Name: Physiographic Diversity
Display Field: Value
Type: Raster Layer
Geometry Type: null
Description: Physiographic diversity, or geodiversity, is a measure of abiotic diversity. It refers to the physical features that provide the environmental setting or "stage" for biological activity. Areas with greater diversity in physical features usually correlate with higher levels of biodiversity. The greater number of ecological niches present in a physiographically diverse landscape often support the presence of rare species and high levels of endemism. As a result, geodiversity may be used in some contexts as a proxy for biodiversity and/or endemism when other data are unavailable and/or to augment existing information on species and their habitats. Geodiversity is also recognized as a crucial element of climate refugia.
To develop this dataset, Theobald et al. generated novel spatial databases for 15 landform and 269 physiographic types across the conterminous United States of America. They examined their potential use by natural resource managers by placing them within a contemporary climate change adaptation framework, and found the physiographic databases could play key roles in four of seven general adaptation strategies. They also calculated correlations with common empirical measures of biodiversity to examine the degree to which the physiographic setting explains various aspects of current biodiversity patterns. Additionally, they evaluated the relationship between landform diversity and measures of climate change to explore how changes may unfold across a geophysical template. ( Theobald et al 2015 - https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0143619 ).
Map and Data Disclaimer: The USDA Forest Service makes no warranty, expressed or implied, including the warranties of Merchant ability and fitness for a particular purpose, and assumes no legal liability or responsibility for the accuracy, reliability, completeness, or utility of these geospatial data, or for the improper or incorrect use of these geospatial data. These geospatial data and related maps or graphics are not legal documents and are not intended to be used as such. The data and maps may not be used to determine title, ownership, legal descriptions or boundaries, legal jurisdiction, or restrictions that may be in place on either public or private land. Natural hazards may or may not be depicted on the data and maps, and land users should exercise due caution. The data are dynamic and may change over time. The user is responsible to verify the limitations of the geospatial data and to use the data accordingly.
Copyright Text: Theobald et al. 2015
Default Visibility: false
MaxRecordCount: 0
Supported Query Formats: JSON, geoJSON, PBF
Min Scale: 0
Max Scale: 0
Supports Advanced Queries: false
Supports Statistics: false
Has Labels: false
Can Modify Layer: false
Can Scale Symbols: false
Use Standardized Queries: true
Supports Datum Transformation: true
Extent:
XMin: -2910093.9975366266
YMin: 165511.22718886286
XMax: 2938273.1148716114
YMax: 3254876.007860913
Spatial Reference: 102965
(6350)
Drawing Info:
Advanced Query Capabilities:
Supports Statistics: false
Supports OrderBy: false
Supports Distinct: false
Supports Pagination: false
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: false
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
HasZ: false
HasM: false
Has Attachments: false
HTML Popup Type: esriServerHTMLPopupTypeNone
Type ID Field: null
Fields:
-
OBJECTID
(
type: esriFieldTypeOID, alias: OBJECTID
)
-
Value
(
type: esriFieldTypeInteger, alias: Value
)
-
Count
(
type: esriFieldTypeDouble, alias: Count
)
Supported Operations:
Query
Query Attachments
Query Analytic
Generate Renderer
Return Updates
Iteminfo
Thumbnail
Metadata