Phytoplankton Genera Structure Revealed from the Multispectral Vertical Diffuse Attenuation Coefficient

The composition of phytoplankton and the concentration pigments in their cells make absorption specific coefficients key parameters for bio-optical modeling. This study investigated whether multispectral vertical diffuse attenuation coefficient downward irradiance (Kd) gradients could be a good framework accessing genera. In situ measurements remote sensing reflectance (Rrs), obtained an Amazon Floodplain Lake (Lago Grande do Curuai), were used to invert Kd, focusing on Sentinel-3/Ocean Land Color Instrument (OLCI) sensor bands. After that, analysis based organization three-way tables (STATICO) was applied evaluate relationships between genera Kd at different OLCI Our results indicate that are organized according ability use light intensity spectral ranges visible (400 700 nm). As availability changes seasonally, structure as well. Some genera, such Microcystis, adapted low 550–650 nm, therefore high values this range would dominance Microcysts. Other Aulacoseira, highly harvesting blue-green with higher probably grow lakes lower concentrations colored dissolved organic matter absorbs blue (405–498). These findings important step describing communities using orbital data tropical freshwater floodplains. Furthermore, approach can biodiversity indexes access diversity these environments.