Download or read book Assessing the Risk of Ship Strikes to Humpback Megaptera Novaeangliae and Fin Balaenoptera Physalus Whales Off the West Coast of Vancouver Island Canada written by Canadian Science Advisory Secretariat and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing the Risk of Lethal Ship Strikes to Humpback Megaptera Novaeangliae and Fin Balaenoptera Physalus Whales Off the West Coast of Vancouver Island Canada written by Linda Marie Nichol and published by . This book was released on 2017 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impacts of Shipping on Marine Fauna written by Christine Erbe and published by Frontiers Media SA. This book was released on 2020-10-23 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
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 Mortality and Serious Injury Determinations for Baleen Whale Stocks Along the Gulf of Mexico United States and Canadian Eastern Seaboards 2005 2009 written by Allison H. Glass and published by . This book was released on 2011 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Northeast Fisheries Science Center (NEFSC) has developed criteria to evaluate reports of human-caused injury and mortality to large whales. The criteria minimize the identification of false positive human-caused mortalities and serious injuries and provide a minimum value of human impact to whale stocks. Serious injury is defined as an injury that is likely to lead to death. This report describes determinations made for reports received from 2005 - 2009 involving North Atlantic right (Eubalaena glacialis), humpback (Megaptera novaeangliae), fin (Balaenoptera physalus), sei (B. borealis), blue (B. musculus), minke (B. acutorostrata), and Bryde's (B. edeni) whales observed along coastal Gulf of Mexico and the eastern seaboard of the United States and adjacent Canadian Maritimes. A total of 496 unique large whale events were verified during the period, of which 252 (51%) involved human interactions, 20 (4%) did not involve a human interaction, and for 224 (45%) of the events it was unknown if a human interaction occurred. Of the events involving human interactions, we confirmed 193 unique entanglements and 63 ship strikes. Four events had evidence of both entanglement and ship strike, and are included in the totals for both these event categories. Eighteen (9%) of the entanglements and 28 (44%) of the ship strikes were fatal. Serious injury was sustained in 22 (11%) of the entanglement events and in 2 (3%) of the confirmed ship strikes. Serious injury was prevented due to disentanglement efforts in 30 (16%) entanglement events. Forty-one (21%) of the entanglements and 11 (17%) of the ship strike events did not have adequate documentation to determine if serious injury occurred. Seventy-eight (40%) of the entanglement events and 18 (29%) of the ship strike events were determined to have not caused serious injury or death. We also confirmed a total of 308 mortalities: 46 (15%) due to human interaction, 16 (5%) due to natural causes and 246 (80%) which lacked sufficient evidence to determine cause of death. Minke whales had the greatest number of entanglement mortalities (n=7); humpback whales had the highest number of serious injury events resulting from entanglements (n=12); fin whales had the greatest number of ship strike mortalities (n=9); and right whales had the only serious injuries (n=2) from ship strikes. These mortality and serious injury numbers are minimum counts because of poor detection probabilities and inadequate documentation for the majority of events. Thus, the true level of human impact to these stocks is assumed to be greater than that reported here; the amount greater is unknown"--Abstract.
Download or read book Dolphins Whales and Porpoises written by Randall R. Reeves and published by IUCN. This book was released on 2003 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book World Seas An Environmental Evaluation written by Charles Sheppard and published by Academic Press. This book was released on 2018-09-07 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: World Seas: An Environmental Evaluation, Second Edition, Volume Three: Ecological Issues and Environmental Impacts covers global issues relating to our seas, including a biological description of the coast and continental shelf waters, the development and use of the coast, landfills and their effects, pollutant discharges over time, the effects of over-fishing, and the management methods and techniques used to ensure continued ecosystem functioning. The relative importance of water-borne and airborne routes differ in different parts of the world is explored, along with extensive coverage of major habitats and species groups, governmental, education and legal issues, fisheries effects, remote sensing, climate change and management. This book is an invaluable, worldwide reference source for students and researchers concerned with marine environmental science, fisheries, oceanography and engineering and coastal zone development. Provides scientific reviews of regional issues, empowering managers and policymakers to make progress in under-resourced countries and regions Covers environmental issues arising from the human use of both the sea and its watershed Presents informed commentary on major trends, problems and successes, and recommendations for the future
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 Understanding the Co occurrence of Large Whales and Commercial Fixed Gear Fisheries Off the West Coast of the United States written by and published by . This book was released on 2013 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large whale entanglement in commercial fishing gear off the U.S. west coast has been identified as an issue of concern by NOAA's National Marine Fisheries Service (NMFS) because of the potential impacts to both large whales (individually and at a stock/population level) and the commercial fishing industry. Large whales entangled in gear may be injured and/or impared which could affect the ability of individuals to survive and a population's ability to recover. Blue whales (Balaenoptera musculus), fin whales (Balaenoptera physalus), gray whales (Eschrichtius robustus), humpback whales (Megaptera novaeangliae) and sperm whales (Physeter macrocephalus) were included in this study based on their distribution and density associated with habitat, as modeled through multi-year ship-based surveys or migration studies and/or historic entanglement records. Along the U.S. west coast, an average of 10 large whales have been reported entangled between 2000 and 2012. Little information has been confirmed from entanglement reports about the origin of the entangling fishing gear; therefore NMFS has developed analytical tools to assess the potential entanglement risk associated with various fixed gear fisheries relative to their co-occurrence with large whale species. A primary tool includes the development of a model to represent the spatial and temporal distributions of commercial fishing effort, focusing on fixed gear fisheries with gear that has been confirmed as entangling whales through sightings and strandings of entangled animals and or has the potential for causing entanglement based on similarities in the general configuration of gear across the fisheries. Fishing effort represented in this study, both state and federally managed, was derived from landings data obtained through the Pacific Fisheries Information Network (PacFIN). The relative density of fishing effort throughout the calendar year was overlaid with species-specific whale distribution patterns, modeled from systematically-collected marine mammal survey data, to help identify spatial and temporal overlap between whales and fisheries. The other tool developed, a co-occurrence model, identified potential species-specific elevated risk areas where and when large whales are more likely to encounter fishing gear, which is the first step in assessment of whale entanglement risk associated with fixed-gear fisheries on the U.S. west coast. Co-occurrence "scores" were calculated based on correlated area, time, and density of overlap between fixed gear fisheries and whale distribution. Overall, the Dungeness crab trap fishery had the highest co-occurrence scores, and associated entanglement risk, with all whale species included in the model. Confirmed entanglement reports were compared with model results. Alignment of known entanglement locations with areas of higher co-occurrence scores supported the use of the co-occurrence model for assessment of whale entanglement risk off the U.S. west coast. Research on the identified elevated risk areas, combined with the ability to trace gear continued gear research, and strengthened outreach to improve reporting, should improve the ability to minimize or mitigate the risk of large whale entanglements.
Download or read book The Whalebone Whales of New England written by Glover Morrill Allen and published by . This book was released on 1916 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mariana Islands Range Complex written by and published by . This book was released on 2010 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Mammals and Noise written by W. John Richardson and published by Academic Press. This book was released on 2013-10-22 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many marine mammals communicate by emitting sounds that pass through water. Such sounds can be received across great distances and can influence the behavior of these undersea creatures. In the past few decades, the oceans have become increasingly noisy, as underwater sounds from propellers, sonars, and other human activities make it difficult for marine mammals to communicate. This book discusses, among many other topics, just how well marine mammals hear, how noisy the oceans have become, and what effects these new sounds have on marine mammals. The baseline of ambient noise, the sounds produced by machines and mammals, the sensitivity of marine mammal hearing, and the reactions of marine mammals are also examined. An essential addition to any marine biologist's library, Marine Mammals and Noise will be especially appealing to marine mammalogists, researchers, policy makers and regulators, and marine biologists and oceanographers using sound in their research.
Download or read book Effects of EMFs from Undersea Power Cables on Elasmobranchs and Other Marine Species Final Report written by T. Tricas and published by DIANE Publishing. This book was released on 2012-12 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Protected Areas for Whales Dolphins and Porpoises written by Erich Hoyt and published by Earthscan. This book was released on 2012 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Erich Hoyt's handbook is an admirable, timely and highly welcome contribution.'Michael Stachowitsch, Marine EcologyWhat does it mean to save the whales if their habitat is left unprotected? Marine Protected Areas for Whales, Dolphins and Porpoises is the definitive handbook on this pressing issue and the first to bridge the gap between the disciplines of marine protected areas and cetacean conservation. It launches a new chapter in cetacean conservation with its investigation into the crucial habitat needs and protection requirements of some 84 species.The author, one of the world's foremost experts in this field, takes you around the world to investigate the promising results of the latest conservation research and the strategies for obtaining marine protected areas in coastal waters and on the high seas, using national legislation and regional and international conventions. This is an essential introduction, guide and reference work for those working to ensure a future for whales and dolphins.
Download or read book The Marine Mammals of the Gulf of Mexico written by Bernd G. Würsig and published by W. L. Moody JR. Natural Histor. This book was released on 2000 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given in honor of District Governor Hugh Summers and Mrs. Ahnise Summers by the Rotary Club of Aggieland with matching support from the Sara and John H. Lindsey '44 Fund, Texas A & M University Press, 2004.
Download or read book Mortality and Serious Injury Determinations for Baleen Whale Stocks Along the United States Eastern Seaboard and Adjacent Canadian Maritimes 2003 2007 written by Allison H. Glass and published by . This book was released on 2009 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Northeast Fisheries Science Center (NEFSC) has developed criteria to evaluate reports of human-caused injury and mortality to large whales. The criteria minimize the identification of false positive human-caused mortalities and serious injuries, and therefore provide a minimum value of human impact to whale stocks. Serious injury is defined as an injury that is likely to lead to death. This report describes determinations made for reports received from 2003 through 2007 involving right (Eubalaena glacialis), humpback (Megaptera novaeangliae), fin (Balaenoptera physalus), sei (B. borealis), blue (B. musculus), minke (B. acutorostrata) and Bryde's (B. edeni) whales observed along the eastern seaboard of the United States and adjacent Canadian Maritimes. A total of 537 unique large whale events were verified during the period, including carcasses (both beached and at-sea) and live whales. We confirmed 153 unique entanglement, 52 ship strike, and 349 mortality events. Twenty-one (14%) of the entanglements and 30 (58%) of the ship strikes were fatal. Serious injury was sustained in 16 (10%) of the entanglement events and in 2 (4%) of the confirmed ship strikes. Twenty-four (16%) of the entanglements and five (10%) of the ship strike events did not have adequate documentation to determine if serious injury occurred. Seventy-six (50%) of the entanglement events and 13 (25%) of the ship strike events did not cause serious injury or death. Of the 349 confirmed mortalities, 280 (80%) lacked sufficient evidence to determine cause of death. Minke whales had the greatest number of entanglement mortalities (n=9); humpback whales had the highest number of serious injury events resulting from entanglements (n=10); and right whales had the greatest number of ship strike mortalities (n=9) and serious injuries (n=2) from ship strikes. These mortality and serious injury numbers are minimum counts due to poor detection probabilities and inadequate documentation. Thus, the true level of human impact to these stocks is assumed to be greater than that reported here, however the amount greater is unknown"--Abstract.
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?
