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Re: Green light
As far as I know, green light is not a requirement for normal growth and
is used much less efficiently than other wavelengths.
On another note, freshwater ecosystems do absorb light with fairly high
extinction coefficients. Particulates, DOC, phytoplankton, zooplankton
all absorb at particular wavelengths... the result is a light spectrum
that is vastly different from incident radiation and one that is CHANGING
all the time. IMHO this makes aquatic plants extremely well adapted to
scavenging any and all PAR.