Temperature and hydrological impacts of beaver-based ...€¦ · Joe Wheaton, Utah State...
Transcript of Temperature and hydrological impacts of beaver-based ...€¦ · Joe Wheaton, Utah State...
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Temperature and hydrological impacts of beaver-based stream restoration:
hypotheses, models and data.
AFS/TWS 9/30/2019
Chris Jordan, NOAA-FisheriesCarol Volk, South Fork Research Inc.Joe Wheaton, Utah State University
Nick Bouwes, Nick Weber, Eco Logical Research Inc.
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Bridge Creek WatershedOregon, USA • 710 km2
John Day Basin
John Day Basin
Bridge Creek
BRIDGE CREEK INTENSIVELYMONITORED WATERSHED
Mitchell, OR
Mid-Columbia Steelhead
Slide from Nick Weber
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Beaver inspired stream restoration: Bridge Ck.
Slide from Nick Weber
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103
Phase 4
Dynamic EquilibriumPhase 3
Aggrading
Phase 1
IncisingPhase 2
Widening
100
101
102
Figure Adapted fromCluer and Thorne,2014 by Weber
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DAM PERSISTENCE1988 - 2005
Demmer and Beschta, 2008
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Mean Annual Flood Height 30 - 50
cm
BDAs - Beaver Dam Analogs
DisconnectedTerrace
Incision Trench
Slide from Nick Weber
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Oregon, USA
John Day Basin
Bridge Creek
MurderersCreek
John Day Basin
Bridge Creek Watershed
Murderers Creek - Watershed Control
Spatial DesignTreatment Reaches - 4Control Reaches - 8Tributary Control - 2Watershed Control - 3
Mitchell, OR
Temporal Design2005
Pre-RestorationMonitoring
2009
RestorationImplementation
Adapted from Figure 2 of Bouwes et al. (2016)DOI: 10.1038/srep28581
Post-RestorationMonitoring
14 201506 07 08 10 11 12 13
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Structure ID:
MC-08.2
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WATER TABLE ELEVATION CHANGE
1’-3’ increase in the height of the water table
2006 2013
Slide from Nick Weber
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FLOODPLAIN FREQUENTLY INUNDATED
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Summer 2005
Summer 2014
Weber et al. (2017) DOI: 10.1371/journal.pone.0176313
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cou oe W
of:
(Before) (After)
Figure from Carol Volk (South Fork Research)
EXPANSION OF RIPARIAN ZONE
• Repeat high resolution (10 cm) imagery before& after 2009 treatment
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BRIDGE CREEK NDVI ANALYSIS
~20% increase productivity
natural storage resiliency
Silverman et al. 2018 map.sagegrouseinitiative.com
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Water Surface Extent
Volk et al. in review
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Ground Water Monitoring
Volk et al. in review
Untreated site
Treated site
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Groundwater Elevation
Volk et al. in review
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Volk et al. in review
Groundwater Elevation
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Groundwater and Surface water Temperature
Volk et al. in review
Untreated site Treated site
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CHANNEL TEMPERATURE HETEROGENEITY
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Stream Temperature Monitoring
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Surface Water Temperature
Weber et al., 2017 Before After
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Take Home Message
• Beaver dams (natural, BDA) result in floodplain connectivity
• Floodplain connectivity results in riparian vegetation changes
• Floodplain connectivity results in groundwater – surface water interaction
• Groundwater – surface water interaction results in changes in water temperature in both surface and subsurface realm
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LONG TEMPERATURE PROFILE
August 2014