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Aspects of the hydrology and plant ecology of two normally-closed estuaries in the Bremer Bay Region, on the south coast of Western Australia.

Authors:

R A Congdon ,

A J McComb

Abstract

The sand bars at the mouths of Wellstead Estuary and Gordon Inlet do not break every year and the estuaries become hypersaline. We record here the results of field trips to these estuaries in November 1974 and August 1977. Salinities rose between the two visits due to several years of below-average rainfall. Salinities higher than 100 ppt were recorded in Gordon Inlet, and a groundwater salinity profile across the sand bar showed that salinity decreased towards the ocean. Increasing salinity resulted in the disappearance of the aquatic macrophytes Ruppia megacarpa, Lamprothamnium papulosum and Polyphysa peniculus from this estuary. The vegetation of the estuaries is described and some biomass estimates presented.
How to Cite: Congdon, R.A. and McComb, A.J., 2009. Aspects of the hydrology and plant ecology of two normally-closed estuaries in the Bremer Bay Region, on the south coast of Western Australia.. Wetlands Australia, 6(1), pp.23–32. DOI: http://doi.org/10.31646/wa.89
Published on 13 Oct 2009.
Peer Reviewed

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