Download or read book The Life History and Ecology of the Gray Whale Eschrichtius Robustus written by Dale W. Rice and published by . This book was released on 1971 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Life History and Ecology of the Gray Whale Eschrichtius Robustus written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Life History and Ecology of the Gray Whale Eschrichtus Robustus written by Dale W. Rice and published by . This book was released on 1971 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Gray Whale Eschrichtius Robustus written by Mary Lou Jones and published by Academic Press. This book was released on 2012-12-02 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Gray Whale: Eschrichtius robustus provides an introduction to the understanding of Eschrichtius robustus or the gray whale. This book explores the life processes, reproduction, and growth of large cetacean populations. Organized into four parts encompassing 25 chapters, this book begins with an overview of the gray whale evolution, fossils, and subfossil remains, range, and systematics in historical times. This text then presents the historical of gray whale exploitation and the economic importance of these whales to humans. Other chapters consider the gray whale migration, abundance, and seasonal distribution in the wake of the California population's recovery from depletion. This book discusses as well the methods used in shore-based censuses during migration and in aerial surveys of gray whales taken on their winter grounds. The final chapter deals with some innovative approaches to the study of free-ranging cetaceans. This book is a valuable resource for anthropologists, paleontologists, biologists, and naturalists.
Download or read book Dolphins Porpoises and Whales of the World written by International Union for Conservation of Nature and Natural Resources and published by IUCN. This book was released on 1991 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Whales Whaling and Ocean Ecosystems written by James A. Estes and published by Univ of California Press. This book was released on 2006 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A must read for anyone interested in the ecology of whales, this timely and creative volume is sure to stimulate new research for years to come."—Annalisa Berta, San Diego State University
Download or read book E Robustus written by James L. Sumich and published by . This book was released on 2014-08-14 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gray Whale Eschrichtius Robustus Bibliography written by Guy Williamson Oliver and published by . This book was released on 1987 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Mammals Ashore written by Joseph R. Geraci and published by National Aquarium in Baltimore. This book was released on 2005 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive manual for understanding and carrying out marine mammal rescue activities for stranded seals, manatees, dolphins, whales, or sea otters.
Download or read book Introduction to the Biology of Marine Life written by James L. Sumich and published by Jones & Bartlett Learning. This book was released on 2004 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook examines selected groups of marine organisms within a framework of basic biological principles and processes. With attention to taxonomic, evolutionary, ecological, behavioral, and physiological aspects of biological study, the book contains chapters on habitat, patterns of association, phytoplankton, marine plants, protozoans and inv
Download or read book An Ecological Characterization of the Central and Northern California Coastal Region pt 1 Habitats written by and published by . This book was released on 1981 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gray Whale Monitoring Study written by and published by . This book was released on 1989 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Western Gray Whale Eschrichtius Robustus Mother and Calf Ecology Off Sakhalin Island written by Olga Aleksandrovna Sychenko and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The western population of gray whales (Eschrichtius robustus) is endangered with approximately 130 individuals remaining. Many individuals return annually to the same feeding sites off northeastern Sakhalin Island, indicating a site-specific dependence to this geographic area. This apparently critically important habitat is especially vital for nursing females and their calves, as female energetic requirements are increased during lactation, and calves need to be ready to separate and begin to feed on their own. This study focuses on movements, respirations and behavioral patterns of mother/calf pairs on their feeding ground, with data collected during summer-autumn of 2002-2009. Shore-based observations included three methods: theodolite tracking, focal-animal behavior sampling, and photo-identification. Whales were categorized as three groups of individuals: mother/calf pairs, weaned calves, and other individuals. Analyses were performed to assess differences between groups of individuals, and in relation to their behavior. The null hypothesis of the study was that there were no differences in movement/respiration/behavioral patterns and habitat use between different groups of individuals. Results did not support this hypothesis. Significant differences in movements and respirations were found for certain groups of individuals. These differences also varied in relation to the whales' behavioral activity (feeding, feeding/traveling, and traveling). The shore-based photography was used to obtain additional information on individuals (especially mother/calf pairs) and their sightings, as well as to evaluate the success of this approach. A total of 144 individuals, including 10 females (sighted with calves) and 31 calves were identified during 2004-2009. The shore-based photo-identification approach was successful, and due to being a non-invasive technique, is recommended as a supplemental approach to vessel-based photo-ID efforts. Reproductive success and survival of western gray whales are concern especially due to the presence of industrial activity in the area, as well as recently increased mortalities of female gray whales off Japan. Therefore, the results of this study indicate the importance of considering differences in needs and habitat utilization of different groups of individuals for basic science information as well as for management purposes of protection of western gray whales.
Download or read book Gray Whales written by Megan M. Gunderson and published by ABDO Publishing Company. This book was released on 2010-08-15 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dive into Earth's oceans and discover the world of the gray whale! Stunning, full-color photos show these barnacle-covered whales above water and below. A range map reveals where these special sea creatures can be found. A labeled diagram helps readers identify flukes, flippers, and more. The gray whale's size, habitat, senses, threats, diet, reproduction, and unique behaviors are also introduced. Plus, find out about the interesting way these baleen whales feed and learn how far they migrate. A facts page, bolded glossary terms, and an index support the engaging, easy-to-read chapter text. Checkerboard Library is an imprint of ABDO Publishing Company.
Download or read book Behavioral Ecology of Summer Resident Gray Whales Eschrichtius Robustus Feeding on Mysids in British Columbia Canada written by Lei Lani Stelle and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 2001 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to the Biology of Marine Life written by Morrissey and published by Jones & Bartlett Learning. This book was released on 2016-11 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to the Biology of Marine Life is an introductory higher education textbook for students with no prior knowledge of marine biology. The book uses selected groups of marine organisms to provide a basic understanding of biological principles and processes that are fundamental to sea life.
Download or read book Marine Fisheries Review written by and published by . This book was released on 1985 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
