US study proposes new explanation for California anchovy booms and busts

New research from Scripps and NOAA scientists has discovered ecological correlations that could help explain the booms and busts of California's anchovy population. If the correlations hold up to further research, they could one day help inform management of California's anchovy fishery and improve conservation. The Northern Anchovy (Engraulis mordax) is a crucial food source for much of California's most conspicuous marine life—including droves of sea lions, pods of dolphins, lucrative tuna fisheries, and throngs of whales. But one of the hallmarks of the anchovy population off California is the cycle of booms and busts that can last for more than a decade. These ups and downs reverberate through the entire marine ecosystem, with busts at times contributing to starving sea lion pups or leading brown pelicans to abandon their chicks. Exactly what drives these booms and busts has remained elusive despite decades ...