The primary focus of FOPOS over the years has been preservation of open space. But it has become increasingly apparent that preservation of Princeton’s open space and biodiversity requires a combination of legal protection and habitat restoration. Many factors, including invasions of exotic species, fragmentation of natural areas, past plowing and removal of key predators, have created ecological imbalances that nature itself cannot mend.

In 2006, FOPOS hired Steve Hiltner as a part-time natural resources manager to work towards preserving and enhancing native plant diversity, restore habitats and conduct community outreach. Working with community volunteers, Steve has undertaken many new projects, particularly at Mountain Lakes Nature Preserve but also at local parks and schools.

In the summer of 2008, Steve was assisted by a full-time intern, Sarah Chambliss, through the PICS intern program at Princeton University. In 2009, Princeton University student Henry Loevner has been working through an internship provided by the Princeton Environmental Institute.