Distributions for five key tidal marsh-dependent bird species were modeled using boosted regression trees (Elith et al. 2008). Both methods are able to fit non-linear functions between environmental variables and the presence/absence of a species. Map values represent the probability of occurrence of a species. Higher values in a map indicate a higher likelihood that a species will be present at a site.
Bird species modeled: Common yellowthroat, black rail, clapper rail, marsh wren, song sparrow.
Probability of Occurrence Projections were created for each of the species for the following scenarios:
Current (2010)
2030-2100, low sediment, low organic, 0.52 m sea level rise
2030 - 2100, low sediment, low organic, 1.65 m sea level rise
2030 - 2100, high sediment, low organic, 0.52 m sea level rise
2030 - 2100, high sediment, low organic, 1.65 m sea level rise
