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

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

HARRISON, P. G., AND K. H. MANN

Detritus formation from eelgrass (Zostera marina L.) : The relative effects of fragmentation, leaching, and decay

FLINT, R. WARREN, AND CHARLES R. GOLDMAN

The effects of a benthic grazer on the primary productivity of the littoral zone of Lake Tahoe

GRIFFITHS, MARY, AND W. T. EDMONDSON

Burial of oscillaxanthin in the sediment of Lake Washington

VANDERBORGHT, JEAN-PIERRE, AND GILLES BILLEN

Vertical distribution of nitrate concentration in interstitial water of marine sediments with nitrification and denitrification

BARNES, R. O., K. K. BERTINE, AND E. D. GOLDBERG

N₂ : Ar, nitrification and denitrification in southern California borderland basin sediments

PYTKOWICZ, R. M.

Activity coefficients of bicarbonates and carbonates in seawater

TYLER, JOHN E.

The in situ quantum efficiency of natural phytoplankton populations

EPPLEY, RICHARD W., AND JONATHAN H. SHARP

Photosynthetic measurements in thecentral North Pacific: The dark loss of carbon in 24-h incubations

KROOPNICK, PETER M.

Respiration, photosynthesis, and oxygen isotope fractionation in oceanic surface water

LASENBY, DAVID C.

Development of oxygen deficits in 14 southern Ontario lakes

ANDERSON, O. ROGER

A possible origin of some olive-green cells in aphotic marine environments

COWGILL, U. M., AND C. W. BURNS

Differences in chemical composition between two species of Daphnia and some freshwater algae cultured in the laboratory

CAMMEN, LEON M.

Accumulation rate and turnover time of organic carbon in a salt marsh sediment

GRAVITZ, NORMAN, AND LINDA GLEYE

A photochemical side reaction that interferes with the phenol hypochlorite assay for ammonia

THEODÓRSSON, PÁLL, AND JÓN ÖRN BJARNASON

The acid-bubbling method for primary productivity measurements modified and tested

DAVEY, EARL W., AND ALBERT E. SOPER

Apparatus for the in situ concentration of trace metals from seawater

HØJERSLEV, NIELS

A spectral light absorption meter for measurements in the sea

CALDWELL, DOUGLAS R., STEVE D. WILCOX, AND MARK MATSLER

A freely falling probe for small-scale temperature gradients

REDFIELD, ALFRED C.

A piston corer for peat

HAMNER, WILLIAM M.

Underwater observations of blue-water plankton: Logistics,techniques, and safety procedures for divers at sea

VERDUIN, JACOB

Rate of carbon dioxide transport across air-water boundaries in lakes

MEGARD, ROBERT O.

Reply to comment by J. Verduin

SCHINDLER, D. W.

Factors affecting gas exchange in natural waters

Announcement

F. T. MANHEIM

Suspended solids in water (R. J. Gibbs [ed.] )

THOMAS B. KELLOGG

Marine geology and oceanography of the Arctic Seas (Y. Herman [ed.] )

G. T. CSANADY

Ocean circulation physics ( M. E. Stern)

JOHN M. HUNT

Natural gases in marine sediments ( I. R. Kaplan [ed.] )

R. Y. STANIER

Microbial seascapes (J. M. Sieburth)

ROBERT G. WETZEL

Das Schilfrohr. Phragmites communis Trinius ( L. Rodewald-Rudescu )

ALEXANDER J. HORNE

Limnology of shallow waters (J. Salanki and J. E. Ponyi [eds.])

RAYMOND G. STROSS

Biological clocks in marine organisms (J. D. Palmer)

Books Received

Authors and titles in volume 20