Parent Layer: Mobile Bay SAV & Oyster Reefs

Name: SAV (Fall 2015)

Display Field: habit

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This data set consists of digital vector data describing the location and species composition of submerged aquatic vegetation (SAV) in coastal Alabama during fall 2015, including Mississippi Sound, Mobile Bay, Mobile-Tensaw Delta, Little Lagoon, Bay La Launch, Perdido Bay, and their communicating tributaries. The data set includes 1,068 orthophotograph frames and a MrSID mosaic produced from digital aerial imagery acquired on October 10 through 15. Submerged aquatic vegetation was concentrated in upper Mobile Bay, the Mobile-Tensaw Delta, Mississippi Sound, and the Perdido Key area in southeast Baldwin County. Most of the 2015 SAV acreage occurred in the lower Mobile-Tensaw Delta, particularly in the Bridgehead Quadrangle, which contained 63% (4,984.8 ac) of the total 7,923.1 acres mapped. Other areas of substantial acreage included the Mobile Quadrangle (929.2 ac) in the Delta and the Grand Bay Quadrangle (413.5 ac) in Mississippi Sound. 60 percent of the total SAV acreage (4,792.0 acres) was mapped as continuous (&gt;50%) coverage. Overall, there were 1,201.2 fewer acres mapped in fall 2015 than in the 2015 summer survey. The decrease was mostly due to a 920.2-ac decrease in the Bridgehead Quadrangle and a 203.1-ac decrease in the Daphne Quadrangle. In addition to a fall decrease in the overall extent of SAV, there were changes in the proportion of patchy SAV in fall (40%) compared to the summer (22%), particularly in upper Mobile Bay and the lower Delta. Of the 28 habitat categories, most were comprised of mixtures of species occurring in oligohaline systems of the study area. <a href='xml/SAV_Fall2015.xml' target='_blank'><b>Metadata</b><a></br> A full report can be found <a href='docs/SAV_2015.pdf' target='_blank'><b>here.</b><a></br>

Copyright Text:

Default Visibility: false

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -9840153.9972
YMin: 3533167.1684999987
XMax: -9734891.2451
YMax: 3610159.536700003
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [255, 0, 197, 255]
Outline:
Style: esriSLSSolid
Color: [110, 110, 110, 255]
Width: 0
Label:
Description:
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• habit ( type: esriFieldTypeString, alias: Habitat, length: 15 )
• Species ( type: esriFieldTypeString, alias: Species, length: 100 )
• Acres ( type: esriFieldTypeDouble, alias: Acres )
• Category ( type: esriFieldTypeString, alias: Category, length: 50 )

Supported Operations:   Query   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata