Accepted taxon: Ursus americanus
| Taxon: | Ursus americanus |
|---|---|
| Rank: | Species |
| Higher Classification: | CARNIVORA | CANIFORMIA | Ursidae | Ursus |
| Reference: | Wilson, Don E., and DeeAnn M. Reeder, eds. Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed), JHU Press, 2005. |
Fig.1 - Ternary plot of the proximate analysis for the Ursus americanus diet.
CF (Crude Fibre) 15, ASH (Ash contents) 8, NFE (Nitrogen-Free-Extract) 48, CP (Crude Protein) 22, EE (Ether Extract) 8.
See details for the calculations in Lintulaakso, K., Tatti, N. and Žliobaitė, I., 2022. Quantifying mammalian diets.
Mammalian Biology, pp.1-15.
[DOI]
| TSN Complete name | Part | Ratio a. | Reference(s) |
|---|---|---|---|
| Magnoliopsida | SHOOT | 16.67 | Nowak,R. … |
| Magnoliopsida | STEM | 16.67 | Nowak,R. … |
| Magnoliopsida | FRUIT | 15.96 | Damuth, J… |
| Magnoliopsida | SEED | 11.55 | Damuth, J… |
| Magnoliopsida | ROOT | 9.21 | Damuth, J… |
| Insecta | WHOLE | 6.93 | Damuth, J… |
| Poaceae | STEM | 3.90 | Grzimek,B… |
| Mammalia | WHOLE | 3.75 | Damuth, J… |
| Magnoliopsida | EXUDATES | 2.45 | Grzimek,B… |
| Fagaceae | SEED | 2.02 | Nowak,R. … |
| Vertebrata | EGGS | 1.90 | Damuth, J… |
| Insecta | LARVAE | 1.85 | Reid,F., … |
| Rodentia | WHOLE | 1.61 | Grzimek,B… |
| Salmonidae | WHOLE | 1.50 | Grzimek,B… |
| Formicidae | WHOLE | 1.28 | Grzimek,B… |
| Vertebrata | CARRION | 1.09 | Grzimek,B… |
| Osteichthyes | WHOLE | 1.01 | Nowak,R. … |
| Artiodactyla | WHOLE | 0.64 | Grzimek,B… |
a. Standardized values. See details for the calculations in Lintulaakso, K., Tatti, N. and Žliobaitė, I., 2022. Quantifying mammalian diets. Mammalian Biology, pp.1-15. [DOI]
| Trait | Selected Value | All Value(s) | Reference(s) |
|---|---|---|---|
| Locomotion: Eisenberg 1981 | Scansonal | Scansonal | – John L. Gittleman, 1985, 'Carnivore body size: Ecological and taxonomic correlates', Oecologia, vol. 67, no. 4, pp. 540-554 |
| Dietary category: Eisenberg 1981 | Frugivore-Herbivore | Frugivore-Herbivore, Frugivore-omnivore | – John L. Gittleman, 1985, 'Carnivore body size: Ecological and taxonomic correlates', Oecologia, vol. 67, no. 4, pp. 540-554, Juhn, M., Balisi, M., Doughty, E., Friscia, A., Howenstine, A., Jacquemetton, C., Marcot, J., Nugen, S., Van Valkenburgh, B. 2024. Cenozoic climate change and the evolution of North American mammalian predator ecomorphology. Paleobiology. None(None), pp.1-10. Available at: 10.1017/pab.2024.27. |
| Dietary category: Miljutin 2009 | Frugivore | Frugivore | – John L. Gittleman, 1985, 'Carnivore body size: Ecological and taxonomic correlates', Oecologia, vol. 67, no. 4, pp. 540-554, Juhn, M., Balisi, M., Doughty, E., Friscia, A., Howenstine, A., Jacquemetton, C., Marcot, J., Nugen, S., Van Valkenburgh, B. 2024. Cenozoic climate change and the evolution of North American mammalian predator ecomorphology. Paleobiology. None(None), pp.1-10. Available at: 10.1017/pab.2024.27. |
| Temporal habits | diurnal | diurnal | – John L. Gittleman, 1985, 'Carnivore body size: Ecological and taxonomic correlates', Oecologia, vol. 67, no. 4, pp. 540-554 |
| Measurement | Location | Unit | n Total | n Unknown | n Female | n Male | Min | Mean | Max | SD | Reference(s) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Body Mass (BM) | nan | g | 14 | 14 | - | - | - | 109,751.94 | - | - | Engelman,… |
| Body Mass (BM) | nan | g | - | - | - | - | 39,000 | - | 409,000 | - | Freudenth… |
| Body Mass (BM) | nan | g | - | - | - | - | - | 110,500 | - | - | Juhn, M.,… |
| Head-Body Length (HBL) | nan | mm | 10 | 10 | - | - | - | 1,676.1 | - | - | Engelman,… |
| Occipital condyle width (OCW) | nan | mm | 14 | 14 | - | - | - | 54.79 | - | - | Engelman,… |
| Measurement | Location | Unit | n Total | n Unknown | n Female | n Male | Min | Mean | Max | SD | Reference(s) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| OPD (l) | n/a | 3 | 3 | - | - | - | 117 | - | - | Evans, Al… | |
| OPD (u) | n/a | 3 | 3 | - | - | - | 58 | - | - | Evans, Al… | |
| brainmass | nan | g | - | - | - | - | - | 248 | - | - | Engelman,… |
| skull_length | nan | mm | - | - | - | - | - | 263 | - | - | Engelman,… |
| BMR (kJ/h) | nan | kJ/h | - | - | - | - | - | 307 | - | - | McNab, B.… |
| femur circumference | nan | mm | - | - | - | - | - | 84 | - | - | Nelson, A… |
| humerus circumference | nan | mm | - | - | - | - | - | 92 | - | - | Nelson, A… |
| relative blade length (RBL) | nan | unitless | - | - | - | - | - | 1 | - | - | Juhn, M.S… |
b. other Measurements. Source Measurements which are not listed on or mapped with the Standard Traits..
Citation for this page: [The MammalBase community 2026. / CC BY 4.0. http://doi.org/10.5281/zenodo.7462864 Ursus americanus , Accessed 16th April 2026 at https://mammalbase.net/me/14646]