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 On Thin Ice written by United States. Congress. House. Select Committee on Energy Independence and Global Warming and published by . This book was released on 2010 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Collected Reprints written by Southwest Fisheries Center (U.S.) and published by . This book was released on 1984 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On Thin Ice written by Richard Ellis and published by Vintage. This book was released on 2010-12-07 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polar bears—fierce and majestic—have captivated us for centuries. Feared by explorers, revered by the Inuit, and beloved by zoo goers everywhere, they are a symbol for the harsh beauty and muscular grace of the Arctic. But as global warming threatens the ice caps’ integrity, the polar bear has also come to symbolize the environmental peril that has arisen due to harmful human practices. In the past twenty years alone, the world population of polar bears has shrunk by half. Today they number just 22,000. Urgent and stirring, On Thin Ice is both a celebration and a rallying cry on behalf of one of earth’s greatest natural treasures.
Download or read book Introduction to the Biology of Marine Life written by John Morrissey and published by Jones & Bartlett Publishers. This book was released on 2012 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ocean as a habitat, the changing marine environment, the world ocean, classification of the marine environment. Patterns of association. Mircrobial heterotrophs and invertebrates. Marine verterbrates, fishes and reptiles. the deep sea floor.
Download or read book The Polar Bear written by Annie Hemstock and published by Capstone. This book was released on 1998-08 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the physical characteristics, life cycle, relations with humans, and survival methods of the world's largest land carnivore, the polar bear. Includes photo diagram.
Download or read book A Trip to the Zoo eBook written by Shirley J. Hewlett and published by Lorenz Educational Press. This book was released on 1995-09-01 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Trip to the Zoo uses children's fascination with animals to teach a unit on the zoo. This volume includes poems and stories about different kinds of zoo animals as well as ideas for classroom activities and art projects.
Download or read book Reproduction in Mammals written by Virginia Hayssen and published by JHU Press. This book was released on 2017-10-27 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fascinating look at the diverse reproductive strategies of numerous female mammals, from hyenas to goats, kangaroos to whales. Newborn mammals can weigh as little as a dime or as much as a motorcycle. Some receive milk for only a few days, whereas others nurse for years. Humans typically have only one baby at a time following nine months of pregnancy, but other mammals have twenty or more young after only a few weeks in utero. What causes this incredible reproductive diversity? In Reproduction in Mammals, Virginia Hayssen and Teri J. Orr present readers with a fascinating examination of the varied reproductive strategies of a broad spectrum of mammals, from marsupials to whales. This unique book's comprehensive coverage gathers stories from many taxa into a single, cohesive perspective that centers on the reproductive lives of females. The authors shed light on a number of intriguing questions, including • do bigger moms have bigger babies? • do primates have longer pregnancies than other groups? • does habitat influence animals' reproductive patterns? • do carnivores typically produce larger litters than prey species? The book opens with the authors' definition of what constitutes a female perspective and an examination of the evolution of reproduction in mammals. It then outlines the typical individual mammalian female: her genetics, anatomy, and physiology. Taking a nuanced approach, Hayssen and Orr describe the female reproductive cycle and explore female mammals' interactions with males and offspring. Readers will come away from this thought-provoking book with an understanding of not only how reproduction fits into the lives of female mammals but also how biology has affected the enormously diverse reproductive patterns of the phenotypes we observe today.
Download or read book Top 50 Reasons to Care About Polar Bears written by Rebecca E. Hirsch and published by Enslow Publishing, LLC. This book was released on 2010-01-01 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the polar bears, their life cycle, diet, young, habitat, and reasons why they are endangered animals.
Download or read book Dominion of Bears written by Sherry Simpson and published by University Press of Kansas. This book was released on 2013-10-18 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long ago we invited bears into our stories, our dreams, our nightmares, our lives. We have always sought them out where they live, for their hides, their meat, their beauty, their knowingness. Human country and bear country exist side by side. As Sherry Simpson suggests, the relationship between bears and humans is ancient and ongoing and, in Alaska, profoundly and often uncomfortably close. A huge number of North America’s bears live in Alaska: including at least 31,000 brown bears, 100,000 black bears, and 3,500 polar bears. And nearly every aspect of Alaskan society reflects their presence, from hunting to tourism marketing to wildlife management to urban planning. A long-time Alaskan, Simpson offers a series of compelling essays on Alaskan bears in both wild and urban spaces—because in Alaska, bears are found not only in their natural habitat but also in cities and towns. Combining field research, interviews, and a host of up-to-date scientific sources, her finely polished prose conveys a wealth of information and insight on ursine biology, behavior, feeding, mating, social structure, and much more. Simpson crisscrosses the Alaskan landscape in pursuit of bears as she muses, marvels, and often stands in sheer awe before these charismatic creatures. Firmly grounded in the expertise of wildlife biologists, hunters, and viewing guides, she shows bears as they actually are, not as we imagine them to be. She considers not only the occasionally aggressive behavior bears need to survive, but also the violence exacted upon them by trophy hunters, advocates of predator control, or suburbanites who view bears as land sharks that threaten the safety of their families. Shifting effortlessly between fascinating facts and poetic imagery, Simpson crafts an extended meditation on why we are so drawn to bears and why they continue to engage our imaginations, populate indigenous mythologies, and help define our essential visions of wilderness. As Simpson observes, “The slightest evidence that bears share your world—or that you share theirs—can alter not only your sense of the landscape, but your sense of yourself within that landscape.”
Download or read book St Nicholas written by and published by . This book was released on 1928 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Marine Mammals written by William F. Perrin and published by Academic Press. This book was released on 2009-02-26 with total page 1355 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thorough revision of the classic Encyclopedia of Marine Mammals brings this authoritative book right up-to-date. Articles describe every species in detail, based on the very latest taxonomy, and a host of biological, ecological and sociological aspects relating to marine mammals. The latest information on the biology, ecology, anatomy, behavior and interactions with man is provided by a cast of expert authors – all presented in such detail and clarity to support both marine mammal specialists and the serious naturalist. Fully referenced throughout and with a fresh selection of the best color photographs available, the long-awaited second edition remains at the forefront as the go-to reference on marine mammals. - More than 20% NEW MATERIAL includes articles on Climate Change, Pacific White-sided Dolphins, Sociobiology, Habitat Use, Feeding Morphology and more - Over 260 articles on the individual species with topics ranging from anatomy and behavior, to conservation, exploitation and the impact of global climate change on marine mammals - New color illustrations show every species and document topical articles FROM THE FIRST EDITION "This book is so good...a bargain, full of riches...packed with fascinating up to date information. I recommend it unreservedly it to individuals, students, and researchers, as well as libraries." --Richard M. Laws, MARINE MAMMALS SCIENCE "...establishes a solid and satisfying foundation for current study and future exploration" --Ronald J. Shusterman, SCIENCE
Download or read book Report Upon the Commercial Relations of the United States with Foreign Countries written by United States Department of State and published by . This book was released on 1857 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report on All the Commercial Relations of the United States with All Foreign Nations Consular returns written by United States. Department of State and published by . This book was released on 1857 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report on the Commercial Relations of the United States with All Foreign Nations Consular returns written by United States. Department of State and published by . This book was released on 1857 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Commercial Relations of the United States with Foreign Countries written by United States. Bureau of Foreign and Domestic Commerce and published by . This book was released on 1857 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ethology and Behavioral Ecology of Sea Otters and Polar Bears written by Randall W. Davis and published by Springer Nature. This book was released on 2021-07-03 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sea otters and polar bears are carnivorous marine mammals that still resemble their terrestrial ancestors. Compared with Cetacea (whales and dolphins), Sirenia (dugongs and manatees), and Pinnipedia (seals, sea lions, and walrus), they are less adapted for an aquatic life and the most recently evolved among marine mammals. Sea otters are amphibious but seldom come ashore, and polar bears primarily occur on sea ice or along the shore. When at sea, both species spend most of their time swimming at the surface or making short, shallow dives when foraging or pursuing prey. Indeed, polar bears rarely pursue seals in water. Nevertheless, polar bears are powerful swimmers and will stalk seals from the water. As with many other large carnivores, they are solitary hunters. Although sea otters are gregarious and form aggregations at sea called rafts, they are primarily asocial. Except during mating, the principal interaction among sea otters occurs between a female and offspring during the six-month dependency period. In large carnivores (e.g., wolves and lions) that feed on ungulates, sociality and cooperation are favored because of the need to capture large prey and defend carcasses. Polar bears, which are the largest terrestrial carnivore, are solitary hunters of seals and are neither gregarious nor social. Males and females briefly associate during courtship and mating. During this time, males aggressively compete for females. At other times, males generally avoid each other except for aggregations of males that form while summering on land, and females with cubs avoid males, which are known for infanticide. As with sea otters, the interaction of polar bears outside of mating occurs between a female and her offspring during the 2-3 year dependency period. This interaction is critically important when altricial cubs are born in the winter den. This book provides new insight into the ethology and behavioral ecology of sea otters and polar bears. Each chapter reviews the discoveries of previous studies and integrates recent research using new techniques and technology. The authors also address historic and current anthropogenic challenges for their survival as climate change alters entire marine ecosystems.
