HOME >> BIOLOGY >> NEWS
Ancient pollen yields insight into forest biodiversity

Arlington, Va.--By analyzing data on tree pollen extracted from ancient lake sediments, ecologists have sharpened the understanding of how forests can maintain a diversity of species. Their findings indicate that stabilizing processes have been more important than previously thought, and that the human-caused loss of species could upset that stability in ways that remain poorly understood.

"Quantifying the link between stability and diversity, and identifying the factors that promote species diversity, have challenged ecologists for decades," said Saran Twombly, program director in the National Science Foundation (NSF)'s division of environmental biology, which funded the research. "The contribution of this study is unique, as the scientists used a clever blend of long-term data and statistical modeling to test the opposing hypotheses of neutrality and stability as key factors promoting community assembly and diversity."

Scientist James Clark and graduate student Jason McLachlan of Duke University, published their findings in this week's issue of the journal Nature.

According to Clark, the purpose of their study was to address a central scientific problem in explaining the diversity of tree species in a forest.

"In the mathematical models ecologists use to describe how different species compete for resources such as light, moisture and nutrients, it can be difficult to get species to coexist," he said. "In models, slight advantages allow one species to 'outcompete' the other, leading to extinction, that is, loss of biodiversity. And so, ecologists have put a lot of effort into trying to understand the differences among species that would allow one species to coexist with another species."

Explaining such coexistence is critical, if ecologists are to truly understand forest biodiversity and the forces that sustain or reduce it, said Clark. According to Clark, two basic hypotheses have arisen to explain forest biodiversity.
'"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
4-Jun-2003


Page: 1 2 3

Related biology news :

1. Ancient life form may help create newest technologies
2. Ancient brewery discovered on mountaintop in Peru
3. Ancient Greeks help scientists build environmentally friendly nano devices
4. Ancient DNA mutations permitted humans to adapt to colder climates, UCI researchers find
5. Ancient Inca road in desperate need of protection
6. Ancient DNA analysis unveils mystery of historys most horribly deformed man -- The Elephant Man
7. Ancient defense mechanism may still be protecting us
8. Ancient flower fossil points to underwater origins
9. Ancient supernova may have triggered eco-catastrophe
10. Ancient Chinese folk remedy may hold key to non-toxic cancer treatment
11. Ancient reptile is efficient chewer

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/2/2016)... 2, 2016 Perimeter Surveillance & ... Systems, Physical Infrastructure, Support & Other Service  ... offers comprehensive analysis of the global Border ... generate revenues of $17.98 billion in 2016. ... a leader in software and hardware technologies for advanced ...
(Date:5/24/2016)... 24, 2016 Ampronix facilitates superior patient care by providing unparalleled technology to ... display is the latest premium product recently added to the range of products distributed ... ... ... Imaging- LCD Medical Display- Ampronix News ...
(Date:5/16/2016)... YORK , May 16, 2016   EyeLock ... solutions, today announced the opening of an IoT Center ... to strengthen and expand the development of embedded iris ... an unprecedented level of convenience and security with unmatched ... authenticate one,s identity aside from DNA. EyeLock,s platform uses ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... 23, 2016 /PRNewswire/ - FACIT has announced the ... biotechnology company, Propellon Therapeutics Inc. ("Propellon" or ... of a portfolio of first-in-class WDR5 inhibitors for ... as WDR5 represent an exciting class of therapies, ... medicine for cancer patients. Substantial advances have been ...
(Date:6/23/2016)... , June, 23, 2016  The Biodesign Challenge (BDC), ... new ways to harness living systems and biotechnology, announced ... (MoMA) in New York City . ... participating students, showcased projects at MoMA,s Celeste Bartos Theater ... Antonelli , MoMA,s senior curator of architecture and design, ...
(Date:6/23/2016)... , June 23, 2016 Apellis ... Phase 1 clinical trials of its complement C3 ... single and multiple ascending dose studies designed to ... (PD) of subcutaneous injection in healthy adult volunteers. ... (SC) either as a single dose (ranging from ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... and technical consulting, provides a free webinar on Performing Quality Investigations: ... 2016 at 12pm CT at no charge. , Incomplete investigations are still a ...
Breaking Biology Technology:
Cached News: