Conseil Permanent International pour l'Exploration de la Mer CHARLOTTENLUND SLOT - DANEMARK ANNALES BIOLOGIQUES VOLUME NO. 23 REDIGE PAR H. T AMBS-L YCHE 1966 En Commission chez ANDR. FRED. H0ST & FILS COPENHAGUE Prix: kr. 55.00 Janvier !968 TABLE OF CONTENTS Page Preface, by H. TAMBS-LYCHE 7 Part I. HYDROGRAPHY Distant Northern Seas Some regularities in the distribution of phosphates and oxygen in the Davis Strait summer and winter 1965-V. S. ZLOBIN, M. F. PERLYUK, N. G. SAPRONETSKAYA . I3 Danish hydrographical observations in West Greenland waters 1966 P.M. HANSEN . 20 The Oceanic Polar front in the waters off the East Coast of Greenland in August 1966- G. DIETRICH, J. M. GrESKES . 20 Hydrographic conditions in Icelandic waters in June 1966- S. A. MALMBERG . 23 Water temperature of the Norwegian Current in 1966 - V. V. PENIN, L. R. SOLONITSINA . 27 Thermal conditions in the Barents Sea in 1966- L. I. BoROVAYA 29 Near Northern Seas . 33 Surface temperature and salinity observations at English sampling stations during 1966- D. J. ELLETT, S. R. JONES, G. READ 33 Hydrographical conditions in the North Sea in March 1966 and 1967- E. MITTELSTAEDT . 49 Polish hydrographical observations in the North Sea in summer and autumn 1966- J. FILARSKI . 60 Hydrography of the south-eastern North Sea 1966, Danish observations -H. THOMSEN. 65 Hydrography of the Skagerak and the Kattegat area 1966, Swedish observations- A. SVANSSON. 65 Hydrography of the Kattegat area 1966, Danish observations - H. THOMSEN . 67 Baltic-Belt Seas . 68 Danish observations in the Great Belt and the Baltic 1966 - H. THOM- SEN . 68 Polish hydrographical observations in the southern Baltic in 1966 - A. GLOWINSKA . 68 Observations at Swedish lightships and the central Baltic 1966 - S. H. FoNsEuus . 74 Some peculiarities in the oceanographical regime of the Baltic in 1966 - M. V. KALEIS, N. B. ALEXANDROVSKAYA, E. A. YULA . 78 Page Part II. PLANKTON AND BENTHOS Distant Northern Seas The continuous plankton recorder survey: plankton in the Irminger Sea region during Ig66 - R. S. GLOVER, G. A. RoBINSON . 84 Plankton investigations from Aberdeen Ig66 in the Distant Northern Seas area- J. H. FRASER . 85 Sebastes in continuous plankton records in Ig66- G. T. D. HENDERSON 85 Near Northern Seas . 86 The continuous plankton recorder survey. Plankton around the British Isles during Ig66- R. S. GLOVER, G. A. RoBINSON . 86 Investigations from Aberdeen in Ig66- D. D. SEATON, J. H. FRASER go Chlorophyll a and zooplankton standing crop J. A. ADAMS, I. E. BAIRD 92 Baltic-Belt Seas . 94 Investigations on zooplankton in the western part of the Gdansk Bay - K. SruDZINSKI . 94 Atlantic Area . 96 Scottish plankton investigations in the Atlantic area in Ig66 - j. H. FRASER . 96 Part III. THE FISH Gadoid Fish Cod g8 Danish investigations on cod in West Greenland waters Ig66 - P.M. HANSEN . g8 The spawning stock of Icelandic cod in Ig66- G. P. NrzOVTSEV . 102 Scottish investigations of the North Sea cod stock in Ig66 - D. F. S. RAITT . I04 German investigations on the stock of cod in the western Baltic in Ig66 - R. KANDLER . I05 Stock condition and distribution of cod in the eastern Baltic in Ig66 - I. A. LABLAIKA, D. V. UzARS . Io6 Haddock ............ Io8 Soviet investigations on young haddock of the 0, I, II and III age-groups in the Barents Sea- Z. P. BARANOVA . I08 Scottish investigations on the Faroe stock of haddock Ig66- R. JONES, D. G. CROSS . IIO Scottish investigations on the west coast stock of haddock, Ig66- R. JoNES, D. G. CRoss ............... III Scottish investigations on the North Sea stock of haddock, Ig66- R. jONES, D. G. CROSS ............... II2 German investigations on the haddock of the North Sea in Ig66 - G. WAGNER .................... II3 -s- P2ge Whiting ...................... rq Scottish investigations on the west coast stock of whiting, rg66- J. HISLOP, D. G. CROSS . rq Scottish investigations on the North Sea stock of whiting, rg66 - J. HISLOP, D. G. CROSS . ..... rr6 German investigations on the whiting of the North Sea in rg66 - G. WAGNER .................... rrS German investigations on whiting in the western Baltic in rg66 - R. KANDLER . rr8 Blue Whiting . rrg Results of Soviet investigations on ;l1icromesisti%s poutasso% m the North-east Atlantic in rg66- V. K. ZILANOV .. rrg Herring . 122 Introduction, by G. HEMPEL . 122 The Icelandic herring fishery in rg66 - J. jAKOBSSON 124 Soviet investigations on the age composition of the White Sea herring in the north-western White Sea in rg65-rg66- B. M. TAMBOVTSEV 129 Norwegian small and fat herring investigations in rg66- 0. DRAGEST.iND 130 Norwegian adult herring fisheries rg66 0. DRAGESUND . 132 Norwegian herring tagging experiments and tagging returns- 0. DRA- GESUND, S. HARALDSVIK . 136 Survey of the German commercial herring fisheries in rg66 K. ScHu- BERT . 138 The Norwegian herring fisheries in the North Sea and Skagerak rg66 - S. HARALDSVIK . I43 Scottish herring fisheries rg66- G. McPHERSON, A. SAVILLE 149 Scottish fisheries on adolescent herring, rg66- A. SAVILLE . 159 Herring trawling off the west coast of Scotland rg66 - I. G. BAXTER r6o The English herring fisheries in rg66 - R. .J. WooD, W. G. PARNELL 163 0-group herring on the English east coast- R. J. WooD . 167 Growth data for herring of the Southern Bight, derived by back-calcu- lation on scales - T. D. ILES . r68 The German oil-herring fishery in rg66- P. F. MEYER-WAARDEN . IJI The herring fisheries of the Netherlands in rg66 - J. J. ZIJLSTRA, K. H. PosTuMA . r7r The Swedish herring fisheries in the North Sea, Skagerak and Kattegat in rg66 - H. HoGLUND . 173 The Polish herring fishery in the southern Baltic from 1957 to rg66 - J. POPIEL, K. STRZYZEWSKA . I75 Herring investigations in the north-eastern Baltic in rg65-rg66 - L. RANNAK, E. 0JAVEER . I79 Baltic herring in the seas around Finland in rg66 - VEIKKO SJOBLOM r8r Sardine . ..... r85 Sprat The English sprat fisheries- P. 0. JoHNSON r85 -6- Page Scombriform Fish 192 Mackerel Norwegian mackerel investigations in 1966- A. REVHEIM 192 English mackerel tagging in 1966- G. C. BoLSTER 195 Netherlands mackerel fishery in the North Sea in 1966- J. J. ZIJLSTRA, K. H. PoSTUMA . 195 Salmon and Trout . 198 Danish Research on Atlantic salmon in the West Greenland waters 1966 - P. M. HANSEN . 198 British investigations on salmon and sea trout 1966- A. SwAn\ . 198 German investigations on salmon and trout 1966- F. THUROW . 199 Status of the Baltic salmon stocks in the Latvian rivers 1956-1966 - B. R. EVTUHOV A . 202 Other Fishes . 204 Danish observations on halibut, catfish, capelin, lumpsucker and redfish in West Greenland waters 1966- P.M. HANSEN . 204 Soviet investigations on young redfish (S. mentella and S. marinus) in the Barents Sea in 1966/67 - T. S. BERGER . 204 The age composition of the plaice stocks exploited by the Dutch fishing fleet in 1966- J. F. DE VEEN . 206 The age composition of the Dutch sole landings in 1966- J. F. DE VEEX 208 Quantitative fishing of flatfish with the standard trawl in the Kiel Bay 1966 - R. KANDLER . 209 Rare Fishes 211 Rare fishes recorded by the Marine Research Institute in Reykjavik during 1966- G. JoNSSON . 2rr Scottish records of rare fishes- 1964- B. B. RAE, S. F. PIRIE 2rr Scottish records of rare fishes - 1966 - B. B. RAE, S. F. PIRIE 212 English observations on rare fishes in 1966- R. W. BLACKER . 212 Non-indigenous demersal species caught in the western Baltic 1966 R. KANDLER . 213 Shellfish 214 Crustacea Danish observations on crustacea in West Greenland waters 1966 - P. M. HANSEN . 214 APPENDIX Report on the joint meeting on Atlanto-Scandian herring distribution, held at Akureyri 12.-14. June 1966 . 215 -7- PREFACE There are very few changes in the arrangement of contributions to this volume as compared with the last one. As mentioned in the preface to Volume 22, however, a rearrangement following the Council's new committee system has been under consideration for some time. In October 1967, the Council passed the following resolution concerning the Annales biologiques: "Area chairmen's summaries should in the future not be included, but experts - not necessarily chairmen - should be invited to write summaries on herring and cod." In accordance with this, there are no area chairmen's summaries in the present volume. A summary on demersal fish in the distant northern seas, which had already been written by professor G. V. NrKOLSKY, has been incorporated in the comments on the following pages, and is hereby gratefully acknowledged. As in later years, professor G. HEMPEL has written a summary of the contributions to the herring chapter. He could take into consideration some contributions presented to the Statutory Meeting of the Council in October 1967, which could not be included in the present volume. They will eventually be printed in Volume 24. It is regretted that it has not been possible this year to include a summary on cod. By joined efforts of all concerned, it has been possible to speed up the production of this volume quite considerably, and possibilities are now available for a further shortening of the production time for the next volume. This has inevitably caused some inconvenience for contributors, staff and printers, but it is believed that the result justifies the effort, and the editor wishes to thank all concerned. A nnales biologiques and Statistical News Letters are to some extent complementary, and wherever possible, references have been inserted in the text of the present volume. Because of the earlier appearance of this volume, however, this has not always been possible, and general reference is therefore given to the following numbers of Statistical News Letters (issued, in print, or under preparation), where basic and detailed statistical data relevant to the information presented in this volume will be found: No.