IV-290 



SECTION 3. TRENDS IN SELECTED ACTIVITIES ASSOCIATED 

 WITH THE ESTUARINE ZONE 



The discussions in the preceding sections give some indication of 

 the pressures placed on the estuarine resources in recent years 

 and those that may be expected in the future. This section presents 

 the discernible trends of some specific activities associated with 

 the estuaries. Where possible, projections are made of the likely 

 results of these trends. 



For convenience of presentation and examination, different 

 activities are discussed separately; however, it must be emphasized 

 that these activities are closely interrelated and often place 

 additive and conflicting demands on the estuarine environment. In 

 short, because these activities all take place in the limited area 

 of the landwater interface, and affect the land frontage, water, 

 and biota of the zone, problems of management are inescapable. 



The activities selected for detailed attention are those which have 

 a particularly close relationship to the resources that occur in 

 the estuaries, open coastline, and near-shore waters. Other activi- 

 ties that are found in the estuarine zone, but are not directly 

 tied to the natural resources existing there, are given less 

 attention. The concepts of primary, secondary, and marginal activ- 

 ities (Figure IV. 3.1) are used with these definitions: 



