544 



SUBJECT INDEX 



Erken Lake (Sweden) 



primary production measurements, 159 

 Esterson field instruments, 114 

 Estuaries, 306 



advections of salt in, 309 



circulation in, 60 ff, 307 ff 



definition and extensions of the term, 306 



dynamics of, 317 ff 



eddy stresses in, 310 



fjord type, 313 ff 



flushing in, 316 ff 



highly stratified, frictionless and non- 

 tidal models, 308 ff 



interfacial waves between fresh and salt 

 water, 308 



kinematics of, 322 ff 



moderately stratified, 309 ff 



potential energy in, 310 



pressure gradients in, 310 



salinity gradient in, 309 



sequence variations, 314 ff 



stratification, 307 



tidal effects in, 309 ff 



turbulence in, 311 



vertically homogeneous, 312 ff 

 Euglena gracilis, 221 ff, 224 

 Euphausia, 291 ff, 386 ff, 393 ff, 398 ff, 403 

 Euphotic zone, 348 ff, 372 



estuaries and embayments, in, 375 

 E. W. Scripps vessel and cruise, 253, 516 

 Exchange coefficient of oxygen, 55 

 Excretion of organic nitrogen, 178 ff 

 Expatriate plankton forms, 382 

 Extinction coefficient, 372, 373 



Faeroe Islands waters, productivity, 364, 



372 

 Fatty acids in sea-water, 174 

 Fecundity of fish, 472, 479 

 Ferromanganese minerals, build-up rates, 



17 

 Fertility of the oceans (II), 129: see also 

 under Sea-water 

 limiting factors, 200 ff 

 Figure of the Earth by GEON-TRANSIT 



comparisons, 336 ff 

 Fish behavior observations from diving 



chamber, 499 

 Fishery dynamics, their analysis and inter- 

 pretation, 464 

 age composition, 464, 474 

 analytical models, 469, 479 ff 

 asymptotic weight of ageing fish, 467 

 Bertalanffy's growth equation, 468 ff 



Fishery dynamics — continued 



Beverton-Holt approach, 465, 480 ff 

 biomass in exploitable phase, 464, 479 

 catch in equilibrium with fishing rate, 



466 

 catch per recruit, 469, 481 

 catch per unit effort, 468, 476 ff 

 coefficient of natural increase, 475, 



481 

 effects of fishing on exploited fish popu- 

 lations, 464 ff 

 environment affecting survival, 472, 479 

 equilibrium, 464, 475 ff, 478 

 eumetric fishing, 469 

 fishing effort related to fish mortality, 



468, 476, 480 

 fluctuation of recruitment, 472 

 general model, 465 

 growth pattern of fish, 467 

 increments balancing losses, 464 

 logistic or sigmoid (Verhulst-Pearl) law 



of population growth, 465 ff, 475 ff 

 long-term dynamics, 472 

 maximum catch related to maximum 



population, 481 

 mortality coefficient and rates, 468, 471, 



476 

 natural increase rate, 478 

 population density-dependent effects, 



470 ff, 478 

 recruitment dependence on density, 472 

 recruitment relations and fluctuations, 



473 ff, 481 

 Schaefer approach, 466, 475 ff, 478 ff 

 selectivity of fishing gear, 469 

 self-regulation of population, 472 

 stability, requirement for, 473 

 steady state, 465, 475 

 tagging experiments, 468, 477 

 transient states, 479 

 Fission products 



from nuclear weapons tests, 78 

 nuclidic differentiation in planktonic 

 organisms, 83 

 Fjarlie water-sampling bottle, 124 

 Fjords 



estuarine type, 313 ff 



nonconservative elements accumulation, 

 62 

 Fladen Ground, 362 ff 

 plant production, 446 

 primary production, 363 

 Florida, marine turtle grass Thalassia, 376 

 Fluorimetric technique, 118 



