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Gulf Prairies (Lower Coast) Ecoregion
Wildlife Management Plan for Jim Wells County, Texas
Jim Wells County spans the boundary between the Southern Texas Plains and Western Gulf Coastal Plain, with 81 documented wildlife species.
Intelligence Snapshot
Regulatory Complexity
Jim Wells County has elevated conservation considerations that affect wildlife management planning. The 6 federally listed species documented here mean that brush management, water development, and habitat modification must be designed with ESA compliance in mind. A properly calibrated plan accounts for these constraints. A generic plan does not.
Jim Wells County Ecological Profile
Jim Wells County's 865 square miles contain 11,950 documented oil and gas wells alongside coastal grasslands, marshes, and tidal flats, creating a landscape where industrial infrastructure and ecological management coexist at close range. The coastal prairie, once one of the most extensive grassland ecosystems in North America, has been reduced to scattered remnants by rice farming, cattle ranching, and industrial development. With 5 Groundwater Conservation Districts regulating water resources, well permitting and production limits are significant factors in water-dependent management practices.
Wildlife management on the Gulf Prairies emphasizes wetland management, coastal prairie restoration, and moist soil management for waterfowl and shorebirds. Properties with access to water control structures can manage shallow impoundments on seasonal schedules: drawing down in spring to stimulate smartweed, barnyard grass, and other moist soil plants, then reflooding in autumn to create feeding habitat for migrating waterfowl. Upland prairie management focuses on prescribed fire at 2 to 3 year intervals to control Chinese tallow, McCartney rose, and other invasive woody species while stimulating gulf muhly, little bluestem, and brownseed paspalum. Grazing management using short-duration, high-intensity rotational systems can mimic the disturbance patterns of historic bison herds and maintain the structural diversity that grassland birds require.
Transitional Ecoregion
Jim Wells County spans the boundary between the Southern Texas Plains and Western Gulf Coastal Plain. Species assemblages, soil types, and appropriate management intensities differ between these regions. A property in the Southern Texas Plains portion of the county will require different practices than one in the Western Gulf Coastal Plain zone.
Soil Conditions
Soils are heavy, poorly drained clays of the Lake Charles, Beaumont, and Edna series, underlain by a shallow water table that creates the seasonal wetland conditions critical for waterfowl and shorebird habitat.
Fire Ecology
Coastal prairie evolved with fire at 1 to 3 year intervals. Prescribed burning is the primary tool for controlling Chinese tallow invasion and maintaining the native grass and forb communities that support Attwater's prairie chicken and other grassland obligate species.
Spans 2 ecoregions: Southern Texas Plains, Western Gulf Coastal Plain
This region is the last stronghold of the Attwater's prairie chicken, one of the most endangered birds in North America, with fewer than 200 individuals surviving in the wild. Mottled duck, a non-migratory species endemic to the Gulf Coast, depends on the mosaic of coastal prairie and freshwater wetlands for nesting and brood-rearing. Wintering waterfowl concentrations in the rice prairies and managed wetlands can exceed a million birds, including pintail, teal, and white-fronted geese. Whooping crane, the tallest North American bird and a federally endangered species, winters at Aransas National Wildlife Refuge and feeds in the surrounding marshes and grain fields.
Jim Wells County Species of Conservation Concern
TPWD records 81 species in Jim Wells County. Birds represent the most documented group at 30 species. The 6 federally listed and 18 state-protected species documented here represent meaningful regulatory considerations for any land management activity. Federally listed species include whooping crane, ocelot, and South Texas ambrosia. Whooping crane: Winters along the Texas coast at Aransas NWR and surrounding marshes.
Primary Management Targets
mottled duck, whooping crane, reddish egret
Listed Species
Winters along the Texas coast at Aransas NWR and surrounding marshes. Grain field management and wetland water levels in coastal counties affect foraging habitat. Disturbance within 1,000 feet of roosting sites is regulated.
Requires dense thornscrub corridors for movement between habitat patches in the lower Rio Grande Valley and coastal counties. Brush retention along wildlife corridors is a conservation priority. Road crossings are a primary mortality source; wildlife underpasses may be required for road projects.
Found on heavy clay soils in South Texas. Habitat loss from agriculture and development are primary threats. Prescribed fire and grazing management benefit this species.
Extremely rare cactus in South Texas. Known from very few sites in Jim Wells and Kleberg counties. Root-plowing and brush clearing in occupied habitat should be avoided.
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.
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.
Winters along the Texas coast at Aransas NWR and surrounding marshes. Grain field management and wetland water levels in coastal counties affect foraging habitat. Disturbance within 1,000 feet of roosting sites is regulated.
Requires dense thornscrub corridors for movement between habitat patches in the lower Rio Grande Valley and coastal counties. Brush retention along wildlife corridors is a conservation priority. Road crossings are a primary mortality source; wildlife underpasses may be required for road projects.
Found on heavy clay soils in South Texas. Habitat loss from agriculture and development are primary threats. Prescribed fire and grazing management benefit this species.
Extremely rare cactus in South Texas. Known from very few sites in Jim Wells and Kleberg counties. Root-plowing and brush clearing in occupied habitat should be avoided.
Depends on harvester ant colonies for food. Fire ant suppression and native grassland restoration directly benefit this species. Listed as state threatened.
Found in South Texas brushlands and western Edwards Plateau. Slow-moving and vulnerable to road mortality and habitat clearing. Translocation may be required before land clearing in occupied habitat.
Source: Texas Parks & Wildlife Department RTEST Database; U.S. Fish & Wildlife Service Critical Habitat Designations
Gulf Prairies (Lower Coast) Wildlife Management Standards
Management in Jim Wells County is driven by water. Seasonal wetland drawdown and reflooding schedules, Chinese tallow control, and coastal prairie fire are the primary management activities. Under 34 TAC Section 9.2002, the Gulf Prairies (Lower Coast) ecoregion requires 15 to 20 minimum acres, 10% brush management coverage, and semi-annual wildlife census documentation. Primary targets are mottled duck, whooping crane, and reddish egret. Wetland water level management and coastal prairie fire are the dominant management tools.
These are the intensity thresholds your plan must meet for the Gulf Prairies (Lower Coast) 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
Water Resources
5 Groundwater Conservation Districts regulate water resources in the county, with permitting requirements for new wells and production limits that affect agricultural and wildlife management water sources.
Infrastructure
Jim Wells County has substantial oil and gas infrastructure: 11,950 documented wells across 18 categories and 3,957 pipeline segments recorded by the Railroad Commission. 32 orphan wells are on the Railroad Commission's plugging priority list.
The Central Flyway crosses Jim Wells County's 865 square miles every year, carrying millions of migratory birds. The management plan accounts for that or it does not.
Build your Jim Wells County wildlife management plan.
2 ecoregions. 81 documented species. Jim Wells County's ecological complexity means the plan has to be specific to your property's landscape position. Calibrated to Gulf Prairies (Lower Coast) standards.
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