Watershed Watch Community Science
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Watershed Watch Community Science
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Watershed Watch MethodsIntroduction & What is a Watershed?1 Quiz
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How Do I Collect Watershed Health Data?How to Measure Stream Chemistry?4 Topics|1 Quiz
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What is an Benthic Macroinvertebrate, How to Sample, What do they tell us about Watershed Health?4 Topics|1 Quiz
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How do we Measure the Health of Riparian Areas7 Topics|1 Quiz
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How to Measure Streamflow?5 Topics|1 Quiz
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How to I Turn My Data Into Action?How to organize and interpret my data and develop findings?
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How to make a community presentation with my findings?
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How write a watershed management plan?
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We Calibrate Because We Care! ~ How to maintain and calibrate equipment
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How can I find work in the field of watershed science?
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How can I influence policymakers and turn my data into action?
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Question 1 of 5
1. Question
Where might you decide to sample for benthic macroinvertibrates?
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Question 2 of 5
2. Question
What are some helpful steps in sorting a sample of benthic invertibrates?
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Question 3 of 5
3. Question
What are the names of these pollution sensitive benthic invertabrates (group 1)?
Sort elements
- Stonefly: Order Plecoptera 1/2" -1", 6 legs with hooked tips, antennae, 2 hairĀlike tails. Smooth (no gills) on lower half of body.
- Mayfly: Order Ephemeroptera 1/4" -1", brown, moving, plate-like or feathery gills on sides of lower body (see arrow), 6 large hooked legs, antennae, 2 or 3 long, hair-like tails. Tails may be webbed together.
- Caddisfly: Order Trichoptera Up to 1", 6 hooked legs on upper third of body, 2 hooks at back end. May be in a stick, rock or leaf case with its head sticking out. May have fluffy gill tufts on underside.
- Dobsonfly (Hellgrammite): Order Megaloptera 3/4" -4", dark-colored, 6 legs, large pinching jaws, eight pairs feelers on lower half of body with paired cotton-like gill tufts along underside, short antennae,2 tails and 2 pairs of hooks at back end.
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Give it another try! Remember that the number of tails is key to identifying Mayflies / Stoneflies.
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Question 4 of 5
4. Question
What are the names of these somewhat pollution tollerant benthic invertabrates (group 2)?
Sort elements
- Dragon Fly: Order Odonata, Suborder Anisoptera 1/2"-2", large eyes, 6 hooked legs. Wide oval to round abdomen.
- Damselfly: Order Odonata, Suborder Zygoptera 1/2"-1", large eyes, 6 thin hooked legs. 3 broad oar-shaped tails, positioned like atripod. Smooth (no gills) on sides of lower half of body.
- Waterboatman, Backswimmer: Order Hemiptera, suborder Hateroptera Leathery wings.
- Crane Fly: Order Diptera 1/3" -2", milky, green or light brown, plump caterpillar-like segmented body. 4 fingerĀ like lobes at back end.
- Watersnipe Fly Larva: Order Diptera 1/4" -1", pale to green, tapered body, many caterpillar-like legs, conical head, feathery "horns" at back end
- Scud: Order Amphipoda 1/4", white to gray, body higher than it is wide, swims sideways, more then 6 legs, resembles small shrimp.
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Question 5 of 5
5. Question
What are the names of these pollution tollerant benthic invertabrates (group 3)?
Sort elements
- Midge Fly Larva: Order Diptera Up to 1/4", dark head, worm-like segmented body, 2 tiny legs on each side.
- Leech: Order Hirudinea 1/4" -2", brown, slimy body, ends with suction pads.
- Blackfly Larva: Order Diptera Up to 1/4", one end of body wider. Black head, suction pad on other end.
- Aquatic Worm: Order Worm 1/4"-2", can be very tiny; thin worm-like body.
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