1 / 12

Biological Properties

Biological Properties. Biological Properties.

thuyet
Download Presentation

Biological Properties

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Biological Properties

  2. Biological Properties • Biological attributes of a waterway can be important indicators of water quality. Biological attributes refer to the number and types of organisms that inhabit a waterway. The poorer the quality of water, the fewer the number and types of organisms that can live in it.

  3. Benthic Macroinvertebrates (bottom-dwelling)(animals w/o backbones visible to naked eye) Hydropsyche sp. (Caddisfly larva) Heptageniidae sp. (Mayfly larva) Perlodidae sp. (Stonefly larva) • Great candidates for biological monitoring…

  4. Macroinvertebrates as Indicators • Limited migration patterns–good indicators of localized conditions and site-specific impacts Easy to sample and identify • Broad range of habitat requirements and sensitivities to pollution

  5. The Tolerance Index0 - 10 0 10 most pollution sensitive e.g. Stoneflies most pollution tolerant e.g. Midges & Leeches contain hemoglobin, tolerate lower DO, prefer soft substrate, less sensitive to toxins require high DO, clear water, rocky cobble substrate

  6. Stonefly Water Penny Beetle Mayfly Dobsonfly Alderfly Mussel Snipe Fly Riffle Beetle Macroinvertebrates as Indicators Pollution Sensitive (“Clean Water”) Benthos

  7. Macroinvertebrates as Indicators Blackfly Caddisfly Isopod Cranefly Somewhat Pollution Tolerant Benthos Damselfly Dragonfly Crayfish Amphipod

  8. Macroinvertebrates as Indicators Pollution Tolerant (“Polluted Water”) Benthos Pouch Snail Midgefly Worm Leech

More Related