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You are here >1Up Info > Wildlife, Animals, and Plants > Plant Species > Shrub > Species: Rosa acicularis | Prickly Rose
 

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FIRE EFFECTS

SPECIES: Rosa acicularis | Prickly Rose
IMMEDIATE FIRE EFFECT ON PLANT : Fire usually kills aboveground parts of prickly rose. Severe fires which remove organic soil horizons kill shallow rhizomes or portions of rhizomes, leaving alive only those rhizome portions growing in mineral soil. DISCUSSION AND QUALIFICATION OF FIRE EFFECT : NO-ENTRY PLANT RESPONSE TO FIRE : Prickly rose sprouts following fire and may also establish seedlings [1,25,77,85,90]. Rowe [66] has observed that depth of sprouting buds is site-specific in sprouting species and may vary in different regions of the continent. Prickly rose recovery from fire appears to vary by region and site. In Alaska, prickly rose rhizomes grow in mineral soil, and the plant is found on nearly all recently burned sites [10,45]. The severity and timing of the fire and site factors appear to be very important to prickly rose response in western Canada and the Rocky Mountains [30,65,67]. In northeastern broadleaf forests, prickly rose is not as fire tolerant as other associated shrubs. It recovers well after light fires but is infrequent following more severe fires [93]. DISCUSSION AND QUALIFICATION OF PLANT RESPONSE : Alaska and northwest Canada: In Alaskan black and white spruce stands, prickly rose's habit of rooting in mineral soil allows it to survive fires that consume all or most of the deep organic layers and to flourish in early succession [11,25]. Following early summer wildfires in black spruce stands ranging in age from 50 to 125 years and in aspen woodlands, prickly rose responded rapidly and vigorously, greatly increasing its cover over prefire values [82,91]. After fires which do not burn to mineral soil in Alaskan spruce forests, it sprouts but may not be as vigorous [80]. In Alaska's taiga, repeated fires at lower elevations may lead to meadows dominated by bluejoint reedgrass (Calamagrostis canadensis), sedges (Carex spp.), and prickly rose [77]. In northern British Columbia, frequent fires or repeated burning can convert white spruce and aspen forests on valley slopes to shrub communities which include prickly rose as a dominant [54]. Western Canada and Rocky Mountain States: In the sub-boreal spruce zone of British Columbia prickly rose increases in abundance following fire on moist sites but decreases on drier sites [30]. Prickly rose was a dominant in some British Columbia and Alberta subalpine fir and Engelmann spruce stands 8 years after fire [7]. It resprouted promptly on moist sites in a dry Douglas-fir stand in Montana following a wildfire [15]. On Montana rough fescue grassland, prickly rose did not regain its prefire dominance until the second year following a fall fire [67]. In spring following a fall grassland fire in Saskatchewan, substantial patches of prickly rose showed no sign of sprouting and were apparently killed [65]. Annual spring burning over a 24-year period severely reduced the frequency and cover of prickly rose in Alberta aspen parkland [4]. Great Lakes Region: In the Great Lakes region, prickly rose is less frequent on severely burned sites than on lightly burned sites although its degree of dominance is similar for burned and unburned sites [1]. Results from a study of both spring and summer wildfires in Minnesota mixed conifer-hardwood stands showed reduced frequency for prickly rose. Most postfire plants were sprouts, but some plants apparently started from seed [43]. However, in another Minnesota study the biomass of individual prickly rose plants increased after a mid-May wildfire, nearly doubling from the second to the fifth postfire sampling date [53]. Thirty-three years after another Minnesota wildfire, prickly rose is still of some importance in mixed stands containing aspen, birch and jack pine, although it appears to be a remnant of early postfire succession [52]. In Ontario jack pine stands, prickly rose is a stable species that is present before and after prescribed fires [50]. FIRE MANAGEMENT CONSIDERATIONS : Clearcutting followed by slashburning was sufficiently severe to sharply reduce prickly rose survivors in Alaskan white spruce stands. Since at least some rhizomes in mineral soil survived, it was able to recover, although more slowly than following clearcutting alone [21]. Prickly rose sprouts after fire in black spruce, but it is not competitive with black spruce [12].

Related categories for Species: Rosa acicularis | Prickly Rose

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Content on this web site is provided for informational purposes only. We accept no responsibility for any loss, injury or inconvenience sustained by any person resulting from information published on this site. We encourage you to verify any critical information with the relevant authorities.

Information Courtesy: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. Fire Effects Information System

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