Fish Status & Trends in the Siskiyou Region · 2019-01-09 · Fish in the Siskiyou Region Chinook...
Transcript of Fish Status & Trends in the Siskiyou Region · 2019-01-09 · Fish in the Siskiyou Region Chinook...
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Fish Status & Trends in the Siskiyou Region
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Fish in the Siskiyou Region
Chinook Salmon- Spring & Fall Run
Coho Salmon
Steelhead- Summer and Winter Run
Coastal Cutthroat Trout
Redband Trout (Jenny Creek)
Other Native Species- Green Sturgeon, White Sturgeon, Speckled Dace, Sculpin,Smallscale Sucker, Pacific Lamprey
Photo by P. Samarin, ODFW
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Landscape and HabitatLimiting FactorsStatus & TrendsThermal ComplexityLooking Forward
Siskiyou Region Fish Populations
Photo by P. SamarinPhoto by R. Battleson, ODFW
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Siskiyou Region – Landscape & Habitat
- Multiple Ecoregions- Ecological Ties- Less Precipitation- Higher Temperatures- Steeper Stream Gradients- Erosive Geology- Human Footprint
Siskiyou Region outlined in redAGENDA ITEM A
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Landscape and HabitatLimiting FactorsStatus & TrendsThermal ComplexityLooking Forward
Siskiyou Region Fish Populations
Photo by River Design Group
- Temperature- Flow- Habitat (Complexity & Connectivity)- Non-native Species- Harvest- Hatcheries- Ocean Conditions (*)
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Habitat Use/DistributionLimiting FactorsStatus & TrendsThermal ComplexityLooking Forward
Siskiyou Region Fish Populations
Artwork by Jill Pelto
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Spring Chinook Fall Chinook Coho Salmon
Summer Steelhead Winter Steelhead Cutthroat & Redband
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Spring RunRogue Spring Chinook Conservation Plan (2007)
- Habitat Protection & Restoration b/l William Jess Dam- Reservoir Management Coordination - Habitat Enhancement in Big Butte Creek- Predation- Manage Fishery Impacts- Manage Hatchery Impacts
Fall RunRogue Fall Chinook Conservation Plan (2013)
- Habitat Restoration, Maintenance & Enhancement- Reservoir Management Coordination- Non-Native Species- Predation - Manage Fishery Impacts
Chinook Salmon
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Desired Status
Conservation Criterion
Abundance
Spawner Distribution
CompositionDesired Status
Cons. Criterion
William Jess DamCompleted
Conservation PlanImplemented
Rogue Spring Chinook
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Desired Status
Cons. Criterion
Conservation Plan Adopted
Rogue Fall Chinook – Rogue Aggregate Populations
Desired Status
Conservation Criterion
Abundance
Age Structure
Timing
Composition
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Southern Oregon/Northern California CoastFederally Listed – ThreatenedSONCC Coho Federal Recovery Plan (2014)- Near extirpation (late 1960s/early 1970s)- Gradient/temperatures limit distribution- Riparian/Habitat restoration- Enhancing cold water
Coho Salmon
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Coho Salmon
Juvenile Occupancy Adult Abundance
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Summer and Winter RunsNative Fish Status Report (2005)Rogue-South Coast Multispecies Plan (in progress)
- Migrate among small and large tributaries and the mainstem Rogue
- Capable of using seasonally-available water- Temperature & Passage- Conservative harvest regulations
Half Pounders- Only in Oregon and some N. California streams- Most Rogue summer steelhead; many Rogue winter
steelhead- Size of Rogue Steelhead - Popular fishery in lower and middle Rogue
Steelhead
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Steelhead Juveniles and Half-Pounders
Juvenile Occupancy
½ Pounder Abundance
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Steelhead Adults
Summer SteelheadWinter Steelhead
*Only upper Rogue; ~25% of habitatAGENDA ITEM A
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S. Oregon Species Management UnitNative Fish Status Report (2005)Rogue-South Coast Multispecies Plan (in progress)
- Anadromous and Fluvial Life Histories- Diverse Habitat Use and Movement- Broadly Distributed
Coastal Cutthroat Trout
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Upper Klamath Species Management UnitNative Fish Status Report (2005)Jenny Creek Population- Isolated above barrier falls
- Jenny Creek Smallscale Sucker
Photo by T. Smith, USFS
Redband Trout
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Habitat Use/DistributionLimiting FactorsStatus & TrendsThermal ComplexityLooking Forward
Siskiyou Region Fish Populations
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Thermal Complexity
Thermal Complexity- Magnitude- Range- Frequency- Duration- Time and Space- Rate of Change
Fish Life History Attributes
Fish Use of the Stream Network
Complexity
Diversity
Stability & Resilience
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Thermal Complexity
Adult Chinook Salmon seeking thermal refuge at a tributary mouth (Stair Creek)
Photo by R. Janssen Photo by R. Janssen
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Habitat Use/DistributionLimiting FactorsStatus & TrendsThermal ComplexityLooking Forward
Siskiyou Region Fish Populations
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Current Baseline
2080Projection
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Questions?
Siskiyou Region Fish Populations
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