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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

From: Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer

  Summer 2000 Summer 2001 Summer 2003
  Subant. waters (n: 10) Antar. waters (n: 9) Subant. waters (n: 6) Polar Front (n: 4) Antar. waters (n: 11) Subant. waters (n: 4) Antar. waters (n: 12)
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)
  1. All the species recorded are shown