The BICM program has developed two habitat classification schemes, which include a detailed 15-class habitat scheme and a general eight-class habitat scheme.
The detailed scheme was developed specifically for this habitat mapping effort (that is, 2008 and 2015/2016) and builds off the classification scheme used in previous BICM habitat mapping efforts (Fearnley and others, 2009). The additional classes developed in the detailed scheme are primarily used to further delineate various dune habitats, separate marsh and mangrove, and distinguish between beach and unvegetated barrier flat habitats. To ensure comparability between this effort and previous BICM map products, we have crosswalked the detailed classes to general habitat classes previously used by older BICM datasets available for 1996/98, 2002, 2004, and 2005.
Table 1 shows the description of the detailed habitat classes along with the detailed to general class crosswalk.
For more information on barrier island mapping methodology, please see Enwright and others (2019) or the metadata for the BICM products produced by the U.S. Geological Survey, Wetland and Aquatic Research Center (https://www.sciencebase.gov/catalog/item/5a32ebe1e4b08e6a89d886b4).
Table 1. BICM detailed and general classification schemes [--, not applicable].
Barrier islands are very dynamic environments due to their position at the land-sea interface. Thus, land managers require information on how habitats on these islands are changing over time. In response, the BICM program has produced spatially explicit habitat change products that depict and summarize habitat change between 2008 and 2015/2016 per BICM reach. The results from these analyses were summarized in two habitat change products. The first product depicts change in land and water coverage and the second product highlights changes based on inundation zones.
BICM detailed habitat classes were used to develop generalized habitat bins for these change analyses (Table 1). Next, change was determined between/amongst these bins (that is, change classes; Table 2).
For more information on the methodology used for the BICM habitat change products, please see the metadata for the BICM products produced by the U.S. Geological Survey, Wetland and Aquatic Research Center (https://www.sciencebase.gov/catalog/item/5a32ebe1e4b08e6a89d886b4).
Table 1. BICM change products bins with associated BICM detailed habitat classes.
Table 2. BICM change classes for each BICM habitat change product.