Comparison of Aquatic Ecosystems in Two National Waterfowl Refuges
A study was made of the aquatic ecosystem of two national waterfowl refuges in Mississippi todeterrnine if there are significant environmental differences between the two refuges which might be correlated with evident differences in wood duck (Aix sponsa) productivity. Standing crops of seeds and plants used by waterfowl were measured. soil and water quality analyses were made, and phytoplankton concentrations were determined. Various aquatic plant communities were sampled to determine the abundance and species of macroinvertebrates. The gullet contents of 50 young wood ducks collected...
