Good environmental status (GES) is achieved when permanent changes in hydrographical conditions only have local impacts due to human intervention and these impacts, individually or cumulatively, do not have adverse impacts on the marine ecosystems (species, habitats, ecosystem functions) and do not result in biogeographic population effects. Good environmental status (GES) is achieved, if the permanent hydrographical changes addressed in accordance with D 7 do not prevent the good ecological status of the water in accordance with the WFD. The habitat types listed in Annex I relevant to the marine sector and the habitats of the marine species listed in Annex II to the Habitats Directive, as well as the marine habitats of species covered by the Birds Directive, are not adversely affected by permanent alterations in hydrographical activities such as the construction of bridges, tunnels or offshore wind installations, etc. and are in a favourable conservation status. The conservation status of a habitat is considered favourable when its natural range and the area it covers in this area are stable or increasing, and the structures and specific functions necessary for its long-term survival exist and are likely to continue to exist in the foreseeable future. Species are subject to favourable conditions for their diet and reproduction.