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:4/13/2017)... , April 13, 2017 According to a new ... Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, ... IAM Market is expected to grow from USD 14.30 Billion in 2017 ... (CAGR) of 17.3%. ... MarketsandMarkets Logo ...
(Date:4/6/2017)... April 6, 2017 Forecasts by ... Document Readers, by End-Use (Transportation & Logistics, Government & ... Gas & Fossil Generation Facility, Nuclear Power), Industrial, Retail, ... Are you looking for a definitive report ... ...
(Date:4/3/2017)... , April 3, 2017  Data ... precision engineering platform, detected a statistically significant ... product prior to treatment and objective response ... the potential to predict whether cancer patients ... to treatment, as well as to improve ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... and LAGUNA HILLS, Calif. , ... of Cancer Research, London (ICR) and ... with SKY92, SkylineDx,s prognostic tool to risk-stratify patients with multiple ... as MUK nine . The University of ... is partly funded by Myeloma UK, and ICR will perform ...
(Date:10/11/2017)... Tampa Bay, Florida (PRWEB) , ... October 11, ... ... Food and Drug Administration (FDA) has granted orphan drug designation to SBT-100, its ... antibody (sdAb) for the treatment of osteosarcoma. SBT-100 is able to cross the ...
(Date:10/10/2017)... ... October 10, 2017 , ... For ... has won a US2020 STEM Mentoring Award. Representatives of the FirstHand program travelled ... Volunteer Experience from US2020. , US2020’s mission is to change the trajectory of ...
(Date:10/10/2017)... CRUZ, Calif. , Oct. 10, 2017 ... grant from the NIH to develop RealSeq®-SC (Single Cell), ... kit for profiling small RNAs (including microRNAs) from single ... Analysis Program highlights the need to accelerate development of ... "New techniques for measuring ...
Breaking Biology Technology: