Resumo

CADAVID-VELASQUEZ, Edith-de-Jesús; PEREZ-VASQUEZ, Nabi-del-Socorro  e  MARRUGO-NEGRETE, José. Heavy metals in macromycetes of the mangrove of the Cispatá bay, Córdoba, Colombia. rev.udcaactual.divulg.cient. [online]. 2019, vol.22, n.2, e1082.  Epub 31-Dez-2019. ISSN 0123-4226.  https://doi.org/10.31910/rudca.v22.n2.2019.1082.

Since 2008, the presence of heavy metals in the estuarine zone of the Bay of Cispatá was evidenced in water, sediment, fish and birds; hence the interest to evaluate it in the mangrove macromycetes, which have a degrading function of organic matter, helping to maintain the dynamic balance of nature by absorbing even toxic substances and essential elements in high concentrations. This study determined the concentrations of 9 heavy metals (Ni, Cu, Mn, Cr, Zn, Co, Hg, Pb and Cd) in 19 genera of macromycetes fungi associated with the mangrove of Cispatá Bay, collected in three sampling sites in three rainy periods during 2016 and 2017. The macromycetes were dried, pulverized and after their complete digestion in a mixture of nitric acid and hydrochloric acid the heavy metals were quantified. The results indicated that all fungi concentrated heavy metals. For the concentrations of heavy metals, no statistically significant differences were found between young and adult macromycetes (p = 0.926), however, statistically significant correlations were observed between Co-Ni, Hg-Zn, Pb-Mn, Pb-Ni, Pb- Co, Cd-Mn, Cd-Co, Cd-Hg and Cd-Ni. Macromycetes have been little studied in Colombian coastal areas, and although in this study the concentrations of heavy metals are not alarming, macromycetes reflect the status of these pollutants in the area.

Palavras-chave : concentration; pollution; estuary; macrohongos.

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