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Percentage of total cover by each species shall be evaluated by visual estimation to <br /> the nearest 1 percent. Cover estimates for each species shall represent absolute cover <br /> (percentage of space within the sample plot), not relative cover (percentage of vegetated <br /> ground only). <br /> In addition to cover estimates, the following data shall, be collected in each of the <br /> sample vernal pools: <br /> o species present in the pool but not counted in any of the sample plots; <br /> o percentage of bare ground; <br /> 0 overall assessment of plant vigor (e.g., poor, fair, good, or very good); <br /> o physical factors that appear to be affecting vegetation growth (e.g., <br /> sedimentation, erosion, disturbance, etc.), and <br /> o photographic record of each vernal pool and sample plot. <br /> The percentage of vegetation cover shall be calculated for native vernal pool species <br /> and non-native species in each sample plot. The arithmetic mean,range,standard deviation, <br /> and standard error shall be calculated for native and non-native species in each set of five <br /> randomized sample plots for each pool. Statistics shall also be calculated for larger groups <br /> of data, including all created berm-type, excavation-type, protected, and unprotected vernal <br /> pools onsite. Cover data from different groups of pools and data from different years shall <br /> be tested for significant differences using a nonparametric t-test (Sokal and Rohlf 1981). <br /> The number of species and vigor of the vegetation shall be tabulated and graphed <br /> over the period of the monitoring study to evaluate trends in species composition or <br /> numbers resulting from the NCSL project or from natural factors. <br /> Wetland Swales. Vegetation monitoring shall take place in the following wetland <br /> Swales: <br /> o all created wetland swales (Swales 47-52), <br /> o all protected ephemerally wet swales (Swale FF), and <br /> o selected unprotected ephemerally wet swales (Swales RR and SS). <br /> The locations of the created wetland swales and protected ephemerally wet swales are <br /> shown in Figure 6; the location of the unprotected swales are shown in Figure 2. A total <br /> of 10 samples will be taken from six created wetland swales, 20 samples from one protected <br /> 54 <br />