This indicator is based on a quantitative questionnaire-based survey (Eurobarometer survey on biodiversity) to provide results that can be presented as, for instance (fictional example): '35 % of the European voting population visit a nature reserve at least once a year'. It can include qualitative information, often involving focus groups, for instance (fictional example): 'Discussion in the United Kingdom focus groups has shown that people are highly concerned about the impact of climate change on wildlife'.