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Assessing Water

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Benthic: of, relating to, or occurring at the bottom of a body of water ... Macroinvertebrate: spineless animal that can be retained on a 500 (micron) net ... – PowerPoint PPT presentation

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Title: Assessing Water


1
Assessing Water Quality with Biology
2
What are Benthic Macroinvertebrates?
Benthic of, relating to, or occurring at the
bottom of a body of water Benthos organisms
that live on or in the bottom of a body of
water Macroinvertebrate spineless animal that
can be retained on a 500 µ (micron) net
3
Stream Sampling for Macroinvertebrates
  • Sample stream habitats
  • Collect macroinvertebrates based on MBSS
    protocols
  • ID macroinvertebrates in the classroom
  • Apply metric analyses of organism groups
  • Determine water quality of stream

4
Stream Reach
Direction of sampling
5
Stream Habitats
  • Riffles
  • Runs
  • Pools
  • Root mass, leaf litter
  • Undercut banks

6
Riffles
  • Do the dance in front of the net
  • Remove organisms from under large rocks
  • Collect material until water runs clear

7
Pools
  • Jab at material on the bottom of the pool.
  • Sweep net to collect organisms

8
Root mass and leaf litter
  • Jab net under roots and leaf litter
  • Remove as much debris as possible
  • Inspect debris for organisms

9
Undercut Bank
  • Jab net under the bank
  • Remove as much debris as possible
  • Inspect debris for organisms

10
Crayfish
  • Crayfish should be tallied and released

11
Organisms released, not tallied
Blacknosed Dace
Salamanders
American Eel
Green Frog
12
DNR Review Sheet
13
  • DNR is trying a streamside ID technique
  • Volunteers collect and ID samples streamside

14
Tally Sheet
  • Your sample ID will take place in the classroom.

15
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16
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17
GIS
  • All stream data can be mapped
  • Temperature
  • Depth
  • Width
  • Trash
  • etc
  • All metrics can be mapped
  • Overall water quality based on metrics
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