Influence of microphytobenthos on the sedimentary organic matter composition in two contrasting estuarine microhabitats

Assessment of Primary Production in an Estuarine Environment: The Case of the Oum Er Rbia Estuary (Atlantic Coast, Morocco)

“…In the Bahía Blanca estuary in Argentina, Carbone et al (2016) reported that the highest chlorophyll-a concentrations ranged from 1.87 to 13.7 mg/m3 and were recorded near wastewater, while the seasonal distribution of the phaeopigment showed an inverse trend of chlorophyll-a, mainly in areas where the influence of the adjacent sea is strongest, with two significant peaks reported, in winter and spring (7.65 μg/L and 7.96 μg/L, respectively), which coincide with the decrease in chlorophyll-a values. Fernández et al (2021) reported that the highest annual mean concentrations of chlorophyll-a and phaeopigments were recorded in September (30.68 ± 11.21 and 19.13 ± 8.88 μg/g dry matter for chlorophyll-a and phaeopigments, respectively) and August (9.801 ± 2.96 and 8.16 ± 0. 81 μg/g dry matter), while the lowest concentration of chlorophyll-a was recorded in February (1.25 ± 0.41 μg/g dry matter) and January (1.25 ± 0.56 μg/g dry matter) and the lowest concentration of phaeopigments was recorded in May (3.01 ± 0.86 μg/g dry matter) and April (2.86 ± 0.19 μg/g dry matter).…”