Climatic warming and the decline of zooplankton in the California Current

Citation:
Roemmich, D, McGowan J.  1995.  Climatic warming and the decline of zooplankton in the California Current. Science. 267:1324-1326.

Date Published:

Mar

Keywords:

coast, ocean

Abstract:

Since 1951, the biomass of macrozooplankton in waters off southern California has decreased by 80 percent. During the same period, the surface layer warmed-by more than 1.5 degrees C in some places-and the temperature difference across the thermocline increased. Increased stratification resulted in less lifting of the thermocline by wind-driven upwelling. A shallower source of upwelled waters provided less inorganic nutrient for new biological production and hence supported a smaller zooplankton population. Continued warming could lead to further decline of zooplankton.

Notes:

n/a

Website

DOI:

10.1126/science.267.5202.1324