USDA Forest Service, Southwestern Region, Regional GIS Coordinator
20180928
S_R03.Ecological_Response_Unit
vector digital data
(Version 5.2)Ecological Response Units (ERUs) facilitate landscape analyses and planning. The framework represents all major ecosystem types of the southwest region, and represents a stratification of biophysical themes. ERUs are used to define historic/reference conditions within a mapping unit by integrating site potential (soil physical and chemical properties, geology, geomorphology, aspect, slope, climate variables, and geographic location), fire regime (historic and contemporary), neighboring vegetation communities, and seral state sequence.The process by which this dataset was created is as follows:The input data were forest Terrestrial Ecological Unit Inventory (TEUI) survey data that were crosswalked to the ERU list, ERU version 4, corrections to ERU version 4 utilizing a climate gradient to identify anomalous attribution, a collaborative review product with the University of Arizona’s Ecologist Jim Malusa, Integrated Landscape Assessment Project (ILAP) data, Regional Riparian Mapping Project (RMAP) data, and subclass information derived from an ILAP grid analysis. The data layers listed above were assembled in a hierarchical order starting with the ERU version 4 data through a series of geoprocessing updates. Highest confidence was placed on TEUI data and RMAP data so those datasets were burned into the product last. During key review periods by resource specialists, there were metrics built to analyze percent of ERUs that lay on the border of a climate gradient or a Southwest Biotic Community (Brown and Lowe). These metrics were used to inform attribution for ERUs that needed evaluation by the resource specialist. Additional processing was performed using the Eliminate tool to reduce the amount of “noise” in the dataset brought on by fragmented polygons smaller than a parametric minimum map unit. The minimum map unit was defined as 1 hectare for grassland, shrubland, forest, woodland, and great plains system types and 1 acre for riparian types. By virtue of the Eliminate tool, polygons that did not meet the minimum map unit were merged to a neighboring polygon that shared the largest boundary. RMAP data was used as an exclusion dataset and no changes were made to that via the Eliminate processing. Multiple QA/QC reviews were performed at many stages of the building of the layer and as products were being finalized. During these reviews, updates were made to the layer as needed. The creation of the regional extent layer came via a marriage of two halves of the region. The southern product was delineated by ecoregion boundaries that formed the combined context area of analysis for the Gila and Lincoln National Forests. This was necessary due to time constraints imposed by Forest Plan Revision Assessments for those forests. The remainder of the region was assembled independently but in an identical way to the southern portion. Once complete, the two datasets were joined together via a data load to eliminate any possibility of errors brought on by additional geoprocessing. The regional product was then reviewed to identify any errors along the boundary between the two layers. The full dataset was added to the corporate SDE as a beta product and will be considered complete and in a maintenance as needed status. Additional changes to the dataset ought to be documented as process steps.This layer was developed through iterative and collaborative efforts of Forest Plan Revision assessment.
The purpose of this feature class is to be an ecosystem mapping tool across all of Arizona and New Mexico
20180928
This dataset was published to SDE
As needed
-115.183538
-102.762158
37.143226
31.144599
None
ERU
Ecological Response Units
Potential Vegetation
Southwestern Region
Forest Service
None
Comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in photointerpretation, rounding of decimal coordinates during conversion, and mapping conventions over time. Any hardcopies utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way, they are obligated to describe the types of modifications they have performed on the hardcopy map. The user specifically agrees not to misrepresent these data sets, nor to imply that changes made were approved by the USFS.
USDA Forest Service, Southwestern Region
Regional GIS Coordinator
mailing and physical
333 Broadway SE
Albuquerque
New Mexico
87102-3498
US
505-842-3292
505-842-3198
505-842-3800
mailroom_r3@fs.fed.us
0800-1630 Monday - Friday, Mountain Time.
Version 6.2 (Build 9200) ; Esri ArcGIS 10.3.1.4959
ERU Version 5 Regional Combined dataset loaded into SDE
20160108
Metadata created and loaded into feature class
20160218
-Mixed Conifer with Aspen changed to Mixed Conifer Frequent Fire for COC TEUI MUs-650, 652 and APS TEUI MUs-201,207
-Mixed Conifer Frequent Fire changed to Mixed Conifer with Aspen for COC TEUI MU-555 and APS TEUI MU-206
-PJ Woodland changed to PJ Grass for COC TEUI MUs-438,439,440,445,460,465,473
-Semi-Desert Grassland Provisional Subclass changed from Sandy Plains Grassland (SPG) to Semi-Desert Shrubland (SDSH) for COC TEUI MUs-350,381,385
20160518
-18 map features on the Santa Fe currently attributed as 'Herbaceous Wetland', based on TEUI MUs 340 and 341. Original RMAP features were mistakenly attributed as 'Herbaceous Wetland (190)' but need to be changed to Alpine (ALP). Source needs to be changed to SFE_TEUI
-Juniper Grass - Mild: 33 polygons changed to Juniper Grass - High Sun Mild on Lincoln NF
-PJ Grass - Mild: 210 polygons changed to PJ Grass - High Sun Mild on Lincoln NF
-SDGhsm on Prescott NF changed to SDGlsm for TEUI MU 45 and 410. Provisional Subclass unchanged
20160602
-LIN TEUI unit 0001F changed from MPO to PJC
-LIN TEUI unit 0003E changed from MPO to PJC
-LIN TEUI unit 0103H changed from PJO to JUGm
-LIN TEUI unit 0105H changed from CDS to SDGhsm (FHG)
-LIN TEUI unit 0150H changed from PJOm to JUGm
-LIN TEUI unit 0151H changed from PJOm to JUGm
-LIN TEUI unit 0196F changed from MPO to PJC
-LIN TEUI unit 0198F changed from MPO to PJC
-LIN TEUI unit 0253F changed from MPO to PJC
-LIN TEUI unit 0259G changed from MPO to PJC
-LIN TEUI unit 0260H changed from PJOm to JUGm
-LIN TEUI unit 0261G changed from MPO to PJC
-LIN TEUI unit 0261H changed from SDGhsm (PFG) to SDGhsm (FHG)
-LIN TEUI unit 0263H changed from SDGhsm (PFG) to SDGhsm (FHG)
-LIN TEUI unit 0266H changed from SDGhsm (PFG) to SDGhsm (FHG)
-LIN TEUI unit 0274H changed from PJOm to JUGm
-LIN TEUI unit 0278H changed from PJOm to JUGm
20160707
-LIN TEUI units 0103H, 0150H, 0151H, 0260H, 0274H, 0278H changed from JUGm to PJGhsm
20160804
Additional Riparian subclasses were added to the Herbaceous (wetland), 190, class: Upper Riparian (10, uppr) – Upper life zones within mild and cold gradients (mostly life zones 6, 7), associated with 110, 230, 240, 280, 290; Mid Riparian (11, mid) – Middle life zones within mild and cold gradients (mostly life zones 4, 5), associated with 160, 210, 300, 350*; Lower Riparian, Mild (12, lwrm) – Lower life zones within mild gradients (mostly life zones 1, 2, 3), associated with RMAP units 130, 150, 170, 180, 250, 260, 270, 360; Lower Riparian, Cold (13, lrwc) – Lower life zones within cold gradients (mostly life zones 3, 4), associated with 280, 350*, 370; Great Plains Riparian (14, grpl) – In and near National Grasslands, associated with 310, 320. * - Unit 350 can occur in either lower or mid riparian zones
Brief Methodology: Classed surrounding ERU vegetation into Life Zones and then into Riparian subclasses based on those life zones. Completed same process for Riparian vegetation other than 190. Ran the Eliminate tool on vegetative classes that were ambiguous to find most common adjacent life zone/subclass to infer subclass type. Ran the Eliminate tool iteratively to class Riparian 190 first with ERU vegetation, then with Riparian vegetation, overwriting any subclass type from ERU vegetation with Riparian vegetation. 14 unclassed polygons were manually classed based on surrounding vegetation. Finally, re-classed Riparian polygons with any existing subclasses.
20180824
Vector
Simple
FALSE
0
TRUE
FALSE
coordinate pair
0.0001
0.0001
meter
D North American 1983
GRS 1980
6378137.0
298.257222101
S_R03.Ecological_Response_Unit
Feature Class
0
OBJECTID_1
OBJECTID_1
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
OBJECTID
Double
8
0
0
FID_PJMerge
FID_PJMerge
Integer
4
0
0
R3ERU
Ecological Response Unit designation
R3 Assessment Team
R3ERU
String
100
0
0
R3ERUCODE
Alpha numeric code denoting ERU designation
R3 Assessment Team
R3ERUCODE
String
10
0
0
R3ERUSUBCL
Subclass information associated with an ERU designation
R3 Assessment Team
R3ERUSUBCL
String
100
0
0
PROV_SUBCL
Provisional Subclass information associated with an ERU designation
R3 Assessment Team
PROV_SUBCL
String
100
0
0
R3ERUSUBCO
R3ERUSUBCO
String
10
0
0
SYSTEMTYPE
System Type designation refers to ecosystem type designation (forest, woodland, grassland, shrubland, great plains, riparian, wetland, or other)
R3 Assessment Team
SYSTEMTYPE
String
25
0
0
SOURCE
Source of input dataset for a mapping unit for data tracking
R3 Assessment Team
SOURCE
String
25
0
0
TEUI_MUS
Terrestrial Ecological Unit Inventory survey map unit ID
R3 Assessment Team
TEUI_MUS
String
10
0
0
UID_
UID_
Double
8
0
0
SHAPE
Feature geometry.
Esri
Coordinates defining the features.
Shape
Geometry
0
0
0
FID_SURF
FID_SURF
Integer
4
0
0
objectid_12
objectid
Integer
4
0
0
landnum
landnum
String
40
0
0
quad
quad
SmallInteger
2
0
0
twp
twp
Double
8
0
0
rng
rng
Double
8
0
0
sec
sec
SmallInteger
2
0
0
county
county
SmallInteger
2
0
0
fund
fund
SmallInteger
2
0
0
parcel
parcel
SmallInteger
2
0
0
edit_date
edit_date
Date
8
0
0
parcel_cen
parcel_cen
SmallInteger
2
0
0
comments
comments
String
150
0
0
area_acres
area_acres
Double
8
0
0
shape_length_1
shape_length_1
Double
8
0
0
shape_area_1
shape_area_1
Double
8
0
0
Shape_Length
Shape_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Shape_Area
Shape_Area
Double
8
0
0
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
20181017
USDA Forest Service, Southwestern Region
Regional GIS Coordinator
mailing and physical
333 Broadway SE
Albuquerque
New Mexico
87102-3498
US
505-842-3292
505-842-3198
505-842-3800
mailroom_r3@fs.fed.us
0800-1630 Monday - Friday, Mountain Time.
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
Esri ArcGIS 12.3.2.15850
PJSurf
STL
Pinyon Juniper STL Intersection
PJSurf
002
Projected
GCS_North_American_1983
Linear Unit: Meter (1.000000)
North_America_Lambert_Conformal_Conic
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20190515
11284700
20190515
11284700
File Geodatabase Feature Class
dataset
0
20190515