1 / 10

BIOINDICATION IN AQUATIC ECOSYSTEMS

BIOINDICATION IN AQUATIC ECOSYSTEMS. Biological Methods to Assess Water Quality. Physiological methods = experimental - ecological methods Ecological methods = descriptive - analytic field methods. Physiological Methods = Biotests. Activity of particular metabolic features of the sample

tiger-wright
Download Presentation

BIOINDICATION IN AQUATIC ECOSYSTEMS

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. BIOINDICATIONIN AQUATIC ECOSYSTEMS

  2. Biological Methods to Assess Water Quality • Physiological methods= experimental - ecological methods • Ecological methods = descriptive - analytic field methods

  3. Physiological Methods = Biotests • Activity of particular metabolic features of the sample • Effect of the sample on the bioactivity of exposed organism

  4. Ecological Methods = Bioindication • Community of organism reflects the situation of the ecosystem • Single Taxa have specific optima and tolerance ranges for selected environmental factor = Bioindicators

  5. Index of Saprobity

  6. We can study populations of Macroinvertebrates as bioindicators of the health and oxygenation of a stream. • Macro means large enough to see with your eyes. • Invertebrate means animals without backbones. 95% of all animals are invertebrates! • Examples: insect larvae, crayfish, worms, adult aquatic insects

  7. Why do these macroinvertebratesmake good bioindicators of stream and watershed health? •live in the water for all or most of their life •stay in areas suitable for their survival •are easy to collect •differ in their tolerance to amount and types of pollution •are easy to identify in a laboratory •often live for more than one year •have limited mobility

  8. Bioindicators are grouped according to their tolerance of pollution/water quality. http://www.pca.state.mn.us/artwork/kids/dragonfly2.jpggDragonfly larvae tolerate some pollution. 1.http://www.schoolsliaison.org.uk/woodgate/streamhabitat. Caddisfly larvae are intolerant of pollution. Leeches and blood midge larvae are very tolerant of pollution 1.http://www.schoolsliaison.org.uk/woodgate/streamhabitat & www.pbase.com/ michellemahood/image/25470143

  9. These are Bioindicators which are Pollution Intolerant. Their presence tells you that the water quality is excellent. We will use the dichotomous key to identify some of these! images from pathfinderscience.net unless otherwise cited http://www.trilobites.info/triloimposterpennymr005872_md.jpg

More Related