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Seneca II -W, C-1982-057, SL7 Veg Review <br />July 30, 2020 <br />Page 4of5 <br />The 2016 upland shrub plot met statistical sample adequacy and exceeded the woody plant standard <br />for 2016. <br />Woody plant success standards were achieved for the 2016 sample data for background and the three <br />concentrated shrub communities. <br />Species Diversity: <br />Seneca II West has several different criteria for determining reclamation success for species diversity. <br />Mandatory standard A requires that no one species comprise greater than 60% relative cover. <br />For 2015 data Table J-1 demonstrates that the most abundant single species was Western wheatgrass <br />(Pascopyrum smithii) with 23.7% relative cover. This is acceptable for 2015. <br />Alternate Diversity Standard B: 75% species distribution in the combined weighted reference area. <br />=26.8 sp. Per 100 sq Meters. Probabilty adjusted to 20.2 sp. 2015 BR -B-3 Adjusted to remove noxious <br />species=24.8 sp/100 sq. M. <br />The BRB-3 met Alternate Test B for 2015. <br />Alternate Diversity Test C: The similarity index. Refer to table J-7 for the 2015 data. The Similarity <br />index between the lifeform species density for prescribed lifeforms for the 2015 BRB-3 and the Mean <br />Species Density for the acreage weighted reference area is 73%. This value exceeds 90% of the <br />standard of 70% (0.9 X 70% =63%). Therefore, Alternate Diversity Test C was successful for BR -B- <br />3 for 2015. <br />Alternate Diversity Test D: The total number of native species in an adequate sample of 2015 BRB-3 <br />herbaceous cover was 39. The total number of native species in an adequate sample of 2015 weighted <br />reference area herbaceous cover was 23.6. The BRB-3 native species exceeded that of the 2015 <br />Weighted Reference Area, so Alternate Diversity Test D is considered successful for 2015. <br />For 2015 BRB-3, Mandatory Test A passed, alternate species diversity tests, B, C and D passed as <br />well. The BR -B-3 is considered successful for species diversity for 2015. <br />For 2016: <br />Mandatory standard A requires that no one species comprise greater than 60% relative cover. <br />For 2016 data Table J-5 demonstrates that the most abundant single species was Alfalfa (Medicago <br />sativa) with 28.6% relative cover. This is acceptable for 2016. <br />Alternate Diversity Standard B: 75% species distribution in the combined weighted reference area. <br />=27.97 sp. Per 100 sq Meters for 2016. Probabilty adjusted to 22.2 sp. 2016 BRB-3 Adjusted to <br />remove noxious species=24.1 sp/100 sq. M. <br />The BRB-3 met Alternate Test B for 2016. <br />