the use of the california rapid assessment method (cram ......the use of the california rapid...
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The Use of the California Rapid Assessment Method
(CRAM) In Riparian Assessments
and SWAMP
Josh CollinsSan Francisco Estuary Institute
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California Coastal Wetlands Monitoring Consortium
US EPA ORD, OWOW, Region 9CA Resources Agency, Coastal Commission,
Southern California Coastal Water Research Project
San Francisco Estuary Institute
3 Regional Teams
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What is CRAM?
Level 1: Habitat Inventories and Landscape Profiles
Level 2: Rapid Assessment of Habitat Condition (CRAM)
Level 3: Intensive Quantitative Assessment
Part of a 3-Level Framework for Comprehensive Wetlands Assessment
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Level 1: Inventory
3-Level Approach
Where are the wetlands & riparian habitats?
• New NWI plus project maps as sample frame for ambient assessment.
• Web-based tools for tracking projects as habitat. www.wetlandtracker.org
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Level 1 Inventory: Wetland Tracker
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Level 3: Intensive Monitoring and Special Studies
3-Level Approach
• Develop predictive models of relations among states, functions, and stressors.
• Calibrate and validate Level 1 & 2 tools.
• Develop standard protocols for intensive monitoring.
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3-Level Approach
Focus on Level 2:California Rapid Assessment Method
CRAM
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• Expert “walk and talk” diagnostic tool• A set of questions with mutually exclusive
multiple choice answers• Less than 2 hours of field time per
assessment for 2-3 person team• Required expertise comparable to
jurisdictional delineation• Applies to all wetlands (riverine-riparian,
depressional, slope, lacustrine, estuarine, marine, vernal pool, playa)
What is CRAM?
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Basic CRAM Assumptions
• Basic wetland condition can be assessed based on field indicators of form and structure.
• Anthropogenic stressors contribute to wetland condition.
• Stressors can be managed to achieve conservation goals.
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CRAM Conceptual Framework: Condition and Stressors
Wetland Condition
Buffer Hydrology Abiotic Structure
Biotic Structure
Stressors
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CRAM Conceptual Framework: Condition Attributes and Metrics
Wetland Condition
Buffer Hydrology Abiotic Structure
Biotic Structure
% of AA with Buffer
Buffer Condition
Ave Buffer Width
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CRAM Conceptual Framework: Condition Attributes and Metrics
Wetland Condition
Buffer Abiotic Structure
Biotic Structure
Water Source
Upland Connection
Hydroperiod
Hydrology
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CRAM Conceptual Framework: Condition Attributes and Metrics
Wetland Condition
Buffer Hydrology Biotic Structure
Abiotic Patch Richness
Sediment Integrity
Topographic Complexity
Abiotic Structure
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CRAM Conceptual Framework: Condition Attributes and Metrics
Wetland Condition
Buffer HydrologyAbiotic
StructureBiotic
StructureBiotic Patch Richness
Interspersion & Zonation
Vertical Structure
Plant Comm. Integrity
Organic Matter Accum.
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CRAM Results:Attribute & Site Scores
Site Score
BufferScore
HydrologyScore
Abiotic Structure
Score
Biotic Structure
Score
Percent of best
attainable
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Stressor Checklist
• Matched to CRAM attributes.• Suggests what might be managed
to improve condition on case-by-case basis.
• Very sensitive to site-specific knowledge.
• Can be over-used (should yield hypotheses and not conclusions).
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CRAM Beta Test Partners• Ambient monitoring
(USNPS Point Reyes)
• Compliance monitoring(State Board)
• Restoration performance assessment(SCWRP)
• Cumulative impact & stressor analysis(SF Bay Area IRWMP)
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TALU, BMP Effectiveness, TriageCo
ndit
ion
(CRA
M S
core
)
Stress(es) or Costs to Repair
High Class
Middle Class
Low Class
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CRAM Status• Calibrated statewide for Estuarine
and Riverine-Riparian Wetlands in 05.– Monitoring Avian Productivity and
Survivorship (MAPS data)
– California Stream BioassessmentProcedure (CMAP Benthos data)
– WEMAP estuarine vegetation data
• Part of SWAMP draft strategy to address USEPA “wetlands elements letter.”
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CRAM Status• Coast-wide estuarine survey in 07.
• Watershed-Level ambient pilots for riverine-riparian habitats in 06.
– Moro Bay Watershed– Humboldt Bay Watershed– Napa Watershed– San Gabriel Watershed
– Linked to CMAP in 06?
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The Riverine-RiparianWetland Class
The “CRAM riparian zone” has a direct, measurable effect on the quality and/or quantity of surface flow.
Measured in the field from the upland edge of the active floodplain to the lateral extent of likely sources of allochthanous carbon inputs -could the tree fall into the stream?
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The Riverine-RiparianWetland Class
Includes the channel beds of ephemeral streams during times of no significant flow (the riverine part of the wetland class); the floodplain is considered part of the channel.
Might be restricted to wadable streams.
Further classification is being considered, based on stream slope, channel order, reach type (source, transport, storage, Rosgenclassification, etc).
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.92 .83
.75.91
.68.61
.74
.55
.42
.71
Watershed ProfilesSlope Wetland
1st Order
2nd Order
.55
.80
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Thank You