OSPAR Common Procedure Eutrophication Assessment Tool

OSPAR Common Procedure for the Identification of the Eutrophication Status of the OSPAR Maritime Area

• The Screening Procedure
• The Comprehensive Procedure

https://www.ospar.org/work-areas/hasec/eutrophication/common-procedure

Assessment units are defined by OSPAR contracting parties. An assessment unit can have multiple indicators. Each indicator can have different temporal (months) and spatial (depths) coverage and reference values within the different assessment units.

Indicator results can be calculated either from raw data reported to ICES or indicator results can be reported directly.

Assessment Units

Indicators

• Dissolved Inorganic Nitrogen (DIN)
• Dissolved Inorganic Phosphorus (DIP)
• Chlorophyll a (CPHL)
• Oxygen Deficiency (DOXY)
• Total Nitrogen (TN)
• Total Phosphorus (TP)
• Secchi Depth (SECC)
• Dissolved Inorganic Nitrogen:Dissolved Inorganic Phosphorus (DIN:DIP)
• Total Nitrogen:Total Phosphorus (TN:TP)

Abbreviations

• ES = Eutrophication Status
• SD = Standard Deviation
• N = Number of observations
• NM = Number of unique Months
• NMP = Number of potential Months
• SE = Standards Error
• CI = Confidense Interval
• ET = Eutrophication Target / Threshold
• ACDEV = Acceptable Deviation
• BEST = Reference Condition
• EQR = Ecological Quality Ratio
• EQR_HG = Ecological Quality Ratio High/Good boundary
• EQR_GM = Ecological Quality Ratio Good/Moderate boundary
• EQR_MP = Ecological Quality Ratio Moderate/Poor boundary
• EQR_PB = Ecological Quality Ratio Poor/Bad boundary
• EQRS = Ecological Quality Ratio Scaled
• GTC = General Temporal Confidence
• GTC_HM = General Temporal Confidence High/Moderate boundary
• GTC_ML = General Temporal Confidence Moderate/Low boundary
• STC = Specific Temporal Confidence
• STC_HM = Specific Temporal Confidence High/Moderate boundary
• STC_ML = Specific Temporal Confidence Moderate/Low boundary
• TC = Temporal Confidence
• GSC = General Spatial Confidence
• GSC_HM = General Spatial Confidence High/Moderate boundary
• GSC_ML = General Spatial Confidence Moderate/Low boundary
• SSC = Specific Spatial Confidence
• SSC_HM = Specific Spatial Confidence High/Moderate boundary
• SSC_ML = Specific Spatial Confidence Moderate/Low boundary
• SC = Spatial Confidence
• C = Confidence
• NPA = None Problem Area
• PA = Problem Area
• AC = Accuracy Confidence
• ACC = Accuracy Confidence Class
• IW = Indicator Weight