Anomalous pelagic nekton abundance, distribution, and apparent recruitment in the northern California Current in 2004 and 2005

摘要: [1] Although the California Current has undergone substantial environmental shifts in past few decades, summer of 2005 exhibited highly anomalous conditions relative to all previous recorded summers terms late initiation upwelling and resulting elevated surface temperatures depressed productivity through July. The response pelagic nekton these was widespread included onshore poleward displacement taxa new geographic areas, population changes within normal range, reduced early life stages based on larval juvenile surveys. Some distributions 2004. Many ecologically important species were affected. nektonic community off greater than during El Nino conditions.