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REP08531
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REP08531
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Entry Properties
Last modified
8/24/2016 11:38:23 PM
Creation date
11/26/2007 11:54:32 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
Report
Doc Name
HISTORIC RECORD STUDY AREA VEGETATION AND PRECIPITATION CHARACTERIZATION 1997 WEST ELK MINE SOMERSET
Permit Index Doc Type
REVEG MONITORING REPORT
Media Type
D
Archive
No
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For statistical purposes, each cover transect (comprising 50 data points) served as a <br />sample unit. Data points recorded the first vertical "hit" on vegetation (above or below <br />the instrument), bare ground, rock, or litter. Subsequent "hits" on vegetation were also <br />recorded. Cover data were recorded and reported by individual plant species. The first <br />interception was used to calculate total cover values. Additional interceptions were <br />used to calculate relative cover of individual plant species and lifeforms. The <br />quantitative cover data also provided the basis for calculation of species composition. <br />Herbaceous Production <br />Herbaceous production was estimated by the harvest method. One herbaceous <br />production plot was located and randomly oriented at the end of each cover transect. <br />Additional herbaceous quadrats were located randomly as described above. Herbaceous <br />production plots were 0.50 square meters in area. All current year above ground live <br />herbaceous plant biomass was clipped within the 0.50 square meter quadrat. Perennial <br />grasses, annual grasses, and annual, biennial, and perennial fortis were clipped and <br />bagged to represent total herbaceous production. Succulents, suffrutescent, and woody <br />plants were not sampled. Production material was air dried until weights varied by no <br />more than O. lg. Results are reported as grams per square meter. <br />Woody Plant Census <br />Woody plants do not form a significant component of the study azea vegetation. <br />Sampling woody plant density through the use of parametric sampling techniques would <br />be inappropriate given the low numbers of woody plants. to order to quantify and <br />describe the woody plant component within the study area, a complete census of the <br />woody plants present within the study area vegetation community was undertaken. The -- <br />census counted all woody plants within the study area by species. <br />Species Compositiou <br />Species composition information was derived from quantitative vegetation cover data. <br />Relative cover information provided a basis for evaluation of the importance of each <br />encountered plant species and lifeform. <br />Sample Numbers/Sample Adequacy <br />Sample adequacy was calculated for vegetation cover and herbaceous production. For <br />the purposes of this study, vegetation cover and herbaceous production sampling was <br />undertaken to sample adequacy. A minimum of fifteen samples per parameter were <br />taken. Parameters were tested at the 9040 confidence level. Calculated minimum <br />sample numbers and standard deviations are reported as an indication of variability of <br />the sampled parameters. Comparisons between sample mean parameter values assume <br />that the sample mean value accurately represents the population mean in all cases. The <br />following formula was used for sample adequacy calculations: <br />-4- <br />
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