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Why Bother?. Assess abundance, composition of organismsTo collect biological samplesStomach samples for feeding habitsTissue samples for contaminant levelsGonads to assess maturation. Selectivity and Bias. Sample Catch is a product of:Local AbundanceSusceptibility of organisms to sampling devi
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1. A Bestiary of Sampling Methods Bestiary: noun
a medieval book (usually illustrated) with allegorical and amusing descriptions of real and fabled animals
2. Why Bother? Assess abundance, composition of organisms
To collect biological samples
Stomach samples for feeding habits
Tissue samples for contaminant levels
Gonads to assess maturation
3. Selectivity and Bias Sample Catch is a product of:
Local Abundance
Susceptibility of organisms to sampling device
Varies by: Species, size, behavior
No two gears sample the same species, size groups, the same way
4. Gill Nets