Abstract
FIG. 3. Growth forms of galleta (above) showing rhizomes about 2 inches below the soil surface and black grama (below) showing stolons and culm bases at the soil surface. The fires caused considerable damage to small juniper trees (70-100%'o kill), but less damage on the larger trees (30-40% kill). Many trees 8 to 10 feet high (6090%), however, were killed when tumbleweeds and other debris under the trees were ignited during the March and June fires. Appreciable kill on larger trees depended on the fire moving in the same direction as the winds that had deposited the tumbleweeds. Where the fires moved against the prevailing wind direction, the tumbleweed was not ignited and kill of larger trees was less than 10%. The height-kill curve for trees under 6 feet high is very close to the height-kill curve for eastern redcedar after a grass fire in Missouri (Martin and Crosby 1955) and could be expected to hold reasonably well for future burns of this type. Similar kill would not be expected, however, for sprouting species of juniper.
Published Version
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