Variable,Response categories,Explanation,
Type of literature,Peer-reviewed | Grey literature,The type of literature,
Full reference,Free text,Full reference of the paper/report in Harvard style,
Title,Free text,The title of the paper/report,
Intervention - Level 1,Construction of OWF | Operation of OWF| Decommissioning of OWF,The operational stage of the wind farm that the evidence relates to,
Population - level 1,Species/population | Community/assemblage | Abiotic | Human/Social,Categorical descriptor for the group or population (including any component of the marine ecosystem) that is impacted ,
Population - level 2,Fish | Fish and shellfish | Mammals | Birds | Invertebrates | Water Column | Habitat | Sediment | Human,Specific group that is impacted (includes biotic and abiotic). A new category of 'Habitat' was added for the grey literature to cover broader assessments on mixed biotic and abiotic receptors.,
Population - level 3,Free text,Specific species/taxa or abiotic ecosystem component that is impacted,
Outcome - level 1,Species or biological |Social or cultural |Economic |Ecological or community |Physical or Chemical,"Categorical descriptor for the impact on the species, marine environment or ecosystem component",
Outcome - level 2,Twenty descriptive categories,"More specific descriptor for the impact on the species, marine environment or ecosystem component",
Presence or mention of non-native or invasive species?,Yes | No or Unspecified,"Studies searched for ‘non-native’, ‘introduced’ and ‘alien’.",
Presence or mention of commercial species?,Yes | No or Unspecified,"Studies searched for ‘commercial’, ‘economic’ and ‘value’ in relation to fish or shellfish species",
Study design - level 1,Empirical or observational study |Qualitative or quantitative social study |Modeling study |Laboratory experiment | Literature-based assessment,Categorical descriptor for the type of study,
Study design - level 2,Site comparison study (reference site or comparable site) | No comparator | Interviews | Survey/Questionnaire | Before-after-control-impact study | Control-impact or Inside-outside study | Focus group/workshop/deliberative | Correlative only (no direct effects) | After only study (multiple time points/succession) | Participatory mapping | Scenarios comparisons (for modelling) | not specified,Categorical descriptor for the study design,
Study year(s),e.g. 2010,"The year or years during which the study took place (not the year of publication), or 'unspecified' if no date was provided.",
Date of publication,e.g. 2017,The date the study or report was published,
Structure ID-name,e.g. Thanet Offshore Wind farm,"The name given to the wind farm or study site. If not specified, or the study relates to multiple or generic sites, 'unspecified' is stated.",
Structure type,Free text,Various descriptions of the type of structure included in the study,
Structure age (at time of study),Numerical value or range of values,"The age of the structure at the time of the study. This is recorded as '0' years during construction, or the number of years post-construction.",
Structure depth,Numerical value,The depth of the structure below the seabed (metres),
Subject ,Free text,The species or ecosystem component being observed in the study,
Geographical marine location - level 1,Atlantic | Pacific | NA,The global marine region of the study,
Geographical marine location - level 2,e.g. North Sea,The sea in which the study took place,
Country,e.g. Netherlands,The country in which the study took place,
Region,Global | Laboratory | UK_Europe,"Distinction between studies in the UK and Europe, other global country or a laboratory based study",
Pressure,Operation of windfarm | Construction of windfarm | Underwater noise | Electro-magnetic fields| Vessel traffic | Scour and cable protection removal |  Decommissioning of windfarm | Cable installation,Categorical descriptor of the specific pressure from the offshore wind farm development that is causing the impact,
Outcome,Free text,"Summary of the outcome or response variable measured in the study, including whether positive or negative ",
ES impact ,e.g. Positive impact on biomass for the provision of nutrition,"The ecosystem service outcome class relating to the evidence, identified using the CICES class examples and MEA classifications. Includes the direction of the outcome (Positive, Negative, Inconclusive or No impact).",
ES group ,e.g. Positive impact on provisioning services,"The ecosystem service outcome group relating to the evidence, identified by mapping class results up the hierarchical levels of CICES and MEA. Includes the direction of the outcome (Positive, Negative, Inconclusive or No impact).",
Classification system used,"CICES | MEA | Hooper et al., 2020 | Ryfield et al., 2019",The Ecosystem Services Classification system used,
Notes,Free text,Additional information about the study,