Table 2 Mean abundance (ind 100 m−3 ± SD) of five genera of juvenile holoplanktonic molluscs in five strata (m) of the water column during two sampling periods
From: Vertical segregation of holoplanktonic molluscs in the epipelagic layer, southern Gulf of Mexico
Stratum | Cavolinia | Diacavolinia | Oxygyrus | Diacria | Clio |
|---|---|---|---|---|---|
May | |||||
0–6 | 114.1 ± 34.7 | 8.8 ± 3.0 | 2.1 ± 0.5 | 0.0 | 0.0 |
6–12 | 118.5 ± 22.5 | 11.9 ± 2.1 | 3.8 ± 0.9 | 0.2 ± 0.1 | 0.0 |
12–18 | 175.1 ± 19.3 | 45.2 ± 10.5 | 4.4 ± 0.9 | 3.4 ± 1.0 | 0.4 ± 0.1 |
45–55 | 83.5 ± 14.5 | 2.8 ± 0.5 | 1.2 ± 0.2 | 6.7 ± 1.1 | 0.0 |
95–105 | 20.1 ± 2.1 | 3.6 ± 0.8 | 0.2 ± 0.1 | 16.4 ± 2.3 | 10.0 ± 1.4 |
November | |||||
0–6 | 19.4 ± 3.3 | 9.2 ± 2.0 | – | 0.0 | 0.0 |
6–12 | 59.2 ± 15.2 | 32.6 ± 11.7 | – | 0.0 | 0.0 |
12–18 | 107.4 ± 12.3 | 50.5 ± 11.2 | – | 1.1 ± 0.4 | 0.0 |
45–55 | 21.1 ± 2.3 | 2.9 ± 0.4 | – | 3.3 ± 0.3 | 4.5 ± 1.3 |
95–105 | 10.4 ± 1.4 | 0.6 ± 0.1 | – | 9.6 ± 2.6 | 7.2 ± 2.0 |