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Estuaries

Estuaries are transition zones between rivers and oceans. There are no two identical estuary. Some are small while other stretch over a very large area. An estuary is in perpetual change and has a tendency to accumulate sediments. The accumulation of sediments comes from rivers, brooks and marshes located inland as well as from salt marshes and dunes located at the opening of the estuary.
 
 
During the summer months, biological activity is intense in estuaries. Tides, currents and wind carry nutritive substance on the surface of the water. The abundance of nitritive substances as well as shallow and warm water are ideal for all kinds of activities. Certain invertebrates, birds and fish can profit from these characteristics. Estuaries and other coastal ecosystems are zones of high productivity and they offer quality habitat to many animal species.
 
Estuaries have a great economic importance. Many sustain a considerable commercial fishery not to mention sport fishing, wildlife activities and aquaculture. Finally, estuaries also serve as navigation routes.
 
Kouchibouguac River Estuary