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REP43337
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REP43337
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Last modified
8/25/2016 12:45:29 AM
Creation date
11/27/2007 9:52:42 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981018
IBM Index Class Name
Report
Doc Date
5/1/1988
Doc Name
MORMON GAP REVEGETATION PROJECT -DRAFT
Permit Index Doc Type
REVEG MONITORING REPORT
Media Type
D
Archive
No
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1984--In t•tay and October 1984, qualitative data was collected on seedling <br />emergence (survival) and weed competition. Intensive sanrpliny for density <br />was begun in the fall of 1984, but not completed due to budget constraints. <br />1985--Qualitative data on density vigor, flowering, weed competition and <br />overall treatment success was collected in the spring. A follow-up <br />evaluation to quantify the information and identify plant species was <br />planned for the fall, but cancelled as plant species were not identifiable <br />due to vegetation consumption resulting from a severe grasshopper <br />infestation. <br />1986 and 1987--P1onito ring was accomplished using a 5-foot by 5-foot frame <br />per plot, which was centered in each plot. Each perennial species <br />encountered was counted and given a vigor rating of 1 to 4, where 4 was <br />the most vigorous. For data analysis, the vigor rating was multiplied by <br />the number of plants of each species to obtain a composite plant value <br />present for comparisons between treatments. Weeds, consisting of <br />cheatgrass and blue mustard, were rated using Uaubenmire cover class <br />ratings of 1 through 6, where 6 was ttie most abundant (1=0-5%, 2=6-25%, <br />3=26-50%, 4=51-75%, 5=76-95%, 6=96-100%). <br />During the 1986 and 1987 evaluations, some of the species were difficult <br />to distinguish from each other. The evaluations were completed in the <br />spring while the plants were small and only a few seed heads existed. In <br />seed mix A, 'Soda r' streambank wheatgrass and 'Secar' bluebunch wheatgrass <br />were, at times, difficult to distinguish. In seed mix B, 'Arriba' western <br />wheatgrass and 'Critana' thickspike wheatgrass were also difficult to <br />distinguish. In 1986, these two species were lumped while in 19fi7 the <br />species were separated. In seed mix C, 'Siberian' wheatgrass and 'Nordan' <br />crested wheatgrass were hard to differentiate when the plants were small. <br />Another observation was the influence of growth form (single stem verses <br />bunches or clumps) on species abundance. It was felt that closely spaced <br />individuals counted one year may grow together and be tallied as single <br />plants in future evaluations. During this evaluation, single clumps or <br />bunches were hard to count as to number of plants. Solid rows of mature <br />plants were also a problem to separate as to plant numbers. <br />RESULTS <br />Single Species Plots <br />The most promising species on the site were 'Eptiriem' crested wheatgrass, <br />'Siberian' wheatgrass, Russian wildrye, 'Sodar' s);'reambank wheatgrass, <br />'Secar' bluebunch wheatgrass, and 'Critana' thickspike ~•~heatgrass. Other <br />species .that were not as successful are listed in Table 4. <br />Seed hlixture Plots <br />Data Used in the Analyses <br />1985 Plots--The data analyzed were density multiplied by vigor. <br />
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