Estimated seabird diversity uncertainty

Estimated seabird diversity uncertainty from spatial statistical models developed by the NOAA Biogeography Branch. We operationally define seabirds as all avian species regularly sighted over marine waters. Given this definition, most species included in this chapter belong to the following taxonomic orders: Charadriiformes (gulls, terns, auks, phalaropes), Pelecaniformes (gannets, pelicans, and cormorants), and Procellariiformes (shearwaters, fulmars, petrels). The relative uncertainty value is a dimensionless number scaled between 0 and 1, where values closer to 0 indicate greater certainty. The relative uncertainty value at each location is the same for all hotspot quantities (abundance, richness, and diversity index; these are 3 separate rasters), because it is a function of the underlying trend and spatial model uncertainty for each species/group. | Description Source: NOAA

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