BOD

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

Glossary of Terms

The land and sea area bordering the shoreline. An entity of land and water affected by the biological and physical processes of both the sea and land and defined broadly for the purpose of managing the use of natural resources.

Conservation

The management of a natural resource for the protection, maintenance, rehabilitation, restoration, and/or enhancement of populations and ecosystems.

Offshore Breakwater

A breakwater built towards the seaward limit of the littoral zone, parallel (or nearly parallel) to the shore.

Survey, photogrammetric

A survey in which monuments are placed at points that have been determined photogrammetrically.

Mean Sea Level (MSL)

The average height of the surface of the sea for all stages of the tide over a 19-year period, usually determined from hourly height readings. Not necessarily equal to mean tide level. It is also the average water level that would exist in the absence of tides.

Siltation

The input of non-calcareous fine-grained sediments to the nearshore marine environment, or the settling out of fine-grained sediments on the sea floor.

The settling of fine-grained particles to the sea bottom.

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BOD