Download or read book Overview of the Conservation Status of Cartilaginous Fishes Chrondrichthyans in the Mediterranean Sea written by Rachel D. Cavanagh and published by IUCN. This book was released on 2007 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: "IUCN--Shark Specialist Group"--P. [4] of cover.
Download or read book Overview of the Conservation Status of the Marine Fishes of the Mediterranean Sea written by and published by IUCN. This book was released on 2011 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Elasmobranchs of the Mediterranean and Black Sea written by Mohamed Nejmeddine Bradai and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2012 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: In many fisheries they are, however, often landed and marketed.
Download or read book Sharks and Their Relatives written by Merry Camhi and published by IUCN. This book was released on 1998 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sharks and their relatives, the rays and chimaeras, are the diverse group of cartilaginous fishes that have evolved over 400 million years. Historically considered of low economic value to large-scale fisheries, today many of these fishes have become the target of directed commercial and recreational fisheries around the world, and they are increasingly taken in the by-catch of fisheries targeting other species. This report emphasizes the widely-acknowledged need to improve shark fishery monitoring, expand biological research and take management action. It serves as an introduction to the ecology, status and conservation of the sharks and their relatives for a general audience. Shark fisheries can only be managed sustainably, and shark populations remain viable, with the introduction of new conservation and management initiatives.
Download or read book Field Identification Guide to the Sharks and Rays of the Mediterranean and Black Sea written by Fabrizio Serena and published by Food & Agriculture Org.. This book was released on 2005 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a fully illustrated field guide for the identification of the sharks and rays most relevant to the fisheries of the Mediterranean and Black Sea. An extensive literature review was carried out for the preparation of this document. A total of 49 sharks, 34 batoids and 1 chimaera are fully treated. The presence of 5 sharks and 2 batoids included in this field guide, need, however, to be confirmed. The guide includes sections on technical terms and measurements for sharks and batoids, and fully illustrated keys to those orders and families that occur in the region. Each species account includes: at least one annotated illustration of the species highlighting its relevant identification characters; basic information on nomenclature, synonyms and possible misidentifications; FAO common names; basic information on size, habitat and biology, distribution, importance to fisheries, and conservation and exploitation status.
Download or read book Sharks Rays and Chimaeras written by Sarah L. Fowler and published by IUCN. This book was released on 2005 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Elasmobranch Biodiversity Conservation and Management written by Sarah L. Fowler and published by IUCN. This book was released on 2002 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Darwin Elasmobranch Biodiversity Conservation and Management project in Sabah held a three-day international seminar that included a one-day workshop in order to highlight freshwater and coastal elasmobranch conservation issues in the region and worldwide, to disseminate the result of the project to other Malaysian states and countries, and to raise awareness of the importance of considering aspects of elasmobranch biodiversity in the context of nature conservation, commercial fisheries management, and for subsistence fishing communities. These proceedings contain numerous peer-reviewed papers originally presented at the seminar, which cover a wide range of topics, with particular reference to species from freshwater and estuarine habitats. The workshop served to develop recommendations concerning the future prospects of elasmobranch fisheries, biodiversity, conservation and management. This paper records those conclusions, which highlight the importance of elasmobranchs as top marine predators and keystone species, noting that permanent damage to shark and ray populations are likely to have serious and unexpected negative consequences for commercial and subsistence yields of other important fish stocks.
Download or read book Chondrichthyes written by Luis Fernando Rodrigues-Filho and published by BoD – Books on Demand. This book was released on 2017-12-20 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chondrichthyes are a group of cartilaginous fish, where we have sharks, rays, and chimeras as members. This group plays an important role in aquatic ecology, as they act as predators throughout the food chain (e.g., sharks). However, many populations of Chondrichthyes are threatened by several factors (increased direct fishing, high mortality rate as accompanying fauna, marine pollution, habitat destruction, etc.). These declines are evident in many parts of the world and have come to the attention of scientists, conservation organizations, the media, and the general public. Fisheries legislation regulating international fisheries markets has been amended to provide greater protection for this group along with other species of fish. However, little is known about these species, which reinforces the importance of studies in order to have a better understanding of the elasmobranch stocks, as well as to identify the influences of the anthropic action of fishing. In response to knowledge on the low sustainability of cartilaginous fish fisheries on a global scale, FAO has developed an international plan of action for the management and conservation of these fish, with the aim of developing and implementing national plans of action to ensure management and conservation of these stocks, having as main recommendation the collection of information about the Chondrichthyes, especially the sharks. Even so, this group is little known in terms of biodiversity, ecology, behavior, and a host of other characteristics relevant to this taxon, which is very worrying. Chondrichthyes - Multidisciplinary Approach attempts to portray to the readers up-to-date information on Chondrichthyes to promote an overview of the current taxon, serving as an indispensable source of access to more accurate and detailed information on shark rays and chimeras.
Download or read book Marine Ecology written by Muhammet Turkoglu and published by BoD – Books on Demand. This book was released on 2018-08-01 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decades, aquatic resources have been severely depleted due to human-induced factors such as overexploitation and pollution and more recently due to deviations in the physicochemical parameters of oceans, dramatic changes in weather patterns and melting of glaciers. The effects of these man-made factors are occurring in a relatively shorter time scale and, in many cases, are beyond the capacity of organisms to adapt to these deviations. The majority of natural aquatic resources, which are one of the most important food sources on the planet, are being used to the extent that limits their capacity for regeneration. Despite ongoing attempts towards developing strategies for long-term management of aquatic resources all over the world, efforts have met with limited success. Thus, the sustainable use of aquatic resources has become a very important reality considering a projected human population of 11 billion by the year 2100. With this reality in mind, the purpose of this book is to shed more light on the field of marine ecology by emphasizing the diversity of aquatic life on earth and its importance both as part of a balanced ecosystem and as part of critical source of food on earth. The book covers important findings, discussions and reviews on a variety of subjects on environmental and competitive interactions of marine organisms at different trophic levels and their effects on the productivity, dynamics and structure of marine ecosystems around the world. Each chapter focuses on a specific case in the field of marine ecology and was written by researchers with years of experience in their respective fields. We hope that academicians, researchers and students as well as experts and professionals working in the field of marine ecology will benefit from these contributions. We also hope that this book will inspire more studies to help better understand the marine environment and develop strategies to better protect this crucial element of life on earth.
Download or read book Sharks and Their Relatives II written by Jeffrey C. Carrier and published by CRC Press. This book was released on 2010-03-09 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the award-winning first volume, The Biology of Sharks and Their Relatives, published in 2004, the field has witnessed tremendous developments in research, rapid advances in technology, and the emergence of new investigators beginning to explore issues of biodiversity, distribution, physiology, and ecology in ways that eluded more traditional
Download or read book A Pocket Guide to Sharks of the World written by David A. Ebert and published by Princeton University Press. This book was released on 2021-08-24 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: An updated and comprehensive guide identifying all of the world's sharks Sharks are some of the most misunderstood animals on the planet. We still have a lot to learn about these fascinating creatures, which are more seriously threatened with extinction and in greater need of conservation and management than any other major group of vertebrates. A Pocket Guide to Sharks of the World is the only field guide to identify, illustrate, and describe every known shark species. Its compact format makes it handy for many situations, including recognizing living species, fishery catches, or parts sold at markets. This expanded second edition presents lavish images, details on newly discovered species, and updated text throughout. The book contains useful sections on identifying shark teeth and the shark fins most commonly encountered in the fin trade, and takes a look at shark biology, ecology, and conservation. A Pocket Guide to Sharks of the World will be an essential resource and definitive reference for years to come. An updated guide to all of the world’s sharks Each species is illustrated and described Handy, compact format with concise text Useful sections on the identification of shark teeth and fins
Download or read book Wildlife in a Changing World written by Jean-Christophe Vié and published by IUCN. This book was released on 2009 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Wildlife in a Changing World" presents an analysis of the 2008 IUCN Red List of Threatened Species. Beginning with an explanation of the IUCN Red List as a key conservation tool, it goes on to discuss the state of the world s species and provides the latest information on the patterns of species facing extinction in some of the most important ecosystems in the world, highlighting the reasons behind their declining status. Areas of focus in the report include: freshwater biodiversity, the status of the world s marine species, species susceptibility to climate change impacts, the Mediterranean biodiversity hot spot, and broadening the coverage of biodiversity assessments."
Download or read book Atlas of the maturity stages of Mediterranean fishery resources written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2019-04-15 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This atlas aims to present sound approaches to maturity sampling for a wide range of Mediterranean species – including bony fish, cartilaginous fish, both oviparous and viviparous, crustaceans and cephalopods – based on an accurate determination of the different maturity stages. It includes macroscopic photos of gonads belonging to the main species and, for some, a validation-based histological analysis.
Download or read book Biodiversity and Biomedicine written by Munir Ozturk and published by Academic Press. This book was released on 2020-07-15 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biodiversity and Biomedicine: Our Future provides a new outlook on Earth's animal, plant, and fungi species as vital sources for human health treatments. While there are over 10 million various species on the planet, only 2 million have been discovered and named. This book identifies modern ways to incorporate Earth's species into biomedical practices and emphasizes the need for biodiversity conservation. Written by leading biodiversity and biomedical experts, the book begins with new insights on the benefits of biologically active compounds found in fungi and plants, including a chapter on the use of wild fruits as a treatment option. The book goes on to discuss the roles of animals, such as amphibians and reptiles, and how the threatened presence of these species must be reversed to conserve biodiversity. It also discusses marine organisms, including plants, animals, and microbes, as essential in contributing to human health. Biodiversity and Biomedicine: Our Future is a vital source for researchers and practitioners specializing in biodiversity and conservation studies. Students in natural medicine and biological conservation will also find this useful to learn of the world's most bio-rich communities and the molecular diversity of various species. - Presents new developments in documenting and identifying species for biodiversity conservation and ethical considerations for biodiversity research - Examines biodiversity as an irreplaceable resource for biomedical breakthroughs using available species for medical research - Discusses challenges and opportunities for biodiversity protection and research in biosphere reserves
Download or read book Coastal Fishes of Southern Africa written by Phillip C. Heemstra and published by NISC (PTY) LTD. This book was released on 2004 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to over 400 species of the fishes along the coast of southern Africa, this work features over 600 original paintings showing changes with growth and sexual differences in colour of many of the fishes. The species accounts include descriptions and other information for identification and comparison of similar species.
Download or read book Great White Sharks written by A. Peter Klimley and published by Academic Press. This book was released on 1998-04-03 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now available in paperback, the first comprehensive reference on Great White sharks separates fact from fiction and presents real evidence of the ecology and behavior of these remarkable animals. The volume begins with the evolution of the white shark and its relatives and continues with sections on its anatomy, behavior, ecology, distribution, population dynamics, and interactions with humans. Included in the volume are many illustrations, maps, diagrams, graphs and photos. - Covers all biological aspects of Great White sharks - Includes contributions from an international team of leading authorities - Heavily illustrated with maps, diagrams, graphs, and photos
Download or read book Rays of the World written by Peter Last and published by CSIRO PUBLISHING. This book was released on 2016-12 with total page 801 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rays are among the largest fishes and evolved from shark-like ancestors nearly 200 million years ago. They share with sharks many life history traits: all species are carnivores or scavengers; all reproduce by internal fertilisation; and all have similar morphological and anatomical characteristics, such as skeletons built of cartilage. Rays of the World is the first complete pictorial atlas of the world’s ray fauna and includes information on many species only recently discovered by scientists while undertaking research for the book. It includes all 26 families and 633 valid named species of rays, but additional undescribed species exist for many groups. Rays of the World features a unique collection of paintings of all living species by Australian natural history artist Lindsay Marshall, compiled as part of a multinational research initiative, the Chondrichthyan Tree of Life Project. Images sourced from around the planet were used by the artist to illustrate the fauna. This comprehensive overview of the world’s ray fauna summarises information such as general identifying features and distributional information about these iconic, but surprisingly poorly known, fishes. It will enable readers to gain a better understanding of the rich diversity of rays and promote wider public interest in the group. Rays of the World is an ideal reference for a wide range of readers, including conservationists, fishery managers, scientists, fishers, divers, students and book collectors.
