IB ESS 4.3.12 (HL) Fish stock assessment
IB ESS 4.3.12 (HL) Fish stock assessment

IB Environmental Systems and Societies syllabusESS SL/HLFirst assessment 2026
Practise using fish stock assessment ideas to judge whether harvest rates support conservation, sustainable use and long-term fishery resilience.
How this is tested
- interpret stock monitoring data to decide whether harvest rates are sustainable
- link stock assessment to conservation decisions
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