File Geodatabase Feature Class
Tags
biota, least tern, colony, Southern California, California, tern, chronology, California coast, San Francisco Bay, nesting, environment, breeding, reproduction, California least tern, productivity, beach, estuary, south coast, coast
What the database was designed to do. The database is designed to track, over time, the distribution and numbers of breeding terns, and their breeding success and nesting chronology. How the database is designed to be used. The database is designed to be used by researchers to monitor least tern breeding success and the dynamics in their breeding population size and distribution. It also can serve as a information source to evaluate project impacts.
This is a DRAFT dataset. It is posted here to solicit corrections, edits and comments on both the colony locations and the data. The metadata for this dataset covers both the shapefile and the extended table including the field attributes for both the .dbf of the shapefile and of the .dbf extended table. This dataset displays the location of California least tern breeding colonies and documents the size of those colonies and their breeding success and chronology. The biologica data comes from annual reports produced by survey compiler/ coordinators and has been published by the Department. Seven annual reports documenting the California least tern monitoring over the 13 breeding seasons reported in this data set are available online at http://www.dfg.ca.gov/hcpb/info/bm_intro.shtml . This is not a complete dataset; the locations of a number of nesting colonies are not displayed here as we do not have a record of the location. Likewise, the locations we do have may be showing locations that are no longer used but we do not have the more current locations. Time period covered. This dataset covers the information provided for the 1988 through 2001 breeding seasons. Number of records. There are 40 nesting colonies sites displayed here. There are 587 records of the annual status of a nesting colony over 13 years (31 to 57 records per year), but many of them will not be displayed because we cannot attach them to a known colony location. Geographic extent of the records. California least tern breeding colonies documented here occur from the very upper part of San Francisco Bay south along the California coast to within 3 miles of the border with Mexico. Currently this data set does not include a location of an inland breeding site in Kings County documented in 1998 and 2000 which is in the database. Base data structure. The dataset consists of a shapefile and a data table; the shapefile displays poloygons representing the known locations of most of the breeding colonies. The data table provides the quantitative information on the tern nesting success and chronology at the breeding colonies. What each record represents. Each data record contains summary information for a colony in a single year. This information includes the number of breeding pairs, number of eggs laid and hatched, number of young fledged, and the chronology of observations and of tern nesting.
There are no credits for this item.
Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.
Not to be distributed except with the permission of the data contributor (Lyann Comrack at lcomrack@dfg.ca.gov). Information from this data set may be used, analyzed, and summarized but the Department should be acknowledged as the source of the data.
Extent
| West | -122.325669 | East | -116.887881 |
| North | 37.927737 | South | 32.552507 |
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:150,000,000 |
Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.
Not to be distributed except with the permission of the data contributor (Lyann Comrack at lcomrack@dfg.ca.gov). Information from this data set may be used, analyzed, and summarized but the Department should be acknowledged as the source of the data.