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This comprehensive overview examines various grassland ecosystems characterized by their plant composition, including grasses, forbs, and shrubs. The emphasis is on understanding the percentages of grass dominance, alongside the roles of native and invasive species. Key classifications include environments with high grass dominance (>75%), mixtures of grasses and forbs (25-75%), and the presence of low to tall shrubs. The impacts of herbaceous understories and invasive species on these ecosystems are also highlighted, providing insights into plant community dynamics.
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100 = Grass Grasses >75% Herbaceous Shrubs < 50% 101 = Grass-Forb Grasses 25-75% 102 = Forb Grasses <25% 103 = Grass Grasses >75% Low Shrub Shrubs (<1-m tall) >50% All Native Natives >75% 104 = Grass-Forb Grasses 25-75% 105 = Forb Grasses <25% 106 = Grass Grasses >75% 107 = Grass-Forb Grasses 25-75% Tall Shrub Shrubs (>1-m tall) >50% 108 = Forb Grasses <25% 109 = No herbaceous understory Native Natives >50% 110 = Grass Grasses >75% Herbaceous Shrubs < 50% 111 = Grass-Forb Grasses 25-75% 112 = Forb Grasses <25% 113 = Grass Grasses >75% Mostly Native Natives 50-75% Low Shrub Shrubs (<1-m tall) >50% 114 = Grass-Forb Grasses 25-75% 115 = Forb Grasses <25% 116 = Grass Grasses >75% 117 = Grass-Forb Grasses 25-75% Tall Shrub Shrubs (>1-m tall) >50% 118 = Forb Grasses <25% 119 = No herbaceous understory
120 = Grass Grasses >75% Herbaceous Shrubs < 50% 121 = Grass-Forb Grasses 25-75% 122 = Forb Grasses <25% 123 = Grass Grasses >75% Low Shrub Shrubs (<1-m tall) >50% Mostly Invasive Invasives 50-75% 124 = Grass-Forb Grasses 25-75% 125 = Forb Grasses <25% 126 = Grass Grasses >75% 127 = Grass-Forb Grasses 25-75% Tall Shrub Shrubs (>1-m tall) >50% 128 = Forb Grasses <25% 129 = No herbaceous understory Invasive Invasives >50% 130 = Grass Grasses >75% Herbaceous Shrubs < 50% 131 = Grass-Forb Grasses 25-75% 132 = Forb Grasses <25% 133 = Grass Grasses >75% All Invasive Invasives >75% Low Shrub Shrubs (<1-m tall) >50% 134 = Grass-Forb Grasses 25-75% 135 = Forb Grasses <25% 136 = Grass Grasses >75% 137 = Grass-Forb Grasses 25-75% Tall Shrub Shrubs (>1-m tall) >50% 138 = Forb Grasses <25% 900 = Other Rock pile, small mammal mound, etc. 139 = No herbaceous understory