The Ecological Register: Ursus americanus

Ursus americanus (carnivore)

Mass: 115 kg based on Bartareau et al. 2012

Diet: browser-insectivore based on Eagle and Pelton 1983; herbivore based on Amstrup and Beecham 1976

Abundance: 0.01 to 62.48% (median 2.06%)

Latitudinal range: 23.9° to 63.5°

Habitats: (34), boreal forest/taiga (5), desert/xeric shrubland (1), montane grassland (1), temperate broadleaf/mixed forest (8), temperate coniferous forest (1), temperate savanna (1), tropical/subtropical coniferous forest (2)

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Found in 53 samples

Canada: Lindsay, Canadian National Railway (spring), Canadian National Railway (summer), Canadian National Railway (fall), Keffer (Midden 57, screened), Keffer (Midden 57, floated), DjPp-8 (level B), Grassy Bay, Irving-Johnston, Caverne de la Mine (upper infill), Winefred Lake, EMEND site (retention level 100%, replicate 1), EMEND site (retention level 100%, replicate 2), EMEND site (retention level 100%, replicate 3), Algar

Mexico: Ajos, Madera West, Schroeder Site (Structure 1), El Zurdo

United States: Salt Pond Mountain, Boulder County, North Fork of the Cache la Poudre River, North of the Michigamme Reservoir, Zesch Cave, Vess Cave, Papago Springs Cave, Haystack Cave (lower levels), Harrodsburg Crevice, Ripplemead, Bat Cave, Angel Site (Subdivision W10D), Fort Center Mound A, McLelland, Croley-Evans, Harris Creek, Garden Creek Mound No. 2, Hobson Site, Hale Farm, Dead Indian Creek, Prison Farm, Pine Hill, Otter Creek No. 2 (Zone 3), Cole Gravel Pit, Sachsen Cave Shelter, Robinson Cave, Schulze Cave (layer C1), Schulze Cave (layer C2), Natural Chimneys, Flagg Swamp Rockshelter (Archaic), Black Rapids Training Area (triggered detections), Bull Neck Swamp Research Forest, Smithsonian Conservation Biology Institute (logs, feature), West of US 287

Size measurements:

♀ body mass	89240 kg	N = 39	Bartareau et al. 2012
♂ body mass	126300 kg	N = 100	Bartareau et al. 2012