gis-based river habitat mapping in the obed wild and scenic river paul ayers, university of...
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GIS-based River Habitat Mapping in the Obed Wild and Scenic River
Paul Ayers, University of Tennessee
• Use kayak-mounted underwater videomapping system
• Develop river habitat maps at OBRI from:– Barnett Bridge to Nemo (Clear
Creek/Obed/Emory)
• Other underwater videomapping projects with NPS
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GPS-Instrumented KayakAcquires Georeferenced above and below water video and depth sonar
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Geo-referenced Image Recording
Media-Mapper Audio output
(GPS output)
Audio Input (GPS input)
Rear
Fro
nt
GPS
Video input
Splash Cam
DVD Recorder
GPS NMEA Data (ASCII)
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Georeferenced Underwater Image
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Using underwaterlasers to determinedepth and scale(dot spacing is 7.75 inches) 1.5 to 2.5 ft
< 1.5 ft
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Kayaking Clear Creek
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RiffleRiffle
RunRun
PoolPool
River CharacteristicsRiver Characteristics
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Full Extent: River CharacteristicsClear Creek (Lily to Canoe Hole)
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Substrate Classification
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Full Extent: Substrate Determinations
Clear Creek (Lily to Canoe Hole)
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Endangered Species Habitat Maps
• Spotfin Chub
• Dusktail Darter
• Cumberland Elktoe
• Cumberland Bean
• Cumberlandian Combshell
• Tan Riffleshell
• Littlewing Pearlymussel
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Ideal Habitat: Spotfin Chub (Erimonax Monachus)
•River Characteristic: Run
•Depth: <1.5 ft
•Substrate: Bedrock/fines & Boulder
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Other Projects:
BISO River Habitat Mapping(Canoe and Kayak)
Endangered Mussel Habitat
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Canoeing with Drop-down Camera
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Cumberland BeanPool, Run, Riffle Habitat Range of Cumberland Bean
Pool Riffle Run
Suitability poor optimal suboptimal
River Depth
Optimal 0.6m (2 ft)
Suboptimal 0.3m (1 ft)
Marginal 0.9m (3 ft)
Substrate Classification
Substrate Classification
Suitability
Clay/Silt Dominance of silt and clay filling the void around any larger substrate
unsuitable
Sand with < 20% cobble optimal
Sand with 20% – 80% cobble suboptimal
Sand with > 80% cobble marginal
Gravel with < 20% cobble marginal
Gravel with 20% – 80% cobble poor
Gravel with > 80% cobble poor
Boulders or Bedrock
unsuitable
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Optimal Habitat
Map
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T&E Species Habitat Mapping
• Duskytail Darter (endangered)
• Smoky Madtom (endangered)
• Yellowfin Madtom (threatened)
• Spotfin Chub (threatened)
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Biscayne NP (BISC)Motorized Reel Underwater Video
Coral Reef Mapping and Monitoring
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GPS
Receiver
ConsoleDepth Sensor
Boat and Equipment
Underwater Cameraand Sensors
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Benthic Habitats
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Sturgeon Habitat Mapping - TN
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That’s Enough
• Thanks!• Questions?• Lunch?• Projects?