Navigation Links
Human rules may determine environmental 'tipping points'
Date:4/15/2011

A new paper appearing in the Proceedings of the National Academy of Sciences (PNAS) suggests that people, governments, and institutions that shape the way people interact may be just as important for determining environmental conditions as the environmental processes themselves.

"Tipping points," qualitative changes in an ecosystem that often result in reduced ecosystem health and are difficult and costly to reverse increasingly concern environmental scientists.

The prevailing assumption among scientists has been that tipping points are fixed values. However, a unique research collaboration involving a team of biologists and economists that included University of Notre Dame ecologist David Lodge, Michigan State University economist Richard Horan, Arizona State University economist Eli Fenichel and Bethel College biologist Kevin Drury, indicates that these tipping points are not fixed in human-impacted ecological systems and depend, instead, on human responses to a changing environment.

The authors point out many instances of tipping points that resulted in catastrophic changes in ecosystems, such as climate change, collapsed freshwater and marine fisheries and changes wrought by invasive species. For example, the invasive species sea lamprey changed the Great Lakes from an environment productive of lake trout and whitefish to a collapsed fishery. If not for the $17 million spent annually by the United States and Canada to control them, sea lamprey would continue to devastate Great Lakes fisheries.

In the research described in the PNAS paper, the researchers studied invasive rusty crayfish, which have transformed many Michigan and Wisconsin lakes from luxuriant underwater forests inhabited by many smaller animals that supported sport fish to clear-cut forests with diminished production of sport fish. This outcome occurred despite the fact that there are many fish like smallmouth bass that readily consume crayfish. <
'/>"/>

Contact: Richard Horan
horan@msu.edu
517-355-1301
University of Notre Dame
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Swiss Institute of Bioinformatics celebrates 10th birthday by presenting major gifts to human health
2. Scientists identify novel inhibitor of human microRNA
3. During exercise, the human brain shifts into high gear on alternative energy
4. Complete Genomics launches, becomes worlds first large-scale human genome sequencing company
5. Research shows Brazilian acai berry antioxidants absorbed by human body
6. Study: Bird diversity lessens human exposure to West Nile Virus
7. Human Microbiome Project awards funds for technology development, data analysis and ethical research
8. TheVisualMD.com launches new animated 3-D views of human body in action
9. Gene with probable role in human susceptibility to pulmonary tuberculosis identified
10. The American Society of Human Genetics hosts 58th Annual Meeting in Philadelphia
11. Genetic based human diseases are an ancient evolutionary legacy
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/18/2014)... , Nov. 18, 2014   EyeLock Inc. ... solutions, and MorphoTrust USA (Safran), a ... today announced a strategic partnership to offer comprehensive ... vehicle administration (MVA), airport screening and financial services ... solutions, MorphoTrust serves consumers through a nationwide network ...
(Date:11/11/2014)... , Nov. 11, 2014  Forensicon, Inc., a ... firm, is pleased to announce the promotion of ... Director of Digital Forensics. In Schiff,s new role as ... the team of digital forensics examiners and provide leadership ... Photo - http://photos.prnewswire.com/prnh/20141110/157719 ...
(Date:11/7/2014)... Calif. , Nov. 7, 2014  In conjunction with ... Police Departments, The Community Foundation of the Verdugos ... DNA JUSTICE PROJECT," a $250,000 initiative to keep ... initial phase. In its first six months of existence, the ... needed evidence support for local law enforcement. "Because ...
Breaking Biology News(10 mins):EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2
... A paleontological team that includes scientists from the American ... and Case Western Reserve University has described two ancient ... a discovery that substantiates what might be the earliest ... near a chain of volcanoes about 32.5 million years ...
... new and powerful class of antioxidants could one day be ... class of antioxidants called synthetic triterpenoids blocked development of Parkinson,s ... handful of days, said Dr. Bobby Thomas, neuroscientist at the ... corresponding author of the study in the journal Antioxidants ...
... July 23, 2012 Scientists have embarked on a 3-week ... Mexico to understand how surface ocean currents near the site ... oil/dispersants, like those from the 2010 spill. In other words, ... get there. This experiment is an essential step in understanding ...
Cached Biology News:New species of ancient rodents hint at what could be world's oldest grasslands 2New species of ancient rodents hint at what could be world's oldest grasslands 3Powerful class of antioxidants may be potent Parkinson's treatment 2The largest research expedition of its kind near the site of Deepwater Horizon incident 2The largest research expedition of its kind near the site of Deepwater Horizon incident 3
(Date:11/27/2014)... Calcivis, a medical devices ... decay, today announces that it has completed a ... Imaging System. The Calcivis Caries Activity ... consumable combination designed to transform the assessment and ... a unique, proprietary bioluminescence approach combined with a ...
(Date:11/26/2014)... 2014 The North America Thermal ... market for detailed analysis of the growth trends ... reach $616.3 million by 2018, growing at a ... Browse through the TOC of the North America ... idea of the in-depth analysis and industry segmentation ...
(Date:11/26/2014)... (PRWEB) November 26, 2014 On January, ... the Baltimore and Washington D.C. science community to the ... The event, sponsored by the Protein Society, will take ... University Center, Room 312. Through discussion, presentations and ... structural importance of proteins, their role in the industry ...
(Date:11/26/2014)... CA (PRWEB) November 25, 2014 Silicon ... joins forces with RPM Alliance , provider of ... pharmaceutical companies. With the latest addition to its CRO ... free validated EDC system to India. , “We ... a robust and customizable EDC platform which is both ...
Breaking Biology Technology:Calcivis Completes Clinical Study of Novel Caries Activity Imaging System 2Calcivis Completes Clinical Study of Novel Caries Activity Imaging System 3The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 2The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 3RPM Alliance Joins Clinovo’s CRO Partnership Program, Further Strengthening Its Presence in Southern California and India 2
... Mass., March 11 Boston Scientific,Corporation (NYSE: BSX ... Care Conference, which is being held March 18 - ... will make a 25-minute,presentation on Tuesday, March 18, beginning ... and Chief Financial Officer will,join Mr. LaViolette in a ...
... Advisory Board Programs Exemplify, Why Halogen ... Market, OTTAWA, March 11 /PRNewswire/ - Halogen ... and talent management software,announced today that its customers ... and challenges and play a critical role in ...
... TORONTO and MONTREAL, March 11 /PRNewswire/ - GreenField ... gasification and,catalysis technology company, have signed a Binding ... on a commercial scale., "We are excited ... a,commercial reality in Canada," said Bob Gallant, President ...
Cached Biology Technology:Halogen Customers Shape Industry-Leading Employee Performance and Talent Management Solution 2Halogen Customers Shape Industry-Leading Employee Performance and Talent Management Solution 3GreenField Ethanol and Enerkem Announce Plans to Make Cellulosic Ethanol a Commercial Reality 2GreenField Ethanol and Enerkem Announce Plans to Make Cellulosic Ethanol a Commercial Reality 3
...
Human PDGF R beta MAb (Clone # PR7212)...
Zebrafish Ephrin-B2 Biotinylated Affinity Purified PAb...
Collected from 8-12 week old New Zealand or Californian rabbits. Aseptically collected and processed to minimize hemolytic activity. Pricing: $60/unit for 1 - 10 units...
Biology Products: