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2. NABat Master Sample grids


The NABat program uses a “Master Sample” approach with a grid-based frame. This approach assigns a spatially balanced and randomized ordering of all 10X10 km grids from a finite grid-based sampling frame using a Generalized Random-Tessellation Stratified (GRTS) survey design. The data contained in this space contain provisional NABat “Master Sample” grid packages. There are two primary “Master Sample” grid packages available: Continental United States (CONUS) and Alaska/Canada. Each “Master Sample” grid package include shape files of the entire geographic extent of the finite grid-based sampling frame as well as the spatially balanced and randomized ordered list of the 10x10km grid cells. Subsamples (e.g., monitoring site selection) [...]

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  • North American Bat Monitoring Program


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