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SPECIES: Quercus oblongifolia | Mexican Blue Oak
GENERAL DISTRIBUTION : Mexican blue oak is found from the Santa Catalina Mountains of southeastern Arizona into the southwestern corner of New Mexico [7,12,22,27,37]. It occurs infrequently in western Texas [35]. Scattered populations are found from Coahuila westward to Baja California Sur, Mexico [27,44,46]. ECOSYSTEMS : FRES21 Ponderosa pine FRES28 Western hardwoods FRES32 Texas savanna FRES33 Southwestern shrubsteppe FRES34 Chaparral - mountain shrub FRES35 Pinyon - juniper STATES : AZ NM TX MEXICO ADMINISTRATIVE UNITS : CORO GUMO SAGU BLM PHYSIOGRAPHIC REGIONS : 7 Lower Basin and Range 12 Colorado Plateau 13 Rocky Mountain Piedmont 14 Great Plains KUCHLER PLANT ASSOCIATIONS : K019 Arizona pine forest K023 Juniper - pinyon woodland K031 Oak - juniper woodlands K032 Transition between K031 and K037 K059 Trans-Pecos shrub savanna SAF COVER TYPES : 66 Ashe juniper - redberry (Pinchot) juniper 235 Cottonwood - willow 237 Interior ponderosa pine 239 Pinyon - juniper 240 Arizona cypress 241 Western live oak 242 Mesquite SRM (RANGELAND) COVER TYPES : NO-ENTRY HABITAT TYPES AND PLANT COMMUNITIES : Mexican blue oak is dominant in pure or mixed stands in lower elevation (less than 5,200 feet [1,585 m]), open, evergreen oak woodlands. In encinal communities Arizona white oak (Quercus arizonica) and Emory oak (Q. emoryi) are codominant with Mexican blue oak and replace it at higher elevations [8,24,28,32,45]. The Mexican blue oak habitat series is transitional into semidesert grasslands. Juniper (Juniperus spp.) and pinyon (Pinus spp.) occur occasionally in communities where Mexican blue oak is dominant [5,24,32]. Mexican blue oak is a climax understory species in the Chihuahua pine (Pinus leiophylla var. chihuahuana) series [24]. In the mesic canyons of the southern Trans-Pecos area of Texas, Mexican blue oak is a characteristic member of the gray oak (Quercus grisea) series [41]. Mexican blue oak is listed as a dominant or indicator species in the following publications: (1) Forest and woodland habitat types (plant associations) of Arizona south of the Mogollon Rim and southwestern New Mexico [3] (2) Preliminary classification for the coniferous forest and woodland series of Arizona and New Mexico [24] (3) Vegetation of the Santa Catalina Mountains: community types and dynamics [33] (4) Riparian forest and scrubland community types of Arizona and New Mexico [40] (5) Plant communites of Texas (Series level) [41]. Species associated with Mexican blue oak that were not previously mentioned in the Distribution and Occurrence information are Arizona rosewood (Vauquelinia californica), shrubby buckwheat (Eriogonum wrightii), catclaw mimosa (Mimosa biuncifera), bullgrass (Muhlenbergia emersleyi), plains lovegrass (Eragrostis intermedia), fendlerbush (Fendlera rupicola), and wolftail (Lycurus pheleoides) [2,3,5,17].

Related categories for Species: Quercus oblongifolia | Mexican Blue Oak

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Information Courtesy: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. Fire Effects Information System

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