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“Interdecadal trends in chlorophyll-a (Chl-a) concentration were observed by Sugimoto and Tadokoro  in eastern Bering Sea regions deeper than 150 m but it is not known if these resulted in changes in either the spring or overall annual primary production levels.”
“Vertical distribution of chlorophyll-a along the PM line in the Japan Sea.”
“They examined a half-million data points collected using a tool called a Secchi disk, as well as measurements of chlorophyll-a pigment produced by the plankton.”
“The university's program is set up so that a negative impact can only be proven if Lake Source Cooling changes a water quality measure such as phosphorus or chlorophyll-a by 30 percent or more.”
Looking for tweets for chlorophyll-a.