Centro de Estudos do Mar, Universidade Federal do Paraná, Av. Beira Mar s/n, CEP 83255-976, PO Box 61, Pontal do Paraná, Paraná, Brazil.
Centro de Estudos do Mar, Universidade Federal do Paraná, Av. Beira Mar s/n, CEP 83255-976, PO Box 61, Pontal do Paraná, Paraná, Brazil.
Mar Pollut Bull. 2017 Dec 15;125(1-2):66-76. doi: 10.1016/j.marpolbul.2017.07.074. Epub 2017 Aug 5.
Changes in the structure of benthic macrofauna and its relationship with hydrocarbon contamination were determined at different spatial scales in sublittoral sediments of two large estuaries in Brazil. Guanabara Bay (GB) is a heavily polluted estuary due to the presence of a large industrial complex and high demographic density. Laranjeiras Bay (LB) lies in an Environmental Protection Area and can still be considered as preserved from human activities. Despite some spatial differences within each bay, the PAHs concentrations were significantly and consistently higher in GB, with values generally above the threshold effect levels. No signs of hydrocarbon contamination were observed in LB. Macrofauna abundance, diversity and overall assemblage structure were largely different between bays. Canonical analysis of principal coordinates (CAP), used to model the relationship between macrofauna and PAHs levels, indicated that this class of hydrocarbons is the main structuring factor of soft-bottom assemblages in both bays.
在巴西两个大型河口的亚潮带沉积物中，从不同空间尺度上确定了底栖大型动物群的结构变化及其与碳氢化合物污染的关系。瓜纳巴拉湾（GB）由于存在大型工业综合体和高密度人口，受到严重污染。拉兰热拉斯湾（LB）位于环境保护区，仍可被视为未受人类活动影响的区域。尽管每个海湾内存在一些空间差异，但 GB 中的多环芳烃浓度明显且一致较高，通常高于阈值效应水平。LB 中未观察到碳氢化合物污染的迹象。大型动物群的丰度、多样性和总体组合结构在两个海湾之间存在很大差异。主要坐标典范分析（CAP）用于模拟大型动物群与多环芳烃水平之间的关系，表明此类碳氢化合物是两个海湾软底组合的主要结构因素。
