Effects of re-establishing tidal connections in two impounded subtropical marshes on fishes and physical conditions

Abstract

The effects of reestablishing a marsh-lagoon connection through culverts upon the fish populations and the physical conditions of two impounded sub-tropical marshes are examined. After installation of the culverts, mean salinities in the two marshes increased from approximately 13 ppt to 25 ppt and pH from 7.1 to 7.3. The abundance of marsh resident species, particularly those that forage in the upper marsh, decreased significantly after connection, but utilization of the marshes by transient species increased by almost two orders of magnitude. Modification of the marsh hydroperiod seems to be most important in influencing the changes in the patterns of fish utilization, abundance, and diversity observed at the study sites.

DOI: 10.1007/BF03160821

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Cite this paper

@article{Rey2009EffectsOR, title={Effects of re-establishing tidal connections in two impounded subtropical marshes on fishes and physical conditions}, author={Jorge Rey Rey and John A. Shaffer and Derek M. Tremain and Roy A. Crossman and Tim Kain}, journal={Wetlands}, year={2009}, volume={10}, pages={27-45} }