Prairie pothole marshes as traps for nitrogen and phosphorous in agricultural runoff

van der Valk, Arnold; Baker, J. L.; Beer, C. E.

Prairie pothole marshes as traps for nitrogen and phosphorous in agricultural runoff

File

1981_vanderValk_PrairiePothole0001.pdf (637.28 KB)

Date

1981

Authors

van der Valk, Arnold

Baker, J. L.

van der Valk, Arnold

Beer, C. E.

Authors

Person

van der Valk, Arnold

Professor Emeritus

Organizational Units

Organizational Unit

Agricultural and Biosystems Engineering

Department

Agricultural and Biosystems EngineeringBotany

Abstract

Water quality of drainage influents and the lone effluent at Eagle Lake marsh, Iowa, was studied for 4 years (1976-1979). Because of drought conditions, there was no effluent from the marsh in 1976, 1977, or 1978. In 1979, the marsh was effective at removing inorganic N, especially N03-N, from runoff water passing through. It had little impact on levels of inorganic-P, total-P, and Kjeldahl-N; it was a net exporter of soluble organic carbon.

Comments

This proceeding is from Davis, C. B., J. L. Baker, A. G. van der Valk, and C. E. Beer. 1981. Prairie pothole marshes as traps for nitrogen and phosphorous in agricultural runoff. pp. 153-163. Richardson, B. (Ed.). Selected Proceedings of the Midwest Conference on Wetland Values and Management. Freshwater Society, Navarre, MN. Posted with permission.