| Sediment cores 40 cm depth were taken in triplicate at nine points along an unvegetable intertidal flat, to assess the ecological implications of sedimentological characteristics. Each core was sectioned in 5 cm depht layers. In these sub-samples temperature, pH, water, organic matter and carbonate content were determined. Granulometric analysis, porosity, qualitative and quantitative identification of sediment components were also carried. The sediments presented low water (15.6 - 37.2 %), organic matter (0.7 - 5.0 %) and carbonates (0.3 - 1.0 %) contents, prevailing fine to very fine sand at surface. Statistical analysis showed a strong horizontal homogeneity regarding sedimentological and physiochemical parameters. Organic matter exhibit a general trend... |
