APPENDIX G 



GLOSSARY 



armor rock - Heavy rock, usually 

 weighing 500 pounds or more, 

 used to protect a coastal 

 structure or shore from heavy 

 wave attack. 



associations - In ecology, a 

 subimit of community organi- 

 zation identified by its 

 major organisms . 



azimuth - In this case, the arc 

 of the horizon measured in 

 degrees, clockwise from 

 north to the point toward 

 which the diver is swimming. 



bathymetry - The measurement 

 of depths of water in oceans, 

 seas, and lakes, also infor- 

 mation derived from such 

 measurements . 



benthic - Pertaining to the 

 subaquatic bottom. 



biomass - The amount of living 

 material in a unit area for 

 a unit time. 



biota - The living part of a 

 system; flora and fauna. 



caudal peduncle - The con- 

 stricted part of a fish 

 immediately ahead of the tail 

 fin. 



climatic community - a community 

 that is in equilibrium with the 

 general climate. 



climax - The final stage in 

 community succession. 



complex - An assemblage of inter- 

 connected or interacting parts. 



dendogram - The type of diagram 

 commonly referred to as a 

 "family tree" designed to show 

 postulated relationships between 

 taxa. 



depauperation - Falling short of 

 usual development or size. 



ecosystem - The living organisms 

 and the nonliving environment 

 interacting in a given area. 



ectoprocts - A bryozoan (moss 



animal) of the group Ectoprocta. 



epibiota - Life forms attached to 

 or living upon surfaces. 



F test - A method used to test 

 the hypothesis that the means 

 in several classes statistically 

 are similar. 



genus - A unit of biological 

 classification (taxa) which 

 includes one or several species 

 that share certain fundamental 

 characteristics, supposedly by 

 common evolutionary descent. 



gill net - A single-webbed net 

 with meshes sized to catch in 

 the gills of the fish being 

 sought. 



in fauna - The animals that live 

 in the bottom sediment. 



intertidal zone - The zone 

 bounded by the high and low 

 water extremes of the tide. 



macrobiota - Large forms of life 

 visible to the naked eye. 



macrophytic - Refers to large 

 aquatic plants, e.g., kelps. 



nonparametric test - A statistical 

 test that is not concerned with 

 the specific parameters, but 

 rather with the distribution of 

 the variates. Also referred to 

 as distribution free. See 

 parameter. 



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