Phytoplanktonic community and bio-optical properties in coastal waters of an Argentinian Patagonian gulf

The influence of the phytoplankton community in the light absorption budget was quantified in coastal waters of the North region of the San Jorge Gulf (Argentinian Patagonia). The phytoplanktonic composition and their absorption spectra were determined. Nanoflagellates and diatoms were the dominant...

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Bibliographic Details
Published in:	Marine pollution bulletin Vol. 194; p. 115388
Main Authors:	Villalobos, L.L. Gracia, Williams, G.N., Glembocki, N.G., Pisoni, J.P., Nocera, A.C., Ferrando, A.
Format:	Journal Article
Language:	English
Published:	Elsevier Ltd 01-09-2023
Subjects:	Marine-coastal environments Optical properties Phytoplankton Satellite ocean color Toxigenic dinoflagellate Phytoplankton Satellite ocean color Toxigenic dinoflagellate Optical properties Marine-coastal environments
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Summary:	The influence of the phytoplankton community in the light absorption budget was quantified in coastal waters of the North region of the San Jorge Gulf (Argentinian Patagonia). The phytoplanktonic composition and their absorption spectra were determined. Nanoflagellates and diatoms were the dominant groups. The toxigenic dinoflagellate Dinophysis acuminata was recorded in all the sampling sites. The optical characterization of the particulate material showed that 60 % of the absorption at 443 nm and 88 % of absorption at 675 nm was due to phytoplankton. The contributions of phytoplankton to total absorption at 443 nm wavelengths reached 50 %. The absorption by chromophoric dissolved organic matter (CDOM) and non-algal particles (NAP) was predominant in turbulent waters (>60 %). This study shows the influence of submesoscale physical-biological interactions in the light absorption budget. The field absorption spectra of active optical components are of interest in the assessment and development of regional ocean color satellite algorithms. •The light absorption budget was evaluated in coastal waters of the San Jorge Gulf.•Non-algal particle and organic matter absorption were dominant in turbulent waters.•Satellite reflectance showed a strong relationship with absorption by phytoplankton.•Microplankton dominated the phytoplankton community in waters with less turbidity.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0025-326X 1879-3363
DOI:	10.1016/j.marpolbul.2023.115388