Federally Endangered Species and Species of Special Concern
San Diego Fairy Shrimp, California Gnatcatcher, Burrowling Owl
San Diego Fairy Shrimp
A total of 49 seasonal features were surveyed, according to the USFWS 1996 guidelines, for the presence/absence of federally-listed vernal pool branchiopods. In 8 of the seasonal features, the federally endangered San Diego fairy shrimp (Branchinecta sandiegonensis) was positively detected; the common versatile fairy shrimp (Branchinecta lindahli) occupied an additional 26 seasonal features; 7 features were void of fairy shrimp; 3 were considered unsuitable habitat by the USFWS; and, 4 contained limited number of cysts (n=1-4), however, the features were incapable of supporting sufficient inundation duration for shrimp reproduction.
Final Cumulative Fairy Shrimp Report
Submitted to U.S. Fish and Wildlife Services
Current Surveys 2014
2009 Burrowing Owl Habitat Assessment
Winter Burrowing Owl Map
USFWS Coastal California Gnatcatcher Critical Habitat
Vernal or ephemeral pools, are temporary pools of water. They are usually devoid of fish, and thus allow the safe development of natal amphibian and insect species. Most pools are dry for at least part of the year and fill with the winter rains. Pools may remain at least partially filled with water over the course of a year or more, but all vernal pools dry up periodically.
They are called vernal pools because they are often, but not necessarily, at their peak depth in the spring (“vernal” meaning of, relating to, or occurring in the spring). Despite being dry at times, once filled they teem with life making them an important asset to the ecology of an area. The Banning Ranch area hosts many vernal pools.