Qualities and quantities of parameters composing the bog systems in Northeast Arkansas are not entirely reflective of those defining bogs of the northern United States. While pH is restricting to the organisms of each bog studied (4.8-6.9), the major limiting factor is the amount of available water. Three acidophilic bogs with shallow water depths (2-30 cm) yielded a total of 75 aquatic macroinvertebrate taxa. The bog with greatest surface area supported 67 taxa and a mean numerical standing crop of 14 organisms/2 hr sampling period. The bog with the smallest surface area had 13 taxa and a mean standing crop of 2 organisms/2 hr sampling period. No clear seasonal fluctuations were observed in these bogs because the standing crops were never great, and because the amount of water available exerted the greater influence. Water levels did not always fluctuate in consort among the bogs.
Farris, Jerry L. and Harp, George L.
"Aquatic Macroinvertebrates of Three Acid Bogs on Crowley's Ridge in Northeast Arkansas,"
Journal of the Arkansas Academy of Science: Vol. 36
, Article 9.
Available at: http://scholarworks.uark.edu/jaas/vol36/iss1/9