MONTHLY DIFFERENCES IN DIEL PATTERNS OF CRUSTACEAN AND DIPTERAN ZOOPLANKTON EXPORT FROM A POLYMICTIC RESERVOIR
Past studies have demonstrated diel patterns of zooplankton export from lentic to lotic habitats, suggesting that under the right limnological and hydrological conditions, diel vertical migration of zooplankton may influence the composition of zooplankton exported to streams. Polymictic reservoirs are poorly stratified, regularly mix to depth, and are often very productive systems by virtue of relaxed nutrient limitation relative to dimictic reservoirs. In the study presented here, we investigate diel patterns of zooplankton export from a polymictic reservoir in New Jersey during three consecutive summer months. The composition of the exported zooplankton community varied significantly from month to month. Diel patterns were detected in zooplankton exports during one time period, but not during others. These results suggest that the occurrence of diel patterns in zooplankton export may be related to stratification regime and/or water residency time in the upstream lentic system.
Michael Grove (Co-Presenter/Co-Author), Rowan University, Grove@rowan.edu;
Courtney Richmond (Co-Presenter/Co-Author), Rowan University, Richmond@rowan.edu;
Nathan Ruhl (Primary Presenter/Author), Rowan University, Ruhl@rowan.edu;
Guy Leland (Co-Presenter/Co-Author), Rowan University, firstname.lastname@example.org;
Desiree' Haban (Co-Presenter/Co-Author), Rowan University, Haband2@students.rowan.edu;