FRIENDS OF PRINCETON OPEN SPACE
FRIENDS OF PRINCETON OPEN SPACE
FRIENDS OF PRINCETON OPEN SPACE
Programs
25-Acre Riparian Restoration
Our current stewardship focus is the 25-acre riparian restoration project along the shores of Mountain Lake and its feeder streams. Riparian zones, where terrestrial ecosystems meet aquatic ecosystems, are vital for protecting water quality, preventing erosion, and supporting diverse wildlife. This project includes removing invasive plants, planting native species, and engaging volunteers in hands-on restoration work. This work is essential for building a more resilient riparian ecosystem and for maintaining the health of the watershed. The water that flows through Mountain Lakes ultimately finds its way into the Raritan River, an important drinking water source for central New Jersey. By enhancing riparian biodiversity, improving stormwater management, and offering meaningful environmental education opportunities, the project not only supports the ecological integrity of Mountain Lakes but also enriches the experience for all who visit the Preserve.Geographies30 Mountain Ave, Princeton, NJ 08540, USADatesNot indicatedSourceUser-generatedBiodiversity,Climate change,Environmental education,Land resources,Water resourcesAge groups––18-Acre Forest Restoration
The 18-acre Forest Restoration Project at the Billy Johnson Mountain Lakes Nature Preserve is a major ecological initiative by Friends of Princeton Open Space to restore native forest habitat. The pressure posed by the overabundance of white-tailed deer is a driving force behind forest degradation in our area. A large deer exclosure fence was constructed within the project site to protect 8.5 acres of forest habitat; this functions as a long-term method for passive forest restoration, allowing native plant communities to thrive without the browsing pressure from deer. This project site has also been devastated by the invasive emerald ash borer, killing off nearly all of the ash tree population and leading to significant canopy loss. Since 2019, more than 3,000 volunteer hours went into removing invasive species, planting native vegetation, and protecting young plants from deer browse. Over 8,000 native trees, shrubs, and herbaceous plants have been planted by our stewardship team and volunteers! Led by FOPOS’s Natural Resource Director and supported by interns and community volunteers, the project has already transformed the landscape. Native wildflowers, ferns, and trees are thriving, enhancing habitat for wildlife, improving stormwater management, and offering visitors a more vibrant and educational natural experience. This project’s focus has shifted from large-scale planting to invasive management. This site is also home to a small grove of 100% native American chestnut trees planted in 2020 with support from ArcheWild. A stone American chestnut leaf sculpture, created by eco-artist Susan Hoenig, can also be observed in this project site and helps bring awareness to the American chestnut tree restoration efforts.Geographies30 Mountain Ave, Princeton, NJ 08540, USADatesNot indicatedSourceUser-generatedBiodiversity,Climate change,Environmental education,Land resources,Water resourcesAge groups––Native Plant Propagation Program
Volunteers are guided by our land stewardship team to help collect, process, and sow native seeds from the Preserve, nurturing them through their growth. We follow specific techniques like cold stratification to ensure the success of each species. Once the plants are strong enough, they are transplanted into larger pots and later planted in our restoration project sites. Involving volunteers in this process not only strengthens the program but also educates the community about the importance of native plants in healthy ecosystems. Volunteers learn how to replicate native seed propagation on their own and gain hands-on experience in ecological restoration. This collaboration fosters a deeper connection with nature, helping to grow awareness about the value of native plants and their role in preserving biodiversity. Our Native Plant Propagation Program is supported by the Garden Club of Princeton’s Partners for Plants program. Thanks to the support of the Garden Club of Princeton and our amazing volunteers, we’re able to grow and plant native species year after year.Geographies30 Mountain Ave, Princeton, NJ 08540, USADatesNot indicatedSourceUser-generatedBiodiversity,Climate change,Environmental education,Land degradationAge groups––
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