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Illumina MiSeq Analysis and Comparison of Freshwater Microalgal Communities on Ulleungdo and Dokdo Islands


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Fig. 1.

Rarefaction curves for operational taxonomic units (OTUs) from the Seonginbong, Dongdo, and Seodo samples. (a) Shannon, (b) Simpson, and (c) Chao1 indexes. (d) UPGMA tree based on the community structures of Seonginbong, Dongdo, and Seodo. Seonginbong (red line), Dongdo (blue line), and Seodo (orange line).
Rarefaction curves for operational taxonomic units (OTUs) from the Seonginbong, Dongdo, and Seodo samples. (a) Shannon, (b) Simpson, and (c) Chao1 indexes. (d) UPGMA tree based on the community structures of Seonginbong, Dongdo, and Seodo. Seonginbong (red line), Dongdo (blue line), and Seodo (orange line).

Fig. 2.

Taxonomic composition of the eukaryotic microbial phyla on Seonginbong, Dongdo, and Seodo.
Taxonomic composition of the eukaryotic microbial phyla on Seonginbong, Dongdo, and Seodo.

Fig. 3.

Taxonomic composition of the microalgal classes on Seonginbong, Dongdo, and Seodo.
Taxonomic composition of the microalgal classes on Seonginbong, Dongdo, and Seodo.

Fig. 4.

Molecular phylogenetic analysis using a maximum likelihood (ML) tree. The boundary between phyla is marked with a yellow box, and the boundaries between classes are marked with purple boxes. Five classes are displayed about the species names in the phylogenetic tree. The dominant species in each sample is marked with a colored box (Seonginbong: red; Dongdo: blue; Seodo: green). The class of each group is presented at the edge (Bacillariophyceae; red, Coscinodiscophyceae; yellow, Chlorophyceae; blue, Trebouxiophyceae; green and Ulvophyceae; purple).
Molecular phylogenetic analysis using a maximum likelihood (ML) tree. The boundary between phyla is marked with a yellow box, and the boundaries between classes are marked with purple boxes. Five classes are displayed about the species names in the phylogenetic tree. The dominant species in each sample is marked with a colored box (Seonginbong: red; Dongdo: blue; Seodo: green). The class of each group is presented at the edge (Bacillariophyceae; red, Coscinodiscophyceae; yellow, Chlorophyceae; blue, Trebouxiophyceae; green and Ulvophyceae; purple).

Number of eukaryotic microalgal taxa observed in the Seonginbong, Dongdo, and Seodo samples.

SeonginbongDongdoSeodo
c1uc2c1uc2c1uc2
Phylum165 646125 27330 911258 699164 678110 709
Class128 160162 75923 011266 599144 662130 725
Order99 964190 95522 791266 819123 329152 058
Family96 751194 16822 751266 859120 206155 181
Genus92 628198 29122 707266 903110 674164 713
Species84 154206 76517 930271 68097 541177 846

Relative abundance of eukaryotic microalgal genera in the Seonginbong, Dongdo, and Seodo samples.

TaxonomySeonginbongDorgdoSeodo
PhylumClassOrderFamilyGenus%1Fr2%1Fr2%1Fr2
BacillariophytaBacillariophyceae0.0000.0000.862 363
BacillariophytaBacillariophyceaeAchnanthidium0.0000.00020.7657 168
BacillariophytaBacillariophyceaeAchnanthaceaeAchnanthes0.0000.0001.544 239
BacillariophytaBacillariophyceaeBacillariaceaeHantzschia0.154230.0000.000
BacillariophytaBacillariophyceaeBacillariaceaeNitzschia0.0000.0003.268 974
BacillariophytaBacillariophyceaeNaviculalesAmphipleuraceae-0.0000.0000.23645
BacillariophytaBacillariophyceaeNaviculalesDiadesmidaceaeDiadesmis0.0000.0002.155 922
BacillariophytaBacillariophyceaeNaviculalesDiadesmidaceaeLuticola0.0000.0070.23629
BacillariophytaBacillariophyceaeNaviculalesNaviculaceaeNavicula0.0000.0000.29802
BacillariophytaBacillariophyceaeNaviculalesPinnulariaceaePinnularia0.092560.0000.000
BacillariophytaBacillariophyceaeNaviculalesSellaphoraceaeSellaphora0.0000.0003.128 579
BacillariophytaBacillariophyceaeNaviculalesStauroneidaceaeStauroneis1.163 3790.0000.000
BacillariophytaBacillariophyceaeThalassiophysalesCatenulaceaeAmphora0.0000.0000.12329
BacillariophytaCoscinodiscophyceaeMelosiralesStephanopyxidaceaeStephanopyxis0.0000.0003.148 660
BacillariophytaCoscinodiscophyceaeParalialesParalia0.0000.0000.13354
Chlorophyta-0.0000.02650.000
ChlorophytaChlorodendrales-0.0000.01210.000
ChlorophytaChlorophyceae-0.03910.00130.621708
ChlorophytaChlorophyceaeChlamydomonadales-1.484 3080.092490.000
ChlorophytaChlorophyceaeChlamydomonadalesActinochloris0.0000.01220.000
ChlorophytaChlorophyceaeChlamydomonadalesEttlia0.621 7930.0000.000
ChlorophytaChlorophyceaeChlamydomonadalesSpongiochloris0.441 2670.0000.000
ChlorophytaChlorophyceaeChlamydomonadalesCharaciochloridaceaeCharaciochloris0.3410020.0000.000
ChlorophytaChlorophyceaeChlamydomonadalesChlamydomonadaceae-0.02500.0000.000
ChlorophytaChlorophyceaeChlamydomonadalesChlamydomonadaceaeChlamydomonas0.3510260.0000.000
ChlorophytaChlorophyceaeChlamydomonadalesChlamydomonadaceaeChloromonas0.01200.02480.000
ChlorophytaChlorophyceaeChlamydomonadalesChlorococcaceaeChlorococcum1.534 43718.4653 4630.000
ChlorophytaChlorophyceaeChlorosarcinalesChlorosarcinopsis1.293 7610.0000.000
ChlorophytaChlorophyceaeSphaeropleales-1.474 2710.0020.000
ChlorophytaChlorophyceaeSphaeroplealesBracteacoccus1.895 4900.0000.000
ChlorophytaChlorophyceaeSphaeroplealesDictyochloris0.123350.0000.000
ChlorophytaChlorophyceaeSphaeroplealesScenedesmaceaeCoelastrella0.02640.0000.22597
ChlorophytaChlorophyceaeSphaeroplealesScenedesmaceaeDesmodesmus0.061790.0000.000
ChlorophytaTreb ouxiophyceae-0.041020.0000.000
ChlorophytaTreb ouxiophyceaeMyrmecia0.5114870.0000.12329
ChlorophytaTreb ouxiophyceaeWatanabea0.01350.0000.000
ChlorophytaTreb ouxiophyceaeCoccomyxaceaeCoccomyxa0.01230.0000.000
ChlorophytaTreb ouxiophyceaeChlorellales-0.0000.0070.000
ChlorophytaTreb ouxiophyceaeChlorellalesChlorellaceae-0.0618263.78184 7000.06162
ChlorophytaTreb ouxiophyceaeChlorellalesChlorellaceaeAuxenochlorella0.349990.0020.000
ChlorophytaTreb ouxiophyceaeChlorellalesChlorellaceaeChlorella0.041020.0000.000
ChlorophytaTreb ouxiophyceaeChlorellalesChlorellaceaeHeveochlorella0.0000.00120.000
ChlorophytaTreb ouxiophyceaeChlorellalesChlorellaceaeLobosphaera0.00140.0000.000
ChlorophytaTreb ouxiophyceaeChlorellalesChlorellaceaePseudochlorella0.133921.133 2850.000
ChlorophytaTreb ouxiophyceaeCtenocladalesCtenocladaceaeLeptosira0.216040.0000.000
ChlorophytaTreb ouxiophyceaeMicrothamniales-0.092720.0000.000
ChlorophytaTreb ouxiophyceaeMicrothamnialesDictyochlompsis0.02510.0000.000
ChlorophytaTreb ouxiophyceaeMicrothamnialesStichococcus0.0000.02480.000
ChlorophytaUlvophyceaeUlotrichales-0.5516050.0000.000
ChlorophytaUlvophyceaeUlvales-0.0000.0000.05136

Illumina MiSeq results for the operational taxonomic units (OTUs) and statistical analysis.

SeonginbongDongdoSeodo
Total reads580 853534 141469 920
Validated reads290 919289 610275 387
Mean read length (bp)408.1416.7412.54
Maximum read length (bp)418418408
Number of OTUs1834203182
Chao12834203.75182
Shannon36.7222.0385.118
Simpson40.96550.55690.9174
Goods Coverage510.99991

Relative abundance of eukaryotic microalgal families in the Seonginbong, Dongdo, and Seodo samples.

TaxonomySeonginbongDongdoSeodo
PhylumClassOrderFamily%1Fr2%1Fr2%1Fr2
BacillariophytaBacillariophyceae0.0000.00021.6259 531
BacillariophytaBacillariophyceaeAchnanthaceae0.0000.0001.544 239
BacillariophytaBacillariophyceaeBacillariaceae0.154230.0003.268 974
BacillariophytaBacillariophyceaeNaviculalesAmphipleuraceae0.0000.0000.23645
BacillariophytaBacillariophyceaeNaviculalesDiadesmidaceae0.0000.0072.386 551
BacillariophytaBacillariophyceaeNaviculalesNaviculaceae0.0000.0000.29802
BacillariophytaBacillariophyceaeNaviculalesPinnulariaceae0.092560.0000.000
BacillariophytaBacillariophyceaeNaviculalesSellaphoraceae0.0000.0003.128 579
BacillariophytaBacillariophyceaeNaviculalesStauroneidaceae1.163 3790.0000.000
BacillariophytaBacillariophyceaeThalassiophysalesCatenulaceae0.0000.0000.12329
BacillariophytaCoscinodiscophyceaeMelosiralesStephanopyxidaceae0.0000.0003.148 660
BacillariophytaCoscinodiscophyceaeParaliales0.0000.0000.13354
Chlorophyta0.0000.02650.000
ChlorophytaChlorodendrales0.0000.01210.000
ChlorophytaChlorophyceae0.03910.00130.621 708
ChlorophytaChlorophyceaeChlamydomonadales2.537 3680.092710.000
ChlorophytaChlorophyceaeChlamydomonadalesCharaciochloridaceae0.341 0020.0000.000
ChlorophytaChlorophyceaeChlamydomonadalesChlamydomonadaceae0.381 0960.02480.000
ChlorophytaChlorophyceaeChlamydomonadalesChlorococcaceae1.534 43718.4653 4630.000
ChlorophytaChlorophyceaeChlorosarcinales1.293 7610.0000.000
ChlorophytaChlorophyceaeSphaeropleales3.4710 0960.0020.000
ChlorophytaChlorophyceaeSphaeroplealesScenedesmaceae0.082430.0000.22597
ChlorophytaTrebouxiophyceae0.561 6240.0000.12329
ChlorophytaTrebouxiophyceaeCoccomyxaceae0.01230.0000.000
ChlorophytaTrebouxiophyceaeChlorellales0.0000.0070.000
ChlorophytaTrebouxiophyceaeChlorellalesChlorellaceae0.581 68964.91187 9990.06162
ChlorophytaTrebouxiophyceaeCtenocladalesCtenocladaceae0.216040.0000.000
ChlorophytaTrebouxiophyceaeMicrothamniales0.113230.02480.000
ChlorophytaUlvophyceaeUlotrichales0.551 6050.0000.000
ChlorophytaUlvophyceaeUlvales0.0000.0000.05136
eISSN:
2544-4646
Language:
English
Publication timeframe:
4 times per year
Journal Subjects:
Life Sciences, Microbiology and Virology