Terrestrial arthropod species abundance data at oiled and unoiled sites in a Louisiana saltmarsh ecosystem, April and June, 2013 and 2014

Ten sites along the coast of Louisiana were sampled: 3 lightly-oiled, 4 heavily-oiled sites in Barataria Bay, and 3 reference unoiled sites in Delacroix, St. Bernard Parish northeast of Barataria Bay, to determine the impacts of the Deepwater Horizon oil spill on the Louisiana saltmarsh terrestrial arthropods. Insects were collected via sweep net, 20m inland from the shoreline monthly between April and June of 2013 and 2014.