Navigation Links
Over the hump: Ecologists use power of network science to challenge long-held theory
Date:9/22/2011

For decades, ecologists have toiled to nail down principles explaining why some habitats have many more plant and animal species than others.

Much of this debate is focused on the idea that the number of species is determined by the productivity of the habitat.Shouldn't a patch of prairie contain a different number of species than an arid steppe or an alpine tundra?

Maybe not, says an international team of scientists that pooled its resources to re-evaluate the relationship between species numbers and habitat productivity.

The innovative, standardized global sampling of 48 sites on five continents yielded an unprecedented data set.

"Our study shows no clear relationship between productivity and the number of plant species in small study plots," says Utah State University plant ecologist Peter Adler.

Scientists say Adler's and his colleagues' findings represent a significant advance in ecological thought. The findings appear in this week's issue of the journal Science.

"We challenged a prevailing model developed in the early 1970s by British ecologist J. Philip Grime," says Adler, lead author of the paper. "He proposed that the number of species rises then declines with increasing productivity."Though hotly debated, this "hump-shaped" model has remained a textbook standard for nearly four decades.

"In the search for underlying principles of ecology in a very complex natural world, it's inevitable that even long-standing and accepted theories will be debunked as more data are accumulated and synthesized," says Henry Gholz, program director in the National Science Foundation's (NSF) Division of Environmental Biology, which funded the research.

In an "Emperor's New Clothes" moment, Adler remembers skeptical observations about the hump-shaped model made by graduate students in his classroom.

"'Why do ecologists spend so much time on this model when the evidence to support it
'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Ecologists use 70-year-old pressed plants to chart citys vanishing native flora
2. Ecologists get fish eye view of sexual signals
3. Ecologists find new clues on climate change in 150-year-old pressed plants
4. Ecologists to discuss impacts of mountaintop mining at special ESA symposium
5. Ecologists receive mixed news from fossil record
6. Nations largest organization of ecologists offers expert database
7. Ecologists discover forests are growing faster
8. Ecologists sound out new solution for monitoring cryptic species
9. The value of variation: Ecologists consider the causes and consequences
10. Ecologists question effects of climate change on infectious diseases
11. Ecologists report quantifiable measures of natures services to humans
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Over the hump: Ecologists use power of network science to challenge long-held theory
(Date:5/20/2015)... , May 20, 2015 /PRNewswire/ ... http://www.researchandmarkets.com/research/h8t4x6/5year ) has announced the addition ... the Global Iris Recognition Market"  report ... , ,This research service analyses trends ... the government and commercial sectors, globally. ...
(Date:5/19/2015)... NEW YORK , May 19, 2015  Technology ... resources both internally and in the cloud. Passwords and ... the use of OTP and standards-based specifications such as ... that the outmoded use of passwords presents for BYOD, ... needs a unified biometric identity protocol. ...
(Date:5/14/2015)... , May 14, 2015 Research and Markets ... of the "Fingerprint Sensors Market in Smart Mobile ... This report believes that 2014 was a watershed year ... Apple,s introduction of ,Apple Pay,. Apple gave fingerprint sensors ... mobile payment service. Fingerprint sensors are a must-have feature ...
Breaking Biology News(10 mins):Global Iris Recognition Market Report 2015 - 5-Year Opportunity Analysis 2HYPR Corp. Biometric Security Integration Kit Shields Applications and Devices Across the Internet of Things 2HYPR Corp. Biometric Security Integration Kit Shields Applications and Devices Across the Internet of Things 3Global Smart Mobile Devices Fingerprint Sensors Market 2015-2019: Key Vendors are Authentec, Validity Sensors, Fingerprint Cards, Next Biometrics Group. IDEX, and Qualcomm 2
... events in the Asia-Pacific region opened at the Hong ... international delegates from over 60 countries. The IOF Regionals ... 15, is organized by the International Osteoporosis Foundation (IOF) ... the Osteoporosis Society of Hong Kong. The Meeting ...
... 2013 The critical enzyme beta-secretase1 (BACE1) is known to ... have now found increased levels of BACE1 in brains with ... for conversion of mild cognitive impairment to AD and may ... in the January issue of The American Journal of ...
... cities vary greatly in their dependence on the global ... of its most common food in its regional hinterland, ... The Copenhagen hinterland produces less than half of the ... time, researchers have mapped the food systems of capital ...
Cached Biology News:Osteoporosis prevention strategies and new bone research focus of major Hong Kong meeting 2Enzyme BACE1 may be important in predicting onset of Alzheimer disease 2Scientists map food security and self-provision of major cities 2Scientists map food security and self-provision of major cities 3
(Date:5/21/2015)... Imagine being able to probe ... of others. Being able to read faces and enjoy ... to anticipate their thoughts and actions like never before. ... to create unique abstract paintings and video, or, play ... a first-person-shooter as it creates action, dialog, and outcomes ...
(Date:5/21/2015)... 2015 Patent Offering, The patent’s technology ... or therapeutic imaging within a body lumen (open space). ... having a low cost, single-use disposable illumination and camera ... October 18, 2013 and the patent approval was received ... physician to customize the lighting and magnification of the ...
(Date:5/21/2015)... 2015 As part of its philanthropic ... Sun Health Foundation funded a $3.25 million project to ... with the most up-to-date features and technology. , The ... pharmacy's 45 staff members will begin moving from the ... the coming days. , The current pharmacy has ...
(Date:5/21/2015)... , May 21, 2015 /PRNewswire/ - RepliCel Life ... stage regenerative medicine company focused on the development ... poster presentation at the International Society for Cellular ... chronic Achilles tendinosis currently in a Phase 1/2 ... 29 th from 5:30 PM to 7:00 ...
Breaking Biology Technology:5 Days to Meet ARGUS - The World's First Contactless Emotions Scanner 2IpAuctions™ Presents The Worlds Smallest Disposable Illuminated Endoscope For Auction 2IpAuctions™ Presents The Worlds Smallest Disposable Illuminated Endoscope For Auction 3Sun Health Foundation Provides $3.25M to Expand, Relocate Banner Del E. Webb Medical Center Pharmacy 2Sun Health Foundation Provides $3.25M to Expand, Relocate Banner Del E. Webb Medical Center Pharmacy 3RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 2RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 3
... the rising trend toward miniaturization, carbon nanotubes which ... and possess several unique and very useful properties ... blocks in nanosized electronic and mechanical devices. But it ... tendency to clump together, that make it difficult for ...
... testament to tight integration and ... excellent ... ), a,leader in radiology and medical image and information management solutions,today ... than 100 facilities that use MEDITECH(TM) as their health,information system. AMICAS ...
... device industry to benefit ... trial recruitment efforts, MINNEAPOLIS, May 27 ... has strengthened the,pharmaceutical side of its business with ... a commitment to leveraging differentiators unique,to the medical ...
Cached Biology Technology:Weizmann Institute scientists create new nanotube structures 2AMICAS Announces Integrations at More Than 100 MEDITECH Facilities 2AMICAS Announces Integrations at More Than 100 MEDITECH Facilities 3ThreeWire Expands Presence in the Pharmaceutical Arena 2
Collected from calves that are 10 days old or less. Sterile, cell culture tested, US Origin...
... Target Retrieval Solution, pH 9 (x 10) ... pH 9, intended for heat-induced target retrieval ... well-suited for use on formalin-fixed, paraffin-embedded tissue ... 0.01 mol/L citrate buffer, pH 6, the ...
MAb to Yersinia pestis F1 Ag. Yersinia pestis F1 Antigen EB Strain...
... any scanner into a gel densitometer. Although ... the basic operation simply consists of converting ... into pixel density / intensity values through ... Turn your scanner into a high speed ...
Biology Products: