Animalia > Chordata > Mammalia > Rodentia > Sciuridae > Tamias > Tamias merriami

Tamias merriami (Merriam's chipmunk)

Wikipedia Abstract

Merriam's chipmunk (Neotamias merriami) is a species of rodent in the family Sciuridae. It is found in central and southern California. in the United States and a small area in northern Baja California, Mexico.
View Wikipedia Record: Tamias merriami


EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 7.23
EDGE Score: 2.11


Adult Weight [1]  75 grams
Diet [2]  Frugivore, Granivore
Diet - Fruit [2]  50 %
Diet - Seeds [2]  50 %
Forages - Ground [2]  100 %
Gestation [1]  32 days
Litter Size [1]  4
Maximum Longevity [1]  5 years


Name Countries Ecozone Biome Species Report Climate Land
California Central Valley grasslands United States Nearctic Temperate Grasslands, Savannas, and Shrublands
California coastal sage and chaparral Mexico, United States Nearctic Mediterranean Forests, Woodlands, and Scrub
California interior chaparral and woodlands United States Nearctic Mediterranean Forests, Woodlands, and Scrub
California montane chaparral and woodlands United States Nearctic Mediterranean Forests, Woodlands, and Scrub
Mojave desert United States Nearctic Deserts and Xeric Shrublands
Northern California coastal forests United States Nearctic Temperate Coniferous Forests
Sierra Nevada forests United States Nearctic Temperate Coniferous Forests

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
California Coast Ranges Biosphere Reserve 153447 California, United States  
Carrizo Plain Preserve Nature Conservancy - Preserve Ia 7550 California, United States  
Golden Gate National Recreation Area V 26135 California, United States
Hamilton Preserve Nature Conservancy - Preserve Ia 52 California, United States  
Landels-Hill Big Creek Preserve Nature Conservancy - Preserve Ia 45 California, United States
Lassen Volcanic National Park II 29388 California, United States
Mojave and Colorado Deserts Biosphere Reserve 5901 California, United States  
Philip L. Boyd Deep Canyon Desert Research Center 6101 California, United States
Pinnacles National Monument V 2869 California, United States
San Joaquin Biosphere Reserve 4527 California, United States  
Sequoia and Kings Canyon Biosphere Reserve II 172261 California, United States
Yosemite National Park II 95209 California, United States

Biodiversity Hotspots

Name Location Endemic Species Website
California Floristic Province Mexico, United States No

Prey / Diet

Endotropis crocea subsp. crocea (redberry buckthorn)[1]
Frangula californica subsp. californica (California buckthorn)[1]
Platanus racemosa (californica sycamore)[1]
Quercus agrifolia (Encina)[1]
Quercus chrysolepis (Live Oak)[1]
Quercus dumosa (Coastal sage scrub oak)[1]
Quercus lobata (Californian White Oak)[1]
Quercus wislizeni (Interior Live Oak)[1]
Rosa californica (California wild rose)[1]
Rubus ursinus (California Blackberry)[1]
Salix laevigata (red willow)[1]
Salix lasiolepis (arroyo willow)[1]
Toxicodendron diversilobum (pacific poisonoak)[1]
Umbellularia californica (California laurel)[1]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Aplodontia rufa californica1
Aplodontia rufa nigra (Point Arena mountain beaver)1
Aplodontia rufa phaea1
Dendragapus obscurus fuliginosus (Sooty Grouse)1
Neotoma fuscipes (dusky-footed woodrat)3
Peromyscus boylii (brush mouse)1
Sciurus griseus (western gray squirrel)1
Spizella atrogularis (Black-chinned Sparrow)1
Sylvilagus audubonii (Desert Cottontail)2
Sylvilagus bachmani (Brush Rabbit)1
Tamias ochrogenys (yellow-cheeked chipmunk)1
Thomomys bottae (Botta's pocket gopher)1
Vireo huttoni (Hutton's Vireo)1


Accipiter cooperii (Cooper's Hawk)[1]
Accipiter striatus (Sharp-shinned Hawk)[1]
Bubo virginianus (Great Horned Owl)[1]
Canis latrans (Coyote)[1]
Crotalus cerberus (viridis)[1]
Crotalus viridis (Prairie rattlesnake)[3]
Lynx rufus (Bobcat)[1]
Mustela frenata (Long-tailed Weasel)[3]
Pituophis melanoleucus (Eastern Pine Snake)[1]
Taxidea taxus (American Badger)[1]
Urocyon cinereoargenteus (Gray Fox)[1]


Parasitized by 
Atyphloceras multidentatus multidentatus[4]
Carteretta carteri[4]
Cediopsylla inaequalis inaequalis[4]
Ceratophyllus ciliatus ciliatus[4]
Dermacentor occidentalis (Net tick)[1]
Euchoplopsyllus glacialis foxi[4]
Eumolpianus fornacis[4]
Hoplopleura arboricola[1]
Hoplopsyllus anomalus (rodent flea)[4]
Ixodes sculptus (Sculptured tick)[1]
Malaraeus telchinus[4]
Odontopsyllus dentatus[4]
Oropsylla montana[4]
Rhadinopsylla fraterna[4]
Rhadinopsylla sectilis sectilis[4]

Range Map

North America;



Attributes / relations provided by
1Tamias merriami, Troy L. Best and Nancy J. Granai, MAMMALIAN SPECIES No. 476, pp. 1-9 (1994)
2Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
3Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
4International Flea Database
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Images provided by Google Image Search
Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access