Distribution and abundance of potentially harmful dinoflagellates were assessed in three matrices in relation with heavy metals concentrations in the Gulf of Gabes. Tidal Flat Waters (TFW), sediments and macroalgae () were collected from five sites along the tidal coast, and nine potentially harmful dinoflagellates were identified. Igeo accumulation index and Enrichment Factor revealed extremely severe enrichment by Cu and Cd at sites situated near to the phosphate factory. displayed high bioconcentration and bioaccumulation values particularly for Fe and Cr. The relationships between potentially harmful dinoflagellates and heavy metals depend on substrata and species. showed a certain degree of affinity for Cu (p < 0.05; r = 0.97) in sediments, but not on . Despite the extremely high enrichment of some heavy metals, potentially harmful dinoflagellates were also consistently found in the most polluted area, revealing a high adaptation to these major contamination levels.

中文翻译：

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加贝斯湾（突尼斯）环境基质中重金属的积累及其对潜在有害甲藻发育的影响

评估了三个基质中潜在有害甲藻的分布和丰度与加贝斯湾重金属浓度的关系。从潮汐沿岸的五个地点收集了潮滩水域 (TFW)、沉积物和大型藻类 ()，并鉴定出九种潜在有害的甲藻。Igeo富集指数和富集因子显示，位于磷厂附近的地点Cu和Cd富集极其严重。显示出高生物浓度和生物富集值，尤其是铁和铬。潜在有害的甲藻和重金属之间的关系取决于基质和物种。对沉积物中的 Cu 显示出一定程度的亲和力 (p < 0.05; r = 0.97)，但在 上则不然。尽管某些重金属富集度极高，但在污染最严重的地区也始终发现了潜在有害的甲藻，这表明它们对这些主要污染水平具有高度适应能力。