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Wildlife, Animals, and Plants |
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FIRE EFFECTS
IMMEDIATE FIRE EFFECT ON PLANT:Green needlegrass is top-killed or killed by fire. The number of inflorescences, basal area, and leaf lengths can be decreased by fire [25,36]. Specific effects of fire depend on season of burn, fire intensity, and severity [144]. Whisenant [144] stated that green needlegrass is intolerant of spring burning.
DISCUSSION AND QUALIFICATION OF FIRE EFFECT:No entry
PLANT RESPONSE TO FIRE:Different researchers have observed various effects responses of green needlegrass to burning, depending on season of burning and site characteristics. Green needlegrass has been found to increase following spring burning [80]. Following an April prescribed burn in South Dakota, Forde [40] found a decrease in percent ground cover the year of the fire, but observed rapid increases 2 years following the fire. Whisenant [144] in South Dakota found burning caused a significant decrease in standing green needlegrass, approximately one-third of unburned plots, for at least 3 growing seasons following a fire in April. Schripema [116] found that green needlegrass was decreased by spring burning in South Dakota. Green needlegrass was absent from burned plots for 3 years postfire and was never found in flower following a September fire in North Dakota [33]. Olson [105] found canopy coverage of green needlegrass decreased in the 2nd postburn season following 2 annual burns in North Dakota. Kirsch [81] found green needlegrass to increase with burning in North Dakota. Nimir [103] observed a statistically insignificant decrease in green needlegrass on one burned site in Montana, but not the other.
DISCUSSION AND QUALIFICATION OF PLANT RESPONSE:No entry
FIRE MANAGEMENT CONSIDERATIONS:The effects of fire on green needlegrass vary with season of burn and site characteristics. Higgins [63] found the best response of green needlegrass to fire with March-April (very-early spring) or August-September (late summer) in Northern Mixed Prairie.
Related categories for SPECIES: Nassella viridula | Green Needlegrass |
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