Environmental Studies of Erie Bluffs Conclude Park is too Sensitive for Development
“Erie Bluffs supports a number of rare plant communities including some of the last remaining black oak savanna and sand barren communities in Pennsylvania. Nearly 150 acres of the Erie Bluffs property, which historically supported black oak savannah and sand barrens communities, is actively farmed….The forests of the lake plain, floodplains, ravines and escarpment tops support several trees over one hundred feet tall and over 12 feet in circumference. The most significant area for older growth trees is on the escarpment tops of the bluffs, with trees approaching 200 years in age.
The vascular flora of Erie Bluffs is diverse due to the high diversity of landforms, soils, and site history. The bluffs, associated seepage slumps, steep tributary gorges, and the dune/beach ridge provide habitat for plant species rare or absent in other parts of Pennsylvania. During the 2004 Bioblitz at Erie Bluffs, and through other inventory efforts, botanists documented over 400 vascular plant species, of which 18 are considered rare in Pennsylvania (S1-S3), and can only be found along the Lake Erie Coast. There are also nearly 100 species of non-native plants, primarily occurring in agricultural or developed areas of the park.
The diverse habitat types of Erie Bluffs provide foraging grounds for Bald Eagles and Northern Harriers, and breeding sites for Red-headed Woodpeckers and several forest interior bird species. The bluff face supports what could possibly be the largest colony of Bank Swallows in PA. Mammal surveys and results from the 2004 Bioblitz documented several bat species, such as the eastern red bat, the big brown and little brown bats, and the eastern pipistrelle. Results of invertebrate and plant surveys of the ephemeral pools indicated seepage wetlands that are fed by groundwater and remain saturated throughout the year. These wetlands provide breeding habitat for a number of amphibian species and the invertebrate composition. They also underscore the hydrologic connection between the lake plain and the upland areas within the watershed. The wet forest sites are also habitat for a number of insect species with forest-restricted habits. The interior forests, which are uncommon in this part of the state, may support several disjunct insect taxa more commonly found in areas with greater forest cover.
Sensitivity of the site is presented here based on the biological composition and function of ecological factors such as soils, slope, and hydrology. Because of the number of rare plants, plant communities, and the hydrologic connectivity within the area, much of the property is considered sensitive to development because the site quality of one area is directly linked to the quality of another….
The overall objectives in ecological management of Erie Bluffs State Park should focus on maintaining and enhancing populations of rare species and elements, maintaining and enhancing ecological viability by increasing patch size and site connectivity through restoration, maintaining the relationship between site hydrology and ecosystem (habitat) character and function, and controlling non-native invasive species….”
From
Rapid Inventory and Assessment of Landscape, Ecological and Biodiversity Resources Relative to Management Options. Erie Bluffs State Park. Erie County, Pennsylvania. Final Report July 2005. Prepared by Western Pennsylvania Conservancy

