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Estimate type
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A categorical data-quality class (Types 1-6) intended to summarize reliability and interpretability of an escapement estimate.
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Enumeration method
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The field observation approach used to collect escapement information (e.g., fixed-site counts, visual surveys, sonar detections).
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Estimation method
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The analytical procedure used to convert field observations into an annual estimate (e.g., mark-recapture, AUC, modelling, expansions).
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AUC (area under the curve)
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A method that integrates repeated counts over time to estimate total passage or spawner abundance, typically requiring assumptions about residence time and detectability.
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Method family
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A grouped survey/estimation class used to scope which property checks apply in the decision key (FS, V, A, S, T, R, P, M).
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Relative abundance
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A time-series property indicating values are comparable within the same program/method over time, but may not represent a complete census of true abundance.
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WSP (Wild Salmon Policy)
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A Canadian policy framework that includes rapid status assessments using benchmarks and decision-tree logic applied to salmon Conservation Units.
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Breach/bypass
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Fish bypassing a counting site, or a breach/failure of the counting installation, resulting in missed fish unless corrected.
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Infilling/interpolation
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A documented method used to estimate unobserved portions of a run due to missed visits or device outages.
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Calibration
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A procedure that adjusts or infers estimates using a relationship to a higher-quality series or method, potentially changing historical values.
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Downgrade flag
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A recorded code explaining why an estimate cannot attain a higher-quality type (e.g., VISITS, TIMING, DOC).
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CV (coefficient of variation)
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A standardized uncertainty metric defined as the standard deviation divided by the mean (often reported as a percentage).
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SE (standard error)
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A measure of uncertainty in an estimated quantity; commonly the standard deviation of an estimator under repeated sampling.
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