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