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Annual Biomass Data (2001-2021) - Litter Biomass 2001
Biomass estimates for shrubland-dominated ecosystems in southern California have, to date, been limited to national or statewide efforts which can underestimate the amount of... -
Functional Species Richness - Insectivores
Functional groups are sets of species that share life history characteristics that perform particular functions within an ecosystem. The six functional groups are represented... -
Canopy Cover
This layer represents horizontal cover fraction occupied by tree canopies. Maps community type & fire regime, as well as available habitat for tree-dwelling species. -
California Spotted Owl (CSO) Suitable Habitat
California spotted owl is continuously distributed on the western slope of the Sierra and inhabits elevations ranging from roughly 1,000 to over 7,000 feet. It is a Region 5... -
Hispanic and Latino Population Concentration - Northern CA
Relative concentration of the Northern California region's Hispanic/Latino population. The variable HISPANIC records all individuals who select Hispanic or Latino in response to... -
Total Aboveground Carbon
Identifying ecosystem carbon is essential to land managers and the Total Aboveground Carbon metric provides an estimate of the amount of existing carbon and its location on... -
Fire Return Interval Departure (Frid) - Current Fire Return Interval -Since 1970
The fire return interval departure (FRID) analysis quantifies the difference between current and pre-settlement fire frequencies, allowing managers to target areas at high risk... -
American Indian Land Areas
Lands under the control of federally recognized Tribes. These boundaries have been clipped to the boundary of California so that only the portions of each Tribal area that fall... -
Probability of Fire Severity (Moderate)
These metrics represent the probability of low, moderate, or high severity fire, respectively, as constructed by Pyrologix LLC. Operational-control probability rasters indicate... -
Central CA Cost of Potential Treatments
The principle method for maintaining or restoring resilience to the Central Coast landscape involves vegetation treatments. There are many variations on treatments involving... -
Shrublands With Low Natural Regeneration Potential Post-Fire
Identifying locations where shrubland vegetation will not recover naturally post-fire is a challenge given the vast areas that are regularly burned in southern California. When... -
Density - Snags - 20" - 29.9"
The number of standing dead trees (snags) on the landscape is important to forest managers; high densities of standing dead trees are known to contribute to extreme fire events... -
Actual Evapotranspiration and Precipitation Ratio During Drought
Plants respond to conditions in their immediate vicinity. Thus, to understand the vegetative moisture stress during drought, it is important to measure the local moisture... -
Gold-Spotted Borer Presence and Rate of Spread
Tree mortality and other forest damage is detected by annual aerial surveys over forested lands by state and federal agency staff. The primary purpose of the aerial survey is to... -
Risk of Tree Dieoff During Drought
A quantitative continuous variable that reflects the risk of tree dieoff during a significant drought period (SPI48 drought = -2). -
Low Income Population Concentration - Southern CA
Relative concentration of the estimated number of people in the Southern California region that live in a household defined as "low income." There are multiple ways to define... -
Fire Return Interval Departure (Frid) - Mean Percent - Since 1970
Percent FRID (PFRID) quantifies the extent in percentage to which recent fires (i.e., since 1970) are burning at frequencies similar to those that occurred prior to Euro-... -
Density - All Trees Per Acre >1" Dbh
Trees per acre (TPA) is a common forest structure measurement that provides a useful index of forest and habitat condition. Many other metrics can be derived from having... -
Drought Sensitivity
This layer represents an estimation of the probability that drought will substantially impact post-fire shrub recovery, potentially leading to vegetation type conversion to... -
Fire Ignition Probability Human Cause
These rasters depict the predicted human- and lightning-caused ignition probability for the state of California. Ignition is regulated by complex interactions among climate,...