Exotic Invasive Species
Invasive plants and animals pose a severe long-term threat to biodiversity and ecosystem stability as they crowd out native species. Some exotic species also pose health risks and adversely affect outdoor recreation and fisheries. Sometimes, native species become "pests" when they find food and shelter or take up residence under unnatural circumstances.
Common Invasive Species
The Japanese black pine (Pinus thunbergii) and the black locust (Robinia pseudoacacia) are large exotic trees found on Fire Island and at the William Floyd Estate.
Fire Island's most abundant weeds include the autumn olive (Eleagnus umbellata), which is an especially prevalent shrub at the William Floyd Estate, nodding thistle (Carduus nutans) and spotted knapweed (Centaurea aculosa).
Integrated Pest Management
Integrated pest management (IPM) is a comprehensive approach to managing pests that seeks to minimize the use of harmful pesticides and other ecologically unsound practices. Pests are first controlled by exploiting known facts about their behavior to find and remove sources of food and shelter. Pesticides are used only if no other method will work or if a quick remedy is necessary, such as in a human health emergency. The use of low-toxicity pesticides or other non-toxic methods for managing pests results in a low-risk pest management approach.
Managing pests that may affect historic structures or cultural landscapes must be accomplished in a manner that does NOT compromise the resource, landscape or character-defining features.
Fire Island National Seashore started measures to manage Norway rats in park buildings in 2004. The park’s comprehensive IPM Plan was completed in 2006. A three-year project to locate and remove invasive plant species at the William Floyd Estate and in the Otis Pike Fire Island High Dune Wilderness will begin in 2007.
Park visitors and residents of the private communities within the boundaries of the park can also be proactive in helping reduce invasive and exotic species on Fire Island.