During a major El Niño event, Peru closed its anchoveta fishery due to population declines linked to warming waters.
Notes on verification
Confirmed by multiple independent sources including Wikipedia, Grist, SeafoodSource, Oceana, and academic case studies, spanning multiple El Niño events from 1972 to 2024. [cascade flags: wikipedia_dropped_other_sources_exist | tier=unverified indep_score=0.3 clusters=4 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]
Sources
- What You Need to Know about El Niño (seed:science_and_space)
- https://oceana.org/blog/overfishing-and-el-nino-push-worlds-biggest-single-species-fishery-critical-point/ (corroboration)
- https://grist.org/economics/el-nino-scrambling-fisheries-throughout-the-pacific/ (corroboration)
- https://www.resalliance.org/tdb-database/71 (corroboration)
- https://wodnesprawy.pl/en/el-nino-billion-dollar-losses-in-perus-fishing-industry/ (corroboration)