2 documents found, page 1 of 1
Trace metals in mangrove seedlings: role of iron plaque formation
Machado, Wilson Thadeu Valle; Souza, Bruno de Brito Gueiros; Lisboa Filho, S. D.; Lacerda, Luiz Drude deMetal-rich mineral deposits on the roots of aquatic plants, denominated iron plaques, may moderate the uptake of essential, but potentially toxic metals by roots. We investigated the iron plaque formation on the fine, nutritive roots of mangrove seedlings growing in contrasting environments (oxidizing sand flat sediments and reducing mangrove forest sediments) in southeast Brazil. The results indicate that Avic...
Mercury accumulation in sediments of a mangrove ecosystem in SE Brazil
Silva, Luiz Fernando Ferreira da; Machado, Wilson Thadeu Valle; Lisboa Filho, S. D.; Lacerda, Luiz Drude deThe Hg accumulation in sedimentary environments of a mangrove ecosystem in Sepetiba Bay, SE Brazil, was investigated. These environments include sediments of a mangrove forest, the main tidal creek that drains the forest, and the bare seaward-edge mud flat adjacent to forest and tidal creek. Maximum Hg concentration peaks in sediments from the mud flat (184 ng g−1), tidal creek (98 ng g−1), and mangrove forest ...