Fig 4
From: Stress tolerance of Antarctic macroalgae in the early life stages
Inhibition of maximum quantum yield of fluorescence (Fv/Fm) after a 4-h exposure to UV radiation and subsequent 4-h recovery in reproductive cells of Adenocystis utricularis, Monostroma hariotii, Pyropia endiviifolia, Iridaea cordata, Gigartina skottsbergii, and Ascoseira mirabilis collected in Fildes Peninsula (King George Island, Antarctica). Values are mean ± S.D. (4–5 measurements) and represent the percentage reduction in Fv/Fm of UV treatment relative to PAR exposure. Different letters denote significant differences between mean values within temperature treatments according to Tukey test (P < 0.05)