Round UUID: fe4d2fe6-2aac-4a34-b302-64004cdc825e
Prompt:
Classify each reef as either 'Healthy' or 'Stressed' using ONLY the following explicit, threshold-based rules. Apply the rules STRICTLY IN ORDER as written below. Do not interpret, interpolate, or use features not named in these rules. When a rule matches, assign immediately—do not check further rules lower in order.
A. Assign 'Stressed' if ANY of these are true (check in this order):
1. ReefIntegrityScore is 'Very Poor'.
2. PollutionLevel is 'Critical' AND at least ONE of:
- PreviousStressIncidents is 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' AND (at least TWO of: AlgalCoverage is 'Heavy' or 'Extensive'; ReefIntegrityScore is 'Poor' or 'Very Poor'; PollutionLevel is 'High' or worse; PreviousStressIncidents is above 'Minor'; BiodiversityIndex is 'Medium' or lower)
4. BleachingEventsPerYear is 'Constant' or 'Frequent' AND DistantStressIndicators is 'Confirmed' or worse AND (at least TWO of: PollutionLevel is 'High' or worse; ReefIntegrityScore is below 'Good'; PreviousStressIncidents is not 'None'; PredatorActivityLevel is 'High' or worse; BiodiversityIndex is 'Medium' or lower)
5. At least TWO of these severe stress signals are true:
• 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 is true
6. ObservationDuration > 100 AND BleachingEventsPerYear is 'Constant' or 'Frequent' AND at least one other stress signal from list in A5 is present.
7. (Aggregate Stress Trigger) If at least THREE of these moderate/major negatives are present: PreviousStressIncidents above 'Minor', PredatorActivityLevel is 'High' or worse, PollutionLevel is 'High', BiodiversityIndex is 'Medium' or lower, AlgalCoverage is 'Heavy' or 'Extensive', ReefIntegrityScore is 'Poor' or lower, CurrentFlowQuality is 'Poor', DistantStressIndicators is 'Possible' or worse. Only apply if not already Stressed above, and allow this rule to override 'Healthy'.
SPECIAL PROTECTION: If ALL of these are true — ReefIntegrityScore is 'Good' or 'Excellent', PollutionLevel is 'Low' or 'Moderate', PreviousStressIncidents is 'None', BiodiversityIndex is 'High' or 'Very High', PredatorActivityLevel is 'Moderate' or lower — then do NOT assign 'Stressed' due to DistantStressIndicators 'Confirmed' or worse or due to PollutionLevel 'Critical' alone, or due to BleachingEventsPerYear with <=1 other moderate negative.
B. Assign 'Healthy' IF AND ONLY IF ALL of these are true (and NONE of the above A rules match):
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' AND BiodiversityIndex is 'High' or 'Very High' AND ReefIntegrityScore is at least 'Good'; all must be true for this exception).
6. AlgalCoverage is not 'Heavy'. 'Extensive' is ONLY allowed if all above Healthy criteria are strictly met AND PredatorActivityLevel is not 'High' or worse AND DistantStressIndicators is not 'Confirmed' or worse.
7. DistantStressIndicators is not 'Confirmed' or worse IF BleachingEventsPerYear is above 'Occasional', UNLESS all other major signals are best (see B5 exception).
8. CurrentFlowQuality is not 'Poor', except if all other major signals are at their best (as for B5 exception).
C. If neither A nor B applies, assign:
- 'Stressed' if there are at least THREE negative signals, of which at least TWO must be 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'.
- 'Healthy' otherwise.
Notes:
- "Stressed" always overrides "Healthy" if both would apply.
- AlgalCoverage 'Extensive' or DistantStressIndicators 'Confirmed' alone are NOT sufficient for 'Stressed'; consider only with other explicit negatives as above.
- Numerical fields (e.g., ObservationDuration) are used ONLY as allowed above.
- When ambiguous, assign 'Healthy' ONLY if positive signals dominate and no A rules match.
Apply these rules EXACTLY as written. Do not infer, interpolate, or use features not named above.