Preferences elicitation can be a challenging exercise for citizens participating in assessment surveys. It is even more challenging when it comes to complex and unfamiliar ecosystems and the threatened ecosystem services they provide. Making people aware of the characteristics of the ecosystem services being valued is determinant for the assessment process. We investigated the impact of familiarity and academic information supply on people's preferences for twenty selected ecosystem services of French Mediterranean coastal lagoons. The results show that regardless of familiarity and information supply, there is a strong consensus about the highest importance of regulation and maintenance ecosystem services as well as environmental education and research opportunity ecosystem services. By contrast, nine of the cultural ecosystem services, together with two provisioning ecosystem services showed heterogeneous preferences among the different citizen groups. Using a combination of descriptive and inferential statistics these eleven ecosystem services split up into three clusters characterized as (i) contemplative leisure, (ii) heritage, and (iii) consumptive activities. Familiarity and academic information supply had a strong impact on the preferences for these three clusters of ecosystem services.

对于参加评估调查的公民而言，偏好激发可能是一项具有挑战性的工作。对于复杂而陌生的生态系统及其所提供的受威胁的生态系统服务而言，挑战甚至更大。让人们意识到所评估的生态系统服务的特征是评估过程的决定性因素。我们调查了熟悉程度和学术信息供应对人们偏好法国地中海沿岸泻湖的二十种特定生态系统服务的影响。结果表明，无论是否熟悉和提供信息，对于调节和维护生态系统服务以及环境教育和研究机会生态系统服务的最高重要性都存在强烈共识。相比之下，九种文化生态系统服务 再加上两个供应生态系统服务，显示了不同公民群体之间的异质偏好。通过将描述性统计和推论统计相结合，这十一个生态系统服务被划分为三个集群，其特征为（i）沉思休闲，（ii）遗产和（iii）消费活动。熟悉程度和学术信息供应对这三类生态系统服务的偏好产生了强烈影响。