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