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KS | MO | MT | NE | NV |
NM | ND | OK | OR | SD |
TX | UT | WA | WY |
BC | AB |
MEXICO |
Community or Ecosystem | Dominant Species | Fire Return Interval Range (years) |
sagebrush steppe | Artemisia tridentata/Pseudoroegneria spicata | 20-70 [56] |
basin big sagebrush | Artemisia tridentata var. tridentata | 12-43 [66] |
Wyoming big sagebrush | Artemisia tridentata var. wyomingensis | 10-70 (40*) [87,94] |
saltbush-greasewood | Atriplex confertifolia-Sarcobatus vermiculatus | < 35 to < 100 |
desert grasslands | Bouteloua eriopoda and/or Pleuraphis mutica | 5-100 |
plains grasslands | Bouteloua spp. | < 35 |
blue grama-needle-and-thread grass-western wheatgrass | Bouteloua gracilis-Hesperostipa comata-Pascopyrum smithii | < 35 |
blue grama-buffalo grass | Bouteloua gracilis-Buchloe dactyloides | < 35 |
grama-galleta steppe | Bouteloua gracilis-Pleuraphis jamesii | < 35 to < 100 |
blue grama-tobosa prairie | Bouteloua gracilis-Pleuraphis mutica | < 35 to < 100 |
cheatgrass | Bromus tectorum | < 10 |
creosotebush | Larrea tridentata | < 35 to < 100 |
Ceniza shrub | Larrea tridentata-Leucophyllum frutescens-Prosopis glandulosa | < 35 |
wheatgrass plains grasslands | Pascopyrum smithii | < 35 |
pinyon-juniper | Pinus-Juniperus spp. | < 35 [56] |
DISCUSSION AND QUALIFICATION OF FIRE EFFECT:
No entry
PLANT RESPONSE TO FIRE:
The recovery time of alkali sacaton following fire has been reported as 2 to 4 years. In an Arizona study alkali sacaton
basal area recovered
in 2 postfire years, although only 54% of plant height was recovered in that time. The effect of fires in the 1st postfire growing season was to decrease
height and basal area of alkali sacaton while stimulating growth of other grasses and forbs. Summer fires had a more
pronounced effect on alkali sacaton than winter fires [11,93,94].
DISCUSSION AND QUALIFICATION OF PLANT RESPONSE:
No entry
FIRE MANAGEMENT CONSIDERATIONS:
In a 1982 summary of fire in the southern desert grasslands and shrublands, Wright and Bailey [94]
conclude that if rangelands are in good condition, fire can be used as an effective management tool
to reduce some shrubs and small trees during wet weather cycles. Fire probably has the greatest value for managing tobosa, big sacaton, alkali sacaton, and mixed grama ranges [13,94].
According to Wright and Bailey [94], sacaton communities are similar in
density, coarseness, and structure to tobosagrass; Payson and others [58]
indicate that prescribed fire causes low mortality, improves palatability, and
increases biomass of tobosagrass.
CO MT UT WY Cattle Good Good Good Good Domestic sheep Good Good Fair Good Horses Good Good Fair Good Pronghorn ---- Poor Fair Poor Elk ---- Poor Fair Fair Mule deer ---- Poor Fair Poor White-tailed deer ---- ---- Poor ---- Small mammals ---- ---- Good Fair Small nongame birds ---- ---- Fair Fair Upland game birds ---- ---- Fair Fair Waterfowl ---- ---- Fair PoorNUTRITIONAL VALUE:
UT WY Pronghorn Poor Fair Elk Poor Poor Mule deer Poor Poor White-tailed deer Poor ---- Small mammals Good Good Small nongame birds Fair Good Upland game birds Fair Fair Waterfowl Fair PoorVALUE FOR REHABILITATION OF DISTURBED SITES:
Plant when soil moisture is at least 14% or higher
Plant when probabilities for weekly precipitation are greatest and soil temperatures will be near 86 degrees Fahrenheit (30 oC)
Use large seeds at least 1 year old
Saturate the planting site just prior to planting
Cover seed with about 1/2 inch (13 mm) of mulch to keep conditions moist and dark
If rainwater does not deposit at least 6 mm of rain within the first 5 days, rewater to bring the soil to saturation
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