Navigation Links
Loss of top animal predators has massive ecological effects
Date:7/14/2011

STONY BROOK, NY"Trophic Downgrading of Planet Earth," a review paper that will be published on July 15, 2011, in the journal Science, concludes that the decline of large predators and herbivores in all regions of the world is causing substantial changes to Earth's terrestrial, freshwater, and marine ecosystems. The paper claims that the loss of apex consumers from ecosystems "may be humankind's most pervasive influence on nature." The research was funded primarily by the Institute for Ocean Conservation Science at Stony Brook University with support from The Pew Charitable Trusts. The paper is co-authored by the Institute's executive director, Dr. Ellen K. Pikitch, and the lead author is Dr. James A. Estes, professor of ecology and evolution at the University of California at Santa Cruz.

The review, conducted by an international team of 24 scientists, illuminates the patterns and far-reaching impacts of predation and herbivory on the structure and dynamics of global ecosystems. The researchers relied on both experimental and observational evidence, which provides a strong basis for their conclusions.

"By looking at ecosystems primarily from the bottom up, scientists and resource managers have been focusing on only half of a very complex equation," said Dr. Estes. "These findings demonstrate that top consumers in the food web are enormous influencers of the structure, function, and biodiversity of most natural ecosystems."

Apex consumers include animals such as big cats, wolves, bison, sharks, and great whales, and are typically large, long-lived, and not amenable to laboratory experiments. As a result, the effects of removing them from ecosystems are not easy to document. The team of scientists reviewed an accumulation of theoretical and empirical evidence on how the decline of top predators and herbivores has affected Earth's ecosystems on land, in freshwater, and in the ocean. Their findings suggest that "trophic downgrading
'/>"/>

Contact: Cindy Yeast
cdyeast@earthlink.net
720-542-9455
Stony Brook University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Long-term study shows effect of climate change on animal diversity
2. Researchers find animal with ability to survive climate change
3. Researchers note differences between people and animals on calorie restriction
4. Earliest animal footprints ever found -- discovered in Nevada
5. Details of evolutionary transition from fish to land animals revealed
6. Drug-embedded microparticles bolster heart function in animal studies
7. Swamping bad cells with good in ALS animal models helps sustain breathing
8. Moderate use averts failure of type 2 diabetes drugs in animal model
9. Grapes may aid a bunch of heart risk factors, animal study finds
10. Animal and biological science highlights: San Antonio Fluid Dynamics Conference, Nov. 23-25
11. Discovery of giant roaming deep sea protist provides new perspective on animal evolution
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Loss of top animal predators has massive ecological effects
(Date:10/31/2014)... his team have been studying the behavior of ... Alps for years. They observed that ravens slowly ... and playing. However, they also observed that these ... individual. Although in about 50 % of the ... the two affiliating ravens, intervening can be potentially ...
(Date:10/30/2014)... Mich. – When most animals begin life, cells immediately ... a vital organ. However, mammals, including humans, are special. ... different first choice – to become the protective placenta ... during this critical first step that research from Michigan ... in the current issue of PLOS Genetics ...
(Date:10/30/2014)... Carolina State University researchers have developed a suite of ... dogs and humans, which has applications in everything from ... pets. , "We,ve developed a platform for computer-mediated communication ... new avenues for interpreting dogs, behavioral signals and sending ... David Roberts, an assistant professor of computer science at ...
Breaking Biology News(10 mins):Identifying the source of stem cells 2New tech aims to improve communication between dogs and humans 2
... 2011) -- Scientists at Weill Cornell Medical College used genetic ... engineered for the study of cleft lip and cleft palate. ... treat the conditions in humans. Cleft lip and cleft ... requiring multiple cycles of surgery, speech therapy and orthodontics. To ...
... zoological journal ZooKeys published by Pensoft ... says an analysis dedicated to journal,s jubilee 150th issue, By ... 10,000 pages and 420 articles (to compare with 4,962 pages ... 2008, ZooKeys published more than 19,000 pages and ...
... has come from the fossil record, but how accurately does that ... "It,s a question that goes back a long way to ... tried to understand what it tells us about the history of ... In fact, the fossil record can tell us a great ...
Cached Biology News:Cleft lip corrected genetically in mouse model 2Cleft lip corrected genetically in mouse model 3Growth through innovations and open access: The journal ZooKeys on point for digital taxonomy 2Ancient environment led to Earth's current marine biodiversity 2
(Date:10/30/2014)... Diego, CA (PRWEB) October 30, 2014 ... announced today that they have manually curated public data ... and non profit customers. the data is now ... manually curates and unifies public and internal data sources ... value and knowledge out of the data that becomes ...
(Date:10/30/2014)... Spartan Bioscience announced today that Health ... . It detects CYP2C19 genetic mutations in less than ... Spartan RX CYP2C19 System is the first near-patient DNA ... Canada. Due to the system’s ease of use, Health ... healthcare professionals such as doctors, nurses, pharmacists, and laboratory ...
(Date:10/30/2014)... (PRWEB) October 30, 2014 Avure Technologies celebrates ... 525L, the newest member of its fleet of high volume ... reaching an anniversary as we return to PackExpo this year, ... ago in Las Vegas,” said Jeff Williams, CEO at Avure. ... and we’re pleased to be meeting the challenges of market ...
(Date:10/30/2014)... Oct. 30, 2014 Isis Pharmaceuticals, Inc. (NASDAQ: ... that management will present a company overview at the Nomura ... ET in Boston, MA. ... the "Investors & Media" section of the Company,s website, ... website within 48 hours and will be archived for a ...
Breaking Biology Technology:Rancho BioSciences Manually Curated TCGA Data Sets Available 2Health Canada approves first near-patient DNA test for personalized medicine 2Health Canada approves first near-patient DNA test for personalized medicine 3In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 2In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 3Isis Pharmaceuticals to Present at the Nomura Biotechnology Conference 2
... INCOM Inc., the world,s leading commercial manufacturer of ... acquired Paradigm Optics, a manufacturer of polymer fiber optic ... intellectual property related to the manufacture and sale of ... capital equipment.  Paradigm Optics President & CEO Mr. David ...
... , part of Vocollect, a business unit of ... Pine Grove Nursing Center has implemented AccuNurse® voice ... care to patients and residents, while preparing for 2014 healthcare ... Grove CNAs to observe and accurately document care needs while ...
... Diagnostics, Inc. (OTC.PK: CEMI and OTC.QB: CEMI), which ... announced that Lawrence A. Siebert, President and Chief Executive ... Francisco at approximately 5:30 pm Eastern Time (2:30 pm ... The conference will be simultaneously webcast over the ...
Cached Biology Technology:INCOM Inc. Announces Acquisition of Paradigm Optics 2Pine Grove Nursing Center Uses AccuNurse Interactive Care to Improve Care and Service Delivery 2Pine Grove Nursing Center Uses AccuNurse Interactive Care to Improve Care and Service Delivery 3Chembio Presenting at Biotech Conference 2Chembio Presenting at Biotech Conference 3