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50/20 Thresholds <br />Tree Stratum <br />1 Sapling/Shrub Stratum <br />2 Herb Stratum <br />3 Woody Vine Stratum <br />4 <br />5 Dominance Test Worksheet <br />6 <br />7 <br />8 (A) <br />9 <br />10 (B) <br />=Total Cover <br />(A/B) <br />1 Prevalence Index Worksheet <br />2 Total % Cover of: <br />3 OBL species x 1 = <br />4 FACW species x 2 = <br />5 FAC species x 3 = <br />6 FACU species x 4 = <br />7 UPL species x 5 = <br />8 Column totals (A)(B) <br />9 Prevalence Index = B/A = <br />10 <br />=Total Cover <br />Hydrophytic Vegetation Indicators: <br />Rapid test for hydrophytic vegetation <br />X Dominance test is >50% <br />1 Prevalence index is ≤3.0* <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />10 <br />11 <br />12 <br />13 <br />14 <br />15 <br />=Total Cover <br />1 <br />2 <br />3 <br />4 <br />5 <br />=Total Cover <br />Remarks: (Include photo numbers here or on a separate sheet) <br />Y <br />Hydrophytic <br />vegetation <br />present? <br />*Indicators of hydric soil and wetland hydrology must be <br />present, unless disturbed or problematic <br />Definitions of Vegetation Strata: <br />Tree - Woody plants 3 in. (7.6 cm) or more in diameter <br />at breast height (DBH), regardless of height. <br /> <br />Sapling/shrub - Woody plants less than 3 in. DBH and <br />greater than 3.28 ft (1 m) tall. <br />Herb - All herbaceous (non-woody) plants, regardless of <br />size, and woody plants less than 3.28 ft tall. <br />Woody vines - All woody vines greater than 3.28 ft in <br />height. <br />305 <br />3 <br />75.00% <br />3.05 <br />4 <br />95 <br />3 <br />0 <br />Tree Stratum Plot Size (30 ft Radius <br />Populus tremuloides <br />0 <br />20 <br />285 <br />0 <br />0 <br />)Absolute <br />% Cover <br />Dominant <br />Species <br />Indicator <br />Status <br />70 Y <br /> <br />FAC <br /> <br /> <br /> <br /> <br />Y <br /> <br /> <br /> <br /> <br /> <br />FAC <br />70 <br />Sapling/Shrub <br />Stratum Plot Size (15 ft Radius )Absolute <br />% Cover <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Lonicera tatarica 5 Y FACU <br />Dominant <br />Species <br />Indicator <br />Status <br />Rhamnus cathartica 20 <br /> <br /> <br /> <br /> <br /> <br />25 <br />Herb Stratum Plot Size (5 ft Radius )Absolute <br />% Cover <br />Dominant <br />Species <br />Indicator <br />Status <br />Rhamnus cathartica 5 Y FAC <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Woody Vine <br />Stratum Plot Size ( <br /> <br />30 ft Radius )Absolute <br />% Cover <br />Dominant <br />Species <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />0 <br /> <br /> <br /> <br /> <br /> <br /> <br />5 <br /> <br /> <br />Sampling Point:SP1-1UpVEGETATION - Use scientific names of plants <br />Morphological adaptations* (provide <br />supporting data in Remarks or on a <br />separate sheet) <br />0 <br /> <br /> <br /> <br /> <br />Indicator <br />Status <br />Number of Dominant <br />Species that are OBL, <br />FACW, or FAC: <br />Percent of Dominant <br />Species that are OBL, <br />FACW, or FAC: <br />Total Number of <br />Dominant Species Across <br />0 <br />0 <br /> <br />100 <br />0 <br />5 <br />Prevalence index greater than 3.0 <br />Problematic hydrophytic vegetation* <br />(explain) <br />50%20% <br />1 <br />5 <br />14 <br />13 <br />35 <br /> <br /> <br /> <br /> <br /> <br /> <br />US Army Corps of Engineers Northcentral and Northeast Region