PNAMP: PNAMP Invert Collection: Benthic invertebrate sample collection in wadeable streams
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Official Method Name
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Methods for the collection and analysis of benthic macroinvertebrate assemblages in wadeable streams of the Pacific Northwest |
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Current Revision
| 2007 |
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Media
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WATER (Waterbody type - Wadeable stream) |
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Instrumentation
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Invertebrate Net (w/ handle) |
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Method Subcategory
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Population/Community |
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Method Source
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Citation
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Hayslip, Gretchen, editor. 2007. Methods for the collection and analysis of benthic macroinvertebrate assemblages in wadeable streams of the Pacific Northwest. Pacific Northwest Aquatic Monitoring Partnership, Cook, Washington. 31 p. |
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Protocol
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PNAMP 2007 - Methods for collection and analysis of benthic invertebrate samples |
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Brief Method Summary
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Macroinvertebrate samples should be taken from all available habitats within the stream reach using a D-frame kick net and Surber sampler. A 0.5 mm mesh is recommended. Riffles (or fast moving water habitats, this document will use the term riffle for simplicity) are the primary habitat type recommended for sampling macroinvertebrates in the Pacific Northwest. Samples should be combined into a single composite, field processed, and preserved. |
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Scope and Application
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Refer to the sections of the protocol that describe how to collect benthic macroinvertebrate samples from wadeable streams in the Pacific Northwest of the United States. Sample design, field methods, and quality assurance are discussed at length. |
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Applicable Concentration Range
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Interferences
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Sorting effectiveness varies with the type and amount of sample detritus. An excessive amount of organic detritus reduces one's ability to adequately differentiate organisms (especially small, cryptic organisms) from the sample matrix. |
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Quality Control Requirements
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Sample Handling
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Table 1 provides a summary of field method recommendations |
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Maximum Holding Time
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Relative Cost
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Unknown |
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Sample Preparation Methods
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Preserve and store in 95% ethanol |
