Navigation Links
Research shows that environmental factors limit species diversity
Date:12/20/2010

It's long been accepted by biologists that environmental factors cause the diversityor numberof species to increase before eventually leveling off. Some recent work, however, has suggested that species diversity continues instead of entering into a state of equilibrium. But new research on lizards in the Caribbean not only supports the original theory that finite space, limited food supplies, and competition for resources all work together to achieve equilibrium; it builds on the theory by extending it over a much longer timespan.

The research was done by Daniel Rabosky of the University of California, Berkeley and Richard Glor of the University of Rochester who studied patterns of species accumulation of lizards over millions of years on the four Caribbean islands of Puerto Rico, Jamaica, Hispaniola, and Cuba. Their paper is being published December 21 in the journal, Proceedings of the National Academy of Sciences.

Glor and Rabosky focused on species diversitythe number of distinct species of lizardsnot the number of individual lizards.

"Geographic size correlates to diversity," said Glor. "In general, the larger the area, the greater the number of species that can be supported. For example, there are 60 species of Anolis lizards on Cuba, but far fewer species on the much smaller islands of Jamaica and Puerto Rico." There are only 6 species on Jamaica and 10 on Puerto Rico.

Ecologists Robert MacArthur of Princeton University and E.O. Wilson of Harvard University established the theory of island biogeography in the 1960s to explain the diversity and richness of species in restricted habitats, as well as the limits on the growth in number of species. Glor said the MacArthur-Wilson theory was developed for ecological time-scales, which encompass thousands of years, while his work with Rabosky extends the concepts over a million years. "MacArthur and Wilson recognized the macroevolutionary implications of their work," ex
'/>"/>

Contact: Peter Iglinski
585-273-4726
University of Rochester
Source:Eurekalert

Page: 1 2

Related biology news :

1. The orange in your stocking: researchers squeezing out maximum health benefits
2. Damon Runyon Cancer Research Foundation awards breakthrough scientists
3. Reducing emissions from shipping: Commissions Joint Research Centre sets out some options
4. Researchers discover human immune system has emergency backup plan
5. New research shows virus previously linked to chronic fatigue syndrome is a lab contaminant
6. German federal government bolsters neutron research in Garching
7. K-State research looks at pathogenic attacks on host plants
8. Scripps Research scientists show prions mutate and adapt to host environment
9. Researcher finds proximity to freeway associated with autism
10. Breakthrough in worm research has implications for human disease studies
11. Autism Speaks awards 21 new research grants funding
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/15/2014)... 12, 2014 Research and Markets ... the "Global Facial Recognition Market 2015-2019" ... http://photos.prnewswire.com/prnh/20130307/600769 Facial recognition is ... Facial recognition system measures the overall facial feature ... mouth, and the distance between eyes. Facial recognition ...
(Date:12/11/2014)... , Dec. 10, 2014  Data Sciences ... monitoring, has released a new series of digital ... preclinical toxicology researchers. M series, part of the ... collect the best possible physiologic data when incorporating ... Adding functional endpoints to toxicology studies has evolved ...
(Date:12/10/2014)... 9, 2014 CIE San Diego has launched ... the connective tissue that enhances care coordination among social ... share client-level information; earned a second $1 million grant ... serving seniors aging in community and; will be recognized ... 11 th 4-6p. CIE San Diego ...
Breaking Biology News(10 mins):Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3New telemetry implants expected to change how large animal toxicology studies are conducted 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 4
... associated with Crohn,s disease have been discovered, more ... the disease. An international consortium of Crohn,s disease ... researchers Dr. John D. Rioux from Montreal ... Mark Silverberg and Hillary Steinhart from Mount Sinai ...
... of mitochondrial disorders using directed enzyme replacement therapy (DERT) ... candidate one of this year,s Kaye Innovation Awards. The ... the Hebrew University Board of Governors. DERT ... deficient or absent enzyme is artificially manufactured with the ...
... the recent demise of billions of honey bees after making ... virus. Deformed wing virus (DWV) is passed between adult bees ... Varroa destructor when it feeds. However, research published in the ... suggests that the virus does not replicate in Varroa, highlighting ...
Cached Biology News:Montreal Heart Institute and Mount Sinai Hospital researchers contribute to Crohn's disease study 2Hebrew University develops novel approach for treating mitochondrial disorders 2Bee disease a mystery 2
(Date:12/24/2014)... December 23, 2014 Nashville Fertility Center ... elected treasurer for the American Society for Reproductive Medicine ... and research in reproductive medicine. In his new ... on the executive board and will have a voice ... Hill has actively supported ASRM since 1984 when he ...
(Date:12/24/2014)... BEIJING , Dec. 23, 2014 ... or the "Company"), a leading fully integrated plasma-based ... today announced that its majority-owned subsidiary, Shandong Taibang ... Practices ("GMP") certification from the China Food and ... factor production facility. As previously disclosed in the ...
(Date:12/24/2014)... Dec. 23, 2014 Sigma-Aldrich Corporation (NASDAQ: ... waiting period under the Hart-Scott-Rodino Antitrust Improvements Act ... on December 22, 2014, thereby completing the U.S. ... the acquisition of the Company by Merck KGaA, ... satisfies another condition to closing the transaction, which ...
(Date:12/22/2014)... & Brussels (PRWEB) December 22, 2014 ... (CfPIE), the global leader of technical training across the ... for Clinical Data Management (SCDM) to provide the ... certification programs —providing access to the more than ... extends SCDM members with 10% off when registering for ...
Breaking Biology Technology:Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 2Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 3China Biologic Receives GMP Certification for New Coagulation Factor Facility 2China Biologic Receives GMP Certification for New Coagulation Factor Facility 3Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 3CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3
... hand-held medical device will help UK athletes reach the ... competitions. UK Sport, the UK,s high performance sports agency, ... to use cutting edge technology developed by Argento Diagnostics ... will be able to monitor various proteins which reveal ...
... marine biologists and signal-processing experts from Rice University, the ... U.S. universities have won a $6 million grant from ... of nature,s best camouflage artists. Ultimately, the team hopes ... skin colors and patterns produced by marine animals. ...
... benchtop version of the world,s smallest battery its ... a human hair has been created by a team ... To better study the anode,s characteristics, the tiny rechargeable, ... (TEM) at the Center for Integrated Nanotechnologies (CINT), a ...
Cached Biology Technology:Medical science helps UK athletes reach peak performance 2Medical science helps UK athletes reach peak performance 3Nano squid skin: DOD awards $6M for metamaterials research 2Nano squid skin: DOD awards $6M for metamaterials research 3World's smallest battery created at CINT nanotechnology center 2World's smallest battery created at CINT nanotechnology center 3
Control primers and template for 5kb and 15 kb products....
Carrier Serum...
The Lambda Control Kit contains lambda DNA and two 25mer primers, which can be used to amplify a 500bp fragment. The lambda DNA is purified by CsCl gradient centrifugation and organic extraction foll...
A robust formulation of Taq Polymerase supplied with a 10X colored reaction buffer which allows Direct Gel-Loading...
Biology Products: