Dryad
Published June 30, 2023 | Version v1
Dataset Open

Obligate resprouting, obligate seeding, and facultative seeding shrub species in California's Mediterranean-type climate region

Creators

  • 1. University of California, Davis
  • 2. RedCastle Resources, Inc., Contractor to: USDA Forest Service Western Wildlands Environmental Threat Assessment Center (WWETAC)*

Description

Mediterranean-climate region (MCR) shrublands have evolved a set of regeneration strategies in response to periodic, high-intensity wildfires: obligate seeding (OS), obligate resprouting (OR), and facultative seeding (FS) species. Spatial variation is seen in different regeneration strategies. In California, previous studies have found a higher abundance of OR species in mesic environments and OS species in xeric environments (Meentenmeyer et al. 2001). To date, however, data on their spatial distribution at a regional scale in California is limited and presents a significant information gap for resource managers of shrub-dominated landscapes. We developed a multinomial model using temporally dynamic and static variables to predict the distribution of the three shrub post-fire regeneration strategies, plus trees and herbs, in southern California. Cross-validation showed 50% of the predicted values for each of the five plant groups were within 8–24 percent of the actual value (Underwood et al. 2023). Spatial data for OS, OR, and FS provide an important contribution to resource management to help quantify carbon storage of shrublands and prioritize areas for post-fire restoration.

Notes

The file archive here is named SoCal_postfire_regen_type_v1.zip and is composed of five files that cover the southern California ecoregion (Figure 1): 

  • SoCal_ObResprouters_pp_v1.tif = proportion of obligate resprouter biomass per pixel
  • SoCal_ObSeeders_pp_v1.tif = proportion of obligate seeder biomass per pixel
  • SoCal_FacSeeders_pp_v1.tif = proportion of facultative seeder biomass per pixel
  • SoCal_Tree_pp_v1.tif = proportion of tree biomass per pixel
  • SoCal_Herb_pp_v1.tif  = proportion of herb biomass per pixel

Apply a scale factor of .01 to the raster values to convert to proportions.

The dimensions of each 8-bit geotiff raster file are 20632 rows by 15602 columns and the bounding box coordinates are 36.79, -121.96 (upper left) and 32.47, -115.23 (lower right), in decimal degrees. Pixel size is 30 meters and the files are projected in the California Albers Equal Area projection (EPSG 3310).  These rasters are encoded as bytes with a NoData value of 0. Areas outside of the study area extent and those pixels where the biomass proportion is 0 are represented as NoData.

Intended users of this dataset include resource managers and researchers who are assessing carbon storage and shrublands and prioritizing post-fire shrubland restoration. This dataset is made available under a CC0 license.

Funding provided by: California Department of Forestry and Fire Protection
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100020524
Award Number:

Funding provided by: USDA Forest Service Western Wildlands Environmental Threat Assessment Center*
Crossref Funder Registry ID:
Award Number:

Funding provided by: USDA Forest Service Pacific Southwest Program*
Crossref Funder Registry ID:
Award Number:

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Additional details

Related works

Is cited by
10.3389/fevo.2023.1158265 (DOI)