NAISMA’s minimum mapping standards for invasive weeds addressed the minimum base information necessary to compare and combine invasive weed maps across tribal, county, state/provincial, national, and even international borders.
Invasive Species Resources
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North American Invasive Species Management Association.
North Central Soybean Research Program. Soybean Research and Information Initiative.
Scroll and select Distribution to view known distribution of the soybean cyst nematode, Heterodera glycines, in counties in the United States and Canada in selected years from 1957 to 2014.