Download or read book Diets of Gray Halichoerus Grypus and Harp Pagophilus Groenlandicus Seals in Newfoundland Waters Using Hard part and Molecular Analyses written by Jessica E. Foley and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: I examined the diet of gray (Halichoerus grypus) and harp (Pagophilus groenlandicus) seals using: hard-part analysis (HPA; subdivided into stomach and intestine) and a multiplex Polymerase Chain Reaction (PCR) technique. Through these methods, I looked at harp and gray seal diet in Newfoundland waters, investigated otolith passage rates within the digestive tract, and developed a multiplex PCR technique to compare with HPA to further investigate biases associated with diet reconstruction based on HPA. Both techniques provided evidence for retention of large prey and faster passage of smaller pray. I conclude that otoliths of different sizes and thicknesses are affected by digestion differently; I suggest that HPA should be conducted using samples from both the stomach and intestine, and that it should be used in conjunction with other methods of diet analysis like PCR as this may give a better idea of the diet, and prey sizes consumed.
Download or read book Comparative Diet Analysis of Prey in the Stomach Contents of Grey Seals Halichoerus Grypus Using Molecular Identification quantitative and Non quantitative Polymerase Chain Reaction and Hard Part Analysis written by Jessica E. Flight and published by . This book was released on 2009 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Diet and Foraging Ecology of Gray Seals Halichoerus Grypus in United States Waters written by Kristen Ampela and published by . This book was released on 2009 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interactions Between Seals and Atlantic Salmon Salmo Salar in Rivers and Estuaries of Newfoundland and Labrador written by Crystal C. Lenky and published by . This book was released on 2007 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Feeding Ecology of the Northwest Atlantic Grey Seal Halichoerus Grypus microform written by Donald Benoit and published by National Library of Canada. This book was released on 1989 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ringed Seals in the North Atlantic written by North Atlantic Marine Mammal Commission and published by Tromsø [Norway] : North Atlantic Marine Mammal Commission. This book was released on 1998 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Active Touch Sensing written by Robyn Grant and published by Frontiers E-books. This book was released on 2014-07-14 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Active touch can be described as the control of the position and movement of tactile sensing systems to facilitate information gain. In other words, it is finding out about the world by reaching out and exploring—sensing by ‘touching’ as opposed to ‘being touched’. In this Research Topic (with cross-posting in both Behavioural Neuroscience and Neurorobotics) we welcomed articles from junior researchers on any aspect of active touch. We were especially interested in articles on the behavioral, physiological and neuronal underpinnings of active touch in a range of species (including humans) for submission to Frontiers in Behavioural Neuroscience. We also welcomed articles describing robotic systems with biomimetic or bio-inspired tactile sensing systems for publication in Frontiers in Neurorobotics.
Download or read book Climate change and biodiversity in the European Union overseas entities written by and published by IUCN. This book was released on with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecosystem Ecology Research Trends written by Junying Chen and published by Nova Publishers. This book was released on 2008 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecosystem ecology is the integrated study of biotic and abiotic components of ecosystems and their interactions within an ecosystem framework. This science examines how ecosystems work and relates this to their components such as chemicals, bedrock, soil, plants, and animals. A major focus of ecosystem ecology is on functional processes, ecological mechanisms that maintain the structure and services produced by ecosystems. These include primary productivity (production of biomass), decomposition, and trophic interactions. Studies of ecosystem function have greatly improved human understanding of sustainable production of forage, fibre, fuel, and provision of water. Functional processes are mediated by regional-to-local level climate, disturbance, and management thus ecosystem ecology provides a powerful framework for identifying ecological mechanisms that interact with global environmental problems, especially global warming and degradation of surface water. This book presents the latest developments in the field from around the world.
Download or read book Marine Mammals written by Randall W. Davis and published by Springer Nature. This book was released on 2019-11-14 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book provides new insights into the morphological, metabolic, thermoregulatory, locomotory, diving, sensory, feeding, and sleep adaptations of Cetacea (whales and dolphins), Pinnipedia (seals, sea lions and walrus), Sirenia (manatees and dugongs) and sea otters for an aquatic life. Each chapter reviews the discoveries from previous studies and integrates recent research using new techniques and technology. Readers will gain an understanding of the remarkable adaptations that enable marine mammals to spend all or most of their lives at sea, often while hunting prey at depth.
Download or read book Marine Mammals and Fisheries written by J. R. Beddington and published by Unwin Hyman. This book was released on 1985-01-01 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Mammal Welfare written by Andy Butterworth and published by Springer. This book was released on 2017-06-19 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine mammals attract human interest – sometimes this interest is benign or positive – whale watching, conservation programmes for whales, seals, otters, and efforts to clear beaches of marine debris are seen as proactive steps to support these animals. However, there are many forces operating to affect adversely the lives of whales, seals, manatees, otters and polar bears – and this book explores how the welfare of marine mammals has been affected and how they have adapted, moved, responded and sometimes suffered as a result of the changing marine and human world around them. Marine mammal welfare addresses the welfare effects of marine debris, of human traffic in the oceans, of noise, of hunting, of whale watching and tourism, and of some of the less obvious impacts on marine mammals – on their social structures, on their behaviours and migration, and also of the effects on captivity for animals kept in zoos and aquaria. There is much to think and talk about – how marine mammals respond in a world dramatically influenced by man, how are their social structures affected and how is their welfare impacted?
Download or read book Toxicology of Marine Mammals written by Joseph G. Vos and published by CRC Press. This book was released on 2002-12-05 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: The activities of modern society have unleashed a range of toxic chemicals into the global environment. Many of these toxicants are now being detected in increasing quantities in the tissues of marine mammals, most notably in top predators who acquire relatively large amounts of toxic chemicals by ingesting contaminated prey. Toxicology of M
Download or read book Biomonitoring of Trace Aquatic Contaminants written by David J.H. Phillips and published by Springer Science & Business Media. This book was released on 1994 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twenty years ago, researchers wishing to identify contaminated areas in aquatic environments generally took water samples, and analysed them badly (as we have since discovered) for a few "pollutants" which were of topical note at the time (and which could be quantified by the methods then available). Today, the use of aquatic organisms as biomonitors in preference to water analysis has become commonplace, and many national and interna tional programmes exist around the world involving such studies. We believe that this trend will continue, and have complete faith in the methodology (when it is employed correctly). We hope that the following text assists in some part in attaining this goal, such that the quality of our most basic global resource -water - is adequately protected in the future. DAVE PHILLIPS, PHIL RAINBOW England, March 1992 vii Acknowledgements Our thanks for contributions to this book are due to several individuals and groups, for varying reasons. Firstly, a co-authored book is always a triumph, and we trust that the following text is an acceptable compromise of the views of two individual authors, on a complex and developing topic. Secondly, many of the ideas herein have crystallised over the last two decades as the field has grown, and we are individually and collectively grateful to a number of researchers for their insight and assistance.
Download or read book Sea of Slaughter written by Farley Mowat and published by Douglas & McIntyre. This book was released on 2012 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: The northeastern seaboard of Canada and the United States, extending from Labrador to Cape Cod, was the first region of North America to suffer from human exploitation. Farley Mowat informs extensive historical and biological research with his direct experience living in and observing this region. When it was first published more than 20 years ago, Sea of Slaughter served as a catalyst for environment reform, raising awareness of the decline and destruction of marine and coastal species. Today, it remains a prescient environmental classic, serving, now as ever, as a haunting reminder of the impact of human interest on the natural world.
Download or read book Marine Mammal Ecology and Conservation written by Ian L. Boyd and published by Oxford University Press. This book was released on 2010-08-12 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much of our knowledge about marine mammals is derived from a long-term and dedicated research effort that is evolving rapidly due to the introduction and invention of new methods.This book reflects the inventiveness of marine researchers as they try to find ways around the problems presented to them by these unusual and challenging animals.
Download or read book Whales Seals Fish and Man written by A. Schytte Blix and published by Elsevier. This book was released on 1995-10-06 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume outlines the major findings from the Norwegian research programme on whales and seals in Norwegian waters. A wide range of topics are covered, including physiological aspects, social organization, population dynamics, stock assessment and management. The book will be of great value to scientists and managers, as well as to members of the general public interested in environmental issues.
