Australia-Wide Assessment of River Health: Tasmanian AusRivAS Sampling and Processing Manual
T. Krasnicki, R. Pinto and M. Read
Department of Primary Industries, Water and Environment
Monitoring River Health Initiative Technical Report Number 16
Environment Australia, 2002
ISBN 0 724 66960 4
About the Manual
In Tasmania, models have been created for both Riffle and Edge habitats. The reach is defined as 100m of stream length and within the stream only. Areas of riffle and edge habitats that are representative of the reach should be chosen for sampling.
The riffle habitat is one of flowing broken water over gravel, pebble, cobble or boulder, with a depth greater than 10 cm.
The edge habitat consists of slow flowing or still waters adjacent to the bank, preferably with overhanging or emergent vegetation, undercut banks, root mats or other suitable habitat providing cover and refuge for macroinvertebrates.