villae, which is distributed in the La Sierra Madre Oriental biotic province
of the central mountains of Tamaulipas, Mexico.
Blair (1952) stated that the Tamaulipan biotic province
was one of the most interesting regions in Texas because it was an area in which diverse faunas and floras meet and intermingle.
and Mexico within the Tamaulipan biotic province
. This cactus typically grows in gravelly clay or loam soils, partially shaded by other plants or rocks.
First, for collections of mainland sites of differing area within a biotic province
(defined as a region within which species are added by speciation), z-values should be around 0.15.
In the Lower Rio Grande Valley, red-billed pigeons occur in the falcon woodland biotic community of the Tamaulipan biotic province
(Blair, 1950; Butterwick and Strong, 1976), which is ranked fifth in the top 100 nationally significant fish and wildlife areas (United States Fish and Wildlife Service, 1980).
HCSNA lies within the Edwards Plateau vegetation zone (Gould 1975) and the Balconian biotic province
The study area is in western Starr County, Texas, and is comprised of 18.2 ha of Chihuahuan Thorn Forest biotic community (Jahrsdoerfer & Leslie 1988) within the larger area that Blair (1950) referred to as the Tamaulipan Biotic Province
. Common plants of the study area include blackbrush acacia (Acacia rigidula), cenizo (Leucophyllum frutescens), Euphorbia prostrata, oreja de perro (Tiquilia canescans), and skeleton-leaf goldeneye (Vigiuera stenoloba).
This section of the Rio Grande marks a gradual transition from the Chihuahuan Biotic Province
towards a landscape that becomes increasingly characteristic of the convergence zone between the Balconian and Tamaulipan biotic provinces
described by Blair (1940; 1950) and Dice (1943).
Burroughs Park is located within the Pineywoods area of the Austroriparian biotic province
as defined by Blair (1950).
The Post Oak Savannah is included within the Texan biotic province
, which includes no endemic vertebrates (Blair 1950).
Located within the Kansan Biotic Province
(Blair 1950), Taylor County is bordered by Jones, Shackleford, Callahan, Coleman, Runnels, Nolan and Fisher counties.
Mammals from the southern border of the Kansan Biotic Province