Table 2 Average and maximum value (in parenthesis) of density for both copepod size fractions and their relative contribution to total density during summer in Subantarctic (Subant.), Antarctic (Antar.) waters and Polar Front

Density (ind L⁻¹)

 <300-μm fraction

0.715 (2.04)

0.019 (0.14)

4.239 (9.71)

4.375 (8.054)

0.868 (3.82)

2.740 (6.88)

0.031 (0.29)

 >300-μm fraction

0.170 (1.00)

0.006 (0.05)

0.741 (2.99)

0.557 (1.098)

0.002 (0.02)

0.026 (0.06)

0.006 (0.04)

 All

0.885 (3.04)

0.024 (0.19)

4.980 (12.7)

4.931 (8.991)

0.870 (3.82)

2.766 (6.93)

0.036 (0.29)

Relative contribution

 <300-μm fraction

79%

75%

83%

91%

97%

99%

50%

 >300-μm fraction

21%

25%

17%

9%

3%

1%

50%

Density (ind L⁻¹)

 Nauplii

0.65 (2.04)

0.01 (0.09)

2.61 (4.98)

3.13 (5.12)

0.76 (3.20)

2.39 (6.38)

0.03 (0.28)

 Oithona similis

0.08 (0.27)

0.001 (0.01)

0.97 (2.46)

0.76 (1.23)

0.18 (0.61)

0.25 (0.46)

0.001 (0.01)

 Microsetella norvegica

0.03 (0.09)

0.001 (0.01)

0.01 (0.03)

0.06 (0.20)

–

0.07 (0.15)

–

 Oncaea curvata

0.01 (0.02)

–

–

–

0.004 (0.04)

–

–

 Rhincalanus gigas

0.002 (0.01)

–

–

–

–

–

–

 Calanus simillimus

0.07 (0.20)

–

0.71 (3.94)

0.51 (1.05)

0.001 (0.004)

0.01 (0.04)

–

 Calanoides acutus

0.01 (0.07)

0.001 (0.004)

0.62 (2.07)

0.40 (1.41)

0.001 (0.004)

0.01 (0.06)

–

 Ctenocalanus citer

0.002 (0.01)

–

–

–

–

–

0.003 (0.02)

 Metridia gerlachei

0.01 (0.05)

–

0.03 (0.08)

0.04 (0.16)

–

0.01 (0.05)

–

 Clausocalanus laticeps

1E−04 (0.01)

–

–

–

–

–

–

 Sapphirina sp

–

–

0.001(0.004)

–

–

–

–

 Paraeuchaeta antartica

–

–

–

0.003 (0.012)

–

–

–

 Subeucalanus longiceps

0.001 (0.01)

–

–

–

–

–

–