Changes in the cetacean assemblage of a coastal upwelling ecosystem during El Niño 1997–98 and La Niña 1999

  title={Changes in the cetacean assemblage of a coastal upwelling ecosystem during El Ni{\~n}o 1997–98 and La Ni{\~n}a 1999},
  author={S. Benson and D. Croll and B. Marinovic and F. Chavez and J. Harvey},
  journal={Progress in Oceanography},
Abstract We report results of ecosystem studies in Monterey Bay, California, during the summer upwelling periods, 1996–99, including impacts of El Nino 1997–98 and La Nina 1999. Random-systematic line-transect surveys of marine mammals were conducted monthly from August to November 1996, and from May to November 1997–99. CTDs and zooplankton net tows were conducted opportunistically, and at 10 predetermined locations. Hydroacoustic backscatter was measured continuously while underway to… Expand

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