EAI’s scientists have an extensive work history in benthic ecology, having analyzed a multitude of macroinvertebrate samples from a multitude of discrete locations throughout the United States.  Individual taxonomists specialize in one of the primary groups comprising the benthic community: annelids, crustaceans, and mollusks. Comparison of benthic community structure pre- and post-construction and/or between affected areas and reference sites are used to assess impacts from dredging, beach nourishment, marina/dock construction and operation, exploratory drilling, industrial construction, power plant operation, and utility corridor installation.  Benthic community characteristics, including density, species richness, dominance, diversity and evenness, have been documented over varying spatial and temporal scales.