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This dataset represents actual and predicted suitable habitat for Castanea dentata (American chestnut, species code 421) as measured by importance value based on data obtained from the Forest Inventory and Analysis (FIA) project, current climate conditions, and future climate projections. This summary unit of this dataset is a 20 by 20 kilometer cell. The actual importance value (IV) was calculated based on the number of stems and basal area of a given tree species relative to other tree species on a plot using about 100,000 FIA plots (representing nearly 3 million tree records) in the 37 states within the United States east of the 100th meridian. These importance values were summarized to 20 by 20 kilometer grid...
    map background search result map search result map Eastern United States Climate Change Tree Atlas - Suitable habitat for Castanea dentata (American chestnut) as measured by importance value (IV) Eastern United States Climate Change Tree Atlas - Suitable habitat for Castanea dentata (American chestnut) as measured by importance value (IV)