In wetlands, the top predators are dragonflies, damselflies, and beetles. What the manual covers The New England manual is designed for freshwater wetlands with standing water present. Sampling methods for forested wetlands, wet meadows, and other wetlands with saturated soils are not included. The bioassessment described in the manual requires identification of invertebrates to family level. A greater number of families indicates better conditions.
More similarity indicates a healthier site.
A high ratio is indicative of impairment. Blank forms and data sheets are also provided. The manual does not include an identification key, but it does suggest taxonomic guides.