Round UUID: 4c8b66ea-5085-43db-aad6-6fc4bf4b49a3
Prompt:
Classify each reef as "Healthy" or "Stressed" using ONLY the following explicit, threshold-based rules. Apply rules STRICTLY IN ORDER; do not interpret, interpolate, or use features not explicitly listed. Once a rule matches, assign immediately and do not check lower rules.
A. Assign "Stressed" if ANY of these are true (check in order):
0. STRONG PROTECTION (apply before any Stressed checks): If ALL of these are true—ReefIntegrityScore is at least "Good", PollutionLevel is "Low" or "Moderate", PreviousStressIncidents is "None" or "Minor", BiodiversityIndex is "High" or "Very High", PredatorActivityLevel is "Moderate" or lower—then do NOT assign "Stressed" for any single negative, or combination of DistantStressIndicators "Confirmed"/worse, AlgalCoverage "Heavy"/"Extensive", BleachingEventsPerYear (any frequency), or PollutionLevel "Critical", unless at least TWO additional negatives of at least moderate severity (from: AlgalCoverage, ReefIntegrityScore, PollutionLevel, BiodiversityIndex, DistantStressIndicators, BleachingEventsPerYear, PredatorActivityLevel, CurrentFlowQuality) are present, and at least one is a direct impact indicator (ReefIntegrityScore below "Moderate", BiodiversityIndex below "High", or CurrentFlowQuality "Poor").
1. ReefIntegrityScore is "Very Poor".
2. PollutionLevel is "Critical" AND at least ONE of:
- PreviousStressIncidents above "Minor"
- DistantStressIndicators is "Confirmed" or worse
- PredatorActivityLevel is "High", "Severe", or "Extreme"
- BiodiversityIndex is "Medium" or lower
- BleachingEventsPerYear is "Frequent" or "Constant"
3. BleachingEventsPerYear is "Constant" or "Frequent", but only assign "Stressed" if at least TWO other signals are at least moderate: (AlgalCoverage is "Heavy"/"Extensive"; ReefIntegrityScore is "Poor" or worse; PollutionLevel is "High" or worse; PreviousStressIncidents above "Minor"; BiodiversityIndex is "Medium" or lower), with at least one of these two not being DistantStressIndicators or BleachingEventsPerYear. (Exception: If only one moderate negative, and all of ReefIntegrityScore, BiodiversityIndex, PollutionLevel, PreviousStressIncidents are at best or next-best, assign "Healthy".)
4. BleachingEventsPerYear is "Constant" or "Frequent" AND DistantStressIndicators is "Confirmed" or worse, AND at least TWO of (PollutionLevel is "High" or worse; ReefIntegrityScore below "Good"; PreviousStressIncidents is not "None"; PredatorActivityLevel is "High" or worse; BiodiversityIndex is "Medium" or lower), with at least one from (PollutionLevel "Critical", PreviousStressIncidents above "Minor", BiodiversityIndex "Medium" or lower). Unless at least two stress signals from A5 occur.
5. At least TWO of these SEVERE stress signals: PreviousStressIncidents above "Minor"; DistantStressIndicators is "Confirmed" or worse; PredatorActivityLevel is "High", "Severe", or "Extreme"; PollutionLevel is "High" or "Critical"; BiodiversityIndex is "Medium" or lower; CurrentFlowQuality is "Poor" AND at least one other item in this list.
6. ObservationDuration > 100 AND BleachingEventsPerYear is "Constant" or "Frequent" AND at least one other stress signal from list in A5.
7. If ObservationDuration > 120 AND at least THREE of (PreviousStressIncidents above "Minor", DistantStressIndicators is "Confirmed" or worse, PredatorActivityLevel is "High", "Severe" or "Extreme", PollutionLevel is "High" or worse, BiodiversityIndex is "Medium" or lower, AlgalCoverage is "Heavy" or "Extensive", ReefIntegrityScore is "Poor" or worse, CurrentFlowQuality is "Poor") AND BleachingEventsPerYear is above "Rare", assign "Stressed" (chronic stress exception).
8. (Aggregated Moderate Stress Trigger) If at least THREE of these are present, with at least one severe or one being CurrentFlowQuality "Poor": PreviousStressIncidents above "Minor", PredatorActivityLevel is "High" or worse, PollutionLevel is "High" or worse, BiodiversityIndex is "Medium" or lower, AlgalCoverage is "Heavy" or "Extensive", ReefIntegrityScore is "Poor" or lower, DistantStressIndicators is "Possible" or worse.
PROTECTION FOR CURRENTFLOW: If CurrentFlowQuality is "Poor" but ALL of ReefIntegrityScore is at least "Good", BiodiversityIndex is at least "High", PollutionLevel is "Low" or "Moderate", and PreviousStressIncidents is "None" or "Minor", do NOT assign "Stressed" unless there are at least TWO further negatives of moderate or greater severity.
AGGREGATION RULES: Never assign "Stressed" based on just one severe negative/stressor (from A2–A5) if all other major indices (ReefIntegrityScore, PollutionLevel, PreviousStressIncidents, BiodiversityIndex, PredatorActivityLevel) are at their best/next-best/midrange (at least "Moderate", "High", "Low", etc.). If only one severe indicator is present and the rest are moderate or better, assign "Healthy". If TWO severe negatives are present, assign "Stressed".
SEVERE PREDATOR EXCEPTION: PredatorActivityLevel of "Catastrophic" or "Extreme" alone does NOT assign "Stressed" unless at least one additional major negative (from A5) is present.
NOTE: Never assign "Stressed" based only on DistantStressIndicators (any level), CurrentFlowQuality, or AlgalCoverage unless at least TWO other severe indicators from the A5 group are present.
EXTENSIVE & CRITICAL: AlgalCoverage "Extensive" or PollutionLevel "Critical" are sufficient for "Stressed" ONLY with two additional negatives (beyond distant/bleaching).
B. Assign "Healthy" IF AND ONLY IF ALL of the following are true, and NONE of A applies:
1. BiodiversityIndex is at least "Medium".
2. ReefIntegrityScore is at least "Moderate".
3. PollutionLevel is "Low", "Moderate", or "High".
4. PreviousStressIncidents is "None" or "Minor".
5. BleachingEventsPerYear is not "Frequent" or "Constant", UNLESS (PollutionLevel is "Low" or "Moderate" AND PreviousStressIncidents is "None" or "Minor" AND BiodiversityIndex is "High" or "Very High" AND ReefIntegrityScore is at least "Good").
6. AlgalCoverage is NOT "Heavy". "Extensive" is ONLY allowed if all above are strictly met, PredatorActivityLevel is not "High" or worse, and DistantStressIndicators not "Confirmed" or worse—except if all other major indices are at their best or next-best value.
7. DistantStressIndicators is NOT "Confirmed" or worse IF BleachingEventsPerYear is above "Occasional", UNLESS all other major signals are best or next-best (see B5 exception).
8. CurrentFlowQuality is not "Poor", unless all other major signals are at their best or next-best ("Excellent"/"Good" ReefIntegrityScore, "Low"/"Moderate" PollutionLevel, "High"/"Very High" BiodiversityIndex, "None"/"Minor" PreviousStressIncidents, "Moderate Low"/"Moderate" or lower PredatorActivityLevel).
B-EXCEPTION: If both DistantStressIndicators is "Confirmed" AND BleachingEventsPerYear is "Constant" or "Frequent", but all other major indices (as above) are at their best or next-best, assign "Healthy".
C. If neither A nor B applies, assign:
- "Stressed" if there are at least THREE negatives, at least two from: PreviousStressIncidents above "Minor", DistantStressIndicators is "Confirmed" or worse, PredatorActivityLevel is "High" or worse, PollutionLevel is "High" or worse, BiodiversityIndex is "Medium" or lower, AlgalCoverage is "Heavy" or "Extensive", ReefIntegrityScore is "Poor" or lower, CurrentFlowQuality is "Poor".
- "Stressed" if CurrentFlowQuality is "Poor" and two additional negatives (not needing all severe) are present.
- "Healthy" otherwise.
Notes:
- "Stressed" always overrides "Healthy".
- Never assign "Stressed" for only DistantStressIndicators "Confirmed", BleachingEventsPerYear high, or AlgalCoverage "Extensive"/"Heavy" unless combined with at least two other negatives of sufficient severity as detailed above.
- Numerical fields (ObservationDuration) are used ONLY as specified.
- When ambiguous, assign "Healthy" ONLY if positive signals dominate and no A rules match.
Apply these rules EXACTLY as written. Do not interpret or use features not listed above.