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EFFECTS OF VARYING FIRE REGIMES ON ANNUAL GRASSLANDS IN THE SOUTHERN SIERRA NEVADA OF CALIFORNIA

David J. Parsons and Thomas J. Stohlgren
Madroño
Vol. 36, No. 3 (JULY-SEPTEMBER 1989), pp. 154-168
Stable URL: http://www.jstor.org/stable/41424754
Page Count: 15
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
EFFECTS OF VARYING FIRE REGIMES ON ANNUAL GRASSLANDS IN THE SOUTHERN SIERRA NEVADA OF CALIFORNIA
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Abstract

Effects of up to three successive spring and fall burns on composition and biomass of the predominantly non-native grasslands of the southern Sierra Nevada foothills were evaluated. Fall and spring burning regimes increased the number and biomass of both alien and native forb species. No native grass species became established following the treatments. Thus, whereas the biomass of alien grass species can be reduced by repeated burning, they will be replaced by increases in both alien and native forbs. Changes seen following one or two burns (spring or fall) were not sustained following cessation of burning treatment.

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