Navigation Links
Pollination services at risk following declines of Swedish bumblebees
Date:6/21/2011

Scientists from the Swedish University of Agricultural Sciences and the University of Lund have discovered that the community composition of bumble bee species and their relative abundances have changed drastically over the last 70 years in Sweden. Over the same period, the average seed yield of red clover has declined and variation in yield has doubled, suggesting that the current dependence on few species for pollination of red clover has been detrimental especially to stability in seed yield.

The study was published this week in the Proceedings of the Royal Society B - Biological Sciences and was provided within the frame of the project STEP 'Status and Trends of European Pollinators' that is funded by the European Union Framework Program 7.

The lead author Riccardo Bommarco comments: "It is worrying to see evidence that previously common bumble bee species have become rare and even red-listed. It is possible that such changes in community composition precede extinctions. In our efforts to conserve species and manage ecosystem services is appears important to promote not only species-rich, but also more evenly composed communities of service-providing organisms."

Notable efforts were made from the 1940s to the 1960s to explore pollination and seed production of red clover (Trifolium pratense), which is an important forage crop that is dependent on pollination by bumble bees for seed set. Detailed historic records from the 1940s and 1960s were compared to present data on relative abundances of bumble bee species collected in 2008-2010 in 44 red clover fields across Sweden.

The results show that two species (Bombus terrestris and B. lapidarius) have increased from 40% in the 1940s to entirely dominate present communities with 89%. Other species, such as B. hortorum and B. pascuorum have decreased tenfold in relative commonness, from around 20% to 2% of the observed bumble bees in a flowering clover-field. Notable is also the decline for B. distinguendus from 11% to 0.7%. This species is currently listed as near threatened in Sweden.


'/>"/>

Contact: Riccardo Bommarco
Riccardo.Bommarco@slu.se
46-073-048-5878
Pensoft Publishers
Source:Eurekalert  

Related biology news :

1. Fears of a decline in bee pollination confirmed
2. New $1.5 million NSF grant to track bee declines and pollination
3. TGen Drug Development partners with Imaging Endpoints for comprehensive clinical trial services
4. Aware to Showcase DSL Test Solutions for IPTV Services at IP&TV World Forum
5. Eurofins MWG Operon signs contract to supply DNA sequencing services to Research Councils
6. Novel services for tropical forest monitoring with satellite
7. Comprehensive nutrition services vital to childrens health
8. Almac has Successful MHRA Inspection at its Clinical Services UK Site
9. Stanley Awarded Contracts for Biometrics Services in Support of U.S. Army Intelligence Center
10. Stanley Awarded Contracts for Biometrics Services in Support of U.S. Army Intelligence Center
11. CO2 reduction policies in Spain strengthen the services sector
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Pollination services at risk following declines of Swedish bumblebees
(Date:5/6/2017)... -- RAM Group , Singaporean based technology ... biometric authentication based on a novel  quantum-state ... perform biometric authentication. These new sensors are based on a ... Group and its partners. This sensor will have widespread ... security. Ram Group is a next generation sensor ...
(Date:4/17/2017)... , April 17, 2017 NXT-ID, Inc. (NASDAQ: ... announces the filing of its 2016 Annual Report on Form 10-K ... Commission. ... 10-K is available in the Investor Relations section of the Company,s ... the SEC,s website at http://www.sec.gov . 2016 Year ...
(Date:4/11/2017)... 2017 Research and Markets has announced the ... to their offering. ... eye tracking market to grow at a CAGR of 30.37% during ... Market 2017-2021, has been prepared based on an in-depth market analysis ... and its growth prospects over the coming years. The report also ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... At ... Purple announced Dr. Suneel I. Sheikh, the co-founder, CEO and chief research scientist ... has been selected for membership in ARCS Alumni Hall of Fame . ...
(Date:10/11/2017)... BioMarketing, a leading provider of patient support solutions, has announced ... network, which will launch this week. The VMS CNEs will ... to enhance the patient care experience by delivering peer-to-peer education ... professionals to help women who have been diagnosed and are ... ...
(Date:10/10/2017)... ... 2017 , ... San Diego-based team building and cooking events company, Lajollacooks4u, has ... The bold new look is part of a transformation to increase awareness, appeal to ... period. , It will also expand its service offering from its signature gourmet cooking ...
(Date:10/10/2017)... Oct. 10, 2017 SomaGenics announced the receipt ... to develop RealSeq®-SC (Single Cell), expected to be the ... RNAs (including microRNAs) from single cells using NGS methods. ... need to accelerate development of approaches to analyze the ... "New techniques for measuring levels of mRNAs in ...
Breaking Biology Technology: