Navigation Links
Return of top predators is key to ecological future
Date:4/23/2010

CORVALLIS, Ore. Sufficient advances have been made about the importance of top predators in ecosystem function that it's time to move from discussing the issue to acting upon it, a conservation biologist from Oregon State University suggests in a new book.

In "The Wolf's Tooth: Trophic Cascades, Keystone Predators and Biodiversity," just published by Island Press, Cristina Eisenberg outlines the many research findings in recent decades about "trophic cascades," or the string of problems that can be created when keystone predators ranging from wolves to sharks or even spiders are removed from an ecosystem, allowing other species to disproportionately flourish and cause havoc.

In particular, Eisenberg said, more has been learned about the significance of top predators on terrestrial systems, since their role in marine ecosystems was already more advanced. Scientists have now come to understand how wolves, cougars, bears and other leading carnivorous predators, which humans largely eliminated by the early 20th century, served a critical role in ecosystem function.

"The ecological concept of the 1990s was biodiversity, and that's important," said Eisenberg, who is the Boone and Crockett Fellow and a doctoral student in the OSU College of Forestry. "But in the next generation we want the concept of trophic cascades to have that same general awareness, because it's important too and essential to maintaining biodiversity. And we already know enough that it's time to start using these concepts to help ecosystems recover, not just in national parks or wilderness areas but everywhere."

These concepts have gained the most public awareness, Eisenberg said, with the return of wolves to Yellowstone National Park. Wolves have helped to control the overgrazing done by elk, both by reducing their populations and also changing their behavior in what has been identified as "the ecology of fear." As a result, young aspen and willows are be
'/>"/>

Contact: Cristina Eisenberg
cristina.eisenberg@oregonstate.edu
406-270-5153
Oregon State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Aware, Inc. Announces Richard Moberg to Return as CFO
2. Unfavorable ocean conditions likely cause of low 2007 salmon returns along West Coast
3. A switch that controls whether cells pass point of no return
4. Atlantic tuna return thousands of miles to birthplace to spawn
5. Scientists gather to protect global food security from return of devastating wheat fungus
6. Science returns to the Capitol Hill spotlight at March 24 exhibition
7. Tennessee foresters helping to return chestnuts to American forests
8. Proposed mission would return sample from asteroid time capsule
9. Science returns to Capitol Hill spotlight at April 14 exhibition
10. Hidden interactions between predators and prey: evolution causes cryptic dynamics in ecology
11. Researchers view swimming tactics of tiny aquatic predators
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/20/2015)... , Mar. 19, 2015 Research and Markets ... "Hand Geometry - Global Strategic Business Report" report ... markets for Hand Geometry in US$ Thousands. The report provides ... , Japan , Europe ... , and Rest of World. Annual estimates ...
(Date:3/19/2015)... , March 19, 2015  NXT-ID, Inc. (NASDAQ: ... company focused on the growing mobile commerce market, announces its ... a news clip that aired this week on ... . In a segment "The Next Great Thing", ... ,a new way to pay, and ,a really big breakthrough ...
(Date:3/17/2015)... March 17, 2015 Emotient, the leader ... today announced general availability of Emotient Analytics ... the analysis of facial expressions. The system analyzes ... content, products and services. It delivers audience response ... sentiment - as derived from facial evidence of ...
Breaking Biology News(10 mins):Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 2Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 3Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 4NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 2NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 3New Emotient Web Service Measures Audience Response Using On-Demand Facial Expression Analysis 2New Emotient Web Service Measures Audience Response Using On-Demand Facial Expression Analysis 3New Emotient Web Service Measures Audience Response Using On-Demand Facial Expression Analysis 4
... NT APRIL 2010 High in the Mackenzie Mountains, ... being revealed as warming temperatures melt patches of ice that ... Tom Andrews, an archaeologist with the Prince of Wales Northern ... Polar Year Ice Patch Study, is amazed at the implements ...
... April 26, 2010 Energy in, energy out, it,s the ... more than two thirds of Americans classified as overweight or ... Journal of Nutrition Education and Behavior examines how ... loss programs. Researchers at the University of Kentucky and ...
... 26 BIO-key International, Inc. (OTC Bulletin Board: BKYI), a leader ... (OK) Sheriff,s Office successful deployment of an FBI-compliant advanced authentication solution for ... authentication. , , , ... http://www.newscom.com/cgi-bin/prnh/20050509/BIOKEYLOGO ) , , , ...
Cached Biology News:Ancient artifacts reveals as northern ice patches melt 2What's motivation got to do with weight loss? 2BIO-key(R) Delivers FBI-Compliant 2 Factor Authentication Solution for First Responders 2BIO-key(R) Delivers FBI-Compliant 2 Factor Authentication Solution for First Responders 3BIO-key(R) Delivers FBI-Compliant 2 Factor Authentication Solution for First Responders 4
(Date:4/23/2015)... 2015 Glemser Technologies ... EMC® Enterprise Content Division (ECD) Certified Solution Partner ... Documentum® for Life Sciences Solution Suite . The ... capabilities to provide life sciences companies of all ... The EMC Documentum Solution Suite offers four modules: ...
(Date:4/23/2015)... , April 23, 2015 /PRNewswire/ - Crystal Research Associates, ... Informational Overview ® (EIO) on Aeterna Zentaris Inc. ... is available on Crystal Research Associates, website at ... Zentaris, website at www.aezsinc.com . Aeterna ... specialty biopharmaceutical company in oncology, endocrinology, and women,s health. ...
(Date:4/22/2015)... , April 22, 2015  Sangamo BioSciences, Inc. ... 2015 financial results and accomplishments. For the ... consolidated net loss of $5.3 million, or $0.08 per ... or $0.12 per share, for the same period in ... cash, cash equivalents, marketable securities and interest receivable of ...
(Date:4/22/2015)... April 22, 2015 Steep Hill, the ... today that it has opened an investment round ... and expansion.  The common stock investment round will ... a law intended to encourage funding of small ... 506(c), small businesses largely relied on friends and ...
Breaking Biology Technology:Glemser Earns Accreditation for Life Sciences Solution Suite 2Crystal Research Associates, LLC Issues Executive Informational Overview (EIO) on Aeterna Zentaris Inc. 2Crystal Research Associates, LLC Issues Executive Informational Overview (EIO) on Aeterna Zentaris Inc. 3Sangamo BioSciences Reports First Quarter 2015 Financial Results 2Sangamo BioSciences Reports First Quarter 2015 Financial Results 3Sangamo BioSciences Reports First Quarter 2015 Financial Results 4Sangamo BioSciences Reports First Quarter 2015 Financial Results 5Sangamo BioSciences Reports First Quarter 2015 Financial Results 6Sangamo BioSciences Reports First Quarter 2015 Financial Results 7Sangamo BioSciences Reports First Quarter 2015 Financial Results 8Steep Hill Launches $5M Limited Stock Offering 2Steep Hill Launches $5M Limited Stock Offering 3
... Agreement Enables Spherix to Pursue All Pharmaceutical and Health-Oriented ... June 23 Spherix Incorporated (Nasdaq: SPEX ... a provider of technical and regulatory consulting services to ... it has terminated the 1996 license agreement pursuant to ...
... SAO PAULO, June 23 What does sugarcane have ... successful,30-year experience with sugarcane as a feedstock for ethanol. In ... replace a fossil fuel with,renewable energy has saved some 600 ... years for six billion trees to achieve the same,results. , ...
... , Continuing Supplies Will Be Used For NDA and ... Type 2 Diabetes , , BETHESDA, Md., June ... an innovator in biotechnology for diabetes therapy, and a ... supplement, biotechnology and pharmaceutical companies, today announced that it ...
Cached Biology Technology:Spherix Announces Termination of Arla License Agreement 2Spherix Announces Termination of Arla License Agreement 3Spherix Announces Termination of Arla License Agreement 4Sugarcane as a Key Element Against Global Warming to be Highlighted at Green Week in Brussels 2Sugarcane as a Key Element Against Global Warming to be Highlighted at Green Week in Brussels 3Sugarcane as a Key Element Against Global Warming to be Highlighted at Green Week in Brussels 4Spherix Announces Full-Scale Production of Pharmaceutical Tagatose 2Spherix Announces Full-Scale Production of Pharmaceutical Tagatose 3Spherix Announces Full-Scale Production of Pharmaceutical Tagatose 4
ID clarifier: With ethidium bromide (50 μg/ml)...
... Propidium Iodide (PI) is a fluorescent ... double-stranded nucleic acids. As a nuclear ... to dark red in color. The ... green or blue fluorochromes such as FITC, ...
... were cultured in DMEM and harvested at the ... keep the antigens in their native forms, cells ... arrayed on a 12-well (5 mm) adhesive coated ... enhance cellular attachment and to minimize background staining. ...
...
Biology Products: