Table 1. Environmental data from sedimentary samples.

Sediment grain size, total organic matter (TOM), and metal concentrations (mg/Kg), as median, minimum and maximum, obtained from sampled station in Rio Doce estuary in August, 2017 and August, 2018. Significant differences (p < 0.05) are presented in bold.

Variables	Year
	2017*		2018		p
	Median	Min - Max	Median	Min–Max
%Sand	87.8	11.8–96.2	85.5	48.8–94.1	0.532
TOM	3.20	1.50–16.8	4.00	1.50–11.8	0.646
Al	32,495	10,066–65,386	19,467	10,754–27,590	<0.001
As	2.84	<LQ–53.1	4.29	0.15–12.6	0.536
Ba	238.7	33.3–688.4	68.3	26.1–177.3	<0.001
Cd	3.25	0.57–7.53	1.76	0.72–2.67	<0.001
Co	9.41	3.81–20.9	7.18	4.78–9.69	0.004
Cr	47.1	17.7–79.6	25.1	10.25–45.3	<0.001
Cu	8.83	2.31–16.1	4.05	0.64–6.65	<0.001
Fe	35,538.3	13,204.4–57,923.3	15,990.5	8,981.7–26,862.1	<0.001
Mn	551.8	148.4–1094.9	345.3	163.5–539.2	<0.001
Ni	14.5	7.17–28.6	10.1	6.27–15.0	<0.001
Pb	101.9	4.92–182.2	6.52	3.68–10.9	<0.001
Zn	35.4	15.3–85.9	27.4	14.6–46.1	0.009

Notes.

^*Data from August, 2017 were obtained from Bernardino et al. (2019).