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Field surveys empirically link exposures to effects. As collections
of exposure and effects data for ecological entities, they measure
biological changes in natural settings.
When describing field surveys:
- Consider whether there is a causal relationship between stressors
and effects; without a solid causal relationship, conclusions
about observed effects could be inaccurate.
- Recognize that field surveys taken at one point in time are
usually not predictive; surveys can only describe existing conditions.
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Example Use of
Field Surveys for Risk Estimation
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Advantages and
Limitations of Field Surveys
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Relevant
guidelines section(s): 5.1.1
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