For this project, we focus on two groups of invertebrates, mollusks and echinoderms, with the bulk of the work to date done on mollusks. These groups were chosen because they are diverse, ecologically important, well-sampled and commonly harvested in the rocky intertidal.
At present, CBRISC is limited to the five most southern coastal counties in California (San Diego, Orange, Los Angeles, Ventura, and Santa Barbara). These counties encompass all of coastal California south of the important biogeographic break at Point Conception.
No limits are placed on the temporal scope of this project. In practice, we are limited to the last ~ 100 years, as natural history records earlier than this are generally too sparse.
Historical data on species occurrences come from three sources: museum collections, private collections, and published literature.
We are collecting occurrence data from the following seven natural history museums: The California Academy of Sciences, The Los Angeles County Museum of Natural History, The National Museum of Natural History, The San Diego Natural History Museum, The Santa Barbara Museum of Natural History, The Scripps Institution of Oceanography Benthic Invertebrate Collection, The University of California Museum of Paleontology.
Some private collections contain very important records of species occurrences in Southern California. We are grateful to Carole and Jules Hertz for providing us access to their collections.
Published papers, including dissertations and government reports, sometimes record relevant information on species occurrences over time at various localities (click here to open in a new window a partial list of published references used as CBRISC data sources).