Table 2 Means of WW, DW, and AFDW (in percent of the corresponding weight estimates from unpreserved samples ±95% CI; DW and AFDW are also given in percent of WW ±95% CI) in four macrofauna groups preserved in formalin (4%) or ethanol (70%) for 10, 21, and 90 days, respectively
| Ethanol (70 %) | Formalin (4 %) | 95% CI | |||||
|---|---|---|---|---|---|---|---|---|
10 days | 21 days | 90 days | 10 days | 21 days | 90 days |
|
| |
WW (% of WW from unpreserved samples = FW) | ||||||||
H. filiformis | 81.7 | 67.5 | 70.7 | 75.0 | 62.2 | 63.3 | ± | 10.0 |
H. diversicolor | — | 87.2 | 86.1 | — | 95.0 | 86.9 | ± | 6.6 |
Corophium sp. | 69.7 | 66.7 | 63.2 | 71.0 | 65.5 | 64.4 | ± | 6.2 |
Gammarus spp. | 79.0 | 76.3 | 73.3 | 75.6 | 69.4 | 71.9 | ± | 4.7 |
DW (% of DW from unpreserved samples) | ||||||||
H. filiformis | 76.6 | 56.3 | 63.8 | 69.2 | 55.1 | 53.2 | ± | 17.5 |
H. diversicolor | — | 81.3 | 82.3 | — | 88.7 | 83.8 | ± | 14.3 |
Corophium sp. | 69.2 | 64.6 | 62.1 | 70.5 | 60.0 | 60.3 | ± | 7.5 |
Gammarus spp. | 78.9 | 76.6 | 72.7 | 74.8 | 68.8 | 67.9 | ± | 5.4 |
DW (% of WW) | ||||||||
H. filiformis | 13.2 | 9.7 | 11.0 | 12.0 | 9.5 | 9.2 | ± | 3.0 |
H. diversicolor | — | 11.2 | 11.4 | — | 12.3 | 11.6 | ± | 2.1 |
Corophium sp. | 9.9 | 9.2 | 8.9 | 10.1 | 8.5 | 8.6 | ± | 1.1 |
Gammarus spp. | 20.6 | 20.0 | 19.9 | 19.5 | 17.9 | 17.7 | ± | 1.4 |
AFDW (% of AFDW from unpreserved samples) | ||||||||
H. filiformis | 72.7 | 61.8 | 57.3 | 74.9 | 64.8 | 56.7 | ± | 14.8 |
H. diversicolor | — | 70.4 | 65.1 | — | 79.7 | 67.1 | ± | 7.6 |
Corophium sp. | 61.9 | 54.6 | 52.6 | 71.5 | 64.3 | 65.0 | ± | 7.6 |
Gammarus spp. | 73.4 | 70.8 | 66.6 | 76.2 | 71.3 | 71.1 | ± | 5.7 |
AFDW (% of WW) | ||||||||
H. filiformis | 6.7 | 5.7 | 5.3 | 6.9 | 6.0 | 5.2 | ± | 1.4 |
H. diversicolor | — | 7.4 | 6.9 | — | 8.4 | 7.1 | ± | 0.8 |
Corophium sp. | 6.1 | 5.4 | 5.2 | 7.0 | 6.3 | 6.4 | ± | 0.8 |
Gammarus spp. | 13.2 | 12.7 | 12.0 | 13.7 | 12.8 | 12.8 | ± | 1.0 |