Fig. 6: Absorption spectra of ice algae and phytoplankton.
From: Loss of sea ice alters light spectra for aquatic photosynthesis
a Natural assemblages of ice diatoms collected from the East Antarctic (dark brown lines) and the Weddell Sea (light brown lines). Spectral data are from Dalman et al.44. b Cultures of a prasinophyte (here we show Ostreococcus tauri81, which has a similar pigmentation as Micromonas spp.) and the cryptophytes Rhodomonas falcata NIES702 (phycobiliprotein class Cr-PE 545)53, Hemiselmis rufescens CCMP440 (Cr-PE 555)53, Hemiselmis pacifica CCMP706 (Cr-PC 577)53, and Chroomonas mesostigmatica CCMP1168 (Cr-PC 645)82. Vertical dashed lines indicate the 8th, 7th, 6th, and 5th harmonics (at 401, 449, 514, and 605 nm) and the 4.1 sub-harmonic (at 662 nm) of the vibrational modes of H2O. c Phaeocystis antarctica collected from under sea ice (brown line) and from open water (green line) at McMurdo Sound, Antarctica. Spectral data are from Beeler SooHoo et al.66. All absorption spectra were normalized to their maximum value, after baseline correction for minimum absorbance at 750 nm. Abbreviations: Chl chlorophyll, FX fucoxanthin, Car carotenoid, PE phycoerythrin, PC phycocyanin.
