Table 1 Initial and final pigment ratios introduced in and yielded by the ChemTax analysis, respectively

Initial Ratios	Chl b	But Fuco	Hex Fuco	Allo	Fuco	Perid	Zea	DV Chl b	Chl c1 + c2	Chl c3	Lut	Neo	Viola	Pras	Chl a
Cyanobacteria1	0	0	0	0	0	0	0.105	0	0	0	0	0	0	0	1
Cyanobacteria2	0	0	0	0	0	0	0.453	0	0	0	0	0	0	0	1
Cyanobacteria4	0.495	0	0	0	0	0	0.224	0.495	0	0	0	0	0	0	1
Prasinophytes3	0.368	0	0	0	0	0	0.033	0	0	0	0.013	0.051	0.035	0.145	1
Cryptophytes	0	0	0	0.359	0	0	0	0	0.145	0	0	0	0	0	1
Diatoms1	0	0	0	0	0.711	0	0	0	0.074	0	0	0	0	0	1
Haptophytes6	0	0.004	0.237	0	0.066	0	0	0	0.178	0.156	0	0	0	0	1
Dinoflagellates1	0	0	0	0	0	0.541	0	0	0.197	0	0	0	0	0	1

Final Ratios	Chl b	But Fuco	Hex Fuco	Allo	Fuco	Perid	Zea	DV Chl b	Chl c1 + c2	Chl c3	Lut	Neo	Viola	Pras	Chl a
Cyanobacteria1	0	0	0	0	0	0	0.101	0	0	0	0	0	0	0	1
Cyanobacteria2	0	0	0	0	0	0	1.343	0	0	0	0	0	0	0	1
Cyanobacteria4	0.432	0	0	0	0	0	0.203	0.363	0	0	0	0	0	0	1
Prasinophytes3	0.605	0	0	0	0	0	0.035	0	0	0	0.013	0.047	0.035	0.082	1
Cryptophytes	0	0	0	0.322	0	0	0	0	0.129	0	0	0	0	0	1
Diatoms1	0	0	0	0	0.609	0	0	0	0.098	0	0	0	0	0	1
Haptophytes6	0	0.009	0.488	0	0.096	0	0	0	0.215	0.211	0	0	0	0	1
Dinoflagellates1	0	0	0	0	0	0.579	0	0	0.236	0	0	0	0	0	1

Ratios were taken from Higgins et al.⁵⁸. Note: Cyanobacteria1 contains fresh and seawater filamentous colonial cyanobacteria such as Trichodesmium, Nodularia, or Nostoc; Cyanobacteria2 contains mainly Synechococcus; Cyanobacteria4 contains mainly Prochlorococcus; Prasinophytes3 contains groups like Ostreococcus, Micromonas or Prasinococcus; Diatoms1 contains microplankton diatoms such as Thalassiosira, Skeletonema or Chaetoceros; Haptophytes6 contains mainly Gephyrocapsa (former Emiliania); Dinoflagellates1 represents peridinin containing dinoflagellates such as Tripos (former Ceratium), Prorocentrum or Peridinium. The pigments included in the analysis were Chlorophyll b (Chl b), 19´-Butanoyloxyfucoxanthin (But Fuco), 19´-Hexanoyloxyfucoxanthin (Hex Fuco), Alloxanthin (Allo), Fucoxanthin (Fuco), Peridinin (Perid), Zeaxanthin (Zea), Divinyl Chlorophyll b (DV Chl b), the sum of Chlorophyll c1 and c2 (Chl c1 + c2), Chlorophyll c3 (Chl c3), Lutein (Lut), Neoxanthin (Neo), Violaxanthin (Viola), Prasinoxanthin (Pras), and Chlorophyll a (Chl a).

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