Data from: Evaluation of benthic communities and ecological quality in Amazonian estuarine beaches using a small-scale intertidal grid

This dataset repository contains all raw data files, processed matrices, spatial interpolation grids, and reproducible R scripts associated with the ecological, sedimentological, and geochemical assessment of estuarine beaches in Cajueiro and Carimã (Northern Coast of Brazil), sampled across different seasonal periods and intertidal zones. 1. Data Files Raw_Water.csv: Contains raw in-situ physical and chemical water parameters monitored across estuarine sites, including water temperature, salinity, dissolved oxygen (DO), and pH, categorized by site, sampling month, season, and replicate.

Benthos_Sediment_Data.csv: Comprehensive matrix integrating benthic macrofauna taxonomic abundances, sediment grain-size fractions (fine sand, silt, clay), organic matter content (OM), and trace metal concentrations (Cd, Pb, Cu, Cr, Mn, Ni, Zn, Hg, among others) per sampling unit. Raw_AMBI.csv: Long-format table detailing benthic macroinvertebrate taxa, abundance per replicate, taxonomic assignment to Ecological Groups (EQ I to V) based on sensitivity to environmental disturbance, alongside spatial and temporal metadata (Site, Month, Season, Zonation, Replicate).