Explore Species Explore Exposure Datasets Explore Toxicity Datasets

What is CalEcotox?

CalEcotox is a repository that provides data for California ecotoxicological risk assessments.  A relational, species-driven database, it combines physiological and ecological parameters and toxicity data for more than 90 California mammals, birds, reptiles and amphibians. 

Originally developed in the late 1990s in collaboration with the University of California, Davis, the database has now been updated and redesigned to make data searches and retrieval more flexible and user friendly. Several new species were added, based on input received from representatives at other state and federal agencies who conduct ecotoxicological risk assessments in California.

CalEcotox collates species-specific information for approximately 30 exposure factors (e.g., body weights, ingestion rates, seasonal activities and population dynamics) commonly used to estimate exposure to contaminants. The exposure factors in CalEcotox were patterned after the US Environmental Protection Agency (US EPA) Wildlife Exposure Factor Handbook (US EPA, 1993) but augment US EPA's efforts by including information for more than 90 California wildlife species. In addition to exposure factors, toxicological data for population-level to individual-level effects have been included for these species, when available.  Data included in CalEcotox have been retrieved from publicly available scientific literature.

What’s new in CalEcotox?

  • New data added! We updated the original dataset by adding about 400 new references for toxicity and exposure factors, resulting in over 1900 new data points, with approximately 496 exposure values and 1,446 toxicity values.
  • New species added! We added over 30 new species to CalEcotox to further extend its utility for ecotoxicological risk assessors. This includes five bird species (Ashy Storm Petrel; California Black Rail; Snowy Egret, Turkey Vulture, and American Robin); two reptiles (Pacific Green Turtle and California Whipsnake); 9 amphibians (8 salamanders and one frog), 18 mammals (all bat species) and one fish (Longjaw Mudsucker). The selection of new species was based on input from external stakeholders.
  • New ways to search and export data! CalEcotox now provides greater flexibility for data searches and retrieval. Data sets can be extracted based on species or chemical(s), and can be further tailored by selecting specific exposure or toxicity endpoints. Users can search for data based on one or multiple species, and one or multiple chemicals, and search results can be further narrowed by selecting specific exposure or toxicity endpoints. Datasets are linked to the original primary data source to provide context and can be exported as CSV files.
OEHHA California Office of Environmental Health Hazard Assessment