info:eu-repo/semantics/article
Potentially toxic elements and biochemical components in surface sediments of NW Mexico: An assessment of contamination and trophic status
Fecha
2019-12Registro en:
Torres, Américo Iadran; Rivera Hernández, José Roberto; Giarratano, Erica; Faleschini, Mauricio; Green Ruiz, Carlos René; et al.; Potentially toxic elements and biochemical components in surface sediments of NW Mexico: An assessment of contamination and trophic status; Pergamon-Elsevier Science Ltd; Marine Pollution Bulletin; 149; 12-2019
0025-326X
CONICET Digital
CONICET
Autor
Torres, Américo Iadran
Rivera Hernández, José Roberto
Giarratano, Erica
Faleschini, Mauricio
Green Ruiz, Carlos René
Gil, Mónica Noemí
Resumen
Concentrations of Potentially Toxic Elements (PTEs) were determined in sediments from Santa María La Reforma (SAMARE) coastal lagoon and Mocorito River, Mexico. Furthermore, biochemical composition of organic matter in sediments was analyzed to assess their trophic status. The PTEs concentrations followed the order Fe > Pb ∼ Zn > Cr ∼ Cu > Ni ∼ As ∼ Co > Cd. Except for As, PTEs showed correlation between them indicating a common source. As and Pb were above the threshold levels of toxic effect, but they did not exceed the levels of probable effect for biota. Metals were correlated with carbohydrates and As with lipids. Low protein/ carbohydrate ratios suggest that decomposed detritus of nitrogen-rich algae as well as fresh mangrove litter can be present. These biochemical proxies suggest that meso-oligotrophic conditions prevail in SAMARE. Considering that fishing activities are practiced and that the northern portion of SAMARE was classified as a RAMSAR site, the information presented is useful to generate strategies for the management of this ecosystem.