Trace metals in sediments and Zostera marina of San Ignacio and Ojo de Liebre lagoons in the central pacific coast of Baja California, Mexico

Archives of Environmental Contamination and Toxicology
J V Macías-ZamoraD López-Sánchez

Abstract

San Ignacio and Ojo de Liebre lagoons in central Baja California, Mexico are nursery and grazing grounds for whales and turtles. Ojo de Liebre Lagoon also supports a salt mine operation. By concentrating trace metals via evaporation, this activity might harm biota. Consequently, salt mining might be incompatible with the lagoon's ecological role. Eelgrass can incorporate these elements and reroute them to other organisms. Trace metals in sediments (Cd, Co, Cu, Mn, Ni, Pb, Zn, and Fe) were measured at both lagoons. Some (Cu, Mn, Pb, and Zn) were also measured in Zostera marina patches at both lagoons. The results did not show elevated metal concentration at any lagoon, either for sediments or eelgrass. No statistically significant differences between lagoons were found. However, eelgrass at both lagoons showed larger concentration ranges than in sediments. Also, a correlation exists between sediment metal concentration and its concentration in eelgrass. Surprisingly, several sediment metal concentrations are higher than those considered as elevated for the Southern California Bight.

References

Jan 1, 1995·Advances in Microbial Ecology·D J Des Marais
Mar 2, 2002·Journal of Environmental Monitoring : JEM·Michael Kerste, Foppe Smedes
Apr 29, 2004·Bulletin of Environmental Contamination and Toxicology·C J De Luna, L Rosales-Hoz

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Citations

Nov 26, 2015·Science Advances·Enriqueta VelardeRobert T Patton
Feb 8, 2021·Marine Pollution Bulletin·Jacob Alberto Valdivieso-OjedaJonathan García-Orozco

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