Name: Fish Habitat - Lake Tahoe

Display Field: Substrate2015

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Surface and submerged littoral substrates in Lake Tahoe, CA, NV were mapped from high-resolution satellite imagery using Object-Based Image Analysis (OBIA) analysis techniques. The derived substrate classes were translated into three fish habitats classes (spawning, feed and cover, marginal) in order to evaluate the attainment status with environmental standards related to nearshore fish habitat and to improve map products used for land-use planning and regulatory purposes. The results confirm previous satellite mapping efforts that feed and cover habitats and spawning grounds are limited in distribution to distinct areas around the lake. Our results support the use of high-resolution satellite data for discriminating substrate variation at a resolution sufficient to inform regional planning. Management and land-use actions may consider additional focus on these areas to maintain Lake Tahoe littoral fish habitat characteristics.

Service Item Id: 8a0325246ab44159adbaf6e070f5becb

Copyright Text: Jarlath O’Neil-Dunne, Shane Romsos and David Saah Spatial informatics Group, LLC July, 2016 F:\GIS\GIS_DATA\FishHabitat\2016Update\FishHabitat

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YMin: 4712258.271396061
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Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: Habitat2015
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
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UniqueValueInfos:
• Value: 1
  Label: Marginal
  Description: N/A
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  Color: [205, 205, 102, 255]
  Outline:
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• Value: 2
  Label: Feed-Cover
  Description: N/A
  Symbol:
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  Color: [0, 168, 132, 255]
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• Value: 3
  Label: Spawning
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Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Substrate2015 ( type: esriFieldTypeSmallInteger, alias: Substrate Class 2015 , Coded Values: [1: Sand] , [2: Cobble] , [3: Boulder] , ...6 more... )
• ID_Substrate2015 ( type: esriFieldTypeInteger, alias: ID )
• Water2010 ( type: esriFieldTypeSmallInteger, alias: Water in 2010 )
• Habitat2015 ( type: esriFieldTypeSmallInteger, alias: Habitat 2015 , Coded Values: [1: Marginal] , [2: Feed-Cover] , [3: Spawning] )
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• last_edited_date ( type: esriFieldTypeDate, alias: last_edited_date, length: 8 )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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