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Key To Macroinvertebrates in Rivers and Streams PowerPoint Presentation
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Key To Macroinvertebrates in Rivers and Streams - PowerPoint PPT Presentation


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Key To Macroinvertebrates in Rivers and Streams. Shell Present. Shell Absent. Shells. Single Shell (snails). Double Shell. “Shell” with legs. Go to Slide 1. Snails. Group III. Group I. Go to Slide 1. Group II Clams & Mussels. Go to Slide 1. No Legs. Legs Present. Wormlike.

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Presentation Transcript
slide2

Shells

Single Shell (snails)

Double Shell

“Shell” with legs

Go to Slide 1

slide3

Snails

Group III

Group I

Go to Slide 1

slide4

Group II

Clams & Mussels

Go to Slide 1

slide5

No Legs

Legs Present

Wormlike

With tentacles, brushes or “tails”

Go to Slide 1

slide6

Group III

Leeches

Group III

Other Worms

Group III

Midge Larvae

Go to Previous Slide

Go to Slide 1

slide7

Group II

Crane Fly, Horse Fly, Deer Fly Larvae

Group III

Black Fly Larvae

Go to Previous Slide

Go to Slide 1

slide8

Legs Present

Ten + Legs

Four Pairs of Legs

Three Pairs of Legs

Go to Slide 1

slide9

Crustaceans

Group II

Scuds or Side swimmers - Amphipods

Group II

Crayfish - Decapods

Group II

Sowbugs - Isopods

Go to Previous Slide

Go to Slide 1

slide10

Wings Present – Adult Insects

Wings Absent –

Insect Larvae or Nymphs

Go to Slide 1

slide11

Beetle – like Insects

Wings hard

Other Insects

Wings leathery

Go to Slide 1

slide12

Beetle – like Insects

Wings hard

Not counted in index – record on data sheet

Group I

Go to Previous Slide

Go to Slide 1

slide13

Other Insects

Wings leathery

Not counted in index – record on data sheet

Go to Slide 1

slide14

Firmly attached to rocks

Obviously free moving

Go to Slide 1

slide15

Group I

Group III

Go to Previous Slide

Go to Slide 1

slide16

“Tail” filaments present

“Tail” filaments absent

Go to Slide 1

slide17

Group II

Group II

Go to Previous Slide

Go to Slide 1

slide18

One or two “Tail” filaments

Three “Tail” filaments

Go to Slide 1

slide19

Elongated body, extra “appendages”

Six legs, obviously insects

Go to Slide 1

slide20

Group I

Group II

Go to Slide 1

slide21

Group I

Group II

Group I

Other Beetle Larva

Go to Slide 1

slide22

Group II

Group I

Go to Slide 1

slide23

Four Pairs of Legs

Not counted in index – record on data sheet

Go to Slide 8

Go to Slide 1