Measurements of temperature, pH, oxygen concentration, H2S concentration, salinity, bacterial concentration, occurrence of micrometazoa, and distribution and abundance of ciliated protozoa were recorded during the summers of 1970 and 1971 in a tidal marsh at Adams Pt., Durham, New Hampshire. Numerous differences in ciliate distribution occurred between the upper (Spartina patens) marsh and the lower (Spartina alterniflora) marsh. Physical and biological parameters of a patens-panne pond were measured during a 2-week period involving the initial flushing of the pool by a session of full moon spring tides. Effects of a full moon spring tide cycle, a neap tide sycle, and a new moon spring tide cycle for one station in the lower marsh were evaluated. During 1970 and 1971, 103 species of ciliates, representing 41 families and 10 orders were identified, including 4 new species of ciliates, representing 41 families and 10 orders were identified, including 4 new species. Several instances of correlations between ciliate abundance and oxygen concentration, H2S concentration, and salinity were observed.

"May 1975." U.S. Environmental Protection Grant No. "Project Officer, Juan G. Gonzalez." Includes bibliographical references (pages 44-48).