Serrano, Raquel, Gras, Luis, Gimenez-Casalduero, Francisca, Del-Pilar-Ruso, Yoana, Grindlay, Guillermo, Mora, Juan The role of Cymodocea nodosa on the dynamics of trace elements in different marine environmental compartments at the Mar Menor Lagoon (Spain) Marine Pollution Bulletin. 2019, 141: 52-60. doi:10.1016/j.marpolbul.2019.02.019 URI: http://hdl.handle.net/10045/88753 DOI: 10.1016/j.marpolbul.2019.02.019 ISSN: 0025-326X (Print) Abstract: During mining activities historically developed at Sierra Minera (Cartagena-La UniĆ³n, Spain), high amounts of trace elements were discharged to the Mar Menor coastal lagoon mainly through El Beal Wadi. The objective of this study is to establish the role played by the Cymodocea nodosa in the coastal marine dynamics of trace elements at the mouth of the wadi. To this end, the content of nine trace elements (As, Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) in different marine environmental compartments (i.e. marine and coastal sediments, C. nodosa tissues collected from live seagrass and C. nodosa beach cast litter) at two different locations were determined by inductively coupled plasma atomic emission spectrometry. The results showed that the seagrass C. nodosa could mobilise part of the elements present in marine sediments and water, thereby causing their re-accumulation in the coastal sediments through the C. nodosa beach cast litter. Keywords:Mining waste, Marine chemistry, Trace metals mobilisation, Analytical chemistry, Seagrass leaf litter beds, Mar Menor coastal lagoon Elsevier info:eu-repo/semantics/article