prism (tidal) The volume defined by the difference between ebb and flood 



tides. 



productivity (production rate) The rate at which energy is stored in the form of organic matter 



by green plants (primary productivity) and by animals (second- 

 ary productivity). 



progradation Seaward buildup of a beach, delta, or fen by nearshore deposi- 



tion of sediments transported by a river, by accumulation of 

 material thrown up by waves, or by material moved by longshore 

 drifting. 



Q 



qs 



Recent 



relict 



riparian 



riverine 

 rookery 

 Rp 



Areal water load. 

 R 



Epoch of geologic time within which modern man appeared, starting 



about 11,000 years ago. 



A persistent, isolated remnant of a once-abundant species or geo- 



morphic feature. 



Relating to, or living, on the bank of a natural watercourse or 



sometimes of a lake or tidewater. 



Of, or pertaining to, a river. 



Bird nesting site. 



Phosphorus retention. 



sedge 

 shoal 



species richness 

 standing stock 



strandline 

 subaerial 



subsidence 

 sustained yield 



synergistically (adv) 



synoptic 



system 



A member of the grass family that provides a food source for 

 waterfowl and furbearers. 



A submerged elevation rising from the bed of a shallow body of 

 water and consisting of, or covered by, unconsolidated material. 

 May be exposed at low water. 



The number of different kinds of species in a habitat. 

 The numbers or biomass of a population available for exploita- 

 tion at any given time. 



The level at which a body of standing water meets the land. 

 Pertaining to conditions and processes occuring 

 on or adjacent to the earth's surface. 

 A sinking down of a part of the earth's crust. 

 The maximum rate of harvest of a living resource that can be 

 maintained without diminishing the supply of the resource. 

 Pertaining to the interaction of two or more processes so that the 

 response of the whole is greater than the sum of the individual 

 processes; or so that the response of the whole is not predictable 

 by summation of the individual processes. 



Meteorological data obtained simultaneously and presented so as 

 to give a comprehensive picture of the state of the atmosphere. 

 A method of organizing entities into a larger aggregate. 



tectonic 



Dealing with regional structural and deformational features of 

 the earth's crust including the mutual relations, origin, and his- 

 torical evolution of the features. 



XXI 



