7.1. Use signs or access restrictions to reduce disturbance to mammals https://www.conservationevidence.com/actions/2325 • One study evaluated the effects of using signs or access restrictions to reduce disturbance to mammals. This study was in the USA1. COMMUNITY RESPONSE (0 STUDIES) POPULATION RESPONSE (0 STUDIES) BEHAVIOUR (1 STUDY) • Use (1 study): A replicated, paired sites, site comparison study in the USA1 found that removing or closing roads increased use of those areas by black bears..