Navigation Links
Humans give prey the edge in food web
Date:3/3/2011

A new paper by University of Calgary researchers, published today in PLoS ONE, demonstrates the edge given to prey in the "space race" by human activity.

The research was conducted by two University of Calgary students, a University of Calgary Post-Doctoral Fellow and two University of Calgary professors from the Faculty of Environmental Design, Department of Geomatics in the Schulich School of Engineering and the Faculty of Veterinary Medicine. The research looked at how predator-prey interactions and use of space were influenced by human activity.

The team deployed 43 digital camera traps at randomly selected locations along roads and trails within a research area on the eastern slopes of the Rocky Mountains in southwest Alberta from April to November of 2008. Large predator animals in the study area consisted of wolves, black bears, grizzly bears and cougars. While the large herbivore species monitored were moose, elk, white-tailed deer, mule deer and cattle.

They found that humans and prey species co-occurred together more often than humans and predators at camera sites, and that predators and prey were less likely to be in the same area if there was heavy human traffic. Their results showed that prey were three times more abundant on roads and trails used by more than 32 humans a day, but predators were less abundant on roads and trails used by more than 18 humans a day.

"The research shows that humans might displace large mammalian predators," says Tyler Muhly, corresponding author of the paper and a PhD graduate from the Faculty of Environmental Design at the University of Calgary (currently with Alberta Innovates Technology Futures). "This provides a positive indirect effect on large mammalian prey species that are less sensitive to humans."

The research suggests that limiting human use of roads and trails in wildlife areas to less than 18 people a day might reduce the effects on the large mammalian food web, but a growing human population means that the effects on wildlife food webs will likely increase.


'/>"/>

Contact: Brooke Hunter
blhunter@ucalgary.ca
403-220-4756
University of Calgary
Source:Eurekalert

Related biology news :

1. Missing sugar molecule raises diabetes risk in humans
2. Chemical compounds in trees can fight deadly staph infections in humans
3. Earliest humans not so different from us, research suggests
4. Simple marine worms distantly related to humans
5. IU study: Humans critical ability to throw long distances aided by an illusion
6. UF study of lice DNA shows humans first wore clothes 170,000 years ago
7. Humans helped vultures colonize the Canary Islands
8. The brains of Neanderthals and modern humans developed differently
9. Exposure of humans to cosmetic UV filters is widespread
10. Modern humans emerged far earlier than previously thought
11. From bees to coral reefs: How humans impact partnerships in the natural world
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/6/2017)... March 6, 2017 Mintigo , ... today announced Predictive Sales Coach TM , its ... sales intelligence into Salesforce. This unique AI application ... sales organizations with deep knowledge of their customers ... intelligent engagement. Predictive Sales Coach extends Mintigo,s existing ...
(Date:3/2/2017)... 2, 2017 Who risk to be deprived ... the full report: https://www.reportbuyer.com/product/4313699/ WILL APPLE ... FIELD? Fingerprint sensors using capacitive technology represent a ... vendor Idex forecasts an increase of 360% of the ... of the fingerprint sensor market between 2014 and 2017 ...
(Date:2/28/2017)... --  Acuant , a leading provider of data capture ... new and core technologies building upon the acquisition of ... desktop Acuant FRM TM facial recognition and match ... manual review of identity documents by accredited professionals. ... most accurate capture software to streamline workflows by securely ...
Breaking Biology News(10 mins):
(Date:3/28/2017)... 28, 2017 Biostage, Inc. (Nasdaq: ... bioengineered organ implants to treat cancers and other life-threatening ... that Jim McGorry, CEO of Biostage, will ... panel at the MassBio 2017 Annual Meeting ... in Cambrige, Massachussetts. The 3D Printing and BioEngineering ...
(Date:3/28/2017)... March 28, 2017 Focus ... unpredictable sector due to the scientifically intensive operations ... medical, agricultural, environmental, and industrial. In today,s pre-market research, ... Pharmaceuticals Inc. (NASDAQ: PTLA), OvaScience Inc. (NASDAQ: OVAS), ... Inc. (NASDAQ: OCUL ). Learn more ...
(Date:3/28/2017)... (PRWEB) , ... March 28, 2017 , ... ... in the development of a new orally administered treatment for Alzheimer’s disease (AD), ... CEO John Didsbury states, “As we seek to uniquely treat the metabolic dysfunctions ...
(Date:3/27/2017)... (PRWEB) , ... March 27, 2017 , ... ... to accelerating the fight against cancer, autoimmune disease and more through a single-cell ... single-cell metabolomics and proteomics analysis platform developed in the laboratory of Dr. ...
Breaking Biology Technology: