Centro para el Estudio de Sistemas Marinos (CESIMAR), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CCT CONICET-CENPAT, Puerto Madryn, Chubut, Argentina.
Centro para el Estudio de Sistemas Marinos (CESIMAR), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CCT CONICET-CENPAT, Puerto Madryn, Chubut, Argentina.
Mar Pollut Bull. 2023 Sep;194(Pt B):115388. doi: 10.1016/j.marpolbul.2023.115388. Epub 2023 Aug 16.
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.
本研究量化了圣豪尔赫湾北部（阿根廷巴塔哥尼亚）沿海海域浮游植物群落对光吸收预算的影响。测定了浮游植物的组成及其吸收光谱。纳米鞭毛藻和硅藻是主要群体。所有采样点均记录到产毒甲藻夜光藻。颗粒物质的光学特性表明，443nm 处 60%的吸收和 675nm 处 88%的吸收归因于浮游植物。浮游植物对 443nm 波长总吸收的贡献达到 50%。在湍流水体中（>60%），色素溶解有机物（CDOM）和非藻类颗粒（NAP）的吸收占主导地位。本研究表明，亚中尺度物理-生物相互作用对光吸收预算有影响。活性光学成分的现场吸收光谱对于区域海洋颜色卫星算法的评估和开发具有重要意义。
