Algal Bloom

A sudden increase in the amount of marine algae (seaweed) often caused by high levels of phosphates, nitrates, and other nutrients in the nearshore area.

Glossary of Terms

Port

A place where vessels may discharge or receive cargo; it may be the entire harbour including its approaches and anchorages, or only the commercial part of a harbour where the quays, wharves, facilities for transfer of cargo, docks, and repair shops are situated. Protection may be provided by natural or artificial features.

BOD

Biochemical (or Biological) Oxygen Demand - high figures suggest pollution or eutrophication.

Marker, reference

A mark of permanent character close to a survey station, to which it is related by an accurately measured distance and azimuth (or bearing).

Aquaculture

The cultivation of aquatic organisms.

Runnel

A corrugation or trough formed in the foreshore or in the bottom just offshore by waves or tidal currents (see ridge and runnel).

Coastal Dunes

Dunes within the coastal upland, immediately landward of the active beach.

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Algal Bloom