The Knysna Estuary A review. The main hydrographic divisions.

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Presentation transcript:

The Knysna Estuary A review

The main hydrographic divisions

Flushing rate in days

Distribution of salinity with low river inflow

Salinity distribution during high flows and floods

Distribution of dissolved nitrogen salts

Distribution of soluble inorganic phosphorus salts

Suspended solids The data so far presented tells us that the estuary is not enriched (as yet) but it says nothing about the variation in light climate due to suspended solids borne in the flood waters. The next slide shows how critical this can be! The data so far presented tells us that the estuary is not enriched (as yet) but it says nothing about the variation in light climate due to suspended solids borne in the flood waters. The next slide shows how critical this can be!

The Bongani stream delta, Nov 2007

An eelgrass bed at high tide

An eelgrass bed partially collapsed at low tide – Kingfisher Creek

Collections of macroalgae from intertidal flats of Ashmead each is from 1 sq metre