IV 
W. ROBERT PATTERSON, MASSACHUSETTS INSTITUTE 
OF TECHNOLOGY 
The supply of: land. for reereation and open spaces 
is limited. The recreational use of these available lands 
must compete with-all- other possible uses. * * * In the 
long run, the people must indicate how they would like 
these lands to be used, by their preference in the market 
place or indirectly through the political process. This paper 
focuses upon the pricing policy in the establishment and 
management of parks and recreational areas * * * and 
looks specifically at the public or private good arguments 
relative to pricing. Page 
Part III. HUoinesdil problemsroeticoastalland use 4! _ 29/3 ae 161 
Introduction 
Overview 
A. Land“use estuarine interactions. 222" 3) 3222 22s eee 163 
BRADFORD BUTMAN, MASSACHUSETTS INSTITUTE OF 
TECHNOLOGY 
The coastal counties in the United States account for 
15 percent of the land area and support 33 percent of the 
population, four-fifths of it in urban areas. These urban 
areas constitute 15 percent of the estuarine zone. * * * 
With such dense population, estuarine regions have 
many use-conflicts. * * * The estuary is an extremely 
valuable, nonrenewable resource, and land uses which 
modify the estuarine environment should be strictly 
examined and controlled.. 
B. The ecological importance of a salt marsh_________________ 169 
B. W. TRIPP, MASSACHUSETTS INSTITUTE OF TECHNOLOGY 
A salt marsh is an integral part of the estuarine system 
which it borders. * * * [It] is of vital importance to man 
and this can be readily seen when commercially important 
organisms and: their relationships to salt marshes are 
studied. The coastal fishery has its beginnings in the 
marsh. * * * The salt marsh serves man in other ways 
besides supplying most of the seafood that is consumed 
by him. It serves as a buffer zone that protects the up- 
land against disastrous flooding and erosion. * * * If the 
marsh is destroyed, sediment normally deposited here 
becomes available for deposition in channels, harbors, and 
other navigable areas. 
C. The effect of sedimentation on primary production in the 
wet lands Was 
JOE MACILVAINE, WOODS HOLE OCEANOGRAPHIC 
INSTITUTION 
Man may alter the amount of sediment in the wetlands 
by a wide variety of actions. * * * Especially delete- 
rious to primary production are dredging and filling 
projects on submerged banks, tidal areas, and salt 
marshes, where the effects of such operations are pain- 
fully obvious. That such operations continue to be so 
common is testimony to the public’s ee as to the 
value of these wetlands. 
D. Some considerations of the effects of natural fa manmade 
anoxic conditions on the surrounding environment__-_-_-_-- 189 
