Comp_wolf_prop_rule_FR. Natureandscience. [Olaus_J._Murie,_Mark_Elbroch]_Peterson_Field_Guid(BookZa.org) Creel et al. RElative influence of human harvest, carnivores and weather on female elk survival across Western NA 2013 Brodie etal JAE elk survival. Trophic Cascades Across Diverse Plant Ecosystems | Learn Science at Scitable. The Wolf's Tooth: Keystone Predators, Trophic Cascades, and Biodiversity, Eisenberg. Living With Wolves. Rethinking predators: Legend of the wolf. Jim and Jamie Dutcher/National Geographic Creative The return of grey wolves to the western United States has sparked debate over their role in structuring ecosystems. In 2008, Kristin Marshall was driving through Yellowstone National Park in Wyoming. Marshall, a graduate student at the time, had come to the park to study willow shrubs — specifically, how much they were being eaten by elk. She pulled to the side of the road and was preparing to hike to one of her study plots when she ran into two sisters from the Midwest, who were touring the park.
The tourists gushed: “We watched all about the willows on this nature documentary. Instead, she said: “The story is a probably a little more complicated than what you saw on the nature documentary.” On television and in scientific journals, the story of how carnivores influence ecosystems has seized imaginations. Listen Emma Marris describes how wolves reinstated in North America are forcing ecologists to rethink ecosystems Predators on top.