Although the "island" salt pond levees in the Napa Marsh and the natural high marsh habitats in such areas as Fagan Marsh provide such refugia habitat, in most locations it is largely absent and may be a limiting factor for populations of rails and salt marsh harvest mice.
(the "island" salt pond levees in the Napa Marsh and the natural high marsh habitats in such areas as Fagan Marsh; provide; such refugia habitat) (it; is; largely absent; L:in most locations)
the "island" salt pond levees in the Napa Marsh and the natural high marsh habitats in such areas as Fagan Marsh it
provide is
such refugia habitat
largely absent L:in most locations