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GENERAL46084
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Last modified
8/24/2016 8:17:03 PM
Creation date
11/23/2007 2:19:28 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981024
IBM Index Class Name
General Documents
Doc Date
6/21/1999
Doc Name
Vegetation Sampling protocol
From
GREYSTONE
To
DMG
Permit Index Doc Type
VEGETATION
Media Type
D
Archive
No
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Kent Gorham <br />June 18, 1999 <br />Page 3 <br />(1) <br />Percent Total Vegetative Cover =Number of Hits on Vegetation <br />Total Number of Points <br />Fifteen transects will be initially evaluated for success comparison and statistical evaluation <br />purposes. The Snedecor-Cochran sample adequacy formula (Equation 2) will be utilized to <br />determine that an adequate number of transects are sampled. <br />(Z) <br />t2 sZ <br />Nmin <br />(d X)z <br />Where: <br />N = required number of transects or quadrats <br />d = desired level of precision (0.1 the level of precision for estimate of <br />the mean to be within 10% of the actual mean) <br />x = sample mean <br />sZ = sample variance <br />t = the a = .10 t-table value for a single tailed t-test with n-1 degrees <br />of freedom <br />Production Sampling <br />Production will be determined by hand clipping 0.5 square meter quadrats. A random number will <br />be selected between the bounds of 0 and 1. This number will be multiplied by 25 to determine <br />where the quadrat will be placed along the transect tape. The vegetation will be clipped by forb <br />or grass species and separated by annual or perennial life form, with the corresponding "wet" <br />weight recorded. The clipped vegetation will be oven dried and reweighed as a field "dry" weight. <br />The dry weights will be converted to pounds per acre for each respective sampled area. Three <br />production plots will be clipped along each of the fifteen transects, with the plots per transect <br />averaged before being initially evaluated for success comparison and statistical evaluation <br /> <br />
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