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The desert/grassland biome transition zone in central New Mexico provides an important region for testing species differences to changing environmental conditions and various land management practices. Interactions of black grama (Bouteloua eripoda) and blue grama (Bouteloua gracilis) significantly affect the resultant plant community and its influence on system structure and function. Black grama demonstrated higher productivity, especially after wet years, and this species has increased its dominance during the 20-year period since livestock grazing was removed. While black grama can alter the previous pattern of overgrazing and desertification in this transition zone, our experiments demonstrated that it was...
The desert/grassland biome transition zone in central New Mexico provides an important region for testing species differences to changing environmental conditions and various land management practices. Interactions of black grama (Bouteloua eripoda) and blue grama (Bouteloua gracilis) significantly affect the resultant plant community and its influence on system structure and function. Black grama demonstrated higher productivity, especially after wet years, and this species has increased its dominance during the 20-year period since livestock grazing was removed. While black grama can alter the previous pattern of overgrazing and desertification in this transition zone, our experiments demonstrated that it was...