5.4. Kelp Beds

Seaweeds are often found in or near the estuary. The large seaweeds known as Kelps are particularly important. Kelp beds are really underwater "forests" that grow rapidly, creating shelter for many fish. Their growth and decay creates a rich food source for many fish and shellfish (lobster, mussels).

Kelp beds are dense along parts of the Atlantic coast of Nova Scotia. Lobster populations have a direct relationship to the health of kelp beds. The sea urchin feeds on kelp and can cause beds to decline. However, lobsters eat sea urchins so if lobster populations are kept in balance, this will limit the damage caused by sea urchins.

Rocky intertidal

Along the shore there is a zone covered with rockweeds. This area is very high in primary productivity and is home to bacteria and snail when the tide is out and full of juvenile fish when the tide lets them back in to feed.

These areas are often buried or reduced in size by coastal developments. This reduces the juvenile habitat for many species of marine fish which are food for larger fish such as sea trout.