Bayside is a 165-acre former airport site in Fremont that was a checkerboard of wetlands and uplands. The site had been diked for almost a century, though, and the on-site wetlands were suffering as a result of their isolation. However, these wetlands also hosted the salt marsh harvest mouse (Reithrodontomys raviventris raviventris; SMHM), an endangered species. Zentner Planning and Ecology developed an innovative plan to restore wetlands on one edge of the site while allowing development to occur on the remainder. Key to the plan’s approval was the successful creation of mouse habitat on the restored wetlands. We demonstrated the successful restoration of the wetlands and the salt marsh harvest mouse population and Federal, State and local permit approvals for the development project followed.
Roddy Ranch is a 2,000-acre ranch in southern Antioch and includes rolling grasslands that were thought to host the San Joaquin kit fox. The fox is known from the southernmost parts of the San Joaquin County but in the past had been observed as far north as north-central Contra Costa County. Using recent research, environmental data on prey conditions, and ecological analyses of predator relationships, Zentner Planning and Ecology demonstrated that the kit fox was not likely to occur at Roddy Ranch or its environs. We then incorporated thus information into the biotic section of the EIR documents and a resource management plan for the project open space adjacent.
Zentner Planning and Ecology was retained by the Port Sonoma Marina to conduct protocol-level surveys for the California Clapper Rail (CCR, Rallus longirostris obsoletus), a Federal and State-listed endangered species. Surveys were completed to determine whether CCRs occupied the unused eastern end of the Port, which had developed an expanse of tidal marsh. We completed surveys at the Port and in the nearby tidal marshes to ensure CCR counts were being completed accurately. Successive surveys then demonstrated conclusively that CCRs were not in the Port habitats.