Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece.
Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece.
Sci Total Environ. 2014 Jul 1;485-486:554-562. doi: 10.1016/j.scitotenv.2014.03.125. Epub 2014 Apr 17.
The impact of intensive aquaculture activities on marine sediments along three coastal areas in Greece was studied. The content of nine metals/metalloids (Cu, Cd, Pb, Hg, Ni, Fe, Mn, Zn, As), and three nutrients (P, N and C), that seem to accumulate in marine sediments, was determined under the fish cages (zero distance) and away (50 or 100 m) from them. Elevated concentrations for phosphorus, nitrogen, copper, zinc and cadmium were recorded in the areas where farming establishments are moored. In parallel, the intrinsic differences between the aquaculture facilities and their seasonal variations were investigated. The individual characteristics of each farm (local water currents, facilities' capacity, transferring mechanisms or the geological background) were the determinant factors. On the contrary, significant seasonal differences were not recorded. Statistical techniques, as the non-parametric Mann-Whitney U and Kruskal-Wallis tests and principal components analysis (PCA), factor analysis (FA) and discriminant analysis (DA), were used for the evaluation of the results. These chemometric tools succeeded to discriminate the sampling points according to their distance from the cages or the origin of the sample. Variables' significance, correlations and potential accumulation sources were also investigated.
研究了希腊三个沿海地区集约化水产养殖活动对海洋沉积物的影响。在鱼笼（零距离）和远离（50 或 100 米）它们的地方，测定了似乎在海洋沉积物中积累的九种金属/类金属（铜、镉、铅、汞、镍、铁、锰、锌、砷）和三种营养物质（磷、氮和碳）的含量。在养殖设施停泊的地区，记录到了磷、氮、铜、锌和镉的浓度升高。同时，还研究了水产养殖设施的内在差异及其季节性变化。每个农场（当地水流、设施容量、转移机制或地质背景）的个体特征是决定因素。相反，没有记录到显著的季节性差异。统计技术，如非参数曼-惠特尼 U 检验和克鲁斯卡尔-沃利斯检验以及主成分分析（PCA）、因子分析（FA）和判别分析（DA），用于评估结果。这些化学计量工具成功地根据它们与笼子的距离或样本的来源来区分采样点。还研究了变量的重要性、相关性和潜在的积累来源。
