File Geodatabase Feature Class
Tags
Poomacha Fire, amphibian, Harris Fire, San Diego County, monitoring, environment, California, Otay Fire, Arroyo Toad, Cedar Fire, Witch Fire, biota
Approximately 300,000 acres were burned in the Otay and Cedar Fires in San Diego County in fall of 2003. In 2007, San Diego County saw another 300,000 acres burn in the Witch, Harris, and Poomacha fires, of which more than 60,000 acres had burned just four years prior in the previous round of fires. These burned lands included a large extent of the natural habitats of the San Diego County Multiple Species Conservation Program (MSCP) planning area. The US Geological Survey (coordinating with the US Fish and Wildlife Service, California Department of Fish and Game, and County of San Diego) is investigating how specific target species will respond to these massive fires and resultant changes in vegetation communities, vegetation structure, and prey availability over a five-year time period. The taxa being investigated includes the arroyo toad. Investigations include comparisons of post-burn conditions to pre-burn baseline conditions, based on the availability of USGS pre-burn data for all study taxa within the footprint of the fires, as well as comparisons of responses between burned and unburned control sites. The ultimate goal of this study is to elucidate information that will aid in future land management/planning and reserve design decisions so that they include considerations of the effects of large wildfires on the biological community structure and function, and especially those species covered by habitat conservation plans such as the San Diego County MSCP plan. These data represent survey locations for the focused arroyo toad occupancy surveys.
This data set includes the results of the 2008 and 2009 surveys for arroyo toads within six study sites that burned in either the 2003 or 2007 fires: Boden Canyon, Santa Ysabel Creek (including upper San Dieguito River), upper San Diego River (including Cedar and Boulder Creeks), Cottonwood Creek, upper Sweetwater River, and Kimbal Valley. Survey reaches were selected and surveyed following established USGS protocols for monitoring of arroyo toads that are currently in use elsewhere in San Diego County. In order to maximize geographic coverage and power to detect trends, the streams were divided into 250 meter survey reaches, stratified and subsampled such that suitable sites were sampled three times each year. Arroyo toad observations along with other aquatic vertebrate, habitat, water quality and weather observations were collected at each of the survey reaches. Observations of other species of interest (incidentals) were recorded during the surveys as well. This design will be compatible with the arroyo toad monitoring studies already being conducted by USGS and will allow for integration of data to better assess trends in San Diego County as well as lend itself to a monitoring program for the arroyo toad in burned areas.
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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.
Use restricted to government agencies. Positional accuracy of individual locations is limited by: accuracy of satellite GPS locations, observer error, and possible data entry errors. Although, all reasonable attempts have been made to limit these factors, positional accuracy for any individual point should not necessarily be considered minimal. The appropriateness of multiple scales of inference, is the end-users responsibility to justify and the originators assume no responsibility for incorrect or misleading uses of this data. Recommended Citation: USGS. (2009, Dec 1). PostFireAT09 [dsXXX]. Calif. Dept. of Fish and Game. Biogeographic Information and Observation System (BIOS). Retrieved DATE from http://bios.dfg.ca.gov
Extent
| West | -117.086598 | East | -116.531174 |
| North | 33.141490 | South | 32.556635 |
| 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.
Use restricted to government agencies. Positional accuracy of individual locations is limited by: accuracy of satellite GPS locations, observer error, and possible data entry errors. Although, all reasonable attempts have been made to limit these factors, positional accuracy for any individual point should not necessarily be considered minimal. The appropriateness of multiple scales of inference, is the end-users responsibility to justify and the originators assume no responsibility for incorrect or misleading uses of this data. Recommended Citation: USGS. (2009, Dec 1). PostFireAT09 [dsXXX]. Calif. Dept. of Fish and Game. Biogeographic Information and Observation System (BIOS). Retrieved DATE from http://bios.dfg.ca.gov