The response taxonomic and trophic of meiobenthic organisms, especially marine nematodes to polybrominated diphenyl ether (BDE-47) was studied using a community from Bizerte lagoon (Nord-East Tunisia). Four concentrations of BDE-47 [D1 (2.5 μg/kg dw), D2 (25 μg/kg dw), D3 (50 μg/kg dw), and D4 (100 μg/kg dw)] were applied, and responses were determined 30 days after exposure. Species abundance and all univariate indices were significantly affected in all treated microcosms compared to the control. The non-parametric cluster based on species abundance separated the nematode population into two groups: control + all treated microcosms. After grouping nematode species according to their trophic diversity, their abundance showed differential responses. The non-metric multi-dimensional scaling analysis and cumulative k-dominance based on the abundance of trophic groups abundances reflected significant separation between the control microcosm and each treatment condition. The correspondence analysis 2D plot generated from nematode species and trophic groups abundance showed the control microcosm was dominated by microvores, represented by two species of Terschellingia. However, when treated with the highest concentration of BDE-47, the community was occupied by the resistant trophic groups of facultative predators and epigrowth feeders represented by Metoncholaimus pristiurus and Paracomesoma dubium, respectively.

利用来自比塞大泻湖（北突尼斯）的一个群落，对中底栖生物（特别是海洋线虫）对多溴联苯醚（BDE-47）的反应进行了分类和营养学研究。施用了四种浓度的BDE-47 [D1（2.5μg/ kg dw），D2（25μg/ kg dw），D3（50μg/ kg dw）和D4（100μg/ kg dw）]，反应分别为在暴露后30天测定。与对照相比，所有处理过的微观世界中物种的丰富度和所有单变量指数均受到显着影响。基于物种丰富度的非参数聚类将线虫种群分为两组：对照+所有处理过的微观世界。根据线虫的营养多样性将线虫种类分组后，它们的丰度表现出不同的响应。非度量多维标度分析和累积k-基于营养组的丰度的丰度反映了对照微观世界和每种治疗条件之间的显着分离。由线虫物种和营养族群丰度生成的对应分析二维图显示，控制缩影主要由微旋涡占主导，以两种特氏灵藻为代表。但是，当用最高浓度的BDE-47进行处理时，该群落被分别由Metoncholaimus pristiurus和Ducomium dubium代表的兼性捕食者和外来饲养者的抗性营养群占据。