The main ditch of Flat Bayou Drainage in north central Jefferson County carries water southward into Plum Bayou which then shortly empties into the Arkansas River. Flat Bayou proper flows northward into Wabbaseka Bayou which in turn flows into the Arkansas River in northeastern Lincoln County. Two sites on the main ditch were sampled for physico-chemical parameters and benthic macroin vertebrates on 9 September, 7 October and 11 November 1978. No visible detrimental effects were attributed to physico-chemical characteristics. Thirty-one below-family taxa and 19 families were found in abundance from zero at one site and date to 3580 per m² at one site and date. Corbicula was by far the most numerous taxon whereas several taxa (e.g. Placobdella, Piscicolarla, Lampsilis, Uniomerus, Campeloma, Berosus and Palpomyia) were represented by a per m² density of 8.6 on one date at one site. Dominance indices were generally greater, and distribution values indicated stronger clumping at Site 1 whereas diversity values were generally greater at Site 2. These indicated the substrate at Site 2 was more suitable for community development.
Rickett, John D.
"Abundance, Diversity and Distribution of Benthic Macro-Invertebrates in the Flat Bayou Drainage Area, Jefferson County, Arkansas,"
Journal of the Arkansas Academy of Science: Vol. 33
, Article 24.
Available at: http://scholarworks.uark.edu/jaas/vol33/iss1/24