Management Techniques for Elasmobranch Fisheries - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Management Techniques for Elasmobranch Fisheries write by Food and Agriculture Organization of the United Nations. This book was released on 2005. Management Techniques for Elasmobranch Fisheries available in PDF, EPUB and Kindle. Elasmobranch - describes a group of fish without a hard bony skeleton, including sharks, skates, and rays.
Elasmobranch Biodiversity, Conservation and Management
Elasmobranch Biodiversity, Conservation and Management - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Elasmobranch Biodiversity, Conservation and Management write by Sarah L. Fowler. This book was released on 2002. Elasmobranch Biodiversity, Conservation and Management available in PDF, EPUB and Kindle. 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.
Special Issue: Age and Growth of Chondrichthyan Fishes: New Methods, Techniques and Analysis
Special Issue: Age and Growth of Chondrichthyan Fishes: New Methods, Techniques and Analysis - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Special Issue: Age and Growth of Chondrichthyan Fishes: New Methods, Techniques and Analysis write by John K. Carlson. This book was released on 2007-04-05. Special Issue: Age and Growth of Chondrichthyan Fishes: New Methods, Techniques and Analysis available in PDF, EPUB and Kindle. This volume offers a collection of papers on the quantitative assessment of age and growth in Chondrichthyan fishes. It details new hard parts for assessments of age, such as caudal thorns; new techniques like bomb radiocarbon for validation; and reexaminations of previous age and growth models. It also examines the importance of assessing the precision and accuracy of statistical formulas, analyses, and models used in age and growth studies.
Biology of Skates
Biology of Skates - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Biology of Skates write by David A. Ebert. This book was released on 2008-12-25. Biology of Skates available in PDF, EPUB and Kindle. Skates have become a concern in recent years due to the preponderance of these elasmobranchs that are caught as bycatch or as a directed fishery. This has raised concern because skates have life history characteristics that may make them vulnerable to over-exploitation. It was due to this concern that prompted Drs. David Ebert and James Sulikowski to organize an international symposium on the “Biology of Skates”. The aims and goals of the symposium were to bring together an international group of researchers to meet, discuss, perhaps develop collaborations, and present their most recent findings. The symposium was held over two days, on 13-14 July, 2006, in conjunction with the 22nd annual meeting of the American Elasmobranch Society in New Orleans, LA. A total of 31 authors from four countries contributed 16 papers that appear in this volume. The papers are broadly arranged into four separate categories: systematics and biogeography, diet and feeding ecology, reproductive biology, and age and growth. This is the first dedicated book on the biology of skates. We hope that readers will find this volume of interest and that it helps encourage and stimulate future research into these fascinating fishes.
Tropical Fish Otoliths: Information for Assessment, Management and Ecology
Tropical Fish Otoliths: Information for Assessment, Management and Ecology - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Tropical Fish Otoliths: Information for Assessment, Management and Ecology write by Bridget S. Green. This book was released on 2009-08-07. Tropical Fish Otoliths: Information for Assessment, Management and Ecology available in PDF, EPUB and Kindle. Techniques and theory for processing otoliths from tropical marine fish have developed only recently due to an historic misconception that these organisms could not be aged. Otoliths are the most commonly used structures from which daily, seasonal or annual records of a fish’s environmental history are inferred, and are also used as indicators of migration patterns, home range, spatial distribution, stock structure and life history events. A large proportion of projects undertaken on tropical marine organisms involve removal and processing of calcified structures such as otoliths, statoliths or vertebrae to retrieve biological, biochemical or genetic information. Current techniques and principles have evolved rapidly and are under constant modification and these differ among laboratories, and more particularly among species and within life history stages. Tropical fish otoliths: Information for assessment, management and ecology is a comprehensive description of the current status of knowledge about otoliths in the tropics. This book has contributions from leading experts in the field, encompassing a tropical perspective on daily and annual ageing in fish and invertebrates, microchemistry, interpreting otolith microstructure and using it to back-calculate life history events, and includes a treatise on the significance of validating periodicity in otoliths.
