2007
DOI: 10.1590/s0100-40422007000100015
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Distribuição espacial de ferro, cobre e chumbo em sedimentos de manguezal em um gradiente de degradação na Baía de Guanabara (Estado do Rio de Janeiro)

Abstract: Recebido em 23/11/05; aceito em 7/4/06; publicado na web em 11/8/06 SPATIAL DISTRIBUTION OF IRON, COPPER AND LEAD IN MANGROVE SEDIMENTS IN A DEGRADATION GRADIENT IN GUANABARA BAY (RIO DE JANEIRO STATE). Iron, copper and lead distribution was evaluated in sediment cores from a disturbed mangrove area in Guanabara Bay: a core from a seaward site where mangrove vegetation was removed ~20 yr before sampling (MD); a core from an intermediate site with dead vegetation, apparently due to insect attack (MP), and a cor… Show more

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Cited by 18 publications
(10 citation statements)
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“…Por essas razões, os manguezais são ambientes ecologicamente e socioeconomicamente relevantes. 4 No Brasil, áreas compostas por mangues são consideradas de preservação permanente, amparadas pela LEI N° 4.771, DE 15 DE SETEMBRO DE 1965. 5 Porém, segundo Diegues a degradação desses ecossistemas se dá principalmente pela implantação de polos petroquímicos e minero-metalúrgicos, pela expansão urbana oriunda da especulação imobiliária.…”
Section: Introductionunclassified
“…Por essas razões, os manguezais são ambientes ecologicamente e socioeconomicamente relevantes. 4 No Brasil, áreas compostas por mangues são consideradas de preservação permanente, amparadas pela LEI N° 4.771, DE 15 DE SETEMBRO DE 1965. 5 Porém, segundo Diegues a degradação desses ecossistemas se dá principalmente pela implantação de polos petroquímicos e minero-metalúrgicos, pela expansão urbana oriunda da especulação imobiliária.…”
Section: Introductionunclassified
“…Up to late 1980s, a combination of factors may have caused changes in the sedimentation rate including 23 These radionuclides are present in the marine environment due to the nuclear weapons testing during the 50-60's and the Chernobyl accident in 1986. However, at the [20][21][22][23][24][25][26][27][28][29][30] o latitude band of the Southern Hemisphere the nuclear bomb fallout deposition is five times lower than observed, for example, at the 40-50 o latitude band in the Northern Hemisphere. 24 When well documented, the industrial development of a region is a valid alternative to the use of 137 Cs.…”
Section: Resultsmentioning
confidence: 99%
“…These sediments also showed acute toxicity. According to BORGES et al (2007), the area close to stations 1 and 3 is considered polluted by Cu and Pb, and this problem has been exacerbated by the degradation of the vegetation in this area, which has modified the accumulation of organic-matter, possibly also altering the processes of the accumulation of metals. It is characterized as a region of low depth, high ammonia levels and low dissolved oxygen, with poor circulation and high inflow of domestic sewage, in addition to the residues from the refinery.…”
Section: Discussionmentioning
confidence: 99%