Navigation Links
Study: Ecological effects of biodiversity loss underestimated
Date:11/30/2010

ses, hundreds of species in an ecosystem. Rudolf said Lafferty's food webs include data about specific resource requirements for particular developmental stages within species, in some instances for as many as 50 percent of the species in the ecosystem.

"With this data, we were able to estimate the percentage of resources that are actually shared among developmental stages," Rudolf said. "In addition, we were able to show how this affects the stability of natural ecosystems.

"We found that in most food webs, the individual stages of a species typically share less than 50 percent of their resources," he said. "And within certain subgroups, like metamorphic species, that number is sometimes less than 10 percent."

The researchers used the information to formulate computer models that simulated how the loss of species affects natural ecosystems. One important implication of the finding is that natural ecosystems are much less stable than previously assumed, and many at-risk species may face an even greater likelihood of becoming extinct than ecologists previously thought.

"Our results suggest that the increasing loss of biodiversity -- due to changing climate, habitat destruction and other causes -- will likely have much more devastating effects on natural communities and result in a greater number of species extinctions than previously believed," Rudolf said.


'/>"/>

Contact: David Ruth
druth@rice.edu
713-348-6327
Rice University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study: urban black bears live fast, die young
2. Study: Bird diversity lessens human exposure to West Nile Virus
3. Study: Tropical wetlands hold more carbon than temperate marshes
4. Study: Wildlife need more complex travel plans
5. Study: Elderly Women can increase strength but still risk falls
6. UNC study: Text messaging may help children fight off obesity
7. Study: Did early climate impact divert a new glacial age?
8. Study: Excessive use of antiviral drugs could aid deadly flu
9. UNC study: Tinkering with the circadian clock can suppress cancer growth
10. Study: Fluid buildup in lungs is part of the damage done by the flu
11. Study: Health undervalued in reproductive rights debate
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/29/2014)... Until recently, little has been known about what genetic ... team of scientists, one of whom is a University ... showing that genes controlling the development of the brain ... domestication., The study was published Aug. 28 in ... It is online at http://www.sciencemag.org/ ., The domestication ...
(Date:8/29/2014)... German . ... cycle on Earth and in biological wastewater treatment plants. ... on nitrite as their source of energy. An international ... at the University of Vienna, has now shown that ... of energy. The oxidation of hydrogen with oxygen enables ...
(Date:8/29/2014)... twist them, fold them: modern materials that are light, ... as artificial skin or electronic paper. , Making such ... but a new way of working with copper nanowires ... , Previous success in the field of ultra-lightweight ... precious gold and silver nanowires. , By turning ...
Breaking Biology News(10 mins):New research reveals how wild rabbits were genetically transformed into tame rabbits 2New research reveals how wild rabbits were genetically transformed into tame rabbits 3Hydrogen powers important nitrogen-transforming bacteria 2Hydrogen powers important nitrogen-transforming bacteria 3Copper shines as flexible conductor 2
... years after Columbus, voyage, burning of New World forests and ... decimation of native populations by European diseases. But a new ... fires because both preceded Columbus in many regions worldwide. ... linked previously to the population collapse. We,re saying no, there ...
... Li, MD, PhD, Brigham and Women,s Hospital (BWH) Transplantation Research ... called CD4+ T cells, mature into various subsets of adult ... particular cell surface molecule, known as OX40, is a powerful ... of interleukin-9 (IL-9) (and therefore called TH9 cells) in vitro; ...
... hemiplegia of childhood (AHC) is a very rare disorder ... body and then the other in devastating bouts that ... walking are common among patients with this diagnosis. ... that mutations in one gene cause the disease in ...
Cached Biology News:When the world burned less 2When the world burned less 3When the world burned less 4When the world burned less 5Cell receptor has proclivity for T helper 9 cells, airway inflammation 2Gene discovery set to help with mysterious paralysis of childhood 2Gene discovery set to help with mysterious paralysis of childhood 3
(Date:8/28/2014)... (PRWEB) August 28, 2014 Sterlitech is ... polymeric membranes to its stable of products . ... molecular weight cut-offs and include membrane filters with surface ... increase in customer demand for our membrane process testing ... variety of flat sheet membranes,” explains Sterlitech President Mark ...
(Date:8/28/2014)... (PRWEB) August 28, 2014 A ... around the world is available from Strategic Consulting, ... companies. “ Industrial Microbiology Market Review, Fourth Edition: ... Market ” (IMMR—4) tracks and compares microbiology test ... North America, Europe and Asia, and forecasts future ...
(Date:8/28/2014)... York, NY (PRWEB) August 28, 2014 ... renewed its long term partnership with PTI Inspection ... provide clients with state of the art leak testing ... of the art instruments currently available. As part of ... new High Voltage Leak Detection Instrument developed ...
(Date:8/27/2014)... (PRWEB) August 27, 2014 In ... through Lawrence Livermore National Security LLC ... develop and deliver a state-of-the-art laser system for ... (ELI Beamlines), under construction in the Czech Republic. ... the laser system, called the " High repetition-rate ...
Breaking Biology Technology:Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 3Whitehouse Labs Renews Partnership with PTI Inspection Systems 2Whitehouse Labs Renews Partnership with PTI Inspection Systems 3LLNL Synchs up with ELI Beamlines on Timing System 2LLNL Synchs up with ELI Beamlines on Timing System 3
... Jan. 3 Cambrex,Corporation (NYSE: CBM ) ... President and Chief Executive Officer, will make a ... on January 8, 2008 at,9:00 a.m. PST at ... (Logo: http://www.newscom.com/cgi-bin/prnh/20000613/CAMBREXLOGO ), A live ...
... Thoratec,Corporation (Nasdaq: THOR ), a world leader ... it will be participating in the JP,Morgan Healthcare ... president and chief executive officer, will provide an,update ... Standard Time (11:30,a.m., Eastern Standard Time)., The ...
... Calif., Jan. 3 /Xinhua-PRNewswire-FirstCall/ --,Kiwa Bio-Tech Products ... its Fertilizer Products in Dingxing, Hebei on ... large volume distribution,businesses in 7 counties in ... agreements were reached with local dealers to ...
Cached Biology Technology:Kiwa Bio-Tech Products Group Holds a Fertilizer Products Exhibition in Hebei 2Kiwa Bio-Tech Products Group Holds a Fertilizer Products Exhibition in Hebei 3