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About
Yellowstone Foodweb for Poa glauca rupicola (timberline bluegrass)
Yellowstone
Canis lupus
(
Wolf
)
Ursus americanus
(
black bear
)
Ursus arctos
(
Grizzly Bear
)
Cervus elaphus
(
wapiti or elk
)
Poa glauca rupicola
(timberline bluegrass)
Ecosystem provided by National Geographic Magazine - May 2016 - Yellowstone - The Carnivore Comeback