Identification Information

Title Fragmentation Main Model

Date 2010-09-30

Date Type Publication

Cited Responsible Party

Organization Name The Nature Conservancy in New Mexico

Role identify

Presentation Form raster digital data

Abstract The fragmentation model combines patch size and patch continuity with diversity of vegetation types per patch and rarity of vegetation types per patch. A patch was defined as an area of natural vegetation not bisected by roads, utilities, or rails. Patch size and continuity were calculated separately for forests, woodlands, shrublands, grasslands and riparian areas. Definitions of each system type can be found in the data atlas (http://allaboutwatersheds.org/groups/SAS/public/data-atlases).

Purpose This data layer is intended to identify the extent of fragmentation on forests, woodlands, and rangelands.

Data Set Credit The Nature Conservancy in New Mexico

Status Complete

Point of Contact

Individual Name

Organization Name EMNRD, Forestry Division

Position Name GIS Specialist

Role Point of contact

Voice 505-476-3346

Facsimile

Address

Delivery Point 1220 St. Francis Drive
City Santa Fe
Administrative Area NM
Postal Code 87505
Country

Electronic Mail Address trent.botkin@state.nm.us

Maintenance and Update Frequency As needed

Descriptive Keywords NM Statewide Natural Resources Assessment, Fragmentation

Access Constraints None

Use Constraints All data is provided "as is." Energy Minerals and Natural Resources Department, Forestry Division makes no representation or warranty as to the completeness, accuracy or utility of any specific data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with this data

Language English

Topic Category environment

Extent

Geographic Bounding Box

West Bound -109.324845
East Bound -102.936542
North Bound 37.065742
South Bound 31.320252

Temporal Extent

DateTime 2007

Data Quality Information

Attribute Accuracy Report

Report Unknown

Quantitative Attribute Accuracy Assessment

Attribute Accuracy Value
Attribute Accuracy Explanation

Logical Consistency Report Data set in raster format

Completeness Report The purpose of the model is to represent the current extent of fragmentation of forests, woodlands and rangelands (Map 8). The fragmentation model combines patch size and patch continuity with diversity of vegetation types per patch and rarity of vegetation types per patch. A patch was defined as an area of natural vegetation not bisected by roads, utilities, or rails. Patch size and continuity were calculated separately for forests, woodlands, shrublands, grasslands and riparian areas. Definitions of each system type can be found in the Volume II - Data Atlases (http://allaboutwatersheds.org/groups/SAS/public/data-atlases). The model should be considered a baseline of current habitat fragmentation conditions. Large, continuous patches with high diversity and variety were mapped for 7.3 million acres of land. These areas are the least fragmented and of the highest priority for protection. As stated above, this model focuses on current habitat fragmentation conditions. It does not address trends or connectivity measures of habitat fragmentation.

Lineage

Source Information

Source Citation

Source Scale Denominator 9999

Type of Source Media Unknown

Source Time Period of Content

DateTime Unknown
Source Currentness Reference publication date

Source Citation Abbreviation Unknown

Source Contribution Unknown

Process Step

Process Description Create a statewide fragmentation layer by combining forest continuity, forest patch size, woodland continuity, woodland patch size, shrub/scrub continuity, shrub/scrub patch size, grassland continuity, grassland patch size, riparian continuity, riparian patch size, diversity of vegetation types per patch, and rarity of vegetation types per patch in an equal weight overlay. Final priority classes and values for statewide fragmentation model are: Low = 1-4; Low/Medium = 5-6; Medium = 7-8; Medium/High = 9-11; High = 12-15 Combine forest continuity, forest patch size, woodland continuity, woodland patch size, shrub/scrub continuity, shrub/scrub patch size, grassland continuity, grassland patch size, riparian continuity, riparian patch size, diversity of vegetation types per patch, and rarity of vegetation types per patch. Patches were defined using SWReGAP landscover data. SA mask layer (forest, riparian, grassland, shrub-scrub, woodland) was derived using the crosswalk shown in data atlas at http://allaboutwatersheds.org/groups/SAS/public/DataAtlases.pdf/view and used to extract forest, riparian, grassland, shrub-scrub, woodland patches from the vegetated region group layer.

Process Date 2009

Process Time

Process Contact

Individual Name

Organization Name The Nature Conservancy in New Mexico

Position Name GIS Manager

Role Point of contact

Voice 505-988-3867

Facsimile

Address

Delivery Point 212 East Marcy St, Ste 200
City Santa Fe
Administrative Area NM
Postal Code 87501
Country

Electronic Mail Address

Process Step

Process Description Metadata imported.
Process Date 2010-03-30
Process Time 14:06:45
Process Contact

Process Step

Process Description Dataset copied.
Process Date 2010-06-15
Process Time 16:23:22
Process Contact

Fragmentation Main Model

Metadata from the RGIS Metadata Repository

Identification Information

Distribution Information

Spatial Reference Information

Data Quality Information

Metadata Reference Information