Consulta: subjectFacets:"Catch rates"
Registros recuperados: 4
Data/hora: 01/06/2024 01:25:06

Assessing Changes in Fisheries Using Fishers&amp;#8217; Knowledge to Generate Long Time Series of Catch Rates: a Case Study from the Red Sea
Provedor de dados: Ecology and Society
Autores: Tesfamichael, Dawit; Fisheries Centre, University of British Columbia; Department of Marine Science, University of Asmara; d.tesfamichael@fisheries.ubc.ca; Pitcher, Tony J.; Fisheries Centre, University of British Columbia; pitcher.t@gmail.com; Pauly, Daniel; Fisheries Centre, University of British Columbia; d.pauly@fisheries.ubc.ca.
The data requirements for most quantitative fishery assessment models are extensive, and most of the fisheries in the world lack time series of the required biological and socioeconomic data. Many innovative approaches have been developed to improve data collection for fisheries. We explored the use of data from fishers&amp;#8217; interviews to estimate time series of approximate &amp;#8220;best&amp;#8221; catch rates. A total of 472 standardized interviews were conducted with 423 fishers along the southern Red Sea coast recording the best catch recalled and the change in average catch rates throughout the fishing career of interviewees. The results showed a decline of best catch rates in all fisheries, ranging from 4% to 10% per year for more than 50...
Tipo: Peer-Reviewed Reports
Palavras-chave: Assessment; Catch rates; Fishers&amp;#8217; Knowledge; Interview; Red Sea; Small-scale fishery; Time series.
Ano: 2014

Improving the definition of fishing effort for important European fleets by accounting for the skipper effect
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Marchal, Paul; Andersen, B; Bromley, D; Iriondo, A; Mahevas, Stephanie; Quirijns, F; Rackham, B; Santurtun, M; Tien, N; Ulrich, Clara.
The scope of this paper is to quantify, for a wide selection of European fisheries, fishing tactics and strategies and to evaluate the benefits of adjusting the definition of. fishing effort using these elements. Fishing tactics and strategies were identified by metiers choices and a series of indices. These indices have been derived to reflect shifts in tactics (within a fishing trip) and in strategies (within a year). The Shannon-Wiener spatial diversity indices of fishing tactics (FT_SW) and strategies (YE_SW) had the greatest impact on catch rates. In particular, FT_SW was always negatively correlated to catch rates. One may anticipate that during a fishing trip, vessels with high FT_SW have been searching fish aggregations for a long time, while...
Tipo: Text
Palavras-chave: Fishing effort; Fishing mortality; Catch rates; GLM modeling; Skipper effect.
Ano: 2006
URL: https://archimer.ifremer.fr/doc/2006/publication-1339.pdf

Etude préalable à la gestion des stocks de crustacés en Bretagne
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Autissier, Isabelle; Coum, Andrée; Cuillandre, Jean Pierre; Veron, Gerard; Latrouite, Daniel.
At the end of the seventies, as fishing abundance (based on Catch Per Unit Effort) in crabs and lobster fishery steadily declined, operating expenses increased, and fishing boats changed strategy (changing metiers, covering larger distance to fishing areas, fishing seasons being extended, ...) professionals and scientists aimed to consider reinforcing management measures. To enlighten and support potential related decisions, the Comité Régional des Pêches et Cultures Marines de Bretagne (Regional Committee for fishing and farming in Brittany), together with the ISTPM (Ifremer since 1984), conducted a survey on the exploited populations and gave a review of the involved Breton fleet. This report shows the results of a survey conducted among fishermen,...
Tipo: Text
Palavras-chave: Landings; Catch rates; Fishing area; Fishing effort; Fleet; Brittany; Edible crab; Lobster; Spider crab; Apport; Rendement; Zone de pêche; Effort de pêche; Flottille; Bretagne; Tourteau; Homard; Araignée.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/1981/rapport-1548.pdf

Update of the French aerial survey index of abundance and first attempt at integrating bluefin tuna school size estimates from video cameras
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Rouyer, Tristan; Miller, S.
Tipo: Text
Palavras-chave: Fishing capacity; Eastern atlantic and mediterranean sea bluefin tuna; Catch rates.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00484/59608/62625.pdf