Diatom distributions in Pearl River were investigated, and on this basis, its significance for the water quality evaluation and development of diatom taxa was discussed as well. Totally, 54 water samples were collected in 34 sites along Pearl River basin and South Sea in June and September, 2011. Diatom related indices were calculated among the samples, cluster analysis and linear regression were performed after the diatoms were analyzed qualitatively and quantitatively. The genus and the quantity of the diatoms in the water samples were subsequently investigated using scanning electron microscopy (SEM). With reference to diatom distribution, 105 types of diatoms were detected from 54 samples, among which 13 dominant species (dominancee”0.02) were found spreading Pearl River. The characteristics of the indices from Biological Diatom Index (IBD) and Diatom model affinity (DMA) showed the greatest similarity to the diatoms detected in the same site. Exploring the distribution of diatoms in Pearl River is useful for water quality evaluation and forensic practice.
Bio-indication, Distribution of diatom, Pearl River, Scanning electron microscopy, Water quality, Forensic medicine
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