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Hydrozoa of the Eurasian Arctic Seas 397 S THE ARCTIC SEAS CI imatology, Oceanography, Geology, and Biology Edited by Yvonne Herman IOm51 VAN NOSTRAND REINHOLD COMPANY ~ -----New York This work relates to Department of the Navy Grant NOOOI4-85- G-0252 issued by the Office of Naval Research. The United States Government has a royalty-free license throughout the world in all copyrightable material contained herein. Copyright © 1989 by Van Nostrand Reinhold Softcover reprint of the hardcover 1st edition 1989 Library of Congress Catalog Card Number 88-33800 ISBN-13 :978-1-4612-8022-4 e-ISBN-13: 978-1-4613-0677-1 DOI: 10.1007/978-1-4613-0677-1 All rights reserved. No part of this work covered by the copyright hereon may be reproduced or used in any form or by any means-graphic, electronic, or mechanical, including photocopying, recording, taping, or information storage and retrieval systems-without written permission of the publisher. Designed by Beehive Production Services Van Nostrand Reinhold 115 Fifth Avenue New York, New York 10003 Van Nostrand Reinhold (International) Limited 11 New Fetter Lane London EC4P 4EE, England Van Nostrand Reinhold 480 La Trobe Street Melbourne, Victoria 3000, Australia Nelson Canada 1120 Birchmount Road Scarborough, Ontario MIK 5G4, Canada 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Library of Congress Cataloging in Publication Data The Arctic Seas. Includes index. 1. Oceanography-Arctic Ocean. 2. Geology-ArctiC Ocean. 1. Herman, Yvonne. GC401.A76 1989 551.46'8 88-33800 ISBN-13: 978-1-4612-8022-4 For Anyu Contents Preface / vii Contributors / ix 1. The Present Climate of the Arctic Ocean and Possible Past and Future States 1 R. G. Barry 2. Arctic Ice-Ocean Dynamics 47 W. D. Hibler III 3. Chemical Oceanography of the Arctic Ocean 93 L. Anderson and D. Dyrssen 4. Polar Marine Ecosystem Evolution 115 M. J. Dunbar 5. Arctic Sea-Ice Biota 123 R. A. Horner 6. Primary Production, Chlorophyll, Light, and Nutrients Beneath the Arctic Sea Ice 147 O. G. N. Andersen 7. Arctic Ocean Phytoplankton 193 B. R. Heimdal 8. Foraminifera and Pteropoda Beneath the Arctic Sea Ice: New Distributions 223 Y. Herman and O. G. N. Andersen 9. Ecology of Arctic Ocean Cryopelagic Fauna 235 I. A. Mel'nikov 10. Evolution of Arctic Ecosystems During the Neogene Period 257 A. N. Golikov and o. A. Scarlato 11. Distributional Patterns of Echinoderms in the Eurasian Sector of the Arctic Ocean 281 N. A. Anisimova 12. Marine Bivalvia of the Arctic Ocean 303 V. V. Fedyakov and A. D. Naumov 13. Arctic Ocean Gastropod Prosobranchs 325 A. N. Golikov 14. Arctic Ocean Bryozoa 341 V. I. Gontar and N. V. Denisenko 15. Arctic Ocean Mysids (Crustacea, Mysidacea): Evolution, Composition, and Distribution 373 V. V. Petryashov v vi Contents 16. Hydrozoa of the Eurasian Arctic Seas 397 S. D. Stepanjants 17. Arctic Ocean Cumacea 431 S. V. Vassilenko 18. Quarternary Calcareous Nannofossil Biostratigraphy: The Eastern Arctic Ocean Record 445 C. Card 19. Arctic Ocean Radiolarians 461 S. B. Kruglikova 20. Diatoms in Arctic Shallow Seas Sediments 481 E. I. Polyakova 21. Ecology of Recent Foraminifera on the Canadian Continental Shelf of the Arctic Ocean 497 C. Vilks 22. Thorium and Uranium Isotopes in Arctic Sediments 571 B. L. K. Somayajulu, P. Sharma, and Y. Herman 23. Late Neogene Arctic Paleoceanography: Micropaleontology, Stable Isotopes, and Chronology 581 Y. Herman, f. K. Osmond, and B. L. K. Somayajulu 24. Sediment Composition and Sedimentary Processes in the Arctic Ocean 657 D. A. Darby, A. S. Naidu, T. C. Mowatt, and C. A. Jones 25. Late Cenozoic Stratigraphy and Paleoceanography of the Barents Sea 721 V. S. Zarkhidze and Yu. C. Samoilovich 26. The Last Glaciation of Eurasia 729 A. A. Velitchko, L. L. Isayeva, D. B. Oreshkin, and M. A. Faustova 27. Geological and Paleoclimatic Evolution of the Arctic During Late Cenozoic Time 759 I. D. Danilov 28. Organic Geochemistry of Barents Sea Sediments 761 A. N. Belyaeva, A. 1. Daniushevskaya, and E. A. Romankevich 29. Physiography and Bathymetry of the Arctic Ocean Seafloor 797 J. R. Weber 30. Tectonic History of the Arctic Region from the Ordovician Through the Cretaceous 829 L. P. Zonenshain and L. M. Napatov Index / 863 16: Hydrozoa of the Eurasian Arctic Seas S. D. Stepanjants INTRODUCTION and defense. The earliest Hydrozoa are be­ lieved to have evolved in the Precambrian Hydrozoans comprise one of the four as nonskeletal individual polyps. Skele­ classes in the phylum Cnidaria. Most ton-bearing fossils of Hydrozoa and jelly­ members of the class have bottom seden­ fish remains can be traced to the Cam­ tary (seldom pelagic) polypoid and pelagi­ brian. Recent Hydrozoa inhabit all seas cal medusoid stages of the life cycle. The and oceans, from cold polar to tropical wa­ polypoid generation may be an individual ters. They dwell at different depths from organism or a colony with the chitinous the littoral zone to the ocean deeps (rarely calcareous) skeleton. The polypoid (""'6.000 m). A number of Hydrozoa in­ produces the medusoid stage. The medu­ habit fresh and brackish waters. soid stage is not always represented by a free-swimming medusa, but rather by the medusoid, which remains attached to the PREVIOUS STUDIES colony and produces the sexual stage. Sometimes the typical medusoid or the The study of hydroids in the Eurasian Arc­ typical polypoid stage is absent. tic seas commenced in 1772, with Lepe­ The majority of Hydrozoa (nearly 1,600 chin's expedition to the White and Barents species) make up the subclass Hydroidea. seas. In 1780, his article on several species The subclass Siphonophora comprises of Sertularia was published, and Sertularia nearly 200 species. The siphonophores are (= Thuiaria) obsoleta was the first Arctic colonial, mainly pelagic organisms, with species whose type specimen was discov­ several kinds of polypoid and medusoid ered off Cape Svyatoi Nos (Barents Sea). zooids specialized for different functions The White Sea fauna was studied by Mer­ such as feeding, movement, reproduction, eschkowsky (1877), Wagner (1885), Sch­ later (1891), Birulja (1896, 1897a, 1898), and Note: This chapter has been reviewed, edited, and re­ Schidlowsky (1902). Also noteworthy are written by the Editor, Yvonne Herman. the following publications: M. Sars (1860, 397 398 S. D. Stepanjants 1861, 1863}, G. O. Sars (1873), Marenzeller Material collected by the Murmansk (1878), and D'Urban (1881). They deal Biological Station researchers on the R. V. with the Barents Sea hydroids. Studies by Alexandr Kovalevsky (1926) and other collec­ Thompson (1884) describe the Barents Sea tions of the station allowed Spassky to de­ and the Kara and East Siberian seas' fauna scribe 22 new hydroid species from the (Thompson, 1887). Publications by Kir­ Kola Bay and the southwestern part of the chenpauer (1884), Bergh (1886), Marktan­ Barents Sea (1929), thus raising the num­ ner-Turneretscher (1890), Bonnevie (1898, ber of species to 70 (Derjugin, 1915; Tanasi­ 1899), Levinsen (1893), Hartlaub (1900), jtchuk, 1927). Between 1920 and 1930, a Jiiderholm (1902), and Nordgaard (1904) large number of scientific expeditions were are devoted to the hydroid fauna in several carried out in the Arctic seas. It will suffice Arctic seas. We should also mention the to mention the most important ones, such reviews by Jaderholm (1908, 1909), the lat­ as the Kara Expedition on the research ves­ ter based on hydroids deposited in the sel Taimir (1921), the expedition to Novaya Swedish Royal Museum. Zemlya organized by the State Hydrologi­ Reviews by Broch (1910, 1916) on hy­ cal Institute (1923-1927), the expedition to droids collected on the R. V. Helgoland dur­ Novaya Zemlya of the Institute of Study ing the Danish Expedition Ingolf represent of the North on the research vessel Elding important contributions to our knowledge (1925, 1927), the Czech Expedition of the of hydroids of the Arctic seas. In 1897, the Institute on Study of the North in 1925 and study by Birulja on Hydrozoa, Polychaeta, 1927, the Kara Expedition of the Anglo­ and Crustacea collected in the Yenisei and Russian Cooperative Union (ARCOS) on Ob bays of the Kara Sea was published. the research vessels Malygin (1925) and This was followed by publications by Kni­ Sedov (1926), the expedition of the Yakut povitch (1901), Linko (1903, 1904), and Commission of the Academy of Sciences in Breitfus (1904) on hydroids, chiefly from the Laptev Sea on the research vessel Po­ the Barents Sea. A more comprehensive lamaya Zvesda (1927), the expedition of the study of the Barents and Kara seas fauna Arctic Institute on the R. V. Sedov (1929, (including hydroids) commenced in 1898 1930), the expedition of the State Hydro­ with the Murmansk Scientific Fishery Ex­ logical Institute to Wrangel Island on the pedition (Breitfus, 1906, 1908; Derjugin, R. V. Litke (1929), and the expedition of the 1905, 1906, 1915). Hydroids deposited at Arctic Institute on the R. V. Lomonosov the Zoological Museum of the Imperial (1931). Material collected in these expedi­ Academy of Sciences in St. Petersburg col­ tions have added new data to the list of lected in the above-mentioned expeditions hydroids of the Barents and Kara seas were used for studies of various regions (Vagin, 1934) and to the hydroids from the including the Arctic seas (Linko, 1911, Franz Josef Archipelago as well as from the 1912; Kudelin, 1914). Linko's (1912, 1913) Eurasian Arctic seas (Uschakov, 1936, studies dealing with the zooplankton of 1937). Uschakov (1925) made interesting Western Murmansk and the Arctic Ocean observations on seasonal variations of the mention 11 species of hydromedusae and fauna in the littoral zone of the Kola Bay. 2 species of siphonophores. Material col­ He was the first to observe such unique lected by the Russian expeditions in Spitz­ phenomena as the hydroids' ability to tol­ bergen (1899-1901), Murmansk Biological erate low temperatures and even ice.
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