Navigation Links
Islands in the sky: How isolated are mountain top plant populations?
Date:1/21/2011

ins than bees. Bees either do not cross the arid valley floors to visit populations on neighboring mountains or, if they do, they may be ineffective at transferring pollen across these long distances. In contrast, hummingbirds may be transferring pollen across very large distancesadditional analysis indicated that hummingbirds may be visiting populations 19 km apart within a mountain range and over 100 km apart on different mountain ranges.

One of the take-home messages from this is that the interaction between pollinators and their landscape differs for different species, and yet this very interaction can have a significant impact on the genetic structure of a plant species' populations. In addition, their results suggest that pollination syndromes do not just capture the morphology and likely pollinators of flowers, but may also impact the population structure and genetic isolation of populations.

There are evolutionary implications as well. Hummingbird pollination has arisen independently in Penstemon at least 10 times, and possibly as many as 20 times, yet a shift back to bee pollination has never been reported. The results from this study may shed light on why that might be. Because populations of a bird-pollinated plant experience greater gene flow among distant populations, there is greater connectivity among these populations. Any changes that might arise due to the local presence of bees would be negated by the gene flow facilitated by birds, which would constrain any adaptations at the local level and prevent plants from shifting back to a more confined bee-pollination syndrome.

Furthermore, the results from Kramer's work can be used directly in restoration efforts. "The Bureau of Land Management is working to increase the species diversity and success of large-scale restoration work on public land in the western United States," Kramer notes. "The BLM supported this work and will be able to put the results of this r
'/>"/>

Contact: Richard Hund
rhund@botany.org
314-577-9557
American Journal of Botany
Source:Eurekalert  

0

GOOD

Page: 1 2 3 4

Related biology news :

1. Satellites pinpoint drivers of urban heat islands in the northeast
2. Humans helped vultures colonize the Canary Islands
3. NOAA divers capture invasive lionfish in the Virgin Islands National Park
4. Magical thinking about islands is an illusion
5. Researchers use entire islands in the Bahamas to test survival of the fittest
6. UC Riverside entomologists say biocontrol of insect pest in the Galapagos Islands is a major success
7. LLNL research at Marshall Islands could lead to resettlement
8. The first men and women from the Canary Islands were Berbers
9. The fragility of the worlds coral is revealed through a study of the Northwestern Hawaiian Islands
10. Ocean islands fuel productivity and carbon sequestration through natural iron fertilization
11. Gene switch sites found mainly on shores, not just islands of the human genome
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Islands in the sky: How isolated are mountain top plant populations?
(Date:5/22/2013)... screening for prostate cancer could become as easy for ... to UC Irvine research published today in the ... more than a decade of work, UC Irvine chemists ... markers for prostate cancer in urine, meaning that the ... and at dramatically lower cost. The same technology could ...
(Date:5/21/2013)... have known for a long time that some creatures ... understood, particularly for plants. But it may be that ... National University and the U. S. National Evolutionary Synthesis ... 21 May in the journal Nature Communications , ... genomes. , Drawing from a database of global patterns ...
(Date:5/21/2013)... Wash. A new analysis shows that the nation,s ... of enough algae to produce up to 25 billion ... States, one-twelfth of the country,s yearly needs. , The ... resources that would be needed to grow significant amounts ... results were published in the May 7 issue of ...
Breaking Biology News(10 mins):UCI chemists devise inexpensive, accurate way to detect prostate cancer 2UCI chemists devise inexpensive, accurate way to detect prostate cancer 3Small but speedy: Short plants live in the evolutionary fast lane 2Going green: Nation equipped to grow serious amounts of pond scum for fuel 2Going green: Nation equipped to grow serious amounts of pond scum for fuel 3Going green: Nation equipped to grow serious amounts of pond scum for fuel 4
... NARRAGANSETT, R.I. August 30, 2010 The ... the University of Rhode Island Graduate School of ... Foundation (NSF) RAPID Response grant through the Foundation,s ... NSF grant, Improving Communication of Oil Spill Research, ...
... It is not an easy task to compare the ... by conventionally fuelled automobiles. The degree to which manufacture, ... the necessary electrical energy are detrimental to the environment ... a team of Empa scientists have made a detailed ...
... MADISON, WI, August 30th, 2010 Undergrads often take ... Iowa State University Department of Horticulture teamed up with ... section to teach students to research and understand literature ... Andrea L. Dinkelman, Jeanine E. Aune, and Gail R. ...
Cached Biology News:Metcalf Institute wins NSF grant to help journalism and communication of oil spill research 2'Greener' than expected 2'Greener' than expected 3Teaching communication and information literacy skills 2
(Date:5/22/2013)... NEW ORLEANS , May 22, 2013  Organogenesis ... medicine, presented new data generated in collaboration with a ... health economics consultancy) demonstrating the significant healthcare resource and ... leg ulcers (VLU) place upon the US healthcare system. ... reveal annual costs of up to $15 billion and ...
(Date:5/22/2013)... Express Diagnostics Int’l, Inc. (EDI) , ... pleased to announce a sponsorship agreement with Erebus Motorsport ... distributor of DrugCheck® onsite testing devices, manufactured by EDI. ... Austin 400 May 17-19 in Austin, Texas. , Royal ... each car of the Erebus Motorsport team displaying the ...
(Date:5/22/2013)... CAMBRIDGE, Mass. , May 22, 2013  Moderna ... revolutionary new treatment modality to enable the in ... John Reynders will join Moderna ... Reynders is a proven leader in ... phases of drug development, from discovery to translation, clinical ...
(Date:5/21/2013)... (PRWEB) May 21, 2013 Through science ... and funds for lab equipment, 25 organizations will continue ... importance of optics and photonics in daily life with ... , The organizations, located in 10 countries, are the ... be awarded by SPIE, the international society for ...
Breaking Biology Technology:Organogenesis Presents Findings from Groundbreaking Research Highlighting the Healthcare Resource and Economic Burden of Venous Leg Ulcers and Diabetic Foot Ulcers 2Organogenesis Presents Findings from Groundbreaking Research Highlighting the Healthcare Resource and Economic Burden of Venous Leg Ulcers and Diabetic Foot Ulcers 3Organogenesis Presents Findings from Groundbreaking Research Highlighting the Healthcare Resource and Economic Burden of Venous Leg Ulcers and Diabetic Foot Ulcers 4Australian Distributor of Express Diagnostics Signs Sponsorship Agreement with V8 Supercar Team 2Industry Leader John Reynders Joins Moderna Therapeutics as Chief Information Officer 2Industry Leader John Reynders Joins Moderna Therapeutics as Chief Information Officer 3Learning About Light: Education Outreach Projects Funded in 10 Countries Through First Round of SPIE Grants 2Learning About Light: Education Outreach Projects Funded in 10 Countries Through First Round of SPIE Grants 3
... -- A new type of active metamaterial that incorporates ... ability to have power gain while retaining its negative ... research. "Our simulation and experimental results show that ... only provided gain, but also maintained the negative index ...
... 9, 2011 ARUP Laboratories, pathologist, Ronald L. Weiss, ... the College of American Pathologists at CAP ,11, the ... According to the CAP, the award honors members "who ... care through the specialty of pathology." (Logo: ...
... NewCardio, Inc., (OTC BB: NWCI) a cardiovascular diagnostic ... will utilize QTinno®, NewCardio,s automated cardiac safety solution, to ... drug under development for a central nervous system (CNS) ... important aspect of the trial. Clinilabs, located ...
Cached Biology Technology:New metamaterial allows transmission gain while retaining negative refraction property 2ARUP Laboratories' Pathologist, Ronald L. Weiss, MD, Honored With Lifetime Achievement Award for Contributions to Patient Care and Pathology 2Clinilabs will Conduct Phase 1 Trial Using QTinno® 2Clinilabs will Conduct Phase 1 Trial Using QTinno® 3Clinilabs will Conduct Phase 1 Trial Using QTinno® 4Clinilabs will Conduct Phase 1 Trial Using QTinno® 5
Rabbit polyclonal to Shigella (HRP) ( Abpromise for all tested applications)....
Rabbit polyclonal to Aortic Elastin ( Abpromise for all tested applications). entrezGeneID: 2006 SwissProtID: P15502...
Rabbit polyclonal to GPR56 ( Abpromise for all tested applications). entrezGeneID: 9289 SwissProtID: Q9Y653...
Mouse monoclonal [2A4] to Cytokeratin 8 + 18 + 19 ( Abpromise for all tested applications). Antigen: Cytokeratins isolated from cultured pig kidney epithelial cells. Entrez GeneID: 3856 S...
Biology Products: