Navigation Links
Shade-coffee farms support native bees that maintain genetic diversity in tropical forests
Date:7/26/2010

Shalene Jha investigated the role of native bees that pollinate native trees in and around shade-grown coffee farms in the highlands of southern Chiapas, Mexico. In their study area, tropical forest now represents less than 10 percent of the land cover.

Jha and Dick wanted to determine the degree to which native bees, which forage for pollen and nectar and pollinate trees in the process, facilitate gene flow between the remnant forest and adjacent shade-coffee farms.

They focused on Miconia affinis, a small, native understory tree that many farmers allow to invade shade-coffee farms because the trees help control soil erosion.

M. affinis, commonly known as the saquiyac tree, is pollinated by an unusual method known as buzz pollination. In order to release pollen from the tree's flowers, bees grab hold and vibrate their flight muscles, shaking the pollen free. Non-native Africanized honeybees don't perform buzz pollination, but many native bees do.

"Our focus on a buzz-pollinated tree allowed us to exclude Africanized honeybees and highlight the role of native bees as both pollinators and vectors of gene flow in the shade-coffee landscape mosaic," said Jha, a postdoctoral fellow at UC-Berkeley who conducted the research while earning her doctorate at U-M.

Jha and Dick combined field observations with seed-parentage genetic analysis of Miconia affinis. They found that trees growing on shade-coffee farms received bee-delivered pollen from twice as many donor trees as M. affinis trees growing in the adjacent remnant forest. The higher number of pollen donors translates into greater genetic diversity among the offspring of the shade-farm trees.

Seed parentage analysis revealed that pollen from forest trees sired 65.1 percent of the seeds sampled from M. affinis trees growing in a shade-coffee habitat. That finding demonstrates that native bees are promoting gene flow between the remnant forest and the coffee farms---
'/>"/>

Contact: Jim Erickson
ricksn@umich.edu
734-647-1842
University of Michigan
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Turning freshwater farm ponds into crab farms
2. A win-win: U-pick pumpkin farms recycle urban leaves
3. Tilting at wind farms
4. When fish farms are built along the coast, where does the waste go?
5. Half of the fish consumed globally is now raised on farms, study finds
6. Half of the fish consumed globally is now raised on farms, study finds
7. A balanced protein diet can reduce accumulation of nitrogen on dairy cattle farms by up to 35 percent
8. Oklahoma researchers support biodiversity in biofuels production
9. ICSU launches new program to understand the human impact on Earths life-support systems
10. SAIC Awarded $37 Million Contract to Support U.S. Army Program Executive Office - Enterprise Information Systems
11. The MDS foundation supports vidazas recommendation for European approval
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Shade-coffee farms support native bees that maintain genetic diversity in tropical forests
(Date:9/15/2014)... Mass. (September 15, 2014) The so-called central ... makes proteinhas long provided a simplified explanation for ... living organisms. , In reality, of course, ... schema first articulated nearly 60 years ago by ... double-helix structure. For one, there are multiple types ...
(Date:9/15/2014)... both plants and animals alike. , Understanding just how ... to the design of better drugs for diabetes patients ... vegetables farmers are able to grow. Stanford University researchers ... cell by piecing together proteins slightly wider than the ... determine the size, shape and orientation of one of ...
(Date:9/15/2014)... will allow us to better understand how the ... scenarios and provide the type of environmental data ... and siting of protected areas," said Paula Whitfield, ... Coastal Ocean Science (NCCOS) and lead author of ... within the temperate-tropical transition zone, where historically, both ...
Breaking Biology News(10 mins):Scientists discover RNA modifications in some unexpected places 2X-rays unlock a protein's SWEET side 2X-rays unlock a protein's SWEET side 3Study finds warming Atlantic temperatures could increase range of invasive species 2
... D.C., November 21, 2010 -- For centuries, hunters have imitated ... carving wooden bird calls. Now a team of physicists at ... characteristics of real bird song with a simple physical model ... know if you [could] build a simple device, which has ...
... baby,s first blurted "bowl!," for the word "ball" to the ... vocalizations is one of humankind,s most remarkable attributes -- and ... Not so for people who are afflicted with ... stigma of affected speech. Nor so for engineering professor Michael ...
... , Researchers in the United States have developed a ... from a patient,s own bone marrow. The research, published ... suffering from abnormally developed bladders, but also represents another ... research, led by Dr Arun Sharma and Earl Cheng ...
Cached Biology News:Simple rubber device mimics complex bird songs 2Air flows in mechanical device reveal secrets of speech pathology 2New study into bladder regeneration heralds organ replacement treatment 2
(Date:9/16/2014)... In preparation for VARTECH 2014, 2FA, Inc., ... focused on authentication and SSO announced today that their ... generate a OTP through the presentation of an RFID ... RFID authentication, 2FA,s solutions have leveraged the existence of ... RFID authentication is broadly deployed in healthcare and other ...
(Date:9/15/2014)... Sept. 15, 2014   Global Science & ... scientific products and services for satellite and weather ... for Integrated Services (OASIS) from the General Services ... selected to provide the government best-value solutions for ... (SB) category in Pool 4. The OASIS SB ...
(Date:9/15/2014)... a patient has sepsis, a life-threatening condition in which ... often too fast for antibiotics to help. A new ... a team at Harvard,s Wyss Institute for Biologically Inspired ... , "Even with the best current treatments, sepsis ... 30 percent of the time," said Mike Super, Ph.D., ...
(Date:9/15/2014)...  iVinci Health LLC, the company behind the healthcare ... branded as VisitPay®, has successfully closed $5 million in ... a new extension to VisitPay® – an online Payment ... way for patients to manage their medical bills and ... their families. The new round of funding, ...
Breaking Biology Technology:2FA, Inc. Announces RFID-based One-Time Password (OTP) Authentication 2Global Science & Technology, Inc. Awarded GSA OASIS Small Business Contract 2Global Science & Technology, Inc. Awarded GSA OASIS Small Business Contract 3Blood-cleansing biospleen device developed for sepsis therapy 2Blood-cleansing biospleen device developed for sepsis therapy 3Blood-cleansing biospleen device developed for sepsis therapy 4iVinci Health Raises $5M to Fuel National Expansion, Announces Launch of Personal Finance Portal for Healthcare 2iVinci Health Raises $5M to Fuel National Expansion, Announces Launch of Personal Finance Portal for Healthcare 3
... FRANCISCO, Calif., Nov. 1, 2010 diaDexus, Inc. (OTC ... focused on the development and commercialization of patent-protected ... cardiovascular disease, today announced that the company, formerly known ... Board under the ticker symbol (VXGN), has been renamed ...
... Nov. 1, 2010 Amgen (Nasdaq: AMGN ) ... Ph.D., will urge members of a U.S. Food and Drug ... to establish approval standards that ensure patient safety and follow ... policy will follow," Dr. Miletich said.  "Amgen believes biosimilars have ...
... ... ... var shortURL = ""; BitlyCB.alertResponse = function(data) ... first one. for (var r in data.results) { first_result = data.results[r]; break; } for (var key in first_result) { ...
Cached Biology Technology:diaDexus Announces Name Change From VaxGen 2diaDexus Announces Name Change From VaxGen 3Amgen to Provide Testimony at FDA Hearing on Biosimilars 2Amgen to Provide Testimony at FDA Hearing on Biosimilars 3Amgen to Provide Testimony at FDA Hearing on Biosimilars 4NEURO-BIOTECH CORPORATION: Updates and latest developments 2NEURO-BIOTECH CORPORATION: Updates and latest developments 3NEURO-BIOTECH CORPORATION: Updates and latest developments 4NEURO-BIOTECH CORPORATION: Updates and latest developments 5NEURO-BIOTECH CORPORATION: Updates and latest developments 6NEURO-BIOTECH CORPORATION: Updates and latest developments 7NEURO-BIOTECH CORPORATION: Updates and latest developments 8NEURO-BIOTECH CORPORATION: Updates and latest developments 9
Request Info...
...
... High Resolution - Efficiently ... 50 to 1000 bp. ... sizing PCR fragments, small ... restriction enzyme digestion, and ...
... ZMD.358. Immunogen: Synthetic peptide ... of human mouse and rat ... human and mouse LRP5 proteins. ... controls: mouse LRP5-pSEC-tag-transfected 293T cells ...
Biology Products: