Table 1 Quantification of the sieving strategy effect on commonly used diversity measures, average macrobenthic density (All) and taxon densities (A Amphipoda, B Bivalvia, C Cephalochordata, E Echinodermata, O Oligochaeta, P Polychaeta) (ind. m−2)
AM | N1 | N2 | OG | ES | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
F | A | RL | F | A | RL | F | A | RL | F | A | RL | F | A | RL | |
S | 13 | 12 | 12 | 7 | 6 | 9 | 8> | 6 | 30 | 7 | 6 | 24 | 2 | 2 | 0 |
N1 | 5.9 | 5.4 | 8 | 5.0 | 4.6 | 7 | 5.2> | 3.4 | 35 | 4.8 | 4.4 | 9 | 1.1 | 1.1 | 0 |
N2 | 4.1 | 3.8 | 7 | 4.1 | 3.8 | 8 | 4.0> | 2.6 | 35 | 4.0 | 3.7 | 9 | 1.0 | 1.0 | 0 |
N∞ | 2.7 | 2.5 | 7 | 2.8 | 2.5 | 11 | 2.5> | 1.9 | 27 | 2.9 | 2.5 | 15 | 1.0 | 1.0 | 0 |
H′ | 2.5 | 2.4 | 3 | 2.3 | 2.2 | 6 | 2.4 > | 1.7 | 26 | 2.2 | 2.1 | 4 | 0.1 | 0.1 | 6 |
ES 100 | 11 | 10 | 7 | 7 | 6 | 8 | 8> | 6 | 28 | 7 | 5.6 | 20 | 2 | 2 | 2 |
J′ | 0.6 | 0.7 | −1 | 0.8 | 0.8 | 2 | 0.8> | 0.7 | 10 | 0.8 | 0.9 | −17 | 0.1 | 0.1 | 4 |
All | 1370 | 945 | 31 | 355> | 179 | 50 | 605 | 335 | 40 | 756> | 164 | 78 | 2975> | 2263 | 24 |
A | – | – | – | 121> | 58 | 52 | 52> | 35 | 32 | – | – | – | 39 | 25 | 35 |
B | 456 | 450 | 1 | – | – | – | – | – | – | – | – | – | – | – | – |
C | – | – | – | – | – | – | – | – | – | 10 | 4 | 60 | – | – | – |
E | 14 | 8 | 43 | – | – | – | – | – | – | 35 | 23 | 33 | – | – | – |
O | – | – | – | – | – | – | – | – | – | 31 | 0 | 100 | – | – | – |
P | 895> | 483 | 46 | 226> | 113 | 50 | 538> | 290 | 46 | 674> | 129 | 81 | 2932> | 2236 | 24 |