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Post Oak Savannah Ecoregion
Wildlife Management Plan for Red River County, Texas
Red River County sits at the convergence of 3 Texas ecoregions, with 77 documented wildlife species.
Intelligence Snapshot
Regulatory Complexity
Red River County has elevated conservation considerations that affect wildlife management planning. The 5 federally listed species documented here mean that brush management, water development, and habitat modification must be designed with ESA compliance in mind. The county spans 3 ecoregions. A plan written for the wrong landscape position could prescribe inappropriate intensity standards or target the wrong species assemblage. A properly calibrated plan accounts for these constraints. A generic plan does not.
Red River County Ecological Profile
Red River County covers 1,044 square miles of the Post Oak Savannah, a substantial section of open post oak woodlands with native grass understory. The region has been significantly altered by decades of grazing, fire suppression, and conversion to improved pasture, but intact remnants retain high ecological value. The intersection of 3 ecoregions creates a convergence zone where species from multiple regions overlap. This ecological complexity means no single management template applies countywide.
Wildlife management in the Post Oak Savannah focuses on restoring the open, park-like woodland structure that historically characterized the region. Eastern red cedar removal through mechanical cutting and prescribed fire is the primary management action, followed by restoration of native grass and forb understory beneath retained post oak canopy. Riparian corridors along the sandy creeks of the region provide critical travel corridors for wildlife and should be protected from intensive grazing. Food plots of native warm-season grasses supplemented with iron clay cowpeas and grain sorghum provide supplemental nutrition for white-tailed deer and wild turkey during stress periods.
Transitional Ecoregion
Red River County intersects 3 distinct ecoregions: East Central Texas Plains, South Central Plains, and Texas Blackland Prairies. This is not a minor detail. A plan calibrated to the East Central Texas Plains would prescribe the wrong intensity standards, the wrong target species, and the wrong management timeline for a property in the Texas Blackland Prairies zone. Property-specific ecoregion classification is the first step in any credible plan.
Soil Conditions
Soils are predominantly deep, sandy loams of the Padina, Silstid, and Demona series, with scattered areas of heavy clay in bottomlands. The sandy upland soils are drought-prone but support excellent native grass production when properly managed.
Fire Ecology
The Post Oak Savannah evolved with fire at 2 to 5 year intervals. Prescribed burning is essential for maintaining the open woodland structure and controlling the eastern red cedar invasion that has dramatically altered the region over the past century.
Spans 3 ecoregions: East Central Texas Plains, South Central Plains, Texas Blackland Prairies
White-tailed deer, eastern wild turkey, and northern bobwhite are the primary management targets. The region provides important habitat for neotropical migratory songbirds, including painted bunting, summer tanager, and yellow-billed cuckoo, that nest in the oak woodland canopy. Texas horned lizard persists in areas with sandy soils and active harvester ant colonies. Eastern bluebird benefits from nest box programs in areas where natural cavity trees have been removed.
Red River County Species of Conservation Concern
TPWD records 77 species in Red River County. Birds represent the most documented group at 24 species. The 5 federally listed and 12 state-protected species documented here represent meaningful regulatory considerations for any land management activity. Federally listed species include American burying beetle and Ouachita rock pocketbook. American burying beetle: Largest North American carrion beetle.
Primary Management Targets
white-tailed deer, bobwhite quail, eastern bluebird
Listed Species
Largest North American carrion beetle. Historically widespread, now found in limited areas. Soil disturbance and habitat fragmentation during the active season (June through September) may require consultation in occupied range.
Freshwater mussel found in East Texas rivers. Sensitive to sedimentation, channel modification, and water quality degradation.
Inhabits dense emergent marsh vegetation. Extremely secretive and declining. Wetland drainage, mowing of marsh vegetation during nesting season, and altered hydrology are primary threats. Marsh management must maintain dense low vegetation.
Nests on bare sand and shell flats along the Gulf Coast. Coastal properties must avoid disturbance to nesting areas during breeding season (March through August). Vehicle traffic on beaches in occupied habitat is restricted.
Western distinct population segment is threatened. Requires large patches of mature riparian woodland (cottonwood, willow) with dense understory. Clearing riparian corridors wider than 300 feet may trigger consultation in designated critical habitat.
Inhabits dense emergent marsh vegetation. Extremely secretive and declining. Wetland drainage, mowing of marsh vegetation during nesting season, and altered hydrology are primary threats. Marsh management must maintain dense low vegetation.
Nests on bare sand and gravel bars along rivers and reservoirs. Disturbance during nesting season (May through August) must be avoided. Water level management at reservoirs affects nesting success.
Nests on bare sand and shell flats along the Gulf Coast. Coastal properties must avoid disturbance to nesting areas during breeding season (March through August). Vehicle traffic on beaches in occupied habitat is restricted.
Found in large river systems of East Texas. Dam operations and river flow management affect spawning habitat and migration corridors.
Depends on harvester ant colonies for food. Fire ant suppression and native grassland restoration directly benefit this species. Listed as state threatened.
Source: Texas Parks & Wildlife Department RTEST Database; U.S. Fish & Wildlife Service Critical Habitat Designations
Post Oak Savannah Wildlife Management Standards
Management in Red River County means restoring the open, park-like post oak woodland that fire historically maintained. Cedar removal and native grass restoration beneath retained oaks are the primary actions. Because the county spans 3 ecoregions, the applicable intensity standards depend on where the property sits. For the Post Oak Savannah portion, TPWD requires 15 to 20 minimum acres, 20% brush management, and annual census documentation (34 TAC Section 9.2002). Primary targets are white-tailed deer, bobwhite quail, and eastern bluebird. Practice recommendations should reflect each property's specific landscape position within the county.
These are the intensity thresholds your plan must meet for the Post Oak Savannah ecoregion. Your county appraisal district will verify compliance against these minimums. A plan that does not address them risks denial of your wildlife management valuation. For a complete overview of the seven management pillars, see the management pillars guide.
This is a hard minimum. The appraisal district will verify that your plan prescribes brush management on at least this proportion of your acreage annually.
Food plots must provide nutritional supplementation for target species. The minimum size and density are set by ecoregion to reflect carrying capacity.
Feeder placement and protein content are auditable. The aflatoxin threshold (20 ppb) is a compliance requirement, not a suggestion.
Fire ant suppression directly supports native harvester ant populations, the primary food source for Texas horned lizard and other ground-foraging species.
Brown-headed cowbirds are brood parasites that reduce nesting success of songbirds. The minimum applies to properties where cowbird trapping is selected as a management activity.
The burn rotation percentage applies over the full plan period. Properties that cannot burn due to WUI constraints must document the limitation and substitute equivalent mechanical treatment.
Nest box density is based on territory size of target cavity-nesting species. Boxes must be monitored and maintained annually.
Source: TPWD 34 TAC Section 9.2002, Comprehensive Wildlife Management Planning Guidelines
Infrastructure
The Railroad Commission documents 3,232 wells and 207 pipeline segments in Red River County, a moderate industrial presence alongside agricultural land use. 7 orphan wells are on the Railroad Commission's plugging priority list.
77 species in 1044 square miles of post oak woodland. In Red River County, restoring the open savannah structure is the core management objective.
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3 ecoregions. 77 documented species. Red River County's ecological complexity means the plan has to be specific to your property's landscape position. Calibrated to Post Oak Savannah standards.
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