The aims of this study were to assess the biodiversity of periphytic diatom assemblages in fresh, brackish and marine waterbodies of Korea, and to assess the effect of environmental and anthropogenic factors on parameters such as the quantity and biovolume of lipid bodies and deformations of diatoms as early warning measures of anthropogenic impact. Diatom samples were collected from 31 sites (14 freshwater, 10 brackish and 7 marine), which included less impacted (upstream) and impacted (downstream) sites in each water type. Our results showed higher abundance and biodiversity of periphytic diatoms at the less impacted sites in terms of species richness, Shannon index, cell count and biovolume of the communities than at the impacted sites for freshwater and estuarine sites, but not for marine sites. 84 diatom species were noted in freshwater, 80 in brackish water and 40 in marine waters. In comparison to diatoms of the impacted sites, those of less impacted freshwater, brackish and marine sites had less lipid bodies (also less biovolume) and a lower percentage of teratological frustules, and showed more mobile forms in the community. Principal component analysis (PCA) also showed clear segregation of impacted from less impacted sites by the extent of the presence of lipid bodies (higher both in number and biovolume) and deformities in diatom frustules. Pearson correlation analysis revealed that lipid body induction and deformities were positively correlated with metals (Cd, Co, Cr, Cu, Fe, Pb and Zn) and nutrients (total phosphorus and total nitrogen), whereas they showed negative correlation with salinity, dissolved oxygen, suspended solutes and pH. Life-forms, lipid bodies and deformities in diatoms may be an effective biomonitoring tool for assessing biological effects of pollutants in non-marine aquatic ecosystems in Korea.

这项研究的目的是评估韩国淡水，咸淡水和海洋水体中附生硅藻组合的生物多样性，以及评估环境和人为因素对诸如脂质体的数量和生物体积以及硅藻的形变等参数的影响。人为影响的预警措施。从31个地点（14个淡水，10个微咸水和7个海洋）收集了硅藻样品，其中每种水类型的受影响地点（上游）和受影响地点（下游）都较少。我们的研究结果显示，与物种影响程度相比，受影响程度较小的地点的植物周围硅藻的丰度和生物多样性要高于淡水和河口地点的受影响地区而不是海洋地点的社区的物种丰富度，香农指数，细胞计数和生物量。在淡水中发现了84种硅藻，在微咸水中为80，在海水中为40。与受影响地点的硅藻相比，受影响程度较小的淡水，微咸和海洋地点的硅藻脂质体较少（生物量也较小），并且致畸壳的百分比较低，并且在社区中显示出更多的流动形式。主成分分析（PCA）还显示，由于脂质体的存在（数量和生物体积均较高）和硅藻壳的畸形，影响部位与受影响部位之间的分离明显。皮尔逊相关分析表明，脂质体诱导和畸变与金属（镉，钴，铬，铜，铁，铅和锌）和养分（总磷和总氮）呈正相关，而与盐度，溶解氧呈负相关。 ，悬浮的溶质和pH值。生命形式，