Puget Sound EPA Benthos Grant: Comparison of Sampling Methods and Updated Taxa Attributes King County Water and Land Resources Science Seminar November 1, 2012 Jo Wilhelm & Deb Lester, King County Leska Fore, Statistical Design Karen Adams, WA Department of Ecology Gretchen Hayslip, EPA Region 10
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Puget Sound EPA Benthos Grant: Comparison of Sampling Methods and Updated Taxa Attributes
Jo Wilhelm & Deb Lester, King County Leska Fore, Statistical Design Karen Adams, WA Department of Ecology Gretchen Hayslip, EPA Region 10. Puget Sound EPA Benthos Grant: Comparison of Sampling Methods and Updated Taxa Attributes. - PowerPoint PPT Presentation
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Puget Sound EPA Benthos Grant: Comparison of Sampling Methods and Updated Taxa Attributes
King County Water and Land Resources Science Seminar November 1, 2012
Jo Wilhelm & Deb Lester, King County Leska Fore, Statistical Design
Karen Adams, WA Department of EcologyGretchen Hayslip, EPA Region 10
Overview Regional monitoring issues that
initiated this projectKey Project GoalsMethods and Preliminary Results • Reconcile differences in sampling methods• Update taxa attributesNext steps
EPA Scientific Studies and Technical Investigation Assistance ProgramSupport technical studies to guide and evaluate implementation of PSP’s Action Agenda
Goal: Improved decision making to restore and protect streams
Reconcile Differences in Sampling Methods
Ecology requires >=8ft2 samples for inclusion in State WQ Assessment Reluctance to shift to 8ft2 - concern for orphaned data Need for better understanding of data comparability or tool to allow data comparability
* All mean residuals are significantly different than 0 (p<0.05)
-5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 >90
100
200
300
400Clingers
Residuals (2012 minus 1998)
Freq
uenc
y
-5 -3 -1 1 3 5 7 9 11 130
50100150200250
Long-Lived
Residuals (2012 minus 1998)
Freq
uenc
y
Taxa Attribute ConclusionsSignificant changes to attribute lists,
especially predator, long lived and tolerant/intolerant taxaMany rare taxa dropped from tolerant and
intolerant lists No change to structure of B-IBI – all
metrics highly correlated with % urbanizationTaxa attribute updates may require some
recalibration
Next StepsFinalize attributesRecalibrate BIBI and adjust scoringReanalyze 3 vs. 8 with updated attributesIncorporate changes into PSSBBiological Condition Gradient
process/Indicator refinementOngoing collaboration
AcknowledgementsFederal City Academic
EPA Bellevue University of WashingtonNOAA BellinghamUSFWS Bothell Non-profitUSGS Everett Pierce Stream Team
Issaquah Statistical DesignState Kirkland Lake Forest Park Streamkeepers
WA Ecology RedmondSeattle Tribe
County Tukwila Port Gamble Skallam TribeClallam Snoqualmie NationKing Private Stillaguamish TribeKitsap Aquatic Biology Associates Upper Skagit Indian TribePierce Aquatic EntomologySnohomish Rhithron Associates, Inc.Thurston