This project was completed for California Department of Fish and Game Local Assistance Grant #P0450009, which assessed and improved the San Diego Multiple Species Conservation Program Biological Monitoring Plan. This project was a modular effort and included critical assessments and research on 1) the implementation of the monitoring program to date and information relevant to successful monitoring program design 2) prioritization of MSCP species based on threat, 3) prioritization of ecological communities based on extent and representation, and 4) development of conceptual models to aid monitoring and management. These steps follow the monitoring program design described in Atkinson et al. 2004 which can be found at: https://sdmmp.com/view_article.php?cid=CID_jmolden%40usgs.gov_57acfadf298c1.