Erin Clark

Correlation of Odonate Diversity with Lotic Habitat Characteristics
DivisionSciences
DepartmentBiology
Year2002
AdvisorTom Schultz

A study was conducted on dragonfly larvae communities in nine ponds around Licking County, Ohio.  Data from two years of collection were analyzed with respect to physical characteristics and habitat heterogeneity of the ponds, and the presence or absence of fish.   There was no correlation between pond physical characteristics and the larvae communities. A positive trend was found between habitat heterogeneity and larvae species richness.  Three ponds experienced disturbance either through eutrophication or drought.  The pond that experienced eutrophication showed an increase in species richness between the years.  In a cluster analysis the two temporal ponds were most similar in species composition indicating species that are adapted to the pond drying up in late summer.  There was no relationship between the presence or absence of fish and the species found at the pond.  The effect of fish predation on the larvae may be moderated by the habitat heterogeneity.