48 research outputs found

    STRENGTHENING REGIONAL COOPERATION IN FISHERIES DATA COLLECTION

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    fishPi was a research project with the aim of “Strengthening regional cooperation in the area of fisheries data collection”. The project brought together over 40 experts from 13 scientific institutes in 12 countries (10 member states (MS)) and two internationally recognised survey design experts. It was funded by EU MARE grant MARE/2014/19, with a 14 month timeline commencing in April 2015. This project has trialled the way sampling designs would be developed in a regional setting and showed that collaboration and consultation is required at face to face meetings through regional groups that focus on a particular group of fisheries. The project was the first step in this process and one of the main outcomes is the framework to take the process forward; developing data formats, data sharing agreements and easily accessible software for data sharing, checking and analysis, and for the simulation testing of sampling designs.European Unio

    Landsat 9 Thermal Infrared Sensor 2 Architecture and Design

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    The Thermal Infrared Sensor 2 (TIRS-2) will fly aboard the Landsat 9 spacecraft and leverages the Thermal Infrared Sensor (TIRS) design currently flying on Landsat 8. TIRS-2 will provide similar science data as TIRS, but is not a buildto-print rebuild due to changes in requirements and improvements in absolute accuracy. The heritage TIRS design has been modified to reduce the influence of stray light and to add redundancy for higher reliability over a longer mission life. The TIRS-2 development context differs from the TIRS scenario, adding to the changes. The TIRS-2 team has also learned some lessons along the way

    Scientific Council June Meeting 2014

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    French data processing for assessment working groups

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    During the flatfish benchmark held in ICES in 2020 (WKFlatNSCS), questions arose on the modifications made recently on two key fields of fisheries data processed by France for providing data to stock assessment groups. These two fields are: ‱ the gap filling method in Age Length Keys ‱ the effort aggregates in support of discards raising procedure Updates of procedures, improvements of R scripts and coding are done permanently, and some of the modifications made in 2019 at the demand of WGNSSK experts had unraveled issues that went undetected until data submission of sol.27.7d full time series for WKFlatNSCS benchmark. These issues may have also impacted the Celtic Sea benchmark (WKCELTIC) and to a lesser extent the WKDEM earlier in the year.  The document is meant to bring clarity in the procedure used recently, the differences it made on the final estimates of discards and age structures, and propose a way to fix the issues.Lors du benchmark sur les poissons plats organisĂ© par le CIEM en 2020 (WKFlatNSCS), des questions ont Ă©tĂ© soulevĂ©es sur les modifications apportĂ©es rĂ©cemment sur deux domaines clĂ©s des donnĂ©es de pĂȘche traitĂ©es par la France pour fournir des donnĂ©es aux groupes d'Ă©valuation des stocks. Ces deux domaines sont les suivants - la mĂ©thode de comblement des lacunes dans les clĂ©s taille-Ăąge - les agrĂ©gats d'effort Ă  l'appui de la procĂ©dure d'Ă©lĂ©vation des rejets Les mises Ă  jour des procĂ©dures, les amĂ©liorations des scripts R et du codage sont effectuĂ©es en permanence, et certaines des modifications apportĂ©es en 2019 Ă  la demande des experts du WGNSSK ont gĂ©nĂ©rĂ© des problĂšmes qui n'avaient pas Ă©tĂ© dĂ©tectĂ©s jusqu'Ă  la soumission des donnĂ©es de la sĂ©rie temporelle complĂšte sol.27.7d pour le benchmark WKFlatNSCS. Ces problĂšmes peuvent Ă©galement avoir eu un impact sur le benchmark des gadidĂ©s de la mer Celtique (WKCELTIC) et, dans une moindre mesure, sur le WKDEM en dĂ©but d'annĂ©e.  Le document vise Ă  clarifier la procĂ©dure utilisĂ©e rĂ©cemment, les diffĂ©rences qu'elle a pu produire sur les estimations finales des rejets et des structures d'Ăąge, et Ă  proposer une maniĂšre de rĂ©soudre ces problĂšmes

    Influence des caractĂ©ristiques des navires et de leur polyvalence sur la capacitĂ© de pĂȘche dans la baie de Seine et le Cotentin : IntĂ©rĂȘts pour la gestion des activitĂ©s halieutiques

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    The topic of this work was to study the determinism of fishing capacity for the Bay of Seine and Cotentin (English Channel, France) fishing fleets in order to improve fishing effort management methods. The problem is that, due to the lack of landings data, it is not possible to use boats catches for such a study. It is the reason why the data of a 1991's investigation on practical way of fishing have been used to model fishing capacity by mĂ©tier without taking landings in account. In spite of some limits of this method, these analysis have reached to learnings about the influence of ship properties and strategy on their fishing capacity. The role of both the ship size and the number of fishermen on board have been pointed out. On the other hand, the fact that the more a mĂ©tier is important for a boat and the more his monthly fishing capacity is high for this mĂ©tier, as been demonstrated. Then, differences between the two sorts of mĂ©tier has been shown, especially the facts that the amounts of steady gears depends on ship strategy and that fishing time depends on ship size for towing gears. Then, these models have been used to compute the whole fishing capacity by mĂ©tier on this area. Finally, these results have been discussed in regard with fishing effort management, the main conclusion of this discussion being that, to be efficient, management measures have to be different for steady and towing gears and have to take fishermen adaptability in account.Ce travail a pour objet d'Ă©tudier les facteurs influant sur la capacitĂ© de pĂȘche des navires dans la baie de Seine et le Cotentin. Une meilleure connaissance de ces facteurs permettrait de choisir des mĂ©thodes appropriĂ©es pour gĂ©rer les activitĂ©s halieutiques. Le problĂšme d'une telle Ă©tude vient du fait que, sur cette zone, les captures sont mal connues. Il n'est donc pas possible de s'appuyer sur les statistiques de pĂȘche pour effectuer cette Ă©tude. C'est pourquoi, les donnĂ©es d'une enquĂȘte dĂ©crivant les pratiques de pĂȘche, rĂ©alisĂ©e en 1991 sur une fraction des navires, ont Ă©tĂ© utilisĂ©es afin de modĂ©liser, mĂ©tier par mĂ©tier, la capacitĂ© de pĂȘche des flottilles. MalgrĂ© certaines limites de la mĂ©thode, ce travail a permis d'Ă©tudier les paramĂštres qui dĂ©terminent cette capacitĂ©. Ainsi, l'influence conjointe de deux facteurs, les caractĂ©ristiques du navire et le nombre de marins embarquĂ©s, a Ă©tĂ© dĂ©montrĂ©e. Le caractĂšre dĂ©terminant de la stratĂ©gie annuelle des patrons-pĂȘcheurs a aussi Ă©tĂ© mis en Ă©vidence, l'effort mensuel de pĂȘche potentiel pour un mĂ©tier donnĂ© Ă©tant d'autant plus fort que le navire est dĂ©pendant de ce mĂ©tier. Enfin, ces analyses ont dĂ©montrĂ© des diffĂ©rences importantes dans le dĂ©terminisme de la capacitĂ© de pĂȘche entre les deux grandes catĂ©gories de mĂ©tier, les principales Ă©tant l'influence de la polyvalence des navires sur la quantitĂ© d'engins mis en Ɠuvre pour les arts dormants et la relation entre temps de pĂȘche et taille du navire pour les arts traĂźnants. Puis, ces modĂšles ont Ă©tĂ© utilisĂ©s afin de quantifier la capacitĂ© globale de pĂȘche des flottilles et de cartographier les rĂ©sultats. Ces rĂ©sultats ont finalement Ă©tĂ© commentĂ©s dans l'optique d'une gestion de l'effort de pĂȘche. Il en rĂ©sulte notamment que, pour ĂȘtre gĂ©rĂ©s efficacement, les arts dormants et les arts traĂźnants doivent faire l'objet de mesures distinctes et prendre en compte les facultĂ©s d'adaptation des pĂȘcheurs

    Obsvente. Protocole d’échantillonnage biologique de la pĂȘche maritime française dans les criĂ©es

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    L'action Echantillonnages biologiques des captures a pour objet de rĂ©aliser des Ă©chantillonnages en taille des dĂ©barquements des navires de pĂȘche professionnels dans les principaux points de dĂ©barquement en France mĂ©tropolitaine, selon le programme national avalisĂ© par les services de la Commission europĂ©enne et dans le cadre plus gĂ©nĂ©ral de l’action dĂ©diĂ©e et dĂ©nommĂ©e Observation des ventes (acronyme ObsVente). L’objectif est de produire des structures en taille des dĂ©barquements des principales espĂšces commerciales pour les besoins des Ă©valuations de stocks par les Organisations RĂ©gionales de Gestion des PĂȘches (ORGP) et autres instances scientifiques internationales compĂ©tentes (comme le CIEM), conformĂ©ment aux obligations internationales de la CommunautĂ© et de ses États Membres (rĂšglement (CE) N°199/2008, article 20)
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