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Based on the results of a full-scale otolith exchange held in 2014, the Working Group on Biological Parameters (WGBIOP 2015) identified the need for an age reading workshop on European Anchovy otoliths (WKARA2). This workshop (chaired by Andres Uriarte, Spain, Begoña Villamor, Spain and Gualtiero Basilone, Italy), was held in Pasaia, Gui-puzcoa (Spain) from the 28 November to 2 December 2016. Five countries took part in this workshop (Spain, Italy, Croatia, Greece and Tunisia), with a total of 16 participants from 9 laboratories. In total 17 areas/stocks were analysed (4 from the Atlantic area and 13 from Mediterranean Sea) The aim of this workshop was to review the information on age determination, discuss the results of the previous exchange (2014), review the validation methods existing on these species, clarify the interpretation of annual rings and update the age reading pro-tocol and a reference collection of well-defined otoliths. Age validation studies, in the Bay of Biscay and preliminary validation studies in Divi-sion 9a, Alboran Sea and Strait of Sicily areas were presented, including a compilation of age validation studies of this species as well in the literature. There are several ar-eas/stocks in which validations of the anchovy annual age determination have not been done yet. Due to the poor percentage of agreement achieved in the 2014 Exchange (mean agree-ment of 66%; mean CV of 58%), the workshop proceeded with a detailed and joint dis-cussion on the growth patterns shown by otoliths from the different areas to find out the major reasons for discrepancies in age determination among readers. At the same time, the joint discussion allowed a better understanding of the pattern of otolith growth in-crements by areas to improve the guidelines for their interpretation. The discussions on examples among otoliths which generated discrepancies in the age determination led to conclude that there were two major sources of disagreements: a) Divergent otolith inter-pretation: different interpretations of the marks, growth bands and edges in terms of their conformity with the expected growth pattern of the anchovies, seasonal formation of the otolith by ages and most common checks. and b) wrong application of the age allocation Rules: it was evidenced during the workshop that for the birthdate first July (or first June) in some cases the age determination rule was not being correctly applied during the first half of the year (from January to June). Following the workshop discussions there has been a progressive change in the percep-tion of the growth pattern applicable to these anchovy otoliths in many areas which led to some revisions of the otolith interpretation and assigned ages, by which growth at ages 0 and 1 are far prominent than at older ages and the occurrence of checks became more frequently admitted. Furthermore, there have been evidences that the age determination rules have in some instances been inconsistently applied. All these evidences led to con-clude on the need to review past age determinations. Although this task should be de-layed until running an exchange in 2018 to be sure that all the readers apply the protocol and the current criteria of this workshop coherently, since current criteria would change the otoliths interpretation and the age determination in many areas. In addition, for the Mediterranean regions the convenience of midyear birthdates was put in question in comparison with the simplicity of the conventional birthdates at first of January (as these anchovies are in the northern hemisphere). As a corollary of the former statements, intercalibration exercises by areas, for the differ-ent countries taking part in the age reading of the same exploited stock, are still required. Finally, this Workshop adopted a common protocol for all areas in order to standardize the anchovy age assignments and to improve the coherence of the age estimates. An agreed collection of otoliths by areas were produced and upload to the Age Readers Fo-rum.

This working document provides a brief description of the survey, laboratory analysis and estimation procedures used to obtain the Gulf of Cadiz anchovy SSB by DEPM for 2014 in the South-Atlantic Iberian Stock. Results are preliminary, because the estimation of the spawning fraction is not available yet.

The present working document summarises the main results from the Spanish (pelagic ecosystem‐) acoustic survey conducted by IEO between 2nd and 13th August 2013 in the Portuguese and Spanish shelf waters (20‐200 m isobaths) off the Gulf of Cadiz onboard the R/V “Cornide de Saavedra”. The survey dates were somewhat delayed in relation to the usual ones and to the anchovy (Engraulis encrasicolus) peak spawning as well. Abundance and biomass estimates are given for all the mid‐sized and small pelagic fish species susceptible of being acoustically assessed according to their occurrence and abundance levels in the study area. The distribution of these species is also shown from the mapping of their back‐scattering energies. The bulk of the anchovy population was concentrated in the Spanish shelf, with a residual nucleus to the west of Cape Santa Maria. A delay of the usual survey dates may be the reason of a higher relative importance of smaller anchovies in the population as a probable consequence of the incorporation of the first waves of recently recruited juveniles to the adult population. The total biomass estimated for anchovy was 8.5 thousand tonnes (609 million fish), the lowest estimate in its series. Sardine showed a distribution pattern almost complementary to that described for anchovy, with higher densities occurring over the inner‐middle shelf of both extremes of the surveyed area, mainly west to Cape Santa Maria, and in shallower waters than anchovy. Sardine yielded a total of 9.7 thousand tonnes (232 million fish). The 2013 sardine estimate was also the lowest one in its series and corroborates a clear recent decline in the population which has also been evidenced by the PELAGO surveys. Chub mackerel was present all over the surveyed area although showed a more “oceanic” distribution in the westernmost waters. The species was the most important in terms of assessed biomass, rendering estimates of 31.3 thousand tonnes (333 million fish). Acoustic estimates for jack and horse‐mackerel species (Trachurus spp.), and bogue (Boops boops) are also given in the WD. No acoustic estimates either for mackerel S. scombrus or round sardinella (Sardinella aurita) were computed because their incidental occurrence in the study area during the survey.

El auge de circuitos electrónicos de baja potencia o que funcionan sin conexión a la red explica la importancia del desarrollo de campos como el energy harvesting o recolección de energía ambiental. Debido a la baja carga de energía generada en el ambiente es necesario buscar el máximo rendimiento de los elementos que se encargarán de recolectar esta energía. Uno de los fenómenos que permite esta recolección ambiental es el efecto piezoeléctrico. En el entorno en el que nos encontramos hay diferentes frecuencias, por lo que es muy importante encontrar el material idóneo para optimizar la recolección de la energía presente en el ambiente en el que se esté trabajando. La fase inicial del proyecto consiste en el diseño y realización de una tarjeta que permita caracterizar de forma automatizada y eficiente el elemento, o elementos, piezoeléctrico. La segunda fase del proyecto consiste en ampliar una aplicación LabVIEW® desarrollada con anterioridad añadiendo la función de la caracterización del aprovechamiento eléctrico. Esta nueva función devuelve como resultado final los valores más significativos del aprovechamiento eléctrico, además de presentar los resultados de forma gráfica. La segunda fase del proyecto consiste en ampliar una aplicación LabVIEW® desarrollada con anterioridad añadiendo la función de la caracterización del aprovechamiento eléctrico. Esta nueva función devuelve como resultado final los valores más significativos del aprovechamiento eléctrico, además de presentar los resultados de forma gráfica. Finalizada la etapa del proyecto que permite la toma de medidas automatizada se procede a realizar dichas medidas. Primero y haciendo uso de la aplicación se repetirán las medidas realizadas en el proyecto nombrado anteriormente pero utilizando un material de soporte diferente. Una vez que se hayan comparado las diferencias entre un material u otro se procederá al montaje de una nueva estructura que permitirá añadir hasta tres elementos piezoeléctricos más. La primera parte de la caracterización consistirá en la obtención de la frecuencia de resonancia de cada uno de los elementos piezoeléctricos que conforman la estructura para finalmente realizar sus medidas de aprovechamiento eléctrico probando distintas formas de asociarlos haciendo uso de la tarjeta energy harvesting. ABSTRACT: The rise of low-power or off-grid electronic circuits explains the importance of the development of fields such as energy harvesting. Due to the low energy charge generated in the environment, it is necessary to seek the maximum efficiency of the elements that will harvest this energy. One of the phenomena that allows this environmental harvesting is the piezoelectric effect. In the environment in where we find ourselves there are different frequencies, so it is very important to find the ideal material to optimize the collection of the energy present in the environment in which we are working. The initial phase of the project consists on the design and realization of a board that allows automated and efficient characterization of the piezoelectric element or elements. The second phase of the project consists on expanding a previously developed LabVIEW application by adding the function of characterizing the electrical performance. This new function returns the most significant values Once the stage of the project that allows automated measurements to be taken has been completed, the measurements are taken. First, using the application, the measurements taken in the above-mentioned project will be repeated, but using a different support material. As soon as the differences between one material and the other have been compared, a new structure will be assembled, which will allow up to three more piezoelectric elements to be added. The first part of the characterization will consist on obtaining the resonance frequency of each of the piezoelectric elements that make up the structure to finally measure their electrical performance by testing different ways of associating them using the energy harvesting board.

El propósito general de este proyecto es llevar a cabo el diseño, mediante la utilización de sistemas y componentes existentes en el mercado, de un Sistema de Alimentación Ininterrumpida (SAI) de potencia mediana-grande destinado a la alimentación de equipos de Telecomunicación alimentados en tensiones de 230Vca, -48Vcc y +24Vcc. El SAI es de la máxima fiabilidad posible, dispone de tolerancia a fallo, es compacto, modular, ampliable en potencia, del máximo rendimiento posible, optimiza su explotación, tanto localmente como remotamente, disponiendo de telesupervisión del funcionamiento de todos sus componentes, y telemando (apertura y cierre remotos) de todos los circuitos de alimentación a las cargas alimentadas por él. Para conseguir los objetivos marcados se analizarán los equipos y componentes existentes en el mercado capaces de formar parte del SAI y que dispongan de las mejores prestaciones en relación con los objetivos que se persiguen. La metodología empleada consiste en dividir el Sistema de Alimentación en distintos Bloques, que ensamblados e interconectados entre sí, permitan configurarlo cumpliendo con los objetivos. Todos los equipos y componentes seleccionados para la configuración de los distintos Bloques son de la máxima fiabilidad y rendimiento posibles. El cumplimiento de los objetivos marcados para el SAI permite obtener un ahorro económico, tanto en costes de energía consumida de la Red de la que se alimenta, (dada la optimización del rendimiento y la minimización de las pérdidas en potencia con la consecuencia de reducción de las necesidades de refrigeración de la instalación), en los costes relacionados con el personal de explotación y mantenimiento (dada la facilidad de explotación y reparación), y en los costes relacionados con el espacio ocupado por el Sistema en la instalación donde se ubique (dado su tamaño compacto). La optimización del rendimiento y la minimización de las pérdidas de potencia llevan consigo una reducción de las emisiones de CO2. Con el SAI desarrollado se han conseguido de una forma satisfactoria todos los objetivos descritos anteriormente. Abstract: The general purpose of this project is to design, using existing systems and components in the market, a medium-large power Uninterrupted Power Supply (UPS) for the supply of Telecommunication equipment powered by voltages of 230Vac, -48Vcc and +24Vcc The UPS is of maximum reliability, has fault tolerance, is compact, modular, expandable in power, of the maximum possible efficiency, optimizes its operation, both locally and remotely, having telesupervision of the operation of all its components, and remote control of all the circuits that feed the loads. To achieve the objectives, the equipment and components existing in the market, capable of forming part of the UPS, which have the best characteristics, will be analyzed. The methodology used consists of dividing the UPS into different subsystems, which, assembled and interconnected, allow it to be configured in accordance with the objectives. All equipment and components selected for the configuration of the different subsystems are of maximum reliability and maximum efficiency. The fulfillment of the objectives set for the UPS allows obtaining an economic saving in energy costs consumed by the Electrical Network from which it is fed (given the optimization of the performance and the minimization of the potential losses with the consequence of reducing the cooling needs of the installation), in the costs related to the maintenance personnel (given the ease of operation and repair), and in the costs related to the space occupied by the System in the installation where it is located (given its compact size ). The optimization of the performance and the minimization of the losses of power entail a reduction of the CO2 emissions. With the UPS developed all the objectives described above have been achieved.