Quantity of questing black-legged ticks and associated micro-scale environmental data collected from four Suburban Parks near New York City.

During 2017 and 2018, we collected the quantity of questing black-legged ticks (), also known as deer ticks, in 124 sampling sites of 5m by 5m in four state parks-Caumsett State Historic Park, Connetquot River State Park, Rockefeller State Park, and Fire Island National Seashore-around New York City. The black-legged tick is the primary vector for the spirochete , the pathogen of Lyme disease, in Northeastern United States. Using the flagging method, we collected and counted the numbers of adult and nymphal black-legged ticks at each stie. Along with these quantities, we also recorded the geographic coordinates, ambient temperature, and relative humidity at the sampling sites. Using high-resolution aerial imagery and LiDAR data, we further derived land cover composition, ecotone boundary length, normalized difference vegetation index (NDVI), elevation, solar radiation, and other environmental factors. The data could be used to conduct longitudinal analysis at the same sampling sites as well as comparison with other sites. Ecologists and environmental scientists can use the data for spatiotemporal and statistical analyses of tick ecology at the local scale.