Skip to main content

Table 2 Mean biomass of epibiota (mg AFDW) relative to biomass (100 g FW) of S. muticum and H. siliquosa ±S.E. × present without biomass (<5 mg AFDW/100 g FW alga)

From: Epibiota communities of the introduced and indigenous macroalgal relatives Sargassum muticum and Halidrys siliquosa in Limfjorden (Denmark)

Sargassum muticum

Halidrys siliquosa

May (n=4)

Jun (n=5)

Jul (n=5)

Aug (n=5)

Sep (n=5)

Nov (n=6)

Jan (n=5)

May (n=4)

Jun (n=5)

Jul (n=6)

Aug (n=5)

Sep (n=5)

Nov (n=5)

Jan (n=5)

Mean algal weight (g FW) ± S.E.

37.1±0.0

77.3±19.1

217.3±21.4

145.4±27.5

12.3±3.4

22.9±2.2

12.1±0.58

65.6±12.3

74.9±16.1

72.5±16.0

165.0±36.0

48.9±17.4

121.6±41.7

102.5±7.1

Taxon

AFDW a (% of WW)

Porifera (Calcarea & Demospongiae)

1,582±794

296±171

153±142

10±10

544±61

×

36±4

107±10

678±37

18±2

-

×

21±2

×

Leucosolenia spp.

10.7

26±26

25±16

-

×

×

×

-

-

×

×

-

×

×

-

Halichondria panicea Pallas

10.7

507±226

248±170

65±55

9±9

44±6

×

-

24±3

667±37

16±2

-

×

21±2

×

Haliclona oculata Pallas

10.7

1,049±949

22±12

87±87

×

500±62

×

36±4

83±10

9±1

-

-

-

-

×

Cnidaria (Hydrozoa & Anthozoa)

9±4

53±30

×

91±45

×

336±15

67±4

24±2

76±4

8±1

×

107±6

38±3

9±1

Obelia spp.

7.3 b

8±4

53±30

×

×

×

313±13

67±4

24±2

76±4

8±1

×

15±2

38±3

6±0

Sagartia spp.

14.3

×

-

×

91±45

×

23±2

-

-

-

-

-

91±7

-

×

Nematoda

-

×

×

×

×

×

×

×

×

×

×

-

×

-

×

Annelida (Polychaeta)

81±28

32±4

11±2

241±51

109±4

179±4

62±4

81±3

30±3

10±0

37±2

113±8

10±1

6±1

Aphroditidae spp.

17.1

20±7

15±4

6±1

10±5

20±2

42±1

19±1

×

×

6±0

×

-

×

×

Nereidae spp.

17.1

57±19

12±3

×

79±20

31±2

35±3

31±4

35±2

7±0

×

22±1

13±0

×

5±1

Phyllodocidae spp.

17.1

-

-

×

×

-

×

-

-

-

-

-

-

×

-

Syllidae spp.

17.1

-

-

-

-

-

×

-

×

-

-

-

-

-

-

Serpulidae spp.

7.5 b

×

×

×

151±52

57±3

99±4

12±2

39±4

21±2

-

14±1

98±8

8±1

-

Polychaeta (other)

17.1

×

×

-

-

-

×

-

×

-

-

-

×

-

-

Arthropoda (Crustacea)

81±31

639±420

460±419

1,060±277

2,774±251

111±11

309±28

189±13

20±1

869±61

322±13

232±14

279±8

30±3

Ostracoda spp.

-

-

×

×

-

-

-

-

×

-

×

-

-

-

-

Praunus inermis Rathke

15.5

-

×

×

×

-

-

-

-

×

10±0

×

-

-

-

Praunus flexuosus Müller

15.5

-

-

×

-

9±1

-

-

-

-

-

28±3

×

-

×

Idotea baltica Pallas

14.2

-

×

×

-

-

-

-

×

×

-

-

-

-

-

Iphimedia spp.

16.0

×

×

10±3

40±22

×

-

×

-

6±0

16±1

10±0

×

×

-

Gammaridae spp.

16.0

×

×

×

×

-

×

-

×

×

×

×

-

×

-

Ampithoidae spp.

16.0

-

-

-

×

16±2

×

-

-

-

-

×

-

×

-

Corophium spp.

16.0

22±12

×

10±2

×

×

5±1

×

5±0

×

17±0

×

10±1

×

×

Jassa falcata Montagu

16.0

-

×

×

10±10

-

-

-

-

×

6±0

×

-

×

×

Phtisica marina Slabber

16.0

-

×

×

×

-

-

-

-

×

×

×

-

-

-

Amphipoda (other)

16.0

×

-

×

9±7

-

×

-

-

×

6±1

×

×

-

-

Palaemon adspersus Rathke

16.0

-

-

-

35±35

10±1

37±4

235±29

-

-

-

×

24±3

23±2

28±3

Macropodia rostrata L.

16.5

52±21

16±16

-

336±59

401±22

-

68±8

23±2

10±1

48±2

86±2

197±14

213±7

-

Carcinus maenas L.

13.8

-

613±423

423±422

620±229

2,320±260

63±7

-

156±13

-

761±61

191±14

-

39±2

-

Malacostraca (other)

-

-

-

×

-

10±1

-

-

-

-

-

-

-

-

-

Mollusca (Gastropoda & Bivalvia)

1,401±701

80±79

48±26

14±9

1,605±201

316±21

135±12

31±3

241±16

212±23

75±3

25±3

40±4

56±7

Tectura sp.

7.5

-

-

-

×

-

-

-

-

×

×

×

-

-

-

Gibbula sp.

7.5

8±8

-

×

6±6

-

94±8

102±13

27±3

9±1

7±1

32±2

24±3

-

-

Littorina sp.

7.5

1,378±707

78±78

23±23

-

1,605±201

177±22

-

-

227±15

183±23

41±4

-

36±5

56±7

Rissoa sp.

7.5

×

×

6±1

×

-

-

-

×

×

×

×

-

-

-

Bittium reticulatum Da Costa

7.5

×

×

-

×

-

-

-

-

×

×

-

×

-

×

Opistobranchia spp.

17.2

-

-

×

-

-

-

-

×

-

×

-

-

×

-

Gastropoda (others)

7.5

-

-

×

×

-

-

-

-

-

-

×

-

-

-

Mytilidae spp.

5.8

10±5

×

13±3

×

-

45±3

33±4

×

×

16±0

-

×

-

-

Cardiidae spp.

5.8

×

-

×

×

-

-

-

-

-

×

-

-

-

-

Bivalvia (others)

5.8

×

-

×

5±3

-

-

-

-

-

×

×

-

-

-

Bryozoa (Gymnolaemata)

-

×

×

×

×

-

×

-

×

×

×

-

×

-

-

Electra pilosa L.

7.3

×

×

×

×

-

×

-

×

×

×

-

×

-

-

Echinodermata (Asteriodea & Echinoidae)

1,871±1860

117±56

45±23

193±51

1,570±118

467±49

120±13

-

64±7

59±4

28±2

5±1

10±1

14±1

Asterias rubens L.

11.2

1,719±1708

65±34

14±9

95±61

1,030±117

57±6

12±1

-

64±7

57±4

9±1

5±1

10±1

×

Psammechinus miliaris Müller

3.5

152±152

52±48

31±19

98±25

540±67

410±50

108±12

-

-

×

20±2

×

×

11±1

Chordata (Urochordata)

1,951±172

434±204

165±60

913±232

3,485±153

2,140±69

3,680±282

16±2

312±23

38±2

108±3

48±4

740±27

484±32

Clavelina lepadiformis Müller

2.5

-

52±27

13±9

527±153

21±2

-

-

×

6±0

9±1

80±3

13±1

×

-

Ascidiella aspersa Müller

2.5

-

209±187

×

204±90

1,668±107

946±26

2,218±143

-

×

-

14±1

30±4

714±28

406±25

Styela clava Herdman

2.5

1,949±174

161±159

149±63

182±108

1,796±75

1,191±61

1,462±145

×

201±25

18±2

13±2

5±0

22±1

78±10

Botryllus schlosseri Pallas

2.5

×

12±10

×

×

×

×

-

16±2

102±8

11±1

×

-

×

-

Ascidiacea (other)

2.5

×

-

-

-

-

×

-

-

-

-

×

-

-

-

Chordata (Euchordata, Osteichthyes)

16.3 c

-

-

-

67±61

-

-

-

×

-

-

-

-

16±1

-

Chlorophyta, Rhodophyta, Phaeophyta

331±108

34±17

×

5±4

×

15±1

×

114±7

×

24±2

9±1

×

×

×

Cladophora sp.

2.8 d

×

-

×

-

-

-

-

-

-

×

-

-

×

-

Callithamnion sp.

2.8 d

-

×

-

-

-

-

×

-

×

-

-

-

×

-

Ceramium sp.

2.8 d

×

×

×

×

×

×

-

-

×

×

9±1

×

×

×

Polysphonia sp.

2.8 d

11±3

26±18

×

×

-

×

-

10±1

×

20±2

-

-

×

×

Rhodophyta (other)

2.8 d

-

-

×

-

-

15±1

-

-

×

×

-

-

-

×

Ectocarpus sp.

2.8d

308±107

×

×

-

-

-

-

104±6

×

×

-

×

-

-

Phaeophyta (other)

2.8d

12±12

×

×

-

-

-

-

×

-

-

×

-

-

-

Total

7,308±1810

1,685±685

887±606

2,594±442

10,092±400

3,566±110

4,409±314

564±21

1,425±52

1,238±61

580±13

530±21

1,154±21

601±28

  1. aFrom Ricciari and Bourget (1998)
  2. bValue for shelled Gastropoda
  3. cValues for Pungitius pungitius L. derived from Lappalainen and Kangas (1975)
  4. dOwn unpublished data for Ceramium nodolosum (Lightf.) Ducluz
Back to article page

Helgoland Marine Research

ISSN: 1438-3888

Contact us