DISTRIBUTION AND OCCURRENCE
SPECIES: Quercus grisea | Gray Oak 



GENERAL DISTRIBUTION : 
Although of limited distribution overall, gray oak is relatively common
in the Trans-Pecos area of Texas [50].  Its range extends from Texas
westward into the mountains of central and southern New Mexico [48].
Gray oak is less common in central and southeastern Arizona [35,60].
The scattered populations of gray oak in northern Mexico extend
southward to Durango and westward from Coahuila to Sonora [27,36,48,57].


ECOSYSTEMS : 
   FRES20  Douglas-fir
   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 : 
     BIBE  CACA  FOBO  GRCA  GUMO


BLM PHYSIOGRAPHIC REGIONS : 
    7  Lower Basin and Range
   12  Colorado Plateau
   13  Rocky Mountain Piedmont
   14  Great Plains


KUCHLER PLANT ASSOCIATIONS : 
   K018  Pine - Douglas-fir forest
   K019  Arizona pine forest 
   K023  Juniper - pinyon woodland
   K031  Oak - juniper woodlands


SAF COVER TYPES : 
    66  Ashe juniper - redberry (Pinchot) juniper
    67  Mohrs (shin) oak
   210  Interior Douglas-fir
   235  Cottonwood - willow
   237  Interior ponderosa pine
   239  Pinyon - juniper
   240  Arizona cypress
   241  Western live oak


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
Gray oak is a dominant or codominant member of the Madrean evergreen oak
woodlands, encinal, and pine-oak (Pinus spp.-Quercus spp.) communities
[5,6,7,25,34,38].  It is a codominant or a common mid-story tree in
juniper (Juniperus spp.)-Mexican pinyon (Pinus cembroides) and
juniper-true pinyon pine (P. edulis)-oak habitat series or community
types [13,28,41,43,49,54,56].  Gray oak is a dominant species in the
juniper-gray oak association [7,24,26,43].  It is the principal tree in
gray oak series and community types [3,41,56].  Gray oak occurs as a
dominant shrub in pinyon-juniper woodlands [30,47,57].  In riparian
habitats, gray oak is an important subdominant species in the bigtooth
maple (Acer grandidentatum)-oak series, in the western soapberry
(Sapindus saponaria) and lanceleaf cottonwood (Populus acuminata)/
sandbar willow (Salix exigua) habitat types, and in mesophytic
communities of New Mexico and Texas [22,40,42,46,56].  It may replace
little walnut (Juglans microcarpa) in wet areas [46].  Gray oak is an
indicator species in the ponderosa pine (Pinus ponderosa) series and
occurs in Douglas-fir (Pseudotsuga menziesii) forests that have a lower
stratum of oaks [2,14,20,34,42,56].  Some of the publications in which
gray oak is listed as a dominant or indicator species are:

(1)  Classification of the forest vegetation on the National Forests of
       Arizona and New Mexico [2]
(2)  Forest and woodland habitat types (plant associations) of Arizona
       south of the Mogollon Rim and southwestern New Mexico [3]
(3)  Forest habitat types in the Apache, Gila, and part of the Cibola
       National Forests, Arizona and New Mexico [20]
(4)  Woodland communities and soils of Fort Bayard, southwestern New
       Mexico [41]
(5)  Plant communities of Texas (Series level): February 1992 [56].

Several woody species associated with gray oak that were not previously
mentioned in the Distribution and Occurrence information include
fendlerbush (Fendlera rupicola), bushy sage (Salvia ramosissima), Texas
madrone (Arbutus texana), Fremont barberry (Berberis fremontii),
Louisiana sagewort (Artemisia ludoviciana), and soaptree yucca (Yucca
elata) [9,12,16,40].

Related categories for Species: Quercus grisea | Gray Oak