Table 4 Density of numerically dominant taxa (top 5th in rank) in the three study reaches at both seasons (individuals per 0.25 m2).

From: Effects of sediment replenishment on riverbed environments and macroinvertebrate assemblages downstream of a dam

Reach

Rank

March

August

Taxa

Density

Cummulative % of total numbers of individuals

FFG

Life type

Taxa

Density

Cummulative % of total numbers of individuals

FFG

Life type

UD

1

Orthocladiinae gen. sp.

488.2 ± 117.4

30.8

CG, SC

AT, BR

Chironominae gen. sp.

144.7 ± 85.8

16.0

CG, CF

AT, BR*

2

Propappus volki

306.4 ± 16.1

50.1

CG

BR

Orthocladiinae gen. sp.

138.7 ± 42.2

31.3

CG, SC

AT, BR*

3

Baetiella japonica

230.3 ± 0.9

64.6

CG, SC

AT

Propappus volki

64.3 ± 54.2

38.4

CG

BR*

4

Diamesinae gen. sp.

113.5 ± 21.0

71.8

CG, SC

BR

Naididae gen. sp.

62.6 ± 54.6

45.3

CG

BR**

5

Drunella sachariensis

87.6 ± 0.0

77.3

PR

CR

Antocha spp.

51.4 ± 6.6

50.9

CG

AT

DD

1

Orthocladiinae gen. sp.

3489.6 ± 801.5

38.7

CG, SC

AT, BR*

Glossosoma sp.

623.2 ± 620.6

12.0

SC

CB

2

Uracanchella punctisetae

1579.8 ± 33.2

56.2

CG, SC

CR

Ephemerella sp.

536.3 ± 425.7

22.2

CG, SC

CR

3

Baetiella japonica

1047.3 ± 21.7

67.8

CG, SC

AT

Orthocladiinae gen. sp.

353.9 ± 269.6

29.0

CG, CF

AT, BR*

4

Naididae gen. sp.

382.2 ± 1.0

72.0

CG

BR**

Chironominae gen. sp.

339.4 ± 57.3

35.5

CG, SC

AT, BR*

5

Hydropsyche orientalis

254.8 ± 294.3

74.9

CF

NS

Hydropsyche orientalis

307.8 ± 231.2

 

CF

NS

TR

1

Orthocladiinae gen. sp.

776.3 ± 233.0

27.2

CG, SC

AT, BR*

Chironominae gen. sp.

574.4 ± 70.1

20.8

CG, CF

AT, BR*

2

Baetiella japonica

306.9 ± 48.2

37.9

CG, SC

AT

Glossosoma sp.

387.6 ± 181.6

34.9

SC

CB

3

Naididae gen. sp.

269.2 ± 278.0

47.3

CG

BR**

Orthocladiinae gen. sp.

231.9 ± 117.3

43.3

CG, SC

AT, BR*

4

Propappus volki

230.2 ± 393.8

55.4

CG

BR*

Acarina fam. gen. sp.

187 ± 36.5

50.0

PR

CR

5

Drunella spp.

190.4 ± 69.7

62.0

PR

CR

Antocha spp.

155.8 ± 72

55.7

CG

AT

  1. Data are shown as mean ± 1SD (n).
  2. FFG functional feeding groups. Life forms follow Kawai and Tanida (2005); AT attachers, BR* burrowers in deposit sediments, BR** burrowers in periphytic mat on substrata, CR Crawlers, NT net spinners, and CB case bearing caddisflies.
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