User:Fairywren/Sandbox2

SIGNAL (make into another page)
SIGNAL is a method using macroinvertebrates to assess water quality from a particular waterbody or stream,with the macroinvertebrates used as bioindicators.

SIGNAL stands for "Stream Invertebrate Grade Number -Average Level" : that is, families of macroinvertbrates have had their sensitivity to water quality assesed and given a score. By examining the macroinvertebrates present the water body or stream can be given a numerical score indicating water quality. Alternatively, there is a version designed for identification that is only taken to the phylum level.

The SIGNAL system has been developed in Australia, hence may not be suitable for other continents. Average Australian water ionic composition is quite different form "world average freshwater" composition.

(Identification can be taken to either the taxonomic level of family, or alternativley for less expereinced samplers, to either the order, class or phylum (depending on the macroinvertebrate type) . )

External references
[http://www.environment.gov.au/water/publications/environmental/rivers/nrhp/pubs/signal.pdf| SIGNAL 2.iv – A Scoring System for Macroinvertebrates (‘Water Bugs’) in Australian Rivers User Manual. Author: Bruce Chessman]

|Waterwatch website

-must add to disambiguation

-merge!!! some of the other bioindicator type pages!!!!!!!!! well look properly at them first..

==new page idea: Eucalyptus cosmophylla==

pg72 costermans a gum find picture at: http://www.anbg.gov.au/photo/apii/id/a/16132

wikispecies has a pg on E. cosmophylla [Wikipecies: Eucalyptus cosmophylla]

paraphrase or quote? Categories: eucalypts/us flora of australia, myrtales of australia