CHLOROPHYLL-A CONCENTRATIONS PROVIDE AN INDICATION OF PHYTOPLANKTON ABUNDANCE. ANALYSIS OF CHLOROPHYLL-A CONCENTRATION DATA FOR CENTRAL PRINCE WILLIAM SOUND SHOWS THAT PHYTOPLANKTON ABUNDANCE VARIES WITHIN AND BETWEEN YEARS. THE SPRING PHYTOPLANKTON BLOOM IN 2014 WAS EARLIER AND STRONGER THAN AVERAGE, WHILE THE BLOOM IN 2015 WAS SMALLER AND LATE.