Fontana Luiz F, da Silva Frederico S, de Figueiredo Natália G, Brum Daniel M, Netto Annibal D Pereira, de Gigueiredo Junior Alberto G, Crapez Mirian A C
PPG em Geologia e Geofísica Marinha, Universidade Federal Fluminense, Campus da Praia Vermelha, Gragoatá, Niterói, RJ, Brasil.
An Acad Bras Cienc. 2010 Dec;82(4):1013-30. doi: 10.1590/s0001-37652010000400022.
The distribution of selected aromatic compounds and microbiology were assessed in superficial sediments from Suruí Mangrove, Guanabara Bay. Samples were collected at 23 stations, and particle size, organic matter, aromatic compounds, microbiology activity, biopolymers, and topography were determined. The concentration of aromatic compounds was distributed in patches over the entire mangrove, and their highest total concentration was determinated in the mangrove's central area. Particle size differed from most mangroves in that Suruí Mangrove has chernies on the edges and in front of the mangrove, and sand across the whole surface, which hampers the relationship between particle size and hydrocarbons. An average @ 10% p/p of organic matter was obtained, and biopolymers presented high concentrations, especially in the central and back areas of the mangrove. The biopolymers were distributed in high concentrations. The presence of fine sediments is an important factor in hydrocarbon accumulation. With high concentration of organic matter and biopolymers, and the topography with chernies and roots protecting the mangrove, calmer areas are created with the deposition of material transported by wave action. Compared to global distributions, concentrations of aromatic compounds in Suruí Mangrove may be classified from moderate to high, showing that the studied area is highly impacted.
对瓜纳巴拉湾苏鲁伊红树林表层沉积物中的选定芳香化合物分布和微生物学进行了评估。在23个站点采集了样本，并测定了粒径、有机质、芳香化合物、微生物活性、生物聚合物和地形。芳香化合物的浓度在整个红树林中呈斑块状分布，其总浓度最高值出现在红树林的中心区域。苏鲁伊红树林的粒径与大多数红树林不同，其边缘和红树林前方有粉砂，整个表面为砂质，这妨碍了粒径与碳氢化合物之间的关系。获得了平均10%（质量/质量）的有机质，生物聚合物呈现高浓度，特别是在红树林的中部和后部区域。生物聚合物呈高浓度分布。细粒沉积物的存在是碳氢化合物积累的一个重要因素。由于有机质和生物聚合物浓度高，以及有粉砂和根系的地形保护红树林，形成了较为平静的区域，使波浪作用输送的物质得以沉积。与全球分布相比，苏鲁伊红树林中芳香化合物的浓度可从中度到高度分类，表明研究区域受到了高度影响。
