SDE Feature Class
Tags
Streptocephalus woottoni, Branchinecta lindahli, Riverside fairy shrimp, vernal pool, Pogogyne abramsii, inland waters, 2003, San Diego, Pogogyne nudiscula, environment, Western toad, San Diego fairy shrimp, Navarretia fossalis, MSCP, little mousetail, Branchinecta sandiegonensis, Otay mesa mint, California Orcutt grass, Orcuttia californica, Spea hammondi, Eryngium aristulatum, Bufo boreas, San Diego button celery, Western spadefoot toad, San Diego mesa mint, Pacific tree frog, spreading prostrate navarretia, versatile fairy shrimp, Hyla regilla, Myosurus minimus, biota, fairy shrimp, amphibians, plants
This project utilized advanced geospatial technology to update information on the location of individual vernal pools and complexes, including documentation of changes in vernal pool distribution due to development and restoration efforts subsequent to Bauder's report (1986). This inventory expands and updates existing information, and provides the basis for a gap analysis of vernal pool conservation efforts within the City of San Diego. The updated inventory provides current and expanded information regarding the location of vernal pool basins and rare, threatened, and endangered biota within the City of San Diego. The resulting data, which includes vernal pools on private and public lands, will be analyzed to determine the extent of vernal pool protection, as well as current preservation and management needs. This new information will serve as the basis for updating the City of San Diego Vernal Pool Management Plan (1996), which identifies and prioritizes management activities for vernal pools on land owned by the City of San Diego. DATA ASSUMPTIONS AND LIMITATIONS: Vernal pool ecosystems are extremely sensitive to inter- and intra-annual environmental variability. The size and number of inundated basins, and therefore their associated biota, are directly correlated to the amount and timing of precipitation. Rainfall during the 2003 water year has been consistent with average recorded precipitation in San Diego over the past 153 years (Figure 2; http://nrm.dfg.ca.gov/documents/ContextDocs.aspx?cat=BIOS&sub=ds188 ), and the majority of basin areas were recorded during March when cumulative precipitation for 2003 equaled cumulative average rainfall. Based upon the amount and timing of rainfall, it is believed that the data gathered for 2003 represents a "typical" year for vernal pool biota.
In 2002, the City of San Diego (City) received funding through a U. S. Fish and Wildlife Service (USFWS) Section 6 Planning Grant to complete an inventory and management plan of vernal pools within the Citys jurisdiction. This inventory (performed during 2003) builds on several previous studies and surveys, which were used to determine the general locations of individual vernal pools and complexes. However, much of the area currently owned by the City and other jurisdictions has never been surveyed for specific vernal pools and, in many cases, historical maps do not accurately represent the existing basins. This inventory focuses on these areas. This inventory does not, however, include vernal pools known to occur on military lands (i.e., MCAS Miramar, Navy Chollas Heights) within the City but not under City jurisdiction. A comprehensive vernal pool plant survey has been completed for each complex within the City. City staff estimated percent cover for the six vernal pool species listed as endangered or threatened by the state and/or federal government, or considered covered (i.e. adequately conserved) by the Multiple Species Conservation Program (MSCP).
Data was collected/compiled by City of San Diego, Planning, MSCP with assistance from Helix Environmental, EDAW, and RECON.
For use by California Department of Fish and Wildlife (CDFW) staff and California Natural Diversity Database (CNDDB) subscribers. Due to the sensitive status of the species in this data, CDFW policy restricts its access.
Extent
| West | -117.249554 | East | -116.749797 |
| North | 32.976956 | South | 32.545241 |
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:150,000,000 |
For use by California Department of Fish and Wildlife (CDFW) staff and California Natural Diversity Database (CNDDB) subscribers. Due to the sensitive status of the species in this data, CDFW policy restricts its access.