LEARN NC

If you are unable to do the activities outlined in this section, you can use this sample data from Mud Creek for analysis and discussion.

Sample biological data
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Type and abundance of macroinvertibrates in Mud Creek
Species Taxonomic group Common name Tolerance group Tolerance Value Abundance
Mud Tributary Macroinvertebrates
Notonecta True bugs backswimmer adult II 8.7 1
Simulium Flies black fly larva III 8.7 1
Lepidostoma Caddisflies caddisfly larva I 0.9 10
Brachycentrus Caddisflies caddisfly larva I 2.1 10
Limnephilus Caddisflies caddisfly larva I 2.5 1
Hydropsyche Caddisflies caddisfly larva I 4.3 3
Corydalus cornutus Dobsonflies dobsonfly larva I 5.2 3
Elimia Molluscs pouch snail I 2.5 3
Tubificidae Worms freshwater worm III 7.1 3
Ephemerella Mayflies mayfly nymph I 2 3
Stenonema Mayflies mayfly nymph I 2.1 10
Baetisca Mayflies mayfly nymph I 3.4 1
Isonychia Mayflies mayfly nymph I 3.5 10
Baetis pluto Mayflies mayfly nymph I 4.3 10
Ancyronyx variegata Beetles riffle beetle adult I 6.5 3
Crangonyx Crustacea scud II 7.9 10
Tallaperla Stoneflies stonefly nymph I 1.2 3
Diploperla morgani Stoneflies stonefly nymph I 1.4 10
Pteronarcys Stoneflies stonefly nymph I 1.7 3
Taeniopteryx Stoneflies stonefly nymph I 5.4 10
Psephenus herricki Beetles water penny beetle larva I 2.4 3
Lower Mud Creek Macroinvertebrates
Notonecta True bugs backswimmer adult II 8.7 3
Simulium Flies black fly larva III 8.7 10
Hydropsyche Caddisflies caddisfly larva I 4.3 10
Lestes Damselflies damselfly nymph II 9.4 3
Corydalus cornutus Dobsonflies dobsonfly larva I 5.2 1
Cordulegaster Dragonflies dragonfly nymph II 5.7 10
Libellula Dragonflies dragonfly nymph II 9.6 3
Elimia Molluscs pouch snail I 2.5 1
Tubificidae Worms freshwater worm III 7.1 3
Stenonema Mayflies mayfly nymph I 2.1 3
Baetis pluto Mayflies mayfly nymph I 4.3 3
Ablabesmyia mallochi Flies midge larva III 7.2 1
Ancyronyx variegata Beetles riffle beetle adult I 6.5 3
Crangonyx Crustacea scud II 7.9 3
Taeniopteryx Stoneflies stonefly nymph I 5.4 1
Psephenus herricki Beetles water penny beetle larva I 2.4 3
Upper Mud Creek Macroinvertebrates
Species Taxonomic group Common name Tolerance group Tolerance Value Abundance
Notonecta True bugs backswimmer adult II 8.7 10
Simulium Flies black fly larva III 8.7 3
Antocha Flies crane fly larva II 4.3 3
Lestes Damselflies damselfly nymph II 9.4 10
Cordulegaster Dragonflies dragonfly nymph II 5.7 3
Libellula Dragonflies dragonfly nymph II 9.6 10
Corbicula fluminea Molluscs freshwater clam II 6.1 3
Tubificidae Worms freshwater worm III 7.1 10
Helobdella Worms leech III 9.2 3
Ablabesmyia mallochi Flies midge larva III 7.2 3
Conchapelopia Flies midge larva III 8.4 10
Dicrotendipes modestus Flies midge larva III 8.7 3
Chironomous spp Flies midge larva III 9.6 3
Crangonyx Crustacea scud II 7.9 3