e360 digest


11 Nov 2010: Wolves and Sharks Create
Similar ‘Ecology of Fear’ in Ecosystems

A ripple-effect “ecology of fear” created by wolves and sharks in their respective ecosystems may be more similar than previously understood, according to a new study. After comparing the relationship
Gray Wolf
U.S. Fish & Wildlife
between wolves and elk in Yellowstone National Park in the U.S. and tiger sharks and dugongs in Australia’s Shark Bay, researchers found that each of the predator species alters the behavior of their prey in ways that have ecological significance that goes beyond the species themselves. When wolves are present, elk almost immediately shift their grazing areas to less sensitive habitats, allowing streamside shrubs and aspen trees to recover, scientists from Oregon State University and the University of Washington say in the study, published in the journal Frontiers in Ecology and the Environment. Similarly, dugongs tend to avoid shallow waters when sharks are present, allowing seagrass meadows — and the plants and marine animal species that depend on them — to thrive.


Yale
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
.

SEARCH e360



Donate to Yale Environment 360
Yale Environment 360 Newsletter

CONNECT


ABOUT

About e360
Contact
Submission Guidelines
Reprints

E360 en Español

Universia partnership
Yale Environment 360 articles are now available in Spanish and Portuguese on Universia, the online educational network.
Visit the site.


DEPARTMENTS

Opinion
Reports
Analysis
Interviews
Forums
e360 Digest
Podcasts
Video Reports

TOPICS

Biodiversity
Business & Innovation
Climate
Energy
Forests
Oceans
Policy & Politics
Pollution & Health
Science & Technology
Sustainability
Urbanization
Water

REGIONS

Antarctica and the Arctic
Africa
Asia
Australia
Central & South America
Europe
Middle East
North America

e360 PHOTO GALLERY

“Cuba
Photographer Robert Wintner documents the exquisite beauty and biodiversity of Cuba’s unspoiled coral reefs.
View the gallery.

e360 MOBILE

Mobile
The latest
from Yale
Environment 360
is now available for mobile devices at e360.yale.edu/mobile.

e360 VIDEO

Warriors of Qiugang
The Warriors of Qiugang, a Yale Environment 360 video, chronicles a Chinese village’s fight against a polluting chemical plant. It was nominated for a 2011 Academy Award for Best Documentary Short.
Watch the video.


header image
Top Image: aerial view of Iceland. © Google & TerraMetrics.

e360 SPECIAL REPORT

“Tainted
A three-part series Tainted Harvest looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup.
Read the series.

OF INTEREST



Yale