ANS-EN-MS-MMN: Good environmental status is the combination of well-functioning marine ecosystems, their good health and the environmental sustainability of their use for human activities. The definition of good environmental status takes into account the existence of human activities at sea or on land that have an impact on the environment. As such, it is not a state unaffected by human activities, sometimes called "pristine". In defining good environmental status, certain contextual elements need to be taken into account. In addition to the existence of anthropogenic pressures, it is therefore necessary to consider their impacts on the environment, the long-term or short-term natural variability of ecosystems and their resilience, and global changes, in particular climate change. On the basis of the content elements of the Directive, France has chosen to define good environmental status as the long-term level of ambition for the environmental status of the marine environment, i.e. the acceptable level of impact of human activities on environmental status that does not affect the proper functioning of ecosystems. The methodology for defining good environmental status distinguishes between two bases: 1: the description of the Good Environmental Status at the level of descriptors and, where appropriate, at the level of criteria. 2: the characterization of the Good Environmental Status, which includes several elements: - the identification of "units of assessment" and relevant scales ; - definition of the method for identifying issue areas/characteristic areas ; - The development of indicators to judge the achievement of the EEB for the marine environment, based on the above choices; - the definition of levels/thresholds/trends associated with these indicators and the setting of these levels/thresholds/trends; - the development of an intra-descriptor aggregation method. It should be noted that the proper functioning of an ecosystem is a scientific concept, based on an ecosystem approach, which can be qualified or even quantified, in some cases today, in other cases in the future, subject to further studies, research and data acquisition. This definition will have to be revised every 6 years on the basis of new knowledge and data and will have to take into account the evolution of anthropogenic pressures and global changes. The effects of climate change are being felt on the marine environment and its functioning: they will be taken into account in the revision of the definition of Good Environmental Status as part of the context.

ANS-EN-MS-MMN: Good environmental status is the combination of well-functioning marine ecosystems, their good health and the environmental sustainability of their use for human activities. The definition of good environmental status takes into account the existence of human activities at sea or on land that have an impact on the environment. As such, it is not a state unaffected by human activities, sometimes called "pristine". In defining good environmental status, certain contextual elements need to be taken into account. In addition to the existence of anthropogenic pressures, it is therefore necessary to consider their impacts on the environment, the long-term or short-term natural variability of ecosystems and their resilience, and global changes, in particular climate change. On the basis of the content elements of the Directive, France has chosen to define good environmental status as the long-term level of ambition for the environmental status of the marine environment, i.e. the acceptable level of impact of human activities on environmental status that does not affect the proper functioning of ecosystems. The methodology for defining good environmental status distinguishes between two bases: 1: the description of the Good Environmental Status at the level of descriptors and, where appropriate, at the level of criteria. 2: the characterization of the Good Environmental Status, which includes several elements: - the identification of "units of assessment" and relevant scales ; - definition of the method for identifying issue areas/characteristic areas ; - The development of indicators to judge the achievement of the EEB for the marine environment, based on the above choices; - the definition of levels/thresholds/trends associated with these indicators and the setting of these levels/thresholds/trends; - the development of an intra-descriptor aggregation method. It should be noted that the proper functioning of an ecosystem is a scientific concept, based on an ecosystem approach, which can be qualified or even quantified, in some cases today, in other cases in the future, subject to further studies, research and data acquisition. This definition will have to be revised every 6 years on the basis of new knowledge and data and will have to take into account the evolution of anthropogenic pressures and global changes. The effects of climate change are being felt on the marine environment and its functioning: they will be taken into account in the revision of the definition of Good Environmental Status as part of the context.

ANS-EN-MS-MMN: Good environmental status is the combination of well-functioning marine ecosystems, their good health and the environmental sustainability of their use for human activities. The definition of good environmental status takes into account the existence of human activities at sea or on land that have an impact on the environment. As such, it is not a state unaffected by human activities, sometimes called "pristine". In defining good environmental status, certain contextual elements need to be taken into account. In addition to the existence of anthropogenic pressures, it is therefore necessary to consider their impacts on the environment, the long-term or short-term natural variability of ecosystems and their resilience, and global changes, in particular climate change. On the basis of the content elements of the Directive, France has chosen to define good environmental status as the long-term level of ambition for the environmental status of the marine environment, i.e. the acceptable level of impact of human activities on environmental status that does not affect the proper functioning of ecosystems. The methodology for defining good environmental status distinguishes between two bases: 1: the description of the Good Environmental Status at the level of descriptors and, where appropriate, at the level of criteria. 2: the characterization of the Good Environmental Status, which includes several elements: - the identification of "units of assessment" and relevant scales ; - definition of the method for identifying issue areas/characteristic areas ; - The development of indicators to judge the achievement of the EEB for the marine environment, based on the above choices; - the definition of levels/thresholds/trends associated with these indicators and the setting of these levels/thresholds/trends; - the development of an intra-descriptor aggregation method. It should be noted that the proper functioning of an ecosystem is a scientific concept, based on an ecosystem approach, which can be qualified or even quantified, in some cases today, in other cases in the future, subject to further studies, research and data acquisition. This definition will have to be revised every 6 years on the basis of new knowledge and data and will have to take into account the evolution of anthropogenic pressures and global changes. The effects of climate change are being felt on the marine environment and its functioning: they will be taken into account in the revision of the definition of Good Environmental Status as part of the context.

ANS-EN-MS-MMN: Good environmental status is the combination of well-functioning marine ecosystems, their good health and the environmental sustainability of their use for human activities. The definition of good environmental status takes into account the existence of human activities at sea or on land that have an impact on the environment. As such, it is not a state unaffected by human activities, sometimes called "pristine". In defining good environmental status, certain contextual elements need to be taken into account. In addition to the existence of anthropogenic pressures, it is therefore necessary to consider their impacts on the environment, the long-term or short-term natural variability of ecosystems and their resilience, and global changes, in particular climate change. On the basis of the content elements of the Directive, France has chosen to define good environmental status as the long-term level of ambition for the environmental status of the marine environment, i.e. the acceptable level of impact of human activities on environmental status that does not affect the proper functioning of ecosystems. The methodology for defining good environmental status distinguishes between two bases: 1: the description of the Good Environmental Status at the level of descriptors and, where appropriate, at the level of criteria. 2: the characterization of the Good Environmental Status, which includes several elements: - the identification of "units of assessment" and relevant scales ; - definition of the method for identifying issue areas/characteristic areas ; - The development of indicators to judge the achievement of the EEB for the marine environment, based on the above choices; - the definition of levels/thresholds/trends associated with these indicators and the setting of these levels/thresholds/trends; - the development of an intra-descriptor aggregation method. It should be noted that the proper functioning of an ecosystem is a scientific concept, based on an ecosystem approach, which can be qualified or even quantified, in some cases today, in other cases in the future, subject to further studies, research and data acquisition. This definition will have to be revised every 6 years on the basis of new knowledge and data and will have to take into account the evolution of anthropogenic pressures and global changes. The effects of climate change are being felt on the marine environment and its functioning: they will be taken into account in the revision of the definition of Good Environmental Status as part of the context.

ANS-EN-MS-MMN: Good environmental status is the combination of well-functioning marine ecosystems, their good health and the environmental sustainability of their use for human activities. The definition of good environmental status takes into account the existence of human activities at sea or on land that have an impact on the environment. As such, it is not a state unaffected by human activities, sometimes called "pristine". In defining good environmental status, certain contextual elements need to be taken into account. In addition to the existence of anthropogenic pressures, it is therefore necessary to consider their impacts on the environment, the long-term or short-term natural variability of ecosystems and their resilience, and global changes, in particular climate change. On the basis of the content elements of the Directive, France has chosen to define good environmental status as the long-term level of ambition for the environmental status of the marine environment, i.e. the acceptable level of impact of human activities on environmental status that does not affect the proper functioning of ecosystems. The methodology for defining good environmental status distinguishes between two bases: 1: the description of the Good Environmental Status at the level of descriptors and, where appropriate, at the level of criteria. 2: the characterization of the Good Environmental Status, which includes several elements: - the identification of "units of assessment" and relevant scales ; - definition of the method for identifying issue areas/characteristic areas ; - The development of indicators to judge the achievement of the EEB for the marine environment, based on the above choices; - the definition of levels/thresholds/trends associated with these indicators and the setting of these levels/thresholds/trends; - the development of an intra-descriptor aggregation method. It should be noted that the proper functioning of an ecosystem is a scientific concept, based on an ecosystem approach, which can be qualified or even quantified, in some cases today, in other cases in the future, subject to further studies, research and data acquisition. This definition will have to be revised every 6 years on the basis of new knowledge and data and will have to take into account the evolution of anthropogenic pressures and global changes. The effects of climate change are being felt on the marine environment and its functioning: they will be taken into account in the revision of the definition of Good Environmental Status as part of the context.

Good environmental status is achieved when the following conditions are cumulatively met, taking into account that major functional and structural changes are not only triggered by regional anthropogenic pressures alone, but also by other factors such as climate change or natural population variability : - the different key compartments (functional groups, species, habitats) of the food webs are maintained in proportions that allow the long-term sustainability of the general structure of the food webs; - the general abundance dynamics of these groups, analysed over sufficiently large time scales, ensure the proper functioning of the system; this also implies maintaining the fertility and genetic diversity of the populations; - the main trophic links on which the general dynamics of the system are based are maintained in order to guarantee the efficiency of correct energy transfer from low to high trophic levels; - the processes of recycling of organic matter provided by the microbial loop and decomposers are maintained under conditions which do not jeopardize their functional role in the system.

Good ecological status is achieved when the diversity of species and habitats, ecological structures and functions, such as connectivity, material flows or species habitats, are maintained and are consistent with existing natural environmental conditions. There is no significant decline in diversity, at all levels of life organisation (populations, functional groups, communities and habitats), in terms of composition (number and nature of taxa, functional groups or basic habitats) and proportion (relative abundances/extents).

Good ecological status is achieved when the maintenance of the productivity of predatory species induces a correct transfer from low to high trophic levels and a structural and functional maintenance of key elements of higher trophic levels, taking into account that a decrease in productivity may also be caused by other non-trophic factors.

Good ecological status is achieved when maintaining the proportion of species at the top of the food web results in an acceptable level of direct pressures on the upper trophic levels.

Good ecological status is achieved when the maintenance of the abundance and distribution of key groups ensures above all structural stability of the system. Indirectly, the maintenance of abundance also relies on the flows associated with these groups.

At species level, the indicator for criterion 4.1 relevant to characterising good ecological status is defined as follows: Indicator 4.1.1: Performance of key predatory species

Au niveau des espèces, l'indicateur relatif au critère 4.2 pertinent pour caractériser le bon état écologique est défini comme suit : Indicateur 4.2.1 : poissons de grande taille (en poids) L’indicateur est calculé par la part de biomasse (en pourcentage) des poissons de taille supérieure à un seuil correspondant pour l’espèce concernée à un changement important de son régime alimentaire. Les espèces à prendre en compte sont les espèces échantillonnées dans le cadre des campagnes scientifiques. Les seuils de taille correspondants seront précisés par sous-région marine, à la suite d’études complémentaires, ainsi que prévu à l’article 4 de l'arrêté du 17 décembre 2012 relatif à la définition du bon état écologique des eaux marines.

At species level, the indicator for criterion 4.3 relevant to characterising good ecological status is defined as follows: Indicator 4.3.1: Trends in abundance or biomass of selected functionally important species/groups

The aggregation rules at the level of the descriptor will be clarified, where appropriate, as a result of additional studies, as provided for in Article 4 of the Order of 17 December 2012 concerning the definition of good environmental status of marine waters. These elements will be developed with a view to updating the definition of good environmental status by 2018.

The indicators associated with criterion 1.7 will be specified following further studies, as provided for in Article 4 of the Order of 17 December 2012 on the definition of good environmental status of marine waters. These elements will be developed with a view to updating the definition of good environmental status by 2018.

The parameters associated with the indicator, as well as the levels and trends corresponding to good environmental status, will be specified for the indicator associated with criterion 4.1 following further studies, as provided for in Article 4 of the Order of 17 December 2012 on the definition of good environmental status of marine waters. These elements will be developed with a view to updating the definition of good environmental status by 2018.

The levels and trends corresponding to good environmental status will be specified for the indicator associated with criterion 4.2 following further studies, as provided for in Article 4 of the Order of 17 December 2012 on the definition of good environmental status of marine waters. These elements will be developed with a view to updating the definition of good environmental status by 2018.

The parameters associated with the indicator, as well as the levels and trends corresponding to good environmental status, will be specified for the indicator associated with criterion 4.3 following further studies, as provided for in Article 4 of the Order of 17 December 2012 on the definition of good environmental status of marine waters. These elements will be developed with a view to updating the definition of good environmental status by 2018.