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Map Name: EcoRegionsDrainUnits
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Description: This data was created as part of the Missouri Aquatic Gap Project. Ecological Drainage Units (EDUs) are largely zoogeographic substrata of Subregions. EDUs were empirically derived and represent fairly large watersheds or subdrainages (approx 2,500-10,000 mi²) containing aquatic assemblages that are relatively distinct within the context of the surrounding Subregion. Our EDUs are quite similar to the faunal divisions of Pflieger's Aquatic Community Classification for Missouri (Pflieger 1989). We decided not to simply adopt these faunal divisions for two important reasons. First, Pflieger utilized 1,608 community fish samples to generate the constancy/fidelity indices he used to delineate his faunal divisions. We had at our disposal those same 1,608 samples plus nearly 1,000 additional samples. Second, we had assembled 1,000's of collection records for 3 other taxa (crayfish, mussels, and snails) that we believed should be included in any effort to delineate zoogeographic subunits of our three Aquatic Subregions.
Service Item Id: e3a655273c564eab844eb87b2deb0397
Copyright Text: Missouri Resource Assessment Partnership, Missouri Department of Natural Resources
Spatial Reference:
3395
(3395)
LatestVCSWkid(0)
Single Fused Map Cache: false
Initial Extent:
XMin: -1.0434368792830653E7
YMin: 4476153.874214118
XMax: -1.0097533244973235E7
YMax: 4807364.466950145
Spatial Reference: 3395
(3395)
LatestVCSWkid(0)
Full Extent:
XMin: -1.0736717231923519E7
YMin: 4081267.704906749
XMax: -9870210.774204481
YMax: 5093532.278783271
Spatial Reference: 3395
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LatestVCSWkid(0)
Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: Ecological Drainage Units (EDU)
Author:
Comments: This data was created as part of the Missouri Aquatic Gap Project. Ecological Drainage Units (EDUs) are largely zoogeographic substrata of Subregions. EDUs were empirically derived and represent fairly large watersheds or subdrainages (approx 2,500-10,000 mi²) containing aquatic assemblages that are relatively distinct within the context of the surrounding Subregion. Our EDUs are quite similar to the faunal divisions of Pflieger's Aquatic Community Classification for Missouri (Pflieger 1989). We decided not to simply adopt these faunal divisions for two important reasons. First, Pflieger utilized 1,608 community fish samples to generate the constancy/fidelity indices he used to delineate his faunal divisions. We had at our disposal those same 1,608 samples plus nearly 1,000 additional samples. Second, we had assembled 1,000's of collection records for 3 other taxa (crayfish, mussels, and snails) that we believed should be included in any effort to delineate zoogeographic subunits of our three Aquatic Subregions.
Subject: This is a viewing service for Ecological Drainage Units
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Keywords: MoRAP
AntialiasingMode: Fast
TextAntialiasingMode: Force
Supports Dynamic Layers: true
MaxRecordCount: 2000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, geoJSON, PBF
Supports Query Data Elements: true
Min Scale: 100000
Max Scale: 0
Supports Datum Transformation: true
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