Table 2 Percentage of frequency of occurrence (I O), numerical abundance (I N) and biomass (I W) of meiofauna groups found in the sediment cores (8.80 cm²) per season
From: Meiofauna as food source for small-sized demersal fish in the southern North Sea
May 09 | Jul 09 | Oct 09 | Jan 10 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
I O (%) | I N (%) | I W (%) | I O (%) | I N (%) | I W (%) | I O (%) | I N (%) | I W (%) | I O (%) | I N (%) | I W (%) | |
Harpacticoids | 55.5 | 1.8 | 46.5 | 55.2 | 3.9 | 92.2 | 57.1 | 1.2 | 57.9 | 46.5 | 3.8 | 66.5 |
Nematodes | 10.0 | 96.2 | 2.2 | 7.6 | 93.9 | 2.7 | 9.9 | 97.3 | 2.4 | 9.4 | 94.2 | 4.3 |
Polychaetes | 10.0 | 0.5 | 42.5 | 6.8 | 0.3 | <0.1 | 8.7 | 0.3 | 37.7 | 7.3 | 0.1 | 24.2 |
Bivalves | 8.7 | 0.5 | 0.4 | 7.2 | 0.3 | 0.6 | 9.9 | 0.6 | 0.3 | 9.3 | 0.1 | 1.1 |
Gastropods | – | – | – | 2.4 | 0.2 | <0.1 | – | – | – | 1.1 | <0.1 | 1.2 |
Ostracods | 0.6 | 0.1 | <0.1 | – | – | – | 1.1 | <0.1 | 0.2 | 6.3 | <0.1 | 0.3 |
Echinoderms | – | – | 5.2 | <0.1 | 0.1 | – | – | – | 3.1 | <0.1 | 0.2 | |
Kinorhynchs | 2.5 | 0.6 | 0.1 | 6.5 | <0.1 | 0.1 | 7.7 | 0.6 | 0.4 | 6.3 | <0.1 | 0.4 |
Harpacticoids copepodites | – | – | – | 8.0 | 1.1 | 3.4 | 2.2 | <0.1 | 0.7 | <0.1 | 0.2 | 1.5 |
Others | 14.6 | 0.9 | 8.0 | 9.2 | 0.3 | 1.0 | 5.6 | <0.1 | 0.2 | 10.9 | 0.4 | 2.3 |
∑ of cores studied | 18 | 22 | 9 | 20 | ||||||||