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

" the ecological consequences of losing large apex consumers from nature causes extensive cascading effects in ecosystems worldwide, especially when exacerbated by factors such as land use practices, climate changes, habitat loss, and pollution.

"Our review of existing studies clearly shows that a top-down cascading effect in natural systems is both powerful and widespread," said Dr. Estes. "There is an urgent need for interdisciplinary research to forecast how a continued loss of top level consumers will further harm the planet's ecosystems."

This paper documents some of the negative effects that the widespread loss of these animals has already had on Earth's biosphere, climate, biodiversity, and vegetation:

  • The reduction of lions and leopards from areas of sub-Saharan Africa caused the baboon population to swell. This unexpectedly increased transmission of intestinal parasites from baboons to humans as the primates were forced to forage closer to human settlements.
  • As large ungulates recovered from a devastating rinderpest epidemic in the Serengeti in Africa, herbivory increased, and the frequency of wildfire declined in that region. Wildfire frequency increased following the late Pleistocene/early Holocene decline of megaherbivores in Australia and the northeastern United States.
  • Industrial whaling in the 20th century resulted in the loss of large numbers of plankton-consuming great whales, which are now known to sequester carbon into the deep sea through deposition of feces. The result has been the transfer of approximately 105 million tons of carbon into the atmosphere that would have been absorbed by whales, contributing to climate change.

"We must assume going forward that significant changes to the ecosystem are occurring when large predators and herbivores are removed from the top of the food web, and, thus, that efforts to manage and conserve nature must include these animals," said Dr. Piki
'/>"/>

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:11/18/2014)... 17, 2014 The Parenteral Drug Association (PDA) today ... will speak and at least seven more will participate in ... Omni Shoreham Hotel in Washington D.C. , ... have significant support from the regulatory agencies in ... in our effort to help advance the use of ...
(Date:11/10/2014)... detergent pods began appearing on U.S. store shelves in ... numbers ever since. The small packets can be tossed ... out a liquid or powder. The convenience, though, has ... study from researchers at Nationwide Children,s Hospital found that ... reports of 17,230 children younger than 6 years of ...
(Date:11/6/2014)... deaths occur because of metastasis, yet progress in ... slow. , "It,s been particularly challenging to design ... research fellow in systems biology at Harvard Medical ... until after they,ve already metastasized." , Gujral and ... should help researchers better understand how metastasis begins. ...
Breaking Biology News(10 mins):FDA's Janet Woodcock, EMA's Emer Cooke Headline PDA Quality Metrics Conference 2Study finds laundry detergent pods, serious poisoning risk for children 2Migration negation 2Migration negation 3
... medical woes ranging from cancer to bird flu will ... The newly-patented device will offer small and medium-sized researchers ... It will also allow them a chance, at last, ... analyze drugs and view the characteristics of protein. ...
... a gene known to increase the risk of Alzheimer,s ... Oregon Health & Science University study has found. ... that 7- to 10-year-olds with a member of a ... and neuroprotection display reduced spatial learning and memory, associated ...
... include: continental deformation and the San Andreas fault; ... between Britain and America; environmental stress and the ... Canada,s Mackenzie River basin as a CO2 source ... the absence of active volcanism; and geologic evolution ...
Cached Biology News:Council to honor NJIT SmartPin 2Children with gene show reduced cognitive function 2November GEOLOGY and GSA TODAY Media Highlights 2November GEOLOGY and GSA TODAY Media Highlights 3November GEOLOGY and GSA TODAY Media Highlights 4November GEOLOGY and GSA TODAY Media Highlights 5November GEOLOGY and GSA TODAY Media Highlights 6November GEOLOGY and GSA TODAY Media Highlights 7November GEOLOGY and GSA TODAY Media Highlights 8November GEOLOGY and GSA TODAY Media Highlights 9November GEOLOGY and GSA TODAY Media Highlights 10
(Date:11/26/2014)... November 26, 2014 On January, 14, ... Baltimore and Washington D.C. science community to the UMBC ... event, sponsored by the Protein Society, will take place ... Center, Room 312. Through discussion, presentations and workshops, ... importance of proteins, their role in the industry and ...
(Date:11/26/2014)... NJ (PRWEB) November 25, 2014 ... has officially joined the Morris County (New Jersey) ... which is a leading business organization in the ... opportunity to further engage some key clients in ... operations in the geographic area. Membership enables Whitehouse ...
(Date:11/26/2014)... Continuing its award-winning streak, Nerium International, the leader ... for outstanding creative achievement by its marketing and communication ... organization’s top honor, in the Branding category for its ... of this year. The event showcased top speakers and ... awarded a Gold MarCom Award in the Special Events ...
(Date:11/26/2014)... November 25, 2014 Miles Holder, formerly ... the Graphel Carbon Products team as Sales/Marketing Manager. Mr. ... and customer service for the graphite industry. , “We ... our team,” stated Dave Trinkley, VP of Market and ... range of experience in the graphite industry, along with ...
Breaking Biology Technology:Whitehouse Laboratories Joins Morris County Chamber of Commerce 2Whitehouse Laboratories Joins Morris County Chamber of Commerce 3Nerium International™ Wins One Platinum, Two Gold MarCom Awards 2Miles Holder Joins Graphel Corporation as Sales/Marketing Manager 2
... required regulatory approvals for the $2.3 billion acquisition of ... divest of two divisions of the company they are ... manufacturer plans to integrate Instrumentarium it into its ... CEO, Dow Wilson.. , ,The final required ...
... to open a new state-of-art healthcare facility in October, ... latest in digital imaging technology from technology vendor Emageon. ... and distribution of digital medical images across its integrated ... in 1984 is a nationally recognized leader in efforts ...
... Internet connection? , ,MADISON, WI - McDonalds ... connections in five Milwaukee locations as part of a ... restaurants in the San Francisco Bay Area, Metropolitan New ... McDonald's Wireless Internet service. , ,Customers can purchase an ...
Cached Biology Technology:Aurora Selects New Imaging Technology 2Wisconsin McDonalds Go Wireless 2