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STREAM STREAM MACROINVERTEBRATMACROINVERTEBRAT
ESES
Biotic IndicatorsBiotic IndicatorsWhy are they Why are they Important?Important?
Easy to find and collectEasy to find and collect Live in water most of their Live in water most of their
lifelife Stay in areas suitable for Stay in areas suitable for
their survivaltheir survival Easy to identifyEasy to identify Differ in tolerance (Types and Differ in tolerance (Types and
Amount of Pollution)Amount of Pollution)
3 Main Types of 3 Main Types of InsectsInsects
Class IClass I- Pollution Sensitive- Pollution Sensitive found in good quality waterfound in good quality water examples: caddisflyexamples: caddisfly
mayflymayfly dobsonflydobsonfly water pennywater penny
3 Main Types of 3 Main Types of InsectsInsects
Class IIClass II- Moderate Pollution - Moderate Pollution Tolerance, found in good or Tolerance, found in good or fair quality waters fair quality waters
examples: damselflyexamples: damselfly scudscud crayfishcrayfish crane flycrane fly
3 Main Types of 3 Main Types of InsectsInsects
Class IIIClass III- Pollution Tolerant, - Pollution Tolerant, found in all types of waterfound in all types of water
examples: black flyexamples: black fly
leechesleeches
aquatic wormsaquatic worms
pouch snailspouch snails
Pollution Pollution Sensitive Sensitive
MacroinvertebratMacroinvertebrateses
Class I InsectsClass I Insects
Order: TrichopteraOrder: TrichopteraCaddisfliesCaddisflies
Order: TrichopteraOrder: TrichopteraCaddisfliesCaddisflies
Fingernet Caddis
Free living Caddis
Order: TrichopteraOrder: TrichopteraCaddisfliesCaddisflies
Net-spinning Caddisfly
Order: TrichopteraOrder: TrichopteraCaddisfliesCaddisflies
Adults
Order EphemeropteraOrder EphemeropteraMayfliesMayflies
Nymph
Adult
Order: MegalopteraOrder: MegalopteraDobsonflies/AlderfliesDobsonflies/Alderflies
Dobsonfly (Hellgrammite)
Order: MegalopteraOrder: MegalopteraDobsonflies/AlderfliesDobsonflies/Alderflies
Alderfly
Order: MegalopteraOrder: MegalopteraDobsonflies/AlderfliesDobsonflies/Alderflies
Dobsonfly Adult
Alderfly Adult
Order: PlecopteraOrder: PlecopteraStonefliesStoneflies
Nymphs Adult
Order: ColeopteraOrder: ColeopteraWater PennyWater Penny
Order: Order: ColeopteraColeopteraRiffle BeetleRiffle Beetle
LarvaAdult
Class: GastropodaClass: GastropodaGilled SnailsGilled Snails
Moderate Pollution Moderate Pollution Tolerant Tolerant
MacroinvertebratesMacroinvertebrates
Class II InsectsClass II Insects
Order: OdonataOrder: OdonataDragonfly NymphDragonfly Nymph
Order: OdonataOrder: OdonataDamselflyDamselfly
Order: OdonataOrder: OdonataDragonfly and Dragonfly and
DamselflyDamselfly
Dragonfly Adult
Damselfly Adult
Order: IsopodaOrder: IsopodaSowbugSowbug
Order: DipteraOrder: DipteraCrane flyCrane fly
Larva
Adult
Order: AmphipodaOrder: AmphipodaScudScud
Order: HemipteraOrder: HemipteraWater BoatmanWater Boatman
Order: HemipteraOrder: HemipteraBackswimmerBackswimmer
Order: HemipteraOrder: HemipteraWater StriderWater Strider
Order: HemipteraOrder: HemipteraWater ScorpionWater Scorpion
Order: ColeopteraOrder: ColeopteraWhirligig beetleWhirligig beetle
Larva
Order: ColeopteraOrder: ColeopteraWhirligig beetleWhirligig beetle
Adult
Order: ColeopteraOrder: ColeopteraWater Scavenger Water Scavenger
BeetleBeetle
Adult
Order: ColeopteraOrder: ColeopteraGiant Water BeetleGiant Water Beetle
Adult
Order: ColeopteraOrder: ColeopteraPredacious Diving Predacious Diving
BeetleBeetle
Adult
Larva
Order: DecapodaOrder: DecapodaCrayfishCrayfish
Pollution Tolerant Pollution Tolerant MacroinvertebratMacroinvertebrat
eses
Class III InsectsClass III Insects
Order: DipteraOrder: DipteraBlack FlyBlack Fly
Adult
Larva
Class: HirudineaClass: HirudineaLeechesLeeches
Phylum: AnnelidaPhylum: AnnelidaAquatic WormsAquatic Worms
Oligochaete
Phylum: Phylum: PlatyhelminthesPlatyhelminthes
PlanariaPlanaria
Class: GastropodaClass: GastropodaPouch (Pond) SnailsPouch (Pond) Snails
Order: ChironomidaeOrder: ChironomidaeMidgesMidges
Order: ChironomidaeOrder: ChironomidaeTrue Midges (non-True Midges (non-
biting)biting)
Order: ChironomidaeOrder: ChironomidaeBiting MidgeBiting Midge
Class: GastropodaClass: GastropodaOrb SnailOrb Snail
Order: PelecypodaOrder: PelecypodaClamsClams
Corbicula
Fingernail clam