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:4/26/2016)... 2016 Research and Markets has ... Market 2016-2020"  report to their offering.  , ,     ... The analysts forecast the global multimodal biometrics market ... the period 2016-2020.  Multimodal biometrics is ... as the healthcare, BFSI, transportation, automotive, and government ...
(Date:4/13/2016)... physicians supporting Medicaid patients in Central Florida ... telehealth thanks to a new partnership with higi.   ... can routinely track key health measurements, such as blood ... they opt in, share them with IMPOWER clinicians through ... location at no cost. By leveraging this data, IMPOWER ...
(Date:3/22/2016)... India , March 22, 2016 /PRNewswire/ ... market research report "Electronic Sensors Market for Consumer ... Proximity, & Others), Application (Communication & IT, ... Geography - Global Forecast to 2022", published ... industry is expected to reach USD 26.76 ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... , June 23, 2016 A person commits ... the crime scene to track the criminal down. ... U.S. Food and Drug Administration (FDA) uses DNA evidence to ... Sound far-fetched? It,s not. The FDA has ... to support investigations of foodborne illnesses. Put as simply as ...
(Date:6/23/2016)... NEW YORK , June, 23, 2016  The ... students to envision new ways to harness living systems ... of Modern Art (MoMA) in New York ... more than 130 participating students, showcased projects at MoMA,s ... included Paola Antonelli , MoMA,s senior curator of ...
(Date:6/23/2016)... ... 23, 2016 , ... In a new case report published today in STEM ... who developed lymphedema after being treated for breast cancer benefitted from an injection of ... dealing with this debilitating, frequent side effect of cancer treatment. , Lymphedema ...
(Date:6/23/2016)... YORK , June 23, 2016 ... trading session at 4,833.32, down 0.22%; the Dow Jones Industrial ... S&P 500 closed at 2,085.45, down 0.17%. Stock-Callers.com has initiated ... INFI ), Nektar Therapeutics (NASDAQ: NKTR ), ... Therapeutics Inc. (NASDAQ: BIND ). Learn more about ...
Breaking Biology Technology: