stem cell lines and a growing suite ... the platform for these and future publicly available resources ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... launched Rosalind™, the first-ever genomics analysis platform specifically designed for life science ... in honor of pioneering researcher Rosalind Franklin, who made a major contribution ...
(Date:10/11/2017)... YORBA LINDA, CA (PRWEB) , ... October 11, ... ... adapted to upregulate any gene in its endogenous context, enabling overexpression experiments and ... activation (CRISPRa) system with small RNA guides is transformative for performing systematic gain-of-function ...
(Date:10/11/2017)... ... 11, 2017 , ... ComplianceOnline’s Medical Device Summit is back for its 4th ... in San Francisco, CA. The Summit brings together current and former FDA office bearers, ... and government officials from around the world to address key issues in device compliance, ...
(Date:10/11/2017)... 2017  VMS BioMarketing, a leading provider of patient support ... Nurse Educator (CNE) network, which will launch this week. The ... health care professionals to enhance the patient care experience by ... other health care professionals to help women who have been ... ...
Breaking Biology Technology: