Macroinvertebrates of Luxapalila Creek, Mississippi and Alabama, 1987-89
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
Pagination or Media Count:
A survey of the macroinvertebrate community of four pools and four riffles in Luxapalila Creek, Mississippi and Alabama, was conducted in 1987-89. The purpose was to collect preconstruction data before the creek is impacted by selective clearing and snagging, bank protection, construction of notched sills, and a fabric dam. Luxapalila Creek can be characterized as exhibiting high macroinvertebrate species richness, diversity, and equitable distribution of chironomid midge larvae and oligochaete worm species. These two groups dominated the fauna and comprised 77 and 62 percent of the macroinvertebrates in pools and riffles, respectively. Total macroinvertebrate density was lower although more stable in pools 6,433-7,229 individualssq m than in riffles where it was higher and more variable 9,662-28,820 individualssq m. Species richness of chironomids appeared to be greater in pools than riffles probably because of drift out of riffles and into pools.