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	Provedor de dados ArchiMer (4) Autor Gatti, Paul (1) Menu, Clara (1) Queiros, Quentin (1) Rouyer, Tristan (1) Palavra-chave Life history traits (4) Traits d'histoire de vie (4) Bay of Biscay (1) Bioenergetics (1) Bioénergétique (1) Bottom-Up processes (1) Couleur du bruit environnemental (1) Cycle de vie (1) Dynamic Energy Budget theory (1) English Channel (1) Engraulis encrasicolus (1) Environmental noise (1) Experiment (1) Expérience (1) Fish stocks variability (1) Fisheries (1) Golfe de Gascogne (1) Golfe du Lion (1) Gulf of Lion (1) Individual based model (1) Mais... Tipo do documento Text (4) Ano 2020 (1) 2019 (1) 2016 (1) 2008 (1) País France (4) Idioma Francês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Implications de la couleur du bruit environnemental sur la variabilité des stocks halieutiques exploités ArchiMer Rouyer, Tristan. The origin of fish stocks variability is a key question in fisheries science. The exploitation indeed has an important effect in terms of biomass reduction, but environmental forcing is of central interest as it affects numerous key biological processes. Recent theoretical results have shown that the nature of the environmental fluctuations, the environmental noise, has important ecological consequences on populations and particularly on their fluctuations. In addition the effects of exploitation, that are not a simple removal of individuals but also profoundly modifies the demography, the structure and the trophic interactions of fish stocks, can interact with environmental effects. Through an extensive analysis of time series we aim at understanding the... Tipo: Text Palavras-chave: Fisheries; Life history traits; Fish stocks variability; Environmental noise; Wavelets; Time series; Pêche; Traits d'histoire de vie; Variabilité des stocks halieutiques; Couleur du bruit environnemental; Ondelettes; Séries temporelles. Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/these-6596.pdf Mécanismes sous-jacents du contrôle bottom-up des populations de sardines dans le Golfe du Lion : enseignements tirés des expériences et de la modélisation ArchiMer Queiros, Quentin. The Gulf of Lions has faced a sharp drop in the catches of its two main small pelagic exploited species, the sardine Sardina pilchardus and the anchovy Engraulis encrasicolus since the mid-2000s, despite both population abundances remaining high. This situation has been due to a severe decrease in individual body condition and size as a result of both lower growth and the disappearance of the oldest and largest individuals. While overfishing, predation or disease outbreaks have been refuted to explain this situation, one major hypothesis remained to be investigated. A potential shift in sardine and anchovy diet towards smaller planktonic prey indeed suggested bottom-up control as the main driver of these populations in the Gulf of Lions. The first aim of... Tipo: Text Palavras-chave: Poissons petits pélagiques; Expérience; Processus bottom-up; Modélisation; Traits d'histoire de vie; Small pelagic fish; Experiment; Bottom-Up processes; Modeling; Life history traits. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00692/80420/83556.pdf Une approche bioénergétique pour la comparaison des traits d'histoire de vie de l'anchois et de la sardine du golfe de Gascogne ArchiMer Gatti, Paul. Anchovy and sardine belong to the guild of small pelagic fish and are of peculiar importance at the scales of ecosystems and fisheries. Both species are worldwide spread and commonly occur in the same ecosystems. They display large interannual variability in biomass with markedly different trends or even asynchronous. A growing literature suggests that those dynamics are due to respective sensibility to environmental conditions driven by different biological traits. A priori both species are very similar but show slightly distinct feeding behaviours and reproductive strategies. Understanding divergences in both species biology and life history strategies is thus crucial to understand and predict past and future dynamics of these stocks. The aim of this PHD... Tipo: Text Palavras-chave: Bioénergétique; Modélisation individu centrée; Cycle de vie; Traits d'histoire de vie; Petits poissons pélagiques; Bioenergetics; Individual based model; Life cycle; Life history traits; Small pelagic fishes. Ano: 2016 URL: https://archimer.ifremer.fr/doc/00498/60917/64277.pdf Modélisation bioénergétique de la variabilité des traits d’histoire de vie de l’anchois et de la sardine entre le golfe du Lion, le golfe de Gascogne et la Manche ArchiMer Menu, Clara. Small pelagic fish show a general decrease in size and body condition over the past two decades in the North-East Atlantic. The underlying factors are still not well understood, however recent studies point to a bottom-up control. In order to understand how the environment impacts the main biological functions, i.e. growth, reproduction and maintenance, we adopted a bioenergetic modelling framework based on the Dynamic Energy Budget theory. To improve the robustness of our study, we chose a comparative approach between two species, Engraulis encrasicolus and Sardina pilchardus, both living in three areas, namely the English Channel, the Bay of Biscay and the Gulf of Lion. Our model is calibrated over the Bay of Biscay and then applied to the other areas,... Tipo: Text Palavras-chave: Engraulis encrasicolus; Sardina pilchardus; Théorie Dynamic Energy Budget; Traits d'histoire de vie; Manche; Golfe de Gascogne; Golfe du Lion; Engraulis encrasicolus; Sardina pilchardus; Dynamic Energy Budget theory; Life history traits; English Channel; Bay of Biscay; Gulf of Lion. Ano: 2020 URL: https://archimer.ifremer.fr/doc/00667/77900/80092.pdf Registros recuperados: 4 Primeira ... 1 ... Última

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