Black willow displaced barnyardgrass along the riverbank, and plains bristlegrass, buffelgrass, Guineagrass and blue panicum became established in open areas.
Seedeaters at Site 2 were observed feeding on southwestern bristlegrass, barnyardgrass and Louisiana cupgrass.
The greater proportion of barnyardgrass in the diet of the white-collared seedeater may reflect the greater abundance of this species over cupgrass and southwestern bristlegrass at Site 2 (Eitniear 1997b).
05) mass of seeds of switchgrass and fewer seeds of plains bristlegrass compared to seeds of guineagrass and Texas millet during the single and multiple-offering experiments (Fig.
Nutritional parameters for our seeds of switchgrass, guineagrass, Texas millet, and plains bristlegrass, respectively, were: protein (%) 16, 18, 13, and 13; fat (%) 15, 14, 15, and 15; acid-detergent fiber (%) 28, 35, 28, and 41; and gross energy (kcal/g) 4.
The transition to the marsh communities is marked by an increase in bushy bluestem (Andropogon glomeratus) and knotroot bristlegrass.
As periods of flooding or intensity of grazing increase, little bluestem decreases and knotroot bristlegrass increases in importance.
Common understory species include Virginia wildrye (Elymus virginicus), trichloris, Texas wintergrass, knotroot bristlegrass, Texas bristlegrass (Setaria texana), brownseed paspalum, rustyseed paspalum (Paspalum langei), little bluestem, eastern gamagrass, old-man's beard (Clematis drummondii), mistflower (Eupatorium odoratum), and catbrier (Smilax bona-nox).
Important understory species include agarito (Berberis trifoliolata), guayacan (Porlieria angustifolia), tasajillo (Opuntia leptocaulis), silver bluestem, little bluestem, trichloris, plains bristlegrass, knotroot bristlegrass, Texas bristlegrass, pink pappusgrass (Pappophorum bicolor), vine-mesquite (Panicum obtusum), curly mesquite (Hilaria belangeri), buffalograss, hairy grama, Texas grama (Bouteloua rigidiseta), purple threeawn (Aristida purpurea), hooded windmillgrass (Chloris cucullata), mistflower, orange zexmenia (Zexmenia hispida), bundleflower (Desmanthus sp.
Important understory species include knotroot bristlegrass, vine-mesquite, longtom, brownseed paspalum, bushy bluestem, silver bluestem, little bluestem, trichloris, and old-man's beard.
The huisache/bushy bluestem-knotroot bristlegrass community is the typical community on those sites where the water table is near the surface.
virginicus), curly mesquite, red threeawn (Aristida longiseta), Texas grama, red grama (Bouteloua trifida), tobosa (Hilaria mutica), plains bristlegrass, pink pappusgrass, and trichloris.