Download or read book The Status of Thorny Skate Raja Radiata a Non traditional Species in NAFO Divisions 3L 3N 3O and Subdivision 3Ps written by David W. Kulka and published by . This book was released on 1998 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Status of Thorny Skate Amblyraja Radiata Donovan 1808 in NAFO Divisions 3L 3N 3O and Subdivision 3Ps written by David W. Kulka and published by . This book was released on 2003 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Status of Thorny Skate Amblyraja Radiata Donovan 1808 in NAFO Divisions 3L 3N 3O and Subdivision 3Ps written by and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The spring survey, previously used to estimate biomass and abundance, may not include a substantial portion of the population, and thus represents only the portion of the stock that occurs within the surveyed area. [...] Of these, thorny skate (Amblyraja radiata) is dominant, comprising about 90% of the skates caught in research survey trawls on the Grand Banks during 1951-1998, and about 80% of skate species taken in commercial offshore catches on the Grand Banks and northeastern Shelf to the north, 1981-1998 (Kulka et al. [...] Within the managed area of the Grand Banks (NAFO Divisions 3L, 3N, 3O, and Subdivision 3Ps), a relatively continuous distribution and lack of physical barriers suggest that they constitute a single reproductive entity: concentrating on the shallow section of the Grand Banks, and extending from the Tail of the Banks outside of Canada's 200-mile-limit to the southern edge of St. [...] After the change in research survey gear (denoted by a grey bar and a separation in the time series on the x-axis) to Campelen, relative biomass was approximately 2.8 times greater (comparing the average of 1994-1995 and 1996-1997); indicating that the Campelen trawl was considerably more efficient in capturing thorny skate. [...] Most of the thorny skate were found in Divisions 3N, 3O, and Subdivision 3Ps: approximately 60% in the 1970s, and 90% following its decline in the early 1990s.

Download or read book The International Conference on Integrated Fisheries Monitoring Sydney Australia 1 5 February 1999 written by and published by Food & Agriculture Org.. This book was released on 1999 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conference was co-hosted by the governments of Australia and Canada in co-operation with FAO and the support of the National Oceanographic and Atmospheric Administration (NOAA), USA, and the Department of Fisheries, NSW. The purpose of the conference was to address the challenges and opportunities of fisheries monitoring that are common to many fisheries.

Download or read book Case Studies of the Management of Elasmobranch Fisheries written by R. Shotton and published by . This book was released on 1999 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book FAO Fisheries Technical Paper written by and published by . This book was released on 1999 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Case Studies of the Management of Elasmobranch Fisheries written by Food and Agriculture Organization of the United Nations and published by Mitchell Beazley. This book was released on 1999 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the population biology and fishery management of elasmobranchs at regional, national and sub-regional levels - in Atlantic Europe, the United States, the Caribbean, Guatemala, South Africa, Uruguay, the Falkland Islands, the Seychelles, two states in India, the Maldives, Malaysia, Australia, New Zealand, Japan, Fiji and Ecuador. Regional accounts are given of management of Galeorhinus galeus, deepwater sharks and elasmobranch considerations of a tuna commission. NGO elasmobranch activities are described and an analysis of the quality of the relevant data in the FAO Nominal Catches and Landings Data Base. The topics of the resource, fishery and associated species, current status of fisheries and harvesting processes are described together with the evolution of the catch, fleet, fishing effort, commerce, fishery markets and revenues from the fishery. Comments on the economics of the fishery and nature of the workforce are also given. In relation to fisheries administration, management objectives and national fisheries policies are described and the manner of the planning process. Where applicable, the objectives setting process, relevant stakeholders and the handling of management negotiations are noted. The nature of gear restrictions and their effectiveness together with vessel regulations and where they exist, on catch, closed seasons, effort limitations, etc., are described Where management planning occurs, the provision of resource management advice together with a description of the departments involved and management activities are described. Several papers review stock assessment activities plus descriptions and analyses of the biological advice review process with comments on the sustainability of the resource. National accounts describe the relevant law and enforcement processes. The report consists of two parts.

Download or read book An Assessment of Thorny Skate Amblyraja Radiata Donovan 1808 in NAFO Subdivision 3Ps and Divisions 3LNO written by Mark Simpson and published by . This book was released on 2012 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thorny Skate (Amblyraja radiata Donovan, 1808) is a widely distributed species in temperate and Arctic waters of the North Atlantic. In the western Atlantic, Thorny Skates are distributed from Greenland to South Carolina, and in Newfoundland and Labrador waters (NAFO Div. 2GHJ3KLNOPs), Thorny Skates are found across the continental shelf. The primary purpose of this paper is to provide an update of Thorny Skate stock status in Subdiv. 3Ps: especially estimations of stock abundance and distribution, as well as other information on commercial landings and fishing mortality for use by fisheries managers in formulating conservation measures for this stock.--Document.

Download or read book Status of thorny skate Amblyraja radiata Donovan 1808 in NAFO divisions 3L 3N 3O and subdivision 3Ps written by David W. Kulka and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of NAFO Subdivision 3Ps Thorny Skate Amblyraja Radiata written by and published by . This book was released on 2022 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thorny Skate in Divisions 3L 3N 3O and Subdivision 3Ps written by Canada. Department of Fisheries and Oceans. Newfoundland and Labrador Region and published by . This book was released on 2003 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Worldwide Review of Bottom Fisheries in the High Seas written by Alexis Bensch and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2008 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document provides a summary of the current status of high seas bottom fisheries worldwide based on the best information available. The review contains information on the fleets and their fishing activities across nine major oceanic areas. It also informs the implementation of the FAO International Guidelines for the Management of Deep-sea Fisheries in the High Seas by providing background information and highlighting gaps in the available information.

Download or read book Dynamic Geography of Marine Fish Populations written by Alec D. MacCall and published by University of Washington Press. This book was released on 1990 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Offshore Waste Treatment Guidelines written by Canada. National Energy Board and published by [St. John's, N.L.] : National Energy Board. This book was released on 2002 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Climate Change on the Distribution and Abundance of Marine Species in the OSPAR Maritime Area written by Luis Valdés and published by . This book was released on 2008 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Fisheries Science written by Andrew I. L. Payne and published by John Wiley & Sons. This book was released on 2009-01-22 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely book brings readers up to date on the wide range of advances made in fisheries science since the publication in 1957 of On the Dynamics of Exploited Fish Populations (Beverton and Holt), regarded by many fisheries scientists as one of the most important books on fisheries yet published. Traditional fishery subjects covered include historic declines and changes in fishing fleets, fisheries management and stock assessments, data-poor situations, simulation and modelling of fished stocks, fisheries economics, assessing reproductive potential and dispersal of larvae, fisheries for sharks and rays, and use of marine technology. Additionally, related subjects of increasing importance now that ecological approaches to management are coming to the fore are presented. They include benthic ecology, ecosystem changes linked to fishing, life history theory, the effects of chemicals on fish reproduction, and use of sounds in the sea by marine life. Several chapters offer stimulating philosophical discussion of the many controversial areas still existing. This significant book, edited by Andy Payne, John Cotter and Ted Potter and containing contributions by world-renowned fisheries scientists, including many based at Cefas (where Beverton and Holt's original work was carried out) is an essential purchase for fisheries managers and scientists, fish biologists, marine scientists and ecologists. Libraries in all universities and research establishments where fisheries and biological sciences are studied and taught are likely to need copies of this landmark publication.

Download or read book Seamounts written by Tony J. Pitcher and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seamounts are ubiquitous undersea mountains rising from the ocean seafloor that do not reach the surface. There are likely many hundreds of thousands of seamounts, they are usually formed from volcanoes in the deep sea and are defined by oceanographers as independent features that rise to at least 0.5 km above the seafloor, although smaller features may have the same origin. This book follows a logical progression from geological and physical processes, ecology, biology and biogeography, to exploitation, management and conservation concerns. In 21 Chapters written by 57 of the world’s leading seamount experts, the book reviews all aspects of their geology, ecology, biology, exploitation, conservation and management. In Section I of this book, several detection and estimation techniques for tallying seamounts are reviewed, along with a history of seamount research. This book represents a unique and fresh synthesis of knowledge of seamounts and their biota and is an essential reference work on the topic. It is an essential purchase for all fisheries scientists and managers, fish biologists, marine biologists and ecologists, environmental scientists, conservation biologists and oceanographers. It will also be of interest to members of fish and wildlife agencies and government departments covering conservation and management. Supplementary material is available at: www.seamountsbook.info