PACTE is now one of the flagship projects of ISblue. It joins the other Flagship projects and is particularly relevant to theme 3<\/a> “Sustainability of coastal systems” and theme 5<\/a> “Long-term observation systems for ocean knowledge”.<\/p>\n\n\n\n The Bay of Brest is a coastal ecosystem that has been exposed to strong anthropogenic pressures over the last decades, especially after World War II. Using sediment cores collected in the bay, PACTE aims to reconstruct past environmental changes at a high temporal resolution.<\/p>\n\n\n\n As much by the studied environment as by the decompartmentalized aspect of its axes of study, the PACTE project is placed as a complex system requiring interdisciplinary studies and the crossing of notions and concepts of various disciplinary fields<\/p>\n\n<\/div><\/div>\n\n\n\n Local scale observation<\/strong> is essential to decipher “climate-ecology-anthropy” interactions and establish robust correlations between driving forces and environmental changes through time.<\/p>\n\n\n The study site is approached as a land-sea continuum<\/strong> and from a long-term perspective<\/strong>, at least over the last two centuries.<\/p>\n\n<\/div><\/div>\n\n\n\n The main objective is then to reconstitute the first chronosystemic frieze of evolution of the socio-ecosystem of the Brest bay, and to highlight and model the magnitude of the imbalances with which the Brest bay is confronted when it is exposed to climatic oscillations and land use practices by mankind.<\/p>\n\n\n<\/div>\n\n\n To fulfill this objective, the PACTE project focuses on three main issues:<\/p>\n\n\n\n The PACTE project aims at answering these scientific questions by deploying an integrated study strategy including different aspects:<\/p>\n\n\n\n The model-data intercomparison will make it possible to establish and discuss robust causal relationships between the different eco-socio compartments established thanks to the paleoreconstructions, and to simulate, as precisely as possible, past to present trajectories, allowing then to consider future trajectories and scenarios.<\/p>\n\n\n\n The PACTE project is structured around four working groups<\/strong> or Work Package (WP) :<\/p>\n\n\n\n![\"Offshore](\"https:\/\/isblue.fr\/wp-content\/uploads\/2022\/06\/Capture-1-1.jpg\")
<\/figure>\n<\/figure>\n\n\n\nThe PACTE project:<\/h2>\n\n\n\n
An <\/strong><\/span>interdisciplina<\/strong>ry project:<\/span><\/h3>\n\n\n\n
![\"\"](\"https:\/\/isblue.fr\/wp-content\/uploads\/2022\/06\/Capture.png\")
<\/figure>On a local scale<\/strong><\/span> and with a <\/span>land-sea approch<\/span><\/strong>:<\/h3>\n\n\n\n
![\"\"](\"https:\/\/isblue.fr\/wp-content\/uploads\/2022\/06\/Image2.jpg\")
<\/figure>Problematic issues:<\/h2>\n\n\n\n
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Development:<\/h2>\n\n\n\n
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In this way, the project combines several techniques :<\/h4>\n\n\n\n
![\"\"](\"https:\/\/www.isblue.fr\/wp-content\/uploads\/2022\/06\/Photo-pour-comm-HDR-2-1200x601.jpg\")
<\/figure>\n
![\"\"](\"https:\/\/isblue.fr\/wp-content\/uploads\/2022\/06\/Capture-1.jpg\")
<\/figure>\n
Organization:<\/h2>\n\n\n\n
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Coord : A. Penaud<\/a> (Geo-Ocean<\/a>, IUEM<\/a>)<\/li>\n<\/ul>\n\n\n\n\n
Coord : J. Goslin<\/a> (Geo-Ocean<\/a>, Ifremer<\/a>) and C. Lambert<\/a> (LEMAR<\/a>, CNRS<\/a>).<\/li>\n<\/ul>\n\n\n\n\n
Coord : R. Siano<\/a> (DYNECO<\/a>, Ifremer<\/a>) and J. Sutton<\/a> (LEMAR<\/a>, UBO<\/a>)<\/li>\n<\/ul>\n\n\n\n\n
Coord : Y-M. Paulet<\/a> (LEMAR<\/a>, UBO<\/a>) and M. Raimonet<\/a> (LEMAR<\/a>, CNRS<\/a>)<\/li>\n<\/ul>\n\n\n\nCollaborations:<\/h2>\n\n\n\n
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Contact:<\/h2>\n\n\n\n