Pinyon and juniper expansion areas and persistent woodlands in the Snake River Plain, Northern Basin and Range, and Central Basin and Range level III ecoregions in the western United States

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: Chambers, Jeanne C.
Originator: Brown, Jessi L.
Originator: Reeves, Matthew C.
Originator: Strand, Eva K.
Originator: Ellsworth, Lisa M.
Originator: Tortorelli, Claire M.
Originator: Urza, Alexandra K.
Originator: Short, Karen C.
Publication_Date: 2024
Title:
Pinyon and juniper expansion areas and persistent woodlands in the Snake River Plain, Northern Basin and Range, and Central Basin and Range level III ecoregions in the western United States
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Fort Collins, CO
Publisher: Forest Service Research Data Archive
Online_Linkage: https://doi.org/10.2737/RDS-2024-0007
Description:
Abstract:
This data publication contains raster spatial data (GeoTIFF) representing areas of pinyon-juniper (PJ) expansion into sagebrush ecosystems and persistent woodland and expansion within the Great Basin region of the western United States, which includes portions of Nevada, Idaho, Oregon, and Utah. To determine areas for potential fuel treatments, we overlayed PJ cover onto the dominant sagebrush associations. We used the Rangeland Analysis Platform to identify three phases (I, II, and III) or successional stages of PJ expansion based on the amount of tree cover expected for the different sagebrush associations. Because fuel treatments are conducted primarily in the early phases (Phase I and II successional stages) of tree expansion, it is important to designate these phases on the landscape. To characterize the persistent woodlands, we identified the LANDFIRE Biophysical Settings (BPS) categories that represented persistent pinyon and juniper (PJ; Pinus monophylla, Juniperus occidentalis and/or J. osteosperma) woodlands within the dominant sagebrush associations. These areas are considered high value resources and are excluded from fuel treatments. The data for PJ expansion areas and persistent woodlands represent conditions from 2016-2022.
Purpose:
In sagebrush ecosystems the responses to woody fuel treatments are highly dependent on the dominant sagebrush association, the presence of pinyon-juniper expansion, and as their resilience to wildfire and fuel treatments (resilience) and resistance to invasive annual grasses (resistance). New ecologically relevant and climate sensitive indicators of resilience and resistance based on climate and water availability have been developed recently. However, information is also needed on the locations and extents of the dominant sagebrush associations, the different phases (successional stages) of pinyon-juniper (PJ) expansion into the shrublands, if any, and the extent of persistent pinyon-juniper (PJ) woodlands. This data layer provides the locations and extents of PJ expansion areas and persistent PJ woodlands within the dominant sagebrush associations.
Supplemental_Information:
Data were originally published on 1/18/2024. On 07/21/2026, minor metadata updates were made, including the addition of information regarding the data also being available in a second repository.

For more information about these data and this study, see Chambers et al. (2023; https://doi.org/10.1186/s42408-023-00230-2).
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20160101
Ending_Date: 20221231
Currentness_Reference:
Ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Description_of_Geographic_Extent:
These data represent the Snake River Plain, Northwestern Basin and Range, and Central Basin and Range level III ecoregions in the western United States and is also described as the Great Basin which includes portions of Nevada, Idaho, Oregon, and Utah.
Bounding_Coordinates:
West_Bounding_Coordinate: -122.005965
East_Bounding_Coordinate: -109.751372
North_Bounding_Coordinate: 45.519785
South_Bounding_Coordinate: 36.148687
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: environment
Theme:
Theme_Keyword_Thesaurus: National Research & Development Taxonomy
Theme_Keyword: Ecology, Ecosystems, & Environment
Theme_Keyword: Landscape ecology
Theme_Keyword: Fire
Theme_Keyword: Fire effects on environment
Theme_Keyword: Fire ecology
Theme_Keyword: Forest & Plant Health
Theme_Keyword: Climate effects
Theme_Keyword: Invasive species
Theme_Keyword: Inventory, Monitoring, & Analysis
Theme_Keyword: Resource inventory
Theme_Keyword: Natural Resource Management & Use
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: woody fuel treatments
Theme_Keyword: ecological resilience
Theme_Keyword: resistance to invasion
Theme_Keyword: treatment durability
Theme_Keyword: pinyon-juniper expansion
Theme_Keyword: persistent woodlands
Theme_Keyword: Fuel Treatment Response Groups
Theme_Keyword: Joint Fire Science Program
Theme_Keyword: JFSP
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Great Basin
Place_Keyword: Nevada
Place_Keyword: Oregon
Place_Keyword: Idaho
Place_Keyword: Utah
Place_Keyword: Northern Basin and Range
Place_Keyword: Central Basin and Range
Place_Keyword: Snake River Plain
Taxonomy:
Keywords/Taxon:
Taxonomic_Keyword_Thesaurus:
None
Taxonomic_Keywords: multiple species
Taxonomic_Keywords: plants
Taxonomic_Keywords: vegetation
Taxonomic_Keywords: Pinus monophylla
Taxonomic_Keywords: singleleaf pinyon
Taxonomic_Keywords: Juniperus occidentalis
Taxonomic_Keywords: western juniper
Taxonomic_Keywords: Juniperus osteosperma
Taxonomic_Keywords: Utah juniper
Taxonomic_System:
Classification_System/Authority:
Classification_System_Citation:
Citation_Information:
Originator: ITIS
Publication_Date: 2023
Title:
Integrated Taxonomic Information System (ITIS)
Geospatial_Data_Presentation_Form: on-line database
Other_Citation_Details:
[October, 19, 2023]; CC0
Online_Linkage: https://www.itis.gov
Online_Linkage: https://doi.org/10.5066/F7KH0KBK
Taxonomic_Procedures:
Taxonomic_Classification:
Taxon_Rank_Name: Kingdom
Taxon_Rank_Value: Plantae
Applicable_Common_Name: plants
Taxonomic_Classification:
Taxon_Rank_Name: Subkingdom
Taxon_Rank_Value: Viridiplantae
Applicable_Common_Name: green plants
Taxonomic_Classification:
Taxon_Rank_Name: Infrakingdom
Taxon_Rank_Value: Streptophyta
Applicable_Common_Name: land plants
Taxonomic_Classification:
Taxon_Rank_Name: Superdivision
Taxon_Rank_Value: Embryophyta
Taxonomic_Classification:
Taxon_Rank_Name: Division
Taxon_Rank_Value: Tracheophyta
Applicable_Common_Name: vascular plants
Applicable_Common_Name: tracheophytes
Taxonomic_Classification:
Taxon_Rank_Name: Subdivision
Taxon_Rank_Value: Spermatophytina
Applicable_Common_Name: spermatophytes
Applicable_Common_Name: seed plants
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Pinopsida
Applicable_Common_Name: conifers
Taxonomic_Classification:
Taxon_Rank_Name: Subclass
Taxon_Rank_Value: Pinidae
Taxonomic_Classification:
Taxon_Rank_Name: Order
Taxon_Rank_Value: Pinales
Applicable_Common_Name: pines
Taxonomic_Classification:
Taxon_Rank_Name: Family
Taxon_Rank_Value: Pinaceae
Applicable_Common_Name: pines
Taxonomic_Classification:
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Pinus
Applicable_Common_Name: pine
Taxonomic_Classification:
Taxon_Rank_Name: Species
Taxon_Rank_Value: Pinus monophylla
Applicable_Common_Name: singleleaf pinyon
Applicable_Common_Name: nut pine
Applicable_Common_Name: one-leaf pine
Taxonomic_Classification:
Taxon_Rank_Name: Family
Taxon_Rank_Value: Cupressaceae
Applicable_Common_Name: cypress
Applicable_Common_Name: redwood
Taxonomic_Classification:
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Juniperus
Applicable_Common_Name: juniper
Applicable_Common_Name: cedar
Applicable_Common_Name: redcedar
Taxonomic_Classification:
Taxon_Rank_Name: Species
Taxon_Rank_Value: Juniperus occidentalis
Applicable_Common_Name: western juniper
Taxonomic_Classification:
Taxon_Rank_Name: Species
Taxon_Rank_Value: Juniperus osteosperma
Applicable_Common_Name: Utah juniper
Access_Constraints: None
Use_Constraints:
These data were collected using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation:

Chambers, Jeanne C.; Brown, Jessi L.; Reeves, Matthew C.; Strand, Eva K.; Ellsworth, Lisa M.; Tortorelli, Claire M.; Urza, Alexandra K.; Short, Karen C. 2024. Pinyon and juniper expansion areas and persistent woodlands in the Snake River Plain, Northern Basin and Range, and Central Basin and Range level III ecoregions in the western United States. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2024-0007
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of Idaho, Department of Forest, Rangeland, and Fire Sciences
Contact_Person: Eva K. Strand
Contact_Address:
Address_Type: mailing
Address: 875 Perimeter Drive
Address: MS 1135
City: Moscow
State_or_Province: ID
Postal_Code: 83844
Country: USA
Contact_Voice_Telephone: contact via email
Contact_Electronic_Mail_Address: evas@uidaho.edu
Contact Instructions: This contact information was current as of original publication date. For current information see Contact Us page on: https://doi.org/10.2737/RDS.
Browse_Graphic:
Browse_Graphic_File_Name: \Supplements\Juniper_Map_Barplot_2023-09-14.tif
Browse_Graphic_File_Description:
Areal extent of pinyon-juniper (PJ) expansion areas by phase of expansion, PJ persistent woodlands, and sagebrush associations with no PJ cover in the Northern Basin and Range (NBR), Snake River Plain (SRP), and Central Basin and Range (CBR). Bar graph at the upper right shows the proportion of the area of each category within each ecoregion. PJ areas are comprised of singleleaf pinyon (Pinus monophyla), western juniper (Juniperus occidentalis), and/or Utah juniper (J. osteosperma).
Browse_Graphic_File_Type: TIF
Data_Set_Credit:
This work was supported by a grant from the Joint Fire Science Program (JFSP Project ID: 19-2-02-11): https://www.firescience.gov. Additional funding also provided by the USDA Forest Service, Rocky Mountain Research Station.


Author Information:

Jeanne C. Chambers
USDA Forest Service, Rocky Mountain Research Station
https://orcid.org/0000-0003-3111-269X

Jessi L. Brown
USDA Forest Service, Rocky Mountain Research Station
https://orcid.org/0000-0002-6126-7951

Matthew C. Reeves
USDA Forest Service, Rocky Mountain Research Station
https://orcid.org/0000-0002-3948-9574

Eva K. Strand
University of Idaho
https://orcid.org/0000-0003-3968-6671

Lisa M. Ellsworth
Oregon State University
https://orcid.org/0000-0001-7232-2656

Claire M. Tortorelli
University of California, Davis
https://orcid.org/0000-0001-9493-9817

Alexandra K. Urza
USDA Forest Service, Rocky Mountain Research Station
https://orcid.org/0000-0001-9795-6735

Karen C. Short
USDA Forest Service, Rocky Mountain Research Station
https://orcid.org/0000-0002-3383-0460
Native_Data_Set_Environment:
Most geospatial manipulations were performed in R 4.3.0, with some additional work occurring in ArcGIS Pro. Tabular data from the LANDFIRE Remap 2016 LANDFIRE Reference Database (LFRDB) (see source citation later in the metadata) were inspected and filtered in Microsoft Access.
Cross_Reference:
Citation_Information:
Originator: Chambers, Jeanne C.
Originator: Brown, Jessi L.
Originator: Reeves, Matthew C.
Originator: Strand, Eva K.
Originator: Ellsworth, Lisa M.
Originator: Tortorelli, Claire M.
Originator: Urza, Alexandra K.
Originator: Short, Karen C.
Publication_Date: 2023
Title:
Fuel treatment response groups for fire-prone sagebrush landscapes
Geospatial_Data_Presentation_Form: journal article
Series_Information:
Series_Name: Fire Ecology
Issue_Identification: 19: 70
Online_Linkage: https://doi.org/10.1186/s42408-023-00230-2
Online_Linkage: https://research.fs.usda.gov/treesearch/67189
Analytical_Tool:
Analytical_Tool_Description:
R is a system for statistical computation and graphics. It consists of a language plus a run-time environment with graphics, a debugger, access to certain system functions, and the ability to run programs stored in script files.
Tool_Access_Information:
Online_Linkage: https://www.R-project.org
Tool_Access_Instructions:
See website for instructions.
Tool_Citation:
Citation_Information:
Originator: R Core Team
Publication_Date: 2023
Title:
R: A Language and Environment for Statistical Computing
Geospatial_Data_Presentation_Form: software
Publication_Information:
Publication_Place: Vienna, Austria
Publisher: R Foundation for Statistical Computing
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
No formal tests or field validation were performed to assess attribute accuracy and look for data errors. Instead, the final map products were evaluated by subject matter experts for plausibility by comparison to satellite imagery and summaries of extents of coverage at ecoregional scales.
Logical_Consistency_Report:
The data are logically consistent. The consistency was verified as part of the quality assurance that occurred during data analysis.
Completeness_Report:
Pinyon and juniper (PJ) expansion phase and persistent woodland values are supplied only for the portions of the three focal ecoregions (Northern Basin and Range, Central Basin and Range, and Snake River Plain) that lie within the perimeter of the sagebrush biome. The dominant sagebrush layer had been masked to exclude barren land cover, agriculture, development, roads, and forests other than pinyon-juniper woodlands, and these exclusions were carried through to the PJ layer.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Chambers, Jeanne C.
Originator: Brown, Jessi L.
Originator: Reeves, Matthew C.
Originator: Strand, Eva K.
Originator: Ellsworth, Lisa M.
Originator: Tortorelli, Claire M.
Originator: Urza, Alexandra K.
Originator: Short, Karen C.
Publication_Date: 2024
Title:
Dominant sagebrush associations of the Snake River Plain, Northwestern Basin and Range, and Central Basin and Range level III ecoregions in the western United States
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Fort Collins, CO
Publisher: Forest Service Research Data Archive
Online_Linkage: https://doi.org/10.2737/RDS-2024-0006
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20160101
Ending_Date: 20221231
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
Chambers et al. (2024)
Source_Contribution:
Dominant sagebrush association
Source_Information:
Source_Citation:
Citation_Information:
Originator: Allred, Brady W.
Originator: Bestelmeyer, Brandon T.
Originator: Boyd, Chad S.
Originator: Brown, Christopher
Originator: Davies, Kirk W.
Originator: Duniway, Michael C.
Originator: Ellsworth, Lisa M.
Originator: Erickson, Tyler A.
Originator: Fuhlendorf, Samuel D.
Originator: Griffiths, Timothy V.
Originator: Jansen, Vincent
Originator: Jones, Matthew O.
Originator: Karl, Jason
Originator: Knight, Anna
Originator: Maestas, Jeremy D.
Originator: Maynard, Jonathan J.
Originator: McCord, Sarah E.
Originator: Naugle, David E.
Originator: Starns, Heath D.
Originator: Twidwell, Dirac
Originator: Uden, Daniel R.
Publication_Date: 20210208
Title:
Improving Landsat predictions of rangeland fractional cover with multitask learning and uncertainty
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Methods in Ecology and Evolution
Issue_Identification: 12(5): 841-849
Online_Linkage: https://doi.org/10.1111/2041-210x.13564
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20210101
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
Allred et al. (2021)
Source_Contribution:
Tree cover
Source_Information:
Source_Citation:
Citation_Information:
Originator: LANDFIRE
Originator: Earth Resources Observation and Science Center (EROS)
Originator: U.S. Geological Survey (USGS)
Publication_Date: 20220928
Title:
LANDFIRE 2020 Biophysical Settings (BPS)
Edition: LF 2020 (LF 2.2.0)
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Online_Linkage: http://landfire.cr.usgs.gov/viewer/
Online_Linkage: https://landfire.gov/bps.php
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20170101
Ending_Date: 20201231
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
LANDFIRE 2020 BPS
Source_Contribution:
Biophysical Settings (BPS): Vegetation that may have been dominant on the landscape preEuro-American colonization.
Source_Information:
Source_Citation:
Citation_Information:
Originator: LANDFIRE
Originator: Earth Resources Observation and Science Center (EROS)
Originator: U.S. Geological Survey (USGS)
Publication_Date: 2022
Title:
LANDFIRE 2020 Existing Vegetation Type (EVT)
Edition: LF 2020 (LF 2.2.0)
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Online_Linkage: http://landfire.cr.usgs.gov/viewer/
Online_Linkage: https://landfire.gov/evt.php
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20170101
Ending_Date: 20221231
Source_Currentness_Reference:
Publication Date
Source_Citation_Abbreviation:
LANDFIRE 2020 EVT
Source_Contribution:
Existing Vegetation Type (EVT): complexes of plant communities representing NatureServe's terrestrial Ecological Systems classification
Process_Step:
Process_Description:
We began with the recently developed dominant sagebrush association layer (Chambers et al. 2024), and considered only the portion of the landscape thought to be occupied by sagebrush species. We then used the Rangeland Analysis Platform (Allred et al. 2021) to evaluate tree cover within the dominant sagebrush associations. We mapped sagebrush associations with relatively low site productivity, including low, black or mixed low sagebrush, as pinyon and juniper (PJ) Phase I where tree cover was 1-10% tree cover, Phase II where tree cover was 10-20%, or Phase III where tree cover was >20%. We mapped sagebrush associations with higher site productivity, including basin big, basin/Wyoming big, mountain big, or Wyoming big sagebrush as PJ Phase I where tree cover was 1-10% tree cover, Phase II where tree cover was 10-30%, or Phase III where tree cover was >30%.

We refined the map layer further by removing those areas in LANDFIRE Expected Vegetation Types (LANDFIRE 2020 EVT) dominated by tree species other than pinyon or juniper, including quaking aspen (Populus tremuloides) and mountain mahogany (Cercocarpus ledifolius). Areas removed include (listed by EVT name):
Tr Rocky Mountain Aspen Forest and Woodland
Tr Rocky Mountain Bigtooth Maple Ravine Woodland
Tr Inter-Mountain Basins Subalpine Limber-Bristlecone Pine Woodland
Tr California Montane Jeffrey Pine(-Ponderosa Pine) Woodland
Tr Northern Rocky Mountain Dry-Mesic Montane Mixed Conifer Forest
Tr Northern Rocky Mountain Subalpine Woodland and Parkland
Tr Rocky Mountain Foothill Limber Pine-Juniper Woodland
Tr Rocky Mountain Lodgepole Pine Forest
Tr Southern Rocky Mountain Dry-Mesic Montane Mixed Conifer Forest and Woodland
Tr Southern Rocky Mountain Mesic Montane Mixed Conifer Forest and Woodland
Tr Northern Rocky Mountain Ponderosa Pine Woodland and Savanna
Tr Southern Rocky Mountain Ponderosa Pine Woodland
Tr Rocky Mountain Subalpine Dry-Mesic Spruce-Fir Forest and Woodland
Tr Rocky Mountain Subalpine Mesic-Wet Spruce-Fir Forest and Woodland
Tr Rocky Mountain Subalpine-Montane Limber-Bristlecone Pine Woodland
Tr Sierra Nevada Subalpine Lodgepole Pine Forest and Woodland
Tr Inter-Mountain Basins Aspen-Mixed Conifer Forest and Woodland
Tr Inter-Mountain Basins Curl-leaf Mountain Mahogany Woodland and Shrubland
Tr Middle Rocky Mountain Montane Douglas-fir Forest and Woodland

Finally, we added the areas likely to represent PJ persistent woodlands by identifying areas in which the LANDFIRE LF Zones (geographic subdivisions analogous to Commission for Environmental Cooperation [CEC] ecoregions), Biophysical System Names, and Group Names in the biophysical settings layer (BPS) represented persistent pinyon and juniper woodlands in the study area (LANDFIRE 2020 BPS). Areas added include (listed by LF Zone: Biophysical System Name, and Group Name):
19: Rocky Mountain Foothill Limber Pine-Juniper Woodland, Limber Pine-Rocky Mountain Juniper-3
21: Rocky Mountain Foothill Limber Pine-Juniper Woodland, Limber Pine-Rocky Mountain Juniper-3
13: Great Basin Pinyon-Juniper Woodland, Singleleaf Pinyon-Utah Juniper-3
6: Great Basin Pinyon-Juniper Woodland, Singleleaf Pinyon-Utah Juniper-3
9: Great Basin Pinyon-Juniper Woodland, Singleleaf Pinyon-Utah Juniper-3
7: Great Basin Pinyon-Juniper Woodland, Singleleaf Pinyon-Utah Juniper-3
16: Great Basin Pinyon-Juniper Woodland, Singleleaf Pinyon-Utah Juniper-3
12: Great Basin Pinyon-Juniper Woodland, Singleleaf Pinyon-Utah Juniper-3
17: Great Basin Pinyon-Juniper Woodland, Singleleaf Pinyon-Utah Juniper-3
18: Great Basin Pinyon-Juniper Woodland, Singleleaf Pinyon-Utah Juniper-3
16: Colorado Plateau Pinyon-Juniper Shrubland, Two Needle Pinyon-Utah Juniper-3
13: Colorado Plateau Pinyon-Juniper Woodland, Two Needle Pinyon-Utah Juniper-3
16: Colorado Plateau Pinyon-Juniper Woodland, Two Needle Pinyon-Utah Juniper-3
17: Colorado Plateau Pinyon-Juniper Woodland, Two Needle Pinyon-Utah Juniper-3
6: Columbia Plateau Western Juniper Woodland and Savanna, Western Juniper-Low Sage-3
9: Columbia Plateau Western Juniper Woodland and Savanna, Western Juniper-Low Sage-3
7: Columbia Plateau Western Juniper Woodland and Savanna, Western Juniper-Low Sage-3
12: Columbia Plateau Western Juniper Woodland and Savanna, Western Juniper-Low Sage-3
18: Columbia Plateau Western Juniper Woodland and Savanna, Western Juniper-Low Sage-3
10: Inter-Mountain Basins Juniper Savanna, Western Juniper-Utah Juniper-3
13: Inter-Mountain Basins Juniper Savanna, Western Juniper-Utah Juniper-3
21: Inter-Mountain Basins Juniper Savanna, Western Juniper-Utah Juniper-3
16: Inter-Mountain Basins Juniper Savanna, Western Juniper-Utah Juniper-3
17: Inter-Mountain Basins Juniper Savanna, Western Juniper-Utah Juniper-3
Source_Used_Citation_Abbreviation:
Chambers et al. (2024), Allred et al. (2021), LANDFIRE 2020 BPS, LANDFIRE 2020 EVT
Process_Date: 20230216
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of Idaho, Department of Forest, Rangeland, and Fire Sciences
Contact_Person: Eva K. Strand
Contact_Address:
Address_Type: mailing
Address: 875 Perimeter Drive
Address: MS 1135
City: Moscow
State_or_Province: ID
Postal_Code: 83844
Country: USA
Contact_Voice_Telephone: contact via email
Contact_Electronic_Mail_Address: evas@uidaho.edu
Contact Instructions: This contact information was current as of original publication date. For current information see Contact Us page on: https://doi.org/10.2737/RDS.
Process_Step:
Process_Description:
A copy of this data publication was also published at Zenodo.org.

Chambers, Jeanne C.; Brown, Jessi L.; Reeves, Matthew C.; Strand, Eva K.; Ellsworth, Lisa M.; Tortorelli, Claire M.; Urza, Alexandra K.; Short, Karen C. 2024. Pinyon and juniper expansion areas and persistent woodlands in the Snake River Plain, Northern Basin and Range, and Central Basin and Range level III ecoregions in the western United States [Data set]. Zenodo. https://doi.org/10.5281/zenodo.15351367
Process_Date: 20250515
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: GridCell
Row_Count: 59851
Column_Count: 55300
Vertical_Count: 1
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 29.5
Standard_Parallel: 45.5
Longitude_of_Central_Meridian: -96
Latitude_of_Projection_Origin: 23
False_Easting: 0
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Row and Column
Coordinate_Representation:
Abscissa_Resolution: 30
Ordinate_Resolution: 30
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.0000
Denominator_of_Flattening_Ratio: 298.25722210
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: JuniperPhases_JFSP_proj_2023-02-16.tif
Entity_Type_Definition:
Raster geospatial data file containing areas of pinyon/juniper (PJ) woodland and expansion within portions of the sagebrush biome of the western United States.
Entity_Type_Definition_Source:
USFS
Attribute:
Attribute_Label: Value
Attribute_Definition:
Unique numeric values contained in each raster cell.
Attribute_Definition_Source:
USFS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition:
Not sage or PJ
Enumerated_Domain_Value_Definition_Source:
USFS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition:
Sagebrush, no PJ
Enumerated_Domain_Value_Definition_Source:
USFS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition:
PJ Phase I
Enumerated_Domain_Value_Definition_Source:
USFS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition:
PJ Phase II
Enumerated_Domain_Value_Definition_Source:
USFS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition:
PJ Phase III
Enumerated_Domain_Value_Definition_Source:
USFS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 5
Enumerated_Domain_Value_Definition:
PJ Persistent Woodland
Enumerated_Domain_Value_Definition_Source:
USFS
Overview_Description:
Entity_and_Attribute_Overview:
Below you will find a list and description of the files included in this data publication.


VARIABLE DESCRIPTION FILE (1)

1. \Data\_variable_descriptions.csv: Comma-separated values (CSV) file containing a list and description of variables found in all data files. (A description of these variables is also provided in the metadata below.)

Columns include:

Filename = name of data file
Variable = name of variable
Description = description of variable


DATA FILES (1)

1. \Data\JuniperPhases_JFSP_proj_2023-02-16.tif: Georeferenced (GeoTIFF) raster file (and associated files) containing areas of pinyon/juniper (PJ) woodland and expansion within portions of the sagebrush biome of the western United States.

Attributes include:

Value = Unique numeric values contained in each raster cell. Category values correspond to:

0 = Not sage or PJ (pinyon/juniper)
1 = Sagebrush, no PJ
2 = PJ Phase I
3 = PJ Phase II
4 = PJ Phase III
5 = PJ Persistent Woodland


SUPPLEMENTAL FILES (1)

1. \Supplements\Juniper_Map_Barplot_2023-09-14.tif: Tagged Image File Format (TIF) file containing a formatted map of the areal extent of pinyon-juniper (PJ) expansion areas by phase of expansion, PJ persistent woodlands, and sagebrush associations with no PJ cover in the Northern Basin and Range (NBR), Snake River Plain (SRP), and Central Basin and Range (CBR). Bar graph at the upper right shows the proportion of the area of each category within each ecoregion. PJ areas are comprised of singleleaf pinyon (Pinus monophyla), western juniper (Juniperus occidentalis), and/or Utah juniper (J. osteosperma).
Entity_and_Attribute_Detail_Citation:
Chambers, Jeanne C.; Brown, Jessi L.; Reeves, Matthew C.; Strand, Eva K.; Ellsworth, Lisa M.; Tortorelli, Claire M.; Urza, Alexandra K.; Short, Karen C. 2023. Fuel treatment response groups for fire-prone sagebrush landscapes. Fire Ecology. 19: 70. https://doi.org/10.1186/s42408-023-00230-2 and https://research.fs.usda.gov/treesearch/67189
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service, Research and Development
Contact_Position: Research Data Archivist
Contact_Address:
Address_Type: mailing and physical
Address: 240 West Prospect Road
City: Fort Collins
State_or_Province: CO
Postal_Code: 80526
Country: USA
Contact_Voice_Telephone: see Contact Instructions
Contact Instructions: This contact information was current as of July 2026. For current information see Contact Us page on: https://doi.org/10.2737/RDS.
Resource_Description: RDS-2024-0007
Distribution_Liability:
Metadata documents have been reviewed for accuracy and completeness. Unless otherwise stated, all data and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. However, neither the author, the Archive, nor any part of the federal government can assure the reliability or suitability of these data for a particular purpose. The act of distribution shall not constitute any such warranty, and no responsibility is assumed for a user's application of these data or related materials.

The metadata, data, or related materials may be updated without notification. If a user believes errors are present in the metadata, data or related materials, please use the information in (1) Identification Information: Point of Contact, (2) Metadata Reference: Metadata Contact, or (3) Distribution Information: Distributor to notify the author or the Archive of the issues.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: CSV
Format_Version_Number: see Format Specification
Format_Specification:
Comma-separated values file
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.2737/RDS-2024-0007
Digital_Form:
Digital_Transfer_Information:
Format_Name: TIFF
Format_Version_Number: see Format Specification
Format_Specification:
Georeferenced (GeoTIFF) raster file (and associated files) or Tagged Image Format file (TIF)
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.2737/RDS-2024-0007
Fees: None
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Metadata_Reference_Information:
Metadata_Date: 20260721
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of Idaho, Department of Forest, Rangeland, and Fire Sciences
Contact_Person: Eva K. Strand
Contact_Address:
Address_Type: mailing and physical
Address: 875 Perimeter Drive
Address: MS 1135
City: Moscow
State_or_Province: ID
Postal_Code: 83844
Country: USA
Contact_Voice_Telephone: contact via email
Contact_Electronic_Mail_Address: evas@uidaho.edu
Contact Instructions: This contact information was current as of original publication date. For current information see Contact Us page on: https://doi.org/10.2737/RDS.
Metadata_Standard_Name: FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001.1-1999
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