Fretwell, G. (1980) Corroborative studies on the effects of sample variation on three macroinvertebrate biological assessment methods at different water quality states. Ambleside, UK, Freshwater Biological Association, 19pp.
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In recent collaborative biological sampling exercises organised by the Nottingham Regional Laboratory of the Severn-Trent Water Authority, the effect of handnet sampling variation on the quality and usefulness of the data obtained has been questioned, especially when this data is transcribed into one or more of the commonly used biological methods of water quality assessment. This study investigates if this effect is constant at sites with similar typography but differing water quality states when the sampling method is standardized and carried out by a single operator. An argument is made for the use of a lowest common denominator approach to give a more consistent result and obviate the effect of sampling variation on these biological assessment methods.
|Item Type:||Monograph or Serial issue|
|Title:||Corroborative studies on the effects of sample variation on three macroinvertebrate biological assessment methods at different water quality states|
|Number of Pages:||19|
|Publisher:||Freshwater Biological Association|
|Place of Publication:||Ambleside, UK|
|Issuing Agency:||Freshwater Biological Association|
|Additional Information:||Bilateral study of methods 2 - Pollution Report No.8|
|Uncontrolled Keywords:||Sampling; Samplers; Methodology; Standardization; Rivers; Invertebrate larvae; England; Trent River|
|Depositing User:||Hardy B Schwamm|
|Date Deposited:||06 May 2011 16:40|
|Last Modified:||29 Sep 2011 17:09|
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