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air stream Biological Benthic aquatic Macroinvertebrate stream survey Caddisfly Larvae Dobsonfly/Hellgrammites Gilled Snails Mayfly Nymphs Riffle Beetle Adult Sowbugs Stonefly Nymphs Water Penny Beetle Larvae "S" Total Number of X's Multiply by Factor: 3 = "S" Index Value Alderfly Larvae Beetle Larvae Clams Crane Fly Larvae Crayfish Damselfly Nymphs Dragonfly Nymphs "SS" Total Number of X's Multiply by Factor: 2 = "SS" Index Value Aquatic Worms Blackfly Larvae Leeches Midge Larvae Pouch Snails Water Snipe Fly Larvae "T" Total Number of X's Multiply by Factor: 1 = "T" Index Value sensitive "s" somewhat sensitive "ss" # # # tolerant "t" add Index Values "s" + "ss" + "t" = stream "WQ" total Index Value = ______ Water Quality: excellent (>22)_____ Good (17-22) Fair (11-16)_____ Poor (<11)_____ buzzard run Biological Benthic aquatic Macroinvertebrate stream survey Caddisfly Larvae Dobsonfly/Hellgrammites Gilled Snails Mayfly Nymphs Riffle Beetle Adult Sowbugs Stonefly Nymphs Water Penny Beetle Larvae "S" Total Number of X's Multiply by Factor: 3 = "S" Index Value Alderfly Larvae Beetle Larvae Clams Crane Fly Larvae Crayfish Damselfly Nymphs Dragonfly Nymphs "SS" Total Number of X's Multiply by Factor: 2 = "SS" Index Value Aquatic Worms Blackfly Larvae Leeches Midge Larvae Pouch Snails Water Snipe Fly Larvae "T" Total Number of X's Multiply by Factor: 1 = "T" Index Value sensitive "s" somewhat sensitive "ss" # # # tolerant "t" add Index Values "s" + "ss" + "t" = stream "WQ" total Index Value = ______ Water Quality: excellent (>22)_____ Good (17-22) Fair (11-16)_____ Poor (<11)_____ rusty river Biological Benthic aquatic Macroinvertebrate stream survey Caddisfly Larvae Dobsonfly/Hellgrammites Gilled Snails Mayfly Nymphs Riffle Beetle Adult Sowbugs Stonefly Nymphs Water Penny Beetle Larvae "S" Total Number of X's Multiply by Factor: 3 = "S" Index Value Alderfly Larvae Beetle Larvae Clams Crane Fly Larvae Crayfish Damselfly Nymphs Dragonfly Nymphs "SS" Total Number of X's Multiply by Factor: 2 = "SS" Index Value Aquatic Worms Blackfly Larvae Leeches Midge Larvae Pouch Snails Water Snipe Fly Larvae "T" Total Number of X's Multiply by Factor: 1 = "T" Index Value sensitive "s" somewhat sensitive "ss" # # # tolerant "t" add Index Values "s" + "ss" + "t" = stream "WQ" total Index Value = ______ Water Quality: excellent (>22)_____ Good (17-22) Fair (11-16)_____ Poor (<11)_____ blue bayou Biological Benthic aquatic Macroinvertebrate stream survey Caddisfly Larvae Dobsonfly/Hellgrammites Gilled Snails Mayfly Nymphs Riffle Beetle Adult Sowbugs Stonefly Nymphs Water Penny Beetle Larvae "S" Total Number of X's Multiply by Factor: 3 = "S" Index Value Alderfly Larvae Beetle Larvae Clams Crane Fly Larvae Crayfish Damselfly Nymphs Dragonfly Nymphs "SS" Total Number of X's Multiply by Factor: 2 = "SS" Index Value Aquatic Worms Blackfly Larvae Leeches Midge Larvae Pouch Snails Water Snipe Fly Larvae "T" Total Number of X's Multiply by Factor: 1 = "T" Index Value sensitive "s" somewhat sensitive "ss" # # # tolerant "t" add Index Values "s" + "ss" + "t" = stream "WQ" total Index Value = ______ Water Quality: excellent (>22)_____ Good (17-22) Fair (11-16)_____ Poor (<11)_____ stinky Creek Biological Benthic aquatic Macroinvertebrate stream survey Caddisfly Larvae Dobsonfly/Hellgrammites Gilled Snails Mayfly Nymphs Riffle Beetle Adult Sowbugs Stonefly Nymphs Water Penny Beetle Larvae "S" Total Number of X's Multiply by Factor: 3 = "S" Index Value Alderfly Larvae Beetle Larvae Clams Crane Fly Larvae Crayfish Damselfly Nymphs Dragonfly Nymphs "SS" Total Number of X's Multiply by Factor: 2 = "SS" Index Value Aquatic Worms Blackfly Larvae Leeches Midge Larvae Pouch Snails Water Snipe Fly Larvae "T" Total Number of X's Multiply by Factor: 1 = "T" Index Value sensitive "s" somewhat sensitive "ss" # # # tolerant "t" add Index Values "s" + "ss" + "t" = stream "WQ" total Index Value = ______ Water Quality: excellent (>22)_____ Good (17-22) Fair (11-16)_____ Poor (<11)_____ creek Bottom "Bugs" & "critters" Water Quality "Kick & Pick" aquatic Benthic Biologic Invertebrate Macro ▼ ▼ ▼ ▼ ▼ Lives In Bottom Life No Backbone can see Without Water Form or spine Magnifying Water quality affects which types of life forms or organisms can live in a body of water. Bottom- dwelling Bug Combos (combinations of Benthic Aquatic Macroinvertebrates) change with the changes in water quality (clean to dirty to very polluted). These species of aquatic animals are sorted by their tolerance levels or ability to stay alive in different types of water quality. Use the creek "Bugs" & "critters" table to do surveys of bug combos in 5 streams to find water quality values for each one. Directions: Find how many different Benthic "Bugs" live in a stream. 1. Place an "X" in the # box next to each DIFFERENT macroinvertebrate you find. For example, mark only 1 "X" next to "Aquatic Worms," even if you find more. 2. Add Xs for the DIFFERENT SENSITIVE SPECIES FOUND and write SUM next to the "S". Total number of Xs. Do the same for Total # of DIFFERENT TOLERANT SPECIES FOUND. 3) In each # column, multiply Total Number of Xs by the Sensitivity "Factor" to get Index Value. 4) Add 3 Index Values to get the STREAM WATER QUALITY "WQ" TOTAL INDEX VALUE. stream 1. stinky creek 2. Blue Bayou 3. Rusty River 4. Buzzard Run 5. air stream Bug combos column 3 column 2 column 1 Rows 1,3,5 column 2, Rows 4,6 creek Bottom "Bugs" & "critters" table row 1 row 2 row 3 row 4 row 5 row 6 cOLUMN 1 cOLUMN 2 cOLUMN 3 www.of f icialkidsmag.com • April 2021 • 41