The Northern Elephant Seal
Author: Charles Haskins Townsend
Publisher:
Published: 1912
Total Pages: 56
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author: Charles Haskins Townsend
Publisher:
Published: 1912
Total Pages: 56
ISBN-13:
DOWNLOAD EBOOKAuthor: Bernard J. Le Boeuf
Publisher: Cambridge University Press
Published: 2021-10-07
Total Pages: 195
ISBN-13: 1316511545
DOWNLOAD EBOOKIn-depth documentation of the diving, foraging, and migratory behavior of a superlative marine mammal, based on 50 years of study.
Author: Burney J. Le Beouf
Publisher: Univ of California Press
Published: 2022-07-15
Total Pages: 434
ISBN-13: 0520368177
DOWNLOAD EBOOKThe largest of all seals, elephant seals rank among the most impressive of marine mammals. They are renowned for their spectacular recovery from near-extinction at the end of the nineteenth century when seal hunters nearly eliminated the entire northern species. No other vertebrate has come so close to extinction and made such a complete recovery. The physiological extremes that elephant seals can tolerate are also remarkable: females fast for a month while lactating, and the largest breeding males fast for over one hundred days during the breeding seasons, at which times both sexes lose forty percent of their body weight. Elephant seals dive constantly during their long foraging migrations, spending more time under water than most whales and diving deeper and longer than any other marine mammal. This first book-length discussion of elephant seals brings together worldwide expertise from scientists who describe and debate recent research, including the history and status of various populations, their life-history tactics, and other findings obtained with the help of modern microcomputer diving instruments attached to free-ranging seals. Essential for all marine mammalogists for its information and its methodological innovations, Elephant Seals will also illuminate current debates about species extinctions and possible means of preventing them. This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1994.
Author: Fritz Trillmich
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 299
ISBN-13: 3642763987
DOWNLOAD EBOOKEl Niño is a meteorological and oceanographic phenomenon, which occurs at irregular intervals in the eastern tropical Pacific. Its most obvious characteristic is the warming of surface waters, which causes enormous disturbances of the marine environment. A severe Niño may also affect continental systems worldwide. This book gathers in a comprehensive way the information available on the effects of the exceptionally strong 1982-83 Niño on a group of marine mammals, the pinnipeds. It presents an analysis of the effects of environmental stress on the populations of top predators. Data and interpretations are based on a most unusual collection of long-term studies of pinniped population dynamics, behavior and ecology which spanned the El Niño event. The responses of pinniped populations to the El Niño disturbance of the marine ecosystem also has important implications for the management and conservation of marine mammal populations.
Author: Gisela Heckel
Publisher: Springer Nature
Published: 2021-03-28
Total Pages: 236
ISBN-13: 303063177X
DOWNLOAD EBOOKPinnipeds are marine mammals that include eared seals, true seals, and walruses. This book presents detailed reviews on the ecology and conservation of 10 pinniped species along the coasts and islands in Latin America, from Mexico to Chile and Argentina. Topics covered include their population dynamics, trophic ecology, reproduction, and behavior. In addition, the book addresses major conservation issues regarding climate change, interaction with fisheries, ecotourism, and other human activities.
Author: Nicholas Gales
Publisher: CSIRO PUBLISHING
Published: 2003-10-22
Total Pages: 468
ISBN-13: 0643099263
DOWNLOAD EBOOKMarine Mammals: Fisheries, Tourism and Management Issues brings together contributions from 68 leading scientists from 12 countries to provide a comprehensive, up-to-date review on the way we manage our interactions with whales, dolphins, seals and dugongs. The book examines how we have fared conserving the world’s marine mammal populations, with a focus on the key issues of fisheries and tourism. From a unique southern hemisphere perspective, the authors consider how science informs the culling debate, how wild fisheries and aquaculture interact with marine mammal populations and how we might manage the effects of whale, dolphin and seal watching industries. The authors also address other issues such as the way in which ethics, genetics, acoustics, ecosystem models and pollution influence the management and conservation of marine mammals. Marine Mammals is an invaluable and accessible resource for all those involved with marine mammals, including scientists, managers, policy makers, industry representatives and students. Winner of a 2004 Whitley Award.
Author: Lynn M. Stone
Publisher:
Published: 1991
Total Pages: 52
ISBN-13: 9780865931060
DOWNLOAD EBOOKDescribes the physical characteristics, behavior, and unusual life cycle of this large seal, which lives part of its life on land and part far out to sea.
Author: D. Renouf
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 424
ISBN-13: 9401131007
DOWNLOAD EBOOKWe teach our students of behavioural science that one first defines a research problem, and then the most appropriate animal is selected to investigate hypotheses. The reverse order of events is improper: a particular class of animals should not be studied for its own sake. In the case of the Pinnipeds (seals, sea lions, fur seals and walruses) the organism and the problem are essentially the same. The research questions presented in this volume in one way or another relate to survival in two worlds, the ocean for foraging, and the terrain at its edge or frozen above it for breeding. The evolution of Pinniped behaviour and the mechanisms which underlie it are a consequence of having to cope with two seemingly incompatible sets of environmental constraints. The physiological adaptations for concomitant functioning in two media with very different physical characteristics have produced correlated behav ioural modifications. The energetic demands of reproduction and foraging are idiosyncratic because each activity occurs on opposite sides of the air/water interface. As a result, the mating system must reconcile aquatic design for such functions as locomotion and thermoregulation, with the terrestrial requirements for successful pupping. Similarly, the ecology of this dual habitat prescribes the rules governing the behaviour of the neonate and its interactions with its mother.
Author: Nathaniel T. Wheelwright
Publisher: Storey Publishing
Published: 2017-10-17
Total Pages: 209
ISBN-13: 1612128890
DOWNLOAD EBOOKBecome a more attentive observer and deepen your appreciation for the natural world. The unique five-year calendar format of The Naturalist’s Notebook helps you create a long-term record and point of comparison for memorable events, such as the first songbird you hear in spring, your first monarch butterfly sighting of summer, or the appearance of the northern lights. Biologist Nathaniel T. Wheelwright and best-selling author Bernd Heinrich teach nature lovers of all ages what to look for outdoors no matter where you live, using Heinrich’s classic illustrations as inspiration. As you jot down one observation a day, year after year, your collected field notes will serve as a valuable record of your piece of the planet. This deluxe book, with a three-piece case, gilt edges, a burgundy ribbon bookmark, and a belly band with gold foil stamping, is a perfect gift for all nature lovers.
Author: Joseph R. Geraci
Publisher: National Aquarium in Baltimore
Published: 2005
Total Pages: 386
ISBN-13: 0977460908
DOWNLOAD EBOOKComprehensive manual for understanding and carrying out marine mammal rescue activities for stranded seals, manatees, dolphins, whales, or sea otters.