EBookClubs

Read Books & Download eBooks Full Online

EBookClubs

Read Books & Download eBooks Full Online

Book Stock Assessment of Northern Cod NAFO Divisions 2J3KL in 2018

Download or read book Stock Assessment of Northern Cod NAFO Divisions 2J3KL in 2018 written by Canadian Science Advisory Secretariat and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Stock Assessment of Northern Cod NAFO Divisions 2J3KL in 2018

Download or read book Stock Assessment of Northern Cod NAFO Divisions 2J3KL in 2018 written by and published by . This book was released on 2018 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Stock Assessment of Northern Cod NAFO Divisions 2J3KL in 2019

Download or read book Stock Assessment of Northern Cod NAFO Divisions 2J3KL in 2019 written by Canadian Science Advisory Secretariat and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Stock Assessment of Northern Cod NAFO Divisions 2J3KL in 2019

Download or read book Stock Assessment of Northern Cod NAFO Divisions 2J3KL in 2019 written by and published by . This book was released on 2019 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Stock Assessment of Northern Cod NAFO Divs 2J3KL in 2016

Download or read book Stock Assessment of Northern Cod NAFO Divs 2J3KL in 2016 written by and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: INTRODUCTION History of the Fishery Catches of northern cod increased during the 1960s to a peak of over 800,000 t in 1968, declined steadily to a low of 140,000 t in 1978, increased to about 240,000 t through much of the 1980s, and then declined rapidly in the early 1990s in advance of a moratorium on directed fishing in 1992 (Fig. [...] The Scientific Council of the Northwest Atlantic Fisheries Organization (NAFO) reported that the annual catches of cod by non-Canadian fleets outside the 200 nautical mile limit on the Nose of the Grand Bank (Div. [...] The offshore biomass of cod has increased in most of the stock area in the past decade, except in southern 3L. [...] An update of the data used to estimate the harp seal inputs for this study was presented; the estimate of abundance of harp seals is lower than the estimate used in the analysis, and the contribution of Atlantic cod to the diet has remained stable. [...] In the 2015 survey, most of the abundance (87%) and biomass (84%) is located in the northern portion of the stock area (Divs.

Book An Assessment of the Cod Stock in NAFO Divisions 2J3KL

Download or read book An Assessment of the Cod Stock in NAFO Divisions 2J3KL written by and published by . This book was released on 1992 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This assessment of the cod stock in area 2J3KL (southern Labrador to northern Grand Banks) begins with a description of the cod fishery, including historical data & its status in 1992, and of environmental conditions relevant to the fishery in 1991. It then provides information on catch & weight at age derived from the commercial catch; summarizes research vessel survey data from trawl surveys & hydroacoustic surveys; analyzes catch rates for potential use as abundance indicators; estimates stock parameters using various indices; and presents stock assessment results with regard to fishing mortality, stock abundance, and recruitment. The final section provides a prognosis for the cod stock.

Book Stock Assessment of Northern Cod NAFO Divs 2J3KL in 2016

Download or read book Stock Assessment of Northern Cod NAFO Divs 2J3KL in 2016 written by Fisheries and published by . This book was released on 2016 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Northern NAFO Divs 2J3KL Cod Stock Update

Download or read book Northern NAFO Divs 2J3KL Cod Stock Update written by and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A conservation limit reference point (LRP) was established for Northern cod in 2010 (DFO 2010) and is defined as the average spawning stock biomass (SSB) during the 1980s. This reference point defines the boundary between the critical and cautious zones within the Precautionary Approach (PA) framework (DFO 2009) and defines the stock level below which serious harm is occurring. The most recent full assessment (March, 2013) concluded that the spawning stock biomass (SSB) in 2012 was 15% of the LRP. A subsequent stock update (March 2014) with additional data from 2013 indicated the three-year average (2011-13) SSB at that time was 18% of the LRP; at these levels the stock is considered to have suffered serious harm and the ability to produce good recruitment is seriously impaired. The scientific advice from the most recent full assessment (DFO 2013) and subsequent stock update (DFO 2014) stated that removals should be kept low to promote stock growth.

Book Assessment of the Cod Stock in NAFO Divisions 2J 3KL

Download or read book Assessment of the Cod Stock in NAFO Divisions 2J 3KL written by G. R. Lilly and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The status of the 2J+3KL cod stock is updated based on catch rates from the re-opened fishery in the inshore and an additional year of research bottom-trawl surveys, prerecruit surveys, acoustic surveys in specific areas, sentinel surveys and returns from tagging studies. The size of the stock as a whole and the size of incoming year-classes remain low relative to levels in the 1980s. On the basis of the current distribution of fish and new information on genetics, it was concluded that information on stock status should be provided for the inshore and offshore separately. In the offshore, biomass remains extremely low. There are very few fish larger than 50 cm and older than age 5. In the inshore, sentinel surveys and the commercial fishery have found very few fish in 2J and north of White Bay in 3K. From White Bay to the southern boundary of the stock, fish exist in sufficient density to enable moderate to high catch rates in some times and places. Catch rates in the gillnet sentinel surveys increased from 1995 to 1998 and declined by half from 1998 to 1999. The biomass calculated from tag returns and catches was estimated to be at most 55,000 t in the inshore of 3K and northern 3L. An estimate could not be produced for southern 3L because of the strong seasonal contribution of fish from 3Ps.

Book Northern NAFO Divs 2J3KL Cod Stock Update

Download or read book Northern NAFO Divs 2J3KL Cod Stock Update written by Canadian Science Advisory Secretariat and published by . This book was released on with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: A conservation limit reference point (LRP) was established for Northern cod in 2010 (DFO 2010) and is defined as the average spawning stock biomass (SSB) during the 1980s. This reference point defines the boundary between the critical and cautious zones within the Precautionary Approach (PA) framework (DFO 2009) and defines the stock level below which serious harm is occurring. The most recent full assessment (March, 2013) concluded that the spawning stock biomass (SSB) in 2012 was 15% of the LRP. A subsequent stock update (March 2014) with additional data from 2013 indicated the three-year average (2011-13) SSB at that time was 18% of the LRP; at these levels the stock is considered to have suffered serious harm and the ability to produce good recruitment is seriously impaired. The scientific advice from the most recent full assessment (DFO 2013) and subsequent stock update (DFO 2014) stated that removals should be kept low to promote stock growth.

Book An Assessment of the Cod Stock in NAFO Divisions 2J 3KL

Download or read book An Assessment of the Cod Stock in NAFO Divisions 2J 3KL written by P. A. Shelton and published by . This book was released on 1996 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book An Assessment of the Cod Stock in NAFO Divisions 2J 3KL

Download or read book An Assessment of the Cod Stock in NAFO Divisions 2J 3KL written by G. R. Lilly and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Review of Northeast Fishery Stock Assessments

Download or read book Review of Northeast Fishery Stock Assessments written by National Research Council and published by National Academies Press. This book was released on 1998-04-17 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collapse of cod, flounder, and haddock fish stocks in the Northeast United States has caused widespread concern among managers and fishers in the United States and Canada. The diminishing stocks have forced managers to take strict regulatory measures. Numerous questions have been raised about the adequacy of stock assessment science used to evaluate the status of these stocks and the appropriateness of the management measures taken. Based on these concerns, Congress mandated that a scientific review of the methodology and data used to evaluate these stocks be conducted. In this volume, the committee concludes that although there are improvements to be made in data collection, modeling uncertainty, and communicating between fishers, managers, and scientists, the scientific methods used in the Northeast stock assessments are sound. Recommendations are made on how the stock assessment process can be improved.