Site ARC1a ARC1 ARC2 ARC3 ARC4 ARC5 ARC6 ARC7 ARC8 ARC9 ARC10
Taxonomic Richness 23.3 35.0 38.0 40.0 33.0 28.7 33.3 37.0 33.3 32.3 31.0
% Dominant Taxon 36.8 30.2 20.9 18.0 25.3 29.3 22.4 14.5 19.7 30.2 37.1
# Ephemeroptera Taxa 0.0 0.0 2.3 0.7 2.0 2.3 1.0 1.0 0.7 2.0 0.3
# EPT Taxa 0.0 0.3 2.3 1.0 3.0 2.3 1.0 1.7 0.7 2.3 0.3
EPT Index (%) 0.0 0.0 2.0 0.7 6.7 13.0 3.0 1.0 0.3 1.3 0.0
Shannon Diversity 1.9 2.3 2.5 2.7 2.3 2.1 2.7 2.9 2.7 2.3 2.1
Tolerance Value 8.7 8.7 7.4 7.6 7.6 7.5 7.4 7.2 7.6 7.4 8.0
% Tolerant Taxa (8-10) 57.7 58.0 37.7 50.7 40.0 42.3 47.7 41.3 47.7 43.3 47.0
% Collector-Filterers 1.0 4.3 18.7 11.0 12.3 4.0 5.3 15.7 13.0 14.3 3.3
% Collectors Gatherers 79.0 71.7 53.7 74.7 52.3 60.7 59.7 61.3 55.7 53.3 75.0
% Grazers 9.3 7.3 2.0 8.3 1.0 1.0 1.3 1.7 0.3 0.3 0.7
% Predators 6.0 10.3 2.3 1.3 0.7 0.3 0.0 1.0 7.7 0.7 0.7
% Shredders 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.3 0.0 0.3 0.0
Abundance (#/sample) 4222 5006 3696 1273 5220 6965 5021 1931 3044 4244 6780
Table 9: Three year mean benthic metrics by site for the 11 Arcade Creek sites sampled in spring 2009-2011.