STREAM MACROINVERTEBRATES. Biotic Indicators Why are they Important? Easy to find and collect Easy...

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