Download or read book Manual on Sample based Data Collection for Fisheries Assessment written by Per Sparre and published by Food & Agriculture Org.. This book was released on 2000 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual deals with the practical implementation of a routine data collection programme. The data collection programme is developed through a top-down approach, from the identification of the objectives down to the practical recording and management of data obtained from the fishery. The issues are dealth with both through detailed discussion and by using simple examples. The examples are mostly based on situations in tropical fisheries, and in particular, experience has been drawn from developing a data collection programme in Viet Nam. The main questions addressed i n the manual are which fisheries data to collect, where and when to collect them. Only data from commercial marine capture fisheries are considered. The methodologies used are mainly appropriate for a tropical, developing county, with many small (artisanal) vessels and a few large (industrial) vessels. The methodology is the "sample-based approach". The data collection methodology presented attempts to utilize whatever information can be obtained in practice in a developing country.
Download or read book Data and Management Strategies for Recreational Fisheries with Annual Catch Limits written by National Academies of Sciences Engineering and Medicine and published by . This book was released on 2022-04-21 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine recreational fishing is a popular activity enjoyed by more than 9 million Americans annually and is a driver of the American ocean-or blue-economy. To ensure that fish populations are not overexploited, the NOAA Fisheries' Marine Recreational Information Program (MRIP) monitors recreational catch through a variety of in-person, telephone, mail-in, and other surveys. NOAA Fisheries' management of recreational catch also must take into account annual catch limits (ACLs) established to prevent overfishing for all managed species in federal waters. While MRIP has worked to improve recreational catch surveys over the past decade, the surveys were never designed to meet the demands of in-season management of ACLs. In some cases, estimates of harvest have triggered accountability measures such as early season closures and reductions in future recreational ACLs, which have been a source of contention with the recreational fishing community. This report presents approaches for optimizing MRIP data and complementary data for in-season management and considers alternatives for managing recreational fisheries with ACLs to better serve both social and economic management objectives.
Download or read book Guidelines for the Routine Collection of Capture Fishery Data written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 1999 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: "These guidelines aim to help those who design routine data collection programmes, focusing on the relationship between typical questions asked by policy-makers and managers, and the data required for providing reliable answers. Fisheries policy and management objectives, particularly under the precautionary approach, need to be based upon analyses of reliable data. Data are needed to make rational decisions, evaluate the fisheries performance in relation to management activities and fulfil regional requirements. These objectives are achieved using fishery performance indicators. Indicators are used to measure the state of the resource, the performance of fishing controls, economic efficiency, socio-economic performance and social continuity. The primary factor in choosing what data to collect is the link between the necessary operational, biological, economic and socio-cultural indicators and their associated variables. The way in which different data variables are collected needs tobe tailored to the structure of the fishery. The strategy will be strongly influenced by the budget and personnel available, and the degree to which fishers and others co-operate. The programme must identify which variables should be collected through complete enumeration and which can be sampled. Collection methods are influenced by the variable itself, the strategy, collection point and the skill of the enumerator. Once collected, fishery data must be stored securely, but made easily available for analysis, which is achieved through a computer-based data management system, following the basic data processing principles. The implementation of a data collection programme should follow a normal project cycle, developing a new legal and institutional framework as appropriate"--Abstract.
Download or read book A Fishery Data Collection System written by and published by . This book was released on 1983 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Directory of Fishery Data Collection Activities Conducted by the Statistical Surveys Division in the Southeast Region of the United States written by Herbert F. Prytherch and published by . This book was released on 1980 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a result of the Fishery Conservation and Management Act of 1976 and the planning and imposition of Fishery Management Plans in the U.S., the number of requests and demands for historical, current, and new kinds of fishery data has increased dramatically. These demands are often well beyond the ability of present staff to respond, well beyond the limitations of available and anticipated economic resources, and well beyond the limitations of data collection systems presently in use. In such a climate, there is an understandable and reasonable desire to maximize the informational return. However, as noted by Wenk (1972), "the federal role at sea has not been continuous or well planned but has grown in a random succession of separate legislative assignments." For example, the National Marine Fisheries is authorized to collect biological, economic, social, and other data many different statutes (see page. 2). The resulting potential for duplicative effort and inefficiency has been great. In order to fulfill their obligations under such a diversity of authorizations, data collection and management systems often subscribe unnecessarily to a variety of recording, storage, and reporting formats. More importantly, computer technology now makes much of the human time and effort involved in current collection and analysis methodology unnecessary. This report is part of an effort to describe and evaluate the present data collection systems now operating within the SEFC of the NMFS in order 1) to facilitate the flow of information in a more timely and continuous manner, 2) to identify and eliminate unnecessary duplication, 3) to determine those components of the collection and analysis process which may more easily and accurately be accomplished by computers and 4) to recommend for implementation those procedures which seem likely to contribute to a better data collection system.
Download or read book Improving Fish Stock Assessments written by National Research Council and published by National Academies Press. This book was released on 1998-02-27 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean harvests have plateaued worldwide and many important commercial stocks have been depleted. This has caused great concern among scientists, fishery managers, the fishing community, and the public. This book evaluates the major models used for estimating the size and structure of marine fish populations (stock assessments) and changes in populations over time. It demonstrates how problems that may occur in fisheries dataâ€"for example underreporting or changes in the likelihood that fish can be caught with a given type of gearâ€"can seriously degrade the quality of stock assessments. The volume makes recommendations for means to improve stock assessments and their use in fishery management.
Download or read book Improving the Collection Management and Use of Marine Fisheries Data written by National Research Council and published by National Academies Press. This book was released on 2000-12-10 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: Congress has promoted fisheries science for over a century and its involvement in fisheries management took a great leap forward with passage of the Fisheries Conservation and Management Act of 1976. In the past decade, Congress has requested advice from the National Research Council (NRC) on both national issues (e.g., individual fishing quotas and community development quotas) and the assessments related to specific fisheries (Northeast groundfish). This report was produced, in part, in response to another congressional request, this time related to the assessments of the summer flounder stocks along the East Coast of the United States. Following the initial request, the NRC, National Marine Fisheries Service (NMFS), and congressional staff agreed to broaden the study into a more comprehensive review of marine fisheries data collection, management, and use.
Download or read book The European Landing Obligation written by Sven Sebastian Uhlmann and published by Springer. This book was released on 2018-12-19 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book provides a comprehensive examination of the European Landing Obligation policy from many relevant perspectives. It includes evaluations of its impacts at economical, socio-cultural, ecological and institutional levels. It also discusses the feasibility and benefits of several potential mitigation strategies. The book was timely published, exactly at the time where the Landing Obligation was planned to be fully implemented. This book is of significant interest to all stakeholders involved, but also to the general public of Europe and to other jurisdictions throughout the world that are also searching for ways to deal with by-catch and discard issues.
Download or read book Review of fishery information and data collection systems in China written by and published by Food & Agriculture Org.. This book was released on with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Data collection systems and methodologies for the inland fisheries of Europe written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2020-03-01 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inland fisheries are important sources of ecosystem services contributing to human diet, health, well-being and economies. The evaluation of the importance and value of inland fisheries is one of the biggest challenges for its development. To develop the inland fisheries data collection, we reviewed the current status of data collection in European countries and provided five detailed country examples. The specific country examples give detailed description of data collection, focusing on: 1) country-wide postal survey (Finland) and 2) web-based survey and development of citizen science approach (Denmark). Example 3) from Ireland focuses on recreational salmonid fishing and conservation limits. There are two examples based on logbook returns: 4) one strict system, which is considered to work well (Czech Republic) and 5) one less controlled system, currently not producing reliable results, and under development (Croatia). Case studies were provided in each country example. Finally, the authors discuss the important aspects of inland fisheries data collection and review the methods to provide recommendations.
Download or read book A Fishery Data Collection System written by and published by . This book was released on 1983 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geographic Information Systems in Fisheries written by William Lawrence Fisher and published by . This book was released on 2004 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summarizes a growing body of information on applications of geographic information systems (GIS) in fisheries research and management.
Download or read book Fisheries Techniques written by Brian R. Murphy and published by . This book was released on 1996 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustainable Fishery Systems written by Anthony Charles and published by John Wiley & Sons. This book was released on 2008-04-30 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive attempt to adopt an 'integrated' interdisciplinary approach to the study of fisheries. Fisheries are discussed as holistic 'systems', with emphasis on their structure, operation and dynamics. The book's interdisciplinary approach is applied to an analysis of problems faced in pursuing 'sustainable fisheries', with emphasis on six dominant themes: sustainability, uncertainty, complexity, conflict, fishing rights and the nature of management. Within this discussion, several major directions in current fishery thinking are explored, notably the precautionary approach, the ecosystem approach, co-management, and robust management for resilient fisheries.
Download or read book Good practices guidelines for data collection systems to support sustainable inland and recreational fisheries in the Western Balkans region written by Visser, T.A.M, Valbo-Jorgensen, J., Chomo, V. and published by Food & Agriculture Org.. This book was released on 2021-02-26 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: These guidelines illustrate recommendations for good practices on data collection in Eastern European inland fisheries, and in particular the Western Balkan region, based on the methodologies and approaches used in countries throughout Europe and from FAO experience of inland fisheries in other regions. They provide guidance on the options available to inland fishery managers based on particular circumstances i.e. commercial fishing or recreational use, and they are especially relevant for assisting the economies-in transition in Europe, Caucasus and Central Asia. These guidelines are not an overarching work on inland fisheries management, nor do they provide advice on the environmental aspects or competing uses of inland water bodies. They focus on issues of data collection to support fishery managers whether they be government agencies, fishers or angler associations co-responsible for the management of inland resources in European rivers and lakes.
Download or read book Tanzania Improvement of the Fishery Data Collection System written by and published by . This book was released on 1985 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sample based Fishery Surveys written by Constantine Stamatopoulos and published by Fao. This book was released on 2002 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook summarises the experience gained over recent years in fishery statistical development by the Fishery Information, Data and Statistics Unit of the FAO, and provides guidance for developing and implementing cost-effective and sustainable fishery surveys. The methodological and operational concepts discussed apply equally to marine and inland capture fisheries. The emphasis is placed on the understanding and interpretation of the statistics, rather than on the computations producing them.
