Download or read book Dispersion and site fidelity of breeding male grey seals Halichoerus grypus on North Rona Scotland written by S.D. TWISS and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ethology and Behavioral Ecology of Phocids written by Daniel P. Costa and published by Springer Nature. This book was released on 2022-03-17 with total page 651 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phocid (or earless or true) seals are ecologically diverse, occupying habitats from the tropics to the poles in marine and freshwater and feeding on anything from tiny zooplankton to other marine mammals. There are 18 species of phocid seals, the smallest species (ringed seal) is more than 20 times smaller than the largest (southern elephant seal), with marked sexual dimorphism present in some species. This book examines the behavior, ecology, and physiology that allow phocid seals to inhabit such a wide range of habitats. The book is composed of 16 chapters written by 37 authors from 8 countries. The book first describes the general patterns of phocid behavior, followed by descriptions of what is known about well-studied species. We have taken a holistic approach, focusing not only on the behaviors themselves but also on the factors that constrain the expression of behavior and the proximate mechanisms driving behavior. In many cases, the chapters represent collaborations between well-established researchers and early-mid career individuals who bring new perspectives to help carry the field of phocid behavioral ecology well into the future.
Download or read book Behaviour of grey seals Halichoerus grypus during a breeding season at North Rona written by S.S. ANDERSON and published by . This book was released on 1975 with total page 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 Proceedings written by and published by . This book was released on 2001 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife Review written by and published by . This book was released on 1994 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Zoology written by and published by . This book was released on 2012-07 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology Abstracts written by and published by . This book was released on 1995 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.
Download or read book Marine Mammals of the World A Comprehensive Guide to Their Identification written by Thomas Allen Jefferson and published by Elsevier. This book was released on 2011-08-29 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: With coverage on all the marine mammals of the world, authors Jefferson, Webber, and Pitman have created a user-friendly guide to identify marine mammals alive in nature (at sea or on the beach), dead specimens "in hand, and also to identify marine mammals based on features of the skull. This handy guide provides marine biologists and interested lay people with detailed descriptions of diagnostic features, illustrations of external appearance, beautiful photographs, dichotomous keys, and more. Full color illustrations and vivid photographs of every living marine mammal species are incorporated, as well as comprehendible maps showing a range of information. For readers who desire further consultation, authors have included a list of literature references at the end of each species account. For an enhanced understanding of habitation, this guide also includes recognizable geographic forms described separately with colorful paintings and photographs. All of these essential tools provided make Marine Mammals of the World the most detailed and authoritative guide available!* Contains superb photographs of every species of marine mammal for accurate identification * Authors' collective experience adds up to 80 years, and have seen nearly all of the species and distinctive geographic forms described in the guide * Provides the most detailed and anatomically accurate illustrations currently available * Special emphasis is placed on the identification of species in "problem groups, such as the beaked whales, long-beaked oceanic dolphin, and southern fur seals * Includes a detailed list of sources for more information at the back of the book.
Download or read book European Research on Cetaceans written by European Cetacean Society. Conference and published by . This book was released on 1999 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquatic Sciences and Fisheries Abstracts written by and published by . This book was released on 1995-03 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Stocks of Grey Seals Halichoerus Grypus and Common Seals Phoca Vitulina in Great Britain written by W. Nigel Bonner and published by . This book was released on 1976 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Descriptive and Quantitative Comparison of the Communication of Grey Seals Halichoerus Grypus at Three Sites in the North Atlantic Ocean written by John Warren Lawson and published by . This book was released on 1993 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Marine Mammals written by Bernd Würsig and published by Academic Press. This book was released on 2017-11-27 with total page 1195 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Marine Mammals, Third Edition covers the ecology, behavior, conservation, evolution, form and function of whales, dolphins, seals, sea lions, manatees, dugongs, otters and polar bears. This edition provides new content on anthropogenic concerns, latest information on emerging threats such as ocean noise, and impacts of climate change. With authors and editors who are world experts, this new edition is a critical resource for all who are interested in marine mammals, especially upper level undergraduate and graduate students, researchers, and managers, and is a top reference for those in related fields, from oceanographers to environmental scientists. - Significant content and topic updates, as well as the addition of new topics in such areas as anthropogenic disturbance - Visual maps of the oceans and seas mentioned in contributions, helping to place the geographical features described in the text with clear, consistent species illustrations - Written to help users learn new information or brush up on a topic quickly, with the references at the end of each entry to help guide readers into more specialist literature
Download or read book Fine scale Determinants of Female Grey Seal Halichoerus Grypus Pupping Site and Habitat Preferences at North Rona Scotland written by James Edward Stewart and published by . This book was released on 2013 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract:The grey seal (Halichoerus grypus) is widespread in the Northern Hemisphere and throughout its range hauls out to breed terrestrially on a variety of substrates. A major breeding site in the eastern North Atlantic is the remote island of North Rona, Scotland, which is characterised by undulating grassy terrain, with limited access to the sea, punctuated by irregularly spaced fresh to brackish water pools of variable size. Previous long term research at North Rona has suggested that the distribution of breeding females is influenced by key habitat features including proximity to pools of water and to access from the sea. Using distributional information available for the North Rona colony in conjunction with a set of ecologically relevant environmental predictors within an extensive GIS database, the ecological niche of the grey seal at North Rona was modelled using Ecological Niche Factor Analysis. This was used to determine the distribution of suitable habitat at the North Rona colony and to elucidate the environmental determinants of female pupping site, and subsequent habitat, preferences over multiple years spanning 1998-2010. The environmental predictors utilised were chosen based on the conclusions of previous research. Following the delineation of basic environmental preferences, the influence of social interactions was considered within this modelling approach to further help explain the distribution of pups of various stages. Adult female grey seals show a preference for both pupping sites and subsequent habitat near to pools of water of low salinity at intermediate distances to access points to the sea, though appear to exhibit stronger preferences regarding the characteristics of their habitat than pupping site. It is concluded that these preferences are a result of a requirement for proximity to pools for thermoregulation and for drinking water to avoid a negative water balance. However, females do not typically choose sites directly next to or within pools, this is a result of a trade-off between proximity to pools and proximity to their pup, which is at greater risk when separated from its mother, or close to pools in areas of high adult density. It also appears likely that females choose sites at intermediate proximity to access points as sites directly next to access points experience greater disturbance from other seals arriving to, or leaving, the colony. The widespread availability of apparently suitable habitat suggests that the North Rona colony is not restricted in size by limited availability of suitable pupping sites; other potential drivers of the decline of the North Rona colony are therefore discussed, with recommendations for future research. A parallel analysis investigating pup habitat use showed that weaned pups, unlike neonates, appear to avoid locations near to adult female grey seals. It is concluded that this is a result of social interactions driving weaned pups into areas abandoned, or not yet colonised, by adult females, which are aggressive towards conspecifics during lactation. Overall, the ENFA has provided an excellent means to assess the terrestrial pupping site and subsequent habitat preferences of the grey seal, though alternative approaches are suggested for also assessing social influences on space use.
Download or read book Animal Behavior Abstracts written by and published by . This book was released on 1995 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grey Seals and Fisheries written by Great Britain. Consultative Committee on Grey Seals and Fisheries and published by . This book was released on 1963 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
