Table of Contents, Vol. 20 (6), 1975

Articles

HAMNER, W. M., L. P. MADIN, A. L. ALLDREDGE, R. W. GILMER, AND P. P. HAMNER
Underwater observations of gelatinous zooplankton: Sampling problems, feeding biology, and behavior
907-917
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RICHMAN, SUMNER, Y. LOYA, AND LAWRENCE B. SLOBODKIN
The rate of mucus production by corals and its assimilation by the coral reef copepod Acartia negligens
918-923
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HARRISON, P. G., AND K. H. MANN
Detritus formation from eelgrass (Zostera marina L.) : The relative effects of fragmentation, leaching, and decay
924-934
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FLINT, R. WARREN, AND CHARLES R. GOLDMAN
The effects of a benthic grazer on the primary productivity of the littoral zone of Lake Tahoe
935-944
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GRIFFITHS, MARY, AND W. T. EDMONDSON
Burial of oscillaxanthin in the sediment of Lake Washington
945-952
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VANDERBORGHT, JEAN-PIERRE, AND GILLES BILLEN
Vertical distribution of nitrate concentration in interstitial water of marine sediments with nitrification and denitrification
953-961
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BARNES, R. O., K. K. BERTINE, AND E. D. GOLDBERG
N2 : Ar, nitrification and denitrification in southern California borderland basin sediments
962-970
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PYTKOWICZ, R. M.
Activity coefficients of bicarbonates and carbonates in seawater
971-975
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TYLER, JOHN E.
The in situ quantum efficiency of natural phytoplankton populations
976-980
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EPPLEY, RICHARD W., AND JONATHAN H. SHARP
Photosynthetic measurements in thecentral North Pacific: The dark loss of carbon in 24-h incubations
981-987
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KROOPNICK, PETER M.
Respiration, photosynthesis, and oxygen isotope fractionation in oceanic surface water
981-988
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LASENBY, DAVID C.
Development of oxygen deficits in 14 southern Ontario lakes
993-999
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Notes

ANDERSON, O. ROGER
A possible origin of some olive-green cells in aphotic marine environments
1000-1004
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COWGILL, U. M., AND C. W. BURNS
Differences in chemical composition between two species of Daphnia and some freshwater algae cultured in the laboratory
1005-1011
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CAMMEN, LEON M.
Accumulation rate and turnover time of organic carbon in a salt marsh sediment
1012-1015
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GRAVITZ, NORMAN, AND LINDA GLEYE
A photochemical side reaction that interferes with the phenol hypochlorite assay for ammonia
1015-1017
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THEODÓRSSON, PÁLL, AND JÓN ÖRN BJARNASON
The acid-bubbling method for primary productivity measurements modified and tested
1018-1019
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DAVEY, EARL W., AND ALBERT E. SOPER
Apparatus for the in situ concentration of trace metals from seawater
1019-1023
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HØJERSLEV, NIELS
A spectral light absorption meter for measurements in the sea
1024-1034
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CALDWELL, DOUGLAS R., STEVE D. WILCOX, AND MARK MATSLER
A freely falling probe for small-scale temperature gradients
1034-1042
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REDFIELD, ALFRED C.
A piston corer for peat
1042-1045
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HAMNER, WILLIAM M.
Underwater observations of blue-water plankton: Logistics,techniques, and safety procedures for divers at sea
1045-1051
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Comments

VERDUIN, JACOB
Rate of carbon dioxide transport across air-water boundaries in lakes
1052-1053
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MEGARD, ROBERT O.
Reply to comment by J. Verduin
1053
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SCHINDLER, D. W.
Factors affecting gas exchange in natural waters
1053-1055
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Announcement
1055
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Book Reviews

F. T. MANHEIM
Suspended solids in water (R. J. Gibbs [ed.] )
1056-1057
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THOMAS B. KELLOGG
Marine geology and oceanography of the Arctic Seas (Y. Herman [ed.] )
1057
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G. T. CSANADY
Ocean circulation physics ( M. E. Stern)
1058
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JOHN M. HUNT
Natural gases in marine sediments ( I. R. Kaplan [ed.] )
1058-1059
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R. Y. STANIER
Microbial seascapes (J. M. Sieburth)
1059
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ROBERT G. WETZEL
Das Schilfrohr. Phragmites communis Trinius ( L. Rodewald-Rudescu )
1059-1060
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ALEXANDER J. HORNE
Limnology of shallow waters (J. Salanki and J. E. Ponyi [eds.])
1060-1061
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RAYMOND G. STROSS
Biological clocks in marine organisms (J. D. Palmer)
1061-1062
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Books Received
1062
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Authors and titles in volume 20
1064-1070
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