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Author: Yuri Mikhalev Publisher: Springer Nature ISBN: 3030292525 Category : Science Languages : en Pages : 382
Book Description
Based on actual data of Soviet whaling, and reliable methodologies that existed at the time when this monograph was written, it examines the distribution and migration patterns of whales of the Southern Ocean. It defines distinct populations on the basis of phenes, as well as whale breeding zones, which are located in the adjacent to the Southern Ocean waters at lower latitudes. The book records the presence of a new species of killer whale in the Southern Ocean - Orcinus nana. Prenatal growth patterns, pregnancy and lactation duration, mean sizes of new-born whales are determined. Methods for the graphic recording of registering structures are described, and an original method for their decoding is proposed to determine animal age. The age of sexual and physical maturity, life expectancy is determined. Earlier unknown “pair formations” on the lower jaw of baleen whales and sperm whales are described, together with their macro, histological and electronic microscopic structure. The impact of the extermination of whales on the Southern Ocean ecosystem is examined, recommendations for control of the current state of whale populations are given, and perspectives of whale population recovery are estimated. Regions that could be used as testing areas for whale registration method are defined. The book is intended for biologist-cytologists, ecologists and other specialists interested in cetaceans, and for biology students.
Author: Yuri Mikhalev Publisher: Springer Nature ISBN: 3030292525 Category : Science Languages : en Pages : 382
Book Description
Based on actual data of Soviet whaling, and reliable methodologies that existed at the time when this monograph was written, it examines the distribution and migration patterns of whales of the Southern Ocean. It defines distinct populations on the basis of phenes, as well as whale breeding zones, which are located in the adjacent to the Southern Ocean waters at lower latitudes. The book records the presence of a new species of killer whale in the Southern Ocean - Orcinus nana. Prenatal growth patterns, pregnancy and lactation duration, mean sizes of new-born whales are determined. Methods for the graphic recording of registering structures are described, and an original method for their decoding is proposed to determine animal age. The age of sexual and physical maturity, life expectancy is determined. Earlier unknown “pair formations” on the lower jaw of baleen whales and sperm whales are described, together with their macro, histological and electronic microscopic structure. The impact of the extermination of whales on the Southern Ocean ecosystem is examined, recommendations for control of the current state of whale populations are given, and perspectives of whale population recovery are estimated. Regions that could be used as testing areas for whale registration method are defined. The book is intended for biologist-cytologists, ecologists and other specialists interested in cetaceans, and for biology students.
Author: Chris Stuart Publisher: Penguin Random House South Africa ISBN: 177584790X Category : Nature Languages : en Pages : 146
Book Description
The latest in the popular ‘Quick ID Guide’ series, this compact little book is an easy-to-use identification guide to the whales, dolphins and seals found in southern African waters and the Southern Ocean. Close to 50 species occur here: from the demonstrative Humpback Whale and Dusky Dolphin to the striking Leopard Seal and massive Blue Whale. This title introduces the key identification features, behaviours, diets and distribution of whales, dolphins and seals; explains breaching, bow-surfing, lob-tailing and other common behaviours; features detailed illustrations of each species’ diagnostic characteristics; includes the diving outlines as well as breathing ‘blow’ and tail shapes of common whales on inside covers for quick reference. Sales points: Quick and easy ID guide by highly regarded authors; packed with full-colour photos and labelled illustrations; handy pocket format at excellent price point.
Author: Emily Rose Oachs Publisher: Bellwether Media ISBN: 1681031590 Category : Juvenile Nonfiction Languages : en Pages : 24
Book Description
The Southern Ocean, also known as the Antarctic Ocean, was not officially recognized as a distinct body of water until the year 2000. Krill, lantern fish, and whales can all be found in this oceanÕs chilly waters. Explore the Southern OceanÕs climate, currents, and sea life in this engaging title for beginning readers.
Author: Joy McCann Publisher: University of Chicago Press ISBN: 022662241X Category : Nature Languages : en Pages : 289
Book Description
“The Southern Ocean is a wild and elusive place, an ocean like no other. With its waters lying between the Antarctic continent and the southern coastlines of Australia, New Zealand, South America, and South Africa, it is the most remote and inaccessible part of the planetary ocean, the only part that flows around Earth unimpeded by any landmass. It is notorious amongst sailors for its tempestuous winds and hazardous fog and ice. Yet it is a difficult ocean to pin down. Its southern boundary, defined by the icy continent of Antarctica, is constantly moving in a seasonal dance of freeze and thaw. To the north, its waters meet and mingle with those of the Atlantic, Indian, and Pacific Oceans along a fluid boundary that defies the neat lines of a cartographer.” So begins Joy McCann’s Wild Sea, the remarkable story of the world’s remote Southern, or Antarctic, Ocean. Unlike the Pacific, Atlantic, Indian, and Arctic Oceans with their long maritime histories, little is known about the Southern Ocean. This book takes readers beyond the familiar heroic narratives of polar exploration to explore the nature of this stormy circumpolar ocean and its place in Western and Indigenous histories. Drawing from a vast archive of charts and maps, sea captains’ journals, whalers’ log books, missionaries’ correspondence, voyagers’ letters, scientific reports, stories, myths, and her own experiences, McCann embarks on a voyage of discovery across its surfaces and into its depths, revealing its distinctive physical and biological processes as well as the people, species, events, and ideas that have shaped our perceptions of it. The result is both a global story of changing scientific knowledge about oceans and their vulnerability to human actions and a local one, showing how the Southern Ocean has defined and sustained southern environments and people over time. Beautifully and powerfully written, Wild Sea will raise a broader awareness and appreciation of the natural and cultural history of this little-known ocean and its emerging importance as a barometer of planetary climate change.
Author: Doreen Gonzales Publisher: Enslow Publishing, LLC ISBN: 0766044343 Category : Juvenile Nonfiction Languages : en Pages : 50
Book Description
The Southern Ocean is home to many different plants and animals. It also has many resources that make many of the things we use every day. Readers will discover the plants and animals that live in, on, and near this special place, the scientists who explore its mysteries, and why we need to protect this resource.
Author: Dietrich Sahrhage Publisher: Springer Science & Business Media ISBN: 3642737242 Category : Science Languages : en Pages : 310
Book Description
During the intensification of research activities in the Southern Ocean in recent years, both at national levels and through international cooperation in such projects as BIOMASS with its FIBEX and SIBEX phases, the need was felt increasingly for closer collaboration between biologists, meteorologists, and oceanographers in the study of the interaction between the atmospheric forces, the water masses, and the living resources. Better knowledge in this regard is not only of scientific interest but also of practical importance, especially for the management of the resources and the protection of the Antarctic marine ecosystem. As a follow-up on a recommendation by the IOC Program Group for the Southern Oceans made in March 1983, the Intergovernmental Oceanographic Commission organized a meeting of experts on oceanography related to the dynamics of the Antarctic ecosystems. During this meeting, held in Kiel, Federal Republic of Ger many, in May 1984, biologists and oceanographers involved in BIOMASS activities met with the oceanographers of SCOR Working Group 74 to discuss ways and means for additional physical and chemical observations in the oceanographic research within BIOMASS. It was the time when large fluctuations in the distribution of krill with subsequent detrimental effects on predator species dependent on krill had just been observed, and the question arose whether this was possibly the result of changes in the Antarctic water circulation.
Author: Yuri Mikhalev
Author: Yuri Mikhalev
Author: Alan Parker
Author: Chris Stuart
Author: Emily Rose Oachs
Author: Joy McCann
Author: Doreen Gonzales
Author: Dietrich Sahrhage
Author: Henry Theodore Cheever![The Whaleman's Adventures in the Southern Ocean; as Gathered, by the Rev. H. T. Cheever, on the Homeward Cruise of the “Commodore Preble.” Edited by the Rev. W. Scoresby. [With Plates.] PDF](https://books.google.com/books/content/images/frontcover/wLRD3lxR0dAC?fife=w80-h100)
Author: Henry Theodore CHEEVER
Author: William R. D. McLaughlin