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:4/13/2017)... April 13, 2017 UBM,s Advanced Design and ... will feature emerging and evolving technology through its 3D ... will run alongside the expo portion of the event ... and demonstrations focused on trending topics within 3D printing ... and manufacturing event will take place June 13-15, 2017 at ...
(Date:4/11/2017)... -- NXT-ID, Inc. (NASDAQ:   NXTD ) ("NXT-ID" ... of independent Directors Mr. Robin D. Richards and ... furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief Executive Officer ... guidance and benefiting from their considerable expertise as we move ...
(Date:4/4/2017)... , April 4, 2017   EyeLock LLC ... announced that the United States Patent and Trademark Office ... broadly covers the linking of an iris image with ... transaction) and represents the company,s 45 th issued ... patent is very timely given the multi-modal biometric capabilities ...
Breaking Biology News(10 mins):
(Date:4/21/2017)... ... April 21, 2017 , ... The ... the focus of researchers, engineers, product developers, and industry suppliers gathered last week ... by SPIE, the international society for optics and photonics , the event ...
(Date:4/20/2017)... , ... April 20, 2017 , ... ... , this new webinar will explore challenging patient cases when screening for direct ... hospital, there may be a need for bridging parental anticoagulation especially for those ...
(Date:4/20/2017)... ... April 20, 2017 , ... Husson ... clinical research community’s growing body of knowledge during its Eighth Annual Research ... and the adjacent Darling Atrium. During the event, undergraduates, graduate students, and faculty ...
(Date:4/20/2017)... ... April 20, 2017 , ... Parallel6™ , the leader ... announced today that they were named one of the 2017 Top 10 eClinical ... developments in the pharmaceutical industry. , “We take pride in honoring Parallel6 as one ...
Breaking Biology Technology:
Cached News: