Browsing by Author "Garrido, Susana"
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- ESTADO DOS STOCKS EM 2020 E ACONSELHAMENTO CIENTÍFICO PARA A SUA GESTÃO EM 2021Publication . Costa, Ana; Rocha, Alberto; Pereira, Bárbara; Maia, Catarina; Chaves, Corina; Silva, Cristina; Rosa, Daniela; Feijó, Diana; Mendes, Hugo; Farias, Inês; Figueiredo, Ivone; Wise, Laura; Gaspar, Miguel B.; Lagarto, Neide; Gonçalves, Patrícia; Lino, Pedro; Alpoim, Ricardo; Coelho, Rui; Garrido, Susana; Moura, Teresa; Stratoudakis, Yorgos; Instituto Português do Mar e da Atmosfera, I.P.This report presents the stock assessment results for the species exploited by Portugal in 2020 and the scientific advice for their management in 2021. For each resource the stock distribution area, the source for the scientific advice, the biological reference points, the state of exploitation and scientific advice and the management measures.
- O LABORATÓRIO DE ESCLEROCRONOLOGIA E OS ESTUDOS DE IDADE E CRESCIMENTO DE RECURSOS DA PESCAPublication . Farias, Inês; Soares, Eduardo; Moreno, Ana; Ferreira, Ana Luísa; Silva, Andreia; Serra-Pereira, Bárbara; Dinis, David; Morais, Delfina; Silva, Dina; Santos, Eduardo; Meneses, Isabel; Ferreira, Maria João; Lagarto, Neide; Gonçalves, Patrícia; Alpoim, Ricardo; Dores, Sandra; Garrido, Susana; Moura, Teresa; Azevedo, Manuela; Figueiredo, Ivone; Instituto Português do Mar e da AtmosferaThe Laboratory of Sclerochronology and the age and growth studies of fishing resources A brief description of the growth studies developed by IPMA, I.P. is given in this report, with emphasis on the halieutic species currently studied both within the scope of the National Programme of Biological Sampling (under the EU/DG Fisheries’ Data Collection Framework (DCF)) as of other research projects and research lines of interest for the Institute. With the aim of disseminating the importance of the multiple growth studies and of their application to improve the knowledge on the biology and dynamics of the commercially exploited species, a summary of the techniques and methodologies applied in the Laboratory of eclerochronology is included.
- Modelação ecossistémica: o papel da sardinha no ecossistema IbéricoPublication . Dorota Szalaj; Wise, Laura; Silva, Alexandra; Garrido, Susana; Instituto Português do Mar e da AtmosferaThe national project SARDINHA2030, initiated in January 2024, aims to develop research that allows understanding and better predicting the pressures and impacts of various components of the pelagic ecosystem, contributing to the sustainability and resilience of the fisheries resources involved in purse seine fishery. Among other tasks, directly related to researching the dynamics of populations of target species in the fishery and the factors influencing their variability, it is intended to include ecosystem information in the development of harvest strategies for sustainable purse seine fishery’s management. To achieve this objective, it will be necessary to assess the impact of interspecific relationships and fishing on the combined dynamics of pelagic fish stocks, estimating trophic indicators and biological reference points that incorporate ecosystem dynamics. This document explores information regarding the role of sardine in the Atlantic Iberian ecosystem, using as basis the ecosystem models developed for the distribution area of the Iberian sardine. It compares the natural mortality assumed in the assessment model with the mortality estimated in the ecosystem model of the Portuguese continental shelf, evaluates the role of sardines as a key low trophic level species and estimates the value of sardine biomass that is needed to ensure the ecosystem sustainability. During the project, the ecosystem model will be updated, revising diet matrices to represent as faithfully as possible the diets of all ecosystem organisms, considering ontogenetic variations in diet for the most relevant ones, especially those transitioning from an exclusively planktivorous diet to a piscivorous diet. This ecosystem model will support the sustainable exploitation of the low trophic level species and contribute to ensuring that the impact of fishing on exploited species does not negatively affect the remaining components of the ecosystem.