South Coast Estuarine Habitat

This hosted feature layer has been published in RI State Plane Feet NAD 83 Eelgrass beds, estuarine and marine wetlands in South Shore delineated from 1999 true color aerial photography and coded according to U.S. Fish and Wildlife Service's Classification of Wetlands and Deepwater Habitats of the United States (Cowardin, L.M., V. Carter, F.C. Golet, and T. Laroe. 1979.(Reprinted 1992). U.S. Fish and Wildlife Service, Washington DC. FWS/OBS-79/31. 103 pp." ) Data intended for planning for critical habitat protection, inventory of eelgrass beds and coastal wetlands. Target minimum polygonal mapping unit was 0.5 acre for eelgrass beds, 0.25 acre for discrete coastal wetlands, and 3 to 5 acres for internal polygons.本托管要素图层（hosted feature layer）采用罗德岛州平面英尺坐标系（NAD 83）发布，其制图范围覆盖南岸地区的鳗草床、河口与滨海湿地，数据基于1999年真彩色航空摄影解译勾绘，并依据美国鱼类及野生动物管理局（U.S. Fish and Wildlife Service）发布的《美国湿地与深水栖息地分类标准》进行编码（Cowardin, L.M.、Carter, V.、Golet, F.C. 与 Laroe, T.，1979年，1992年重印，美国鱼类及野生动物管理局，华盛顿哥伦比亚特区，FWS/OBS-79/31，共103页）。本数据集旨在用于关键栖息地保护规划、鳗草床与滨海湿地普查工作。鳗草床的最小多边形制图单元阈值为0.5英亩，独立滨海湿地为0.25英亩，内部多边形的最小制图单元阈值为3至5英亩。