Comparison of CNDDB and BIOS

CNDDB and BIOS – Complementary Systems

California Natural Diversity Database (CNDDB) Biogeographic Information and Observation System (BIOS)
What Is It? Rare species and communities database/dataset Online map viewer with a warehouse of datasets, one of which is the CNDDB
Data Rare species and communities only Any environmental/biological information with a spatial component
Source Materials Raw source materials are preserved, tracked, and available at CDFW Raw source materials remain with the contributor
Data Layer Single layer; records within the layer are aggregations of information from numerous data sources including field survey forms, specimens, environmental documents, published literature Multiple layers; records within each layer are from a single data contributor
Data Format All records are in a standardized format, facilitating comparisons of data from varying data sources Data layers are non-standardized (using different scales, methods, details, etc.) making comparisons among layers potentially difficult.
Quality Control All data are extensively examined to ensure accuracy of output Contributor is responsible for accuracy of data; data are examined for consistency, clarity, and adherance to general format.
Metadata Extensive metadata developed and maintained by CNDDB staff Layer-specific metadata provided by contributor using a standard format
Data Processing Data are prioritized and available after processing and quality control Data are available quickly after minimal processing
Update Frequency Continuously Variably
Crossover CNDDB spatial data appear in BIOS as a layer Appropriate rare species data from BIOS are incorporated into CNDDB
Support Contact CNDDB staff Contact data contributor indicated in metadata
Public Availability Products are licensed from CDFW and exempt from FOIA and PRA requests Products are subject to FOIA and PRA requests

FOIA = Freedom of Information Act
PRA = California Public Records Act
CDFW = California Department of Fish and Wildlife