Yellowstone Foodweb for Cervus elaphus (wapiti or elk)

Yellowstone
Canis lupus
(Wolf)
Ursus americanus
(black bear)
Ursus arctos
(Grizzly Bear)
 
Cervus elaphus
(wapiti or elk)
 
Deschampsia cespitosa
(Tufted Hair-grass)
Festuca idahoensis
(Idaho fescue)
Koeleria macrantha
(prairie Junegrass)
Perideridia gairdneri
(Gardner's yampah)
Poa alpina
(alpine bluegrass)
Poa glauca rupicola
(timberline bluegrass)
Poa secunda
(Sandberg bluegrass)
Populus angustifolia
(narrowleaf cottonwood)
Populus tremuloides
(quaking aspen)
Populus trichocarpa
(black cottonwood)
Pseudoroegneria spicata
(Bluebunch wheatgrass)
Salix bebbiana
(Bebb willow)
Salix boothii
(Booth's willow)
Salix exigua
(Sandbar Willow)
Salix geyeriana
(Geyer willow)
Salix lucida lasiandra
(Shining Willow)
Shepherdia canadensis
(russet buffalo-berry)
 
Ecosystem provided by National Geographic Magazine - May 2016 - Yellowstone - The Carnivore Comeback