Table 1 Phytoplankton succession in Lake Datong

1960 Winter

5 domain

2,180,000 ind/L

Cyanobacteria: 69.7%

[53]

1997

8 domain, 64 genus

1,780,000 ind/L

[54]

2005 Spring

6 domain, 12 genus

1,724,000 ind/L; 3.156 mg/L

[55]

2008–2009

7 domain, 54 genus, 98 species

1,640,000 ind/L Summer;

1,710,000 ind/L winter

Average value: 2.045

Highest in winter: 2.69

Lowest in summer: 1.26

Average value: 1.037

Highest in winter: 1.27

Lowest in summer: 0.69

Average value: 3.11

Highest in spring: 4.55

Lowest in autumn: 2.25

[56]

2011 Summer

5 domain, 29 species

8,560,000 ind/L

Cyanobacteria: 65.34%

[57]

2011–2012

1,850,000–61,000,000 ind/L

Cryptophyta: 50–90%

[58]

2013–2014

7 domain, 80 species

6.58 ± 0.66 × 10⁴ ind/L; 0.16 ± 0.05 mg/L

Euglenophyta: Euglena polymorpha; Cryptophyta: Cryptomonas ovata, Chroomonas acuta, Bacillariophyta: Cyclotlla caclotella; Chlorophyta: Chlorella vulgaris, Chlamydomonas incerta, Scenedesmus quadricauda

Average value: 1.24

Highest in August: 2.08

Lowest in November: 0.72

Average value: 0.68

Highest in May: 0.86

Lowest in November: 0.31

Average value: 0.75

Highest in August: 1.15

Lowest in April: 0.38

[59]

2019 Summer

8 phylum, 197 species

1 020 765 ind./L; 0.871 mg/L

Chlorophyta

3.241–3.806, Average value: 3.549

0.4463–0.587, Average value: 0.555

4.093–6.792, Average value: 6.773

–