Nature World: Marine animals off the California coast are experiencing short-term slumps in growth and reproduction, and new research suggests that the phenomenon could be linked to an increasing variability in the strength of coastal upwelling currents, which work to supply nutrients to a number of crucial ecosystems in the region.
Along North America's west coast, winds generally pull nutrient-rich water from deep in the ocean and bring it to the shallow surface. This allows phytoplankton to bloom, which...