Objectif général :Le projet MARINEXUS a pour but de réduire limpact des activités humaines sur les écosystèmes marins et de favoriser le développement durable de la Manche. En effet, la Manche fait face à de nombreuses problématiques environnementales liées au développement de diverses activités en zone marine. Pour cela, les partenaires souhaitent contribuer à la mise en place dune politique environnementale durable, basée sur une bonne compréhension scientifique des écosystèmes présents en Manche. Le projet vise ainsi à créer un réseau transmanche de structures de recherche sur les changements liés à lactivité humaine au sein des écosystèmes côtiers et hauturiers (relative à la haute mer) en Manche occidentale et à diffuser ces résultats au grand public (scolaires mais aussi décideurs, collectivités locales, associations etc.)Principales actions :- Observation et suivi décosystèmes de la Manche Occidentale.- Etude des changements climatiques, habitats artificiels et invasions biologiques : impacts sur la population et fonctionnement de la communauté.- Etudes des organismes marins endogènes de la Manche Occidentale dans un environnement changeant.- Campagne de sensibilisation du grand public et des élèves à limpact des activités humaines sur les écosystèmes marins en Manche occidentale.----------------Main objective :The MARINEXUS project aims to reduce adverse effects of human activity on marine ecosystems and to encourage the sustainable development in the Channel area. Indeed, the Channel is faced to many environmental issues associated to the development of various activities in marine areas. To do this, the project partners plan to implement a sustainable environmental policy, based on a sound scientific understanding of the ecosystems in the Channel area. The principal objective of this project is to create a cross-channel network of research structures working on the changes related to human activity within coastal and open water ecosystems in the western Channel. It will also disseminate its results to the general public (schools but also stakeholders, local authorities, charities etc.).Main actions :- Observation and monitoring of the Western Channel ecosystems- Study of climate change, artificial habitats and biological invasions : impacts on population and community functioning- Study of endogenous marine organisms of the Western Channel in a changing environment- Increasing awareness of the general public and schoolchildren regarding the impact of human activity on marine ecosystems in the Western Channel Achievements: Involve students and schools in scientific projects, this was one of the challenges taken up by the MARINEXUS project, which developed effective methods to raise awareness among young people. As part of the MARINEXUS project, three Bioblitz, 24-hour events involving scientists, the public and experts were held in England, enabling the marine and terrestrial species in a designated area to be identified. Subsequently, species identification guides were developed by the students based on the data collected. A Marinexus bus, fitted out as a mobile laboratory for observing marine environments was also created in reference to the project.