README Dissolved nutrients_incubations.xlsx Dissolved organic and inorganic nutrients for daytime and nighttime incubations with turf algae. D day incubation with turf algae DC seawater control day N night incubation with turf algae NC seawater control night SA surface area covered with turf algae t0 start of incubation tend end of incubation DOC dissolved organic carbon TDN total dissolved carbon DIN dissolved inorganic nitrogen (sum of NO2-, NO32-, and NH+; see table 2 in manuscript for individual values) DON dissolved organic nitrogen (DON = TDN - DIN) n.a. not applicable n.v. negative value (excluded as DIN concentration was higher than TDN concentration) --------------------------------------------------------------------------------------------------------------------- Dissolved nutrients_bioassays.xlsx Dissolved organic and inorganic for bioassays with daytime and nighttime exudates of turf algae. D bioassay day with turf algal exudates DC seawater control day N bioassay night with turf algal exudates NC seawater control night t0 start of bioassay tend end of bioassay DOC dissolved organic carbon TDN total dissolved carbon DIN dissolved inorganic nitrogen (sum of NO2-, NO32-, and NH+; see ESM Table S6. in manuscript for individual values) DON dissolved organic nitrogen (DON = TDN - DIN) n.a. not applicable n.v. negative value (excluded as DIN concentration was higher than TDN concentration) ------------------------------------------------------------------------------------------------------------------------- Dissolved oxygen concentrations_incubations.xlsx Dissolved oxygen concentrations [µmol L-1] recorded during daytime incubations with turf algae. D day incubation with turf algae DC seawater control day N night incubation with turf algae NC seawater control night time Incubation time in min -------------------------------------------------------------------------------------------------------------------------- Light intensity_incubations.xlsx Light intensities [Lux] recorded outside of flow chambers during daytime incubations with turf algae. day 1 D1, D2, D3, and DC1 day 2 D4, D5, D6, and DC2 day 3 D7, D8, D9, and DC3 time Incubation time in min