Table 4 Abundance (individuals 10 m− 2) of macroinvertebrates associated with a Macrocystis integrifolia bed, Lessonia trabeculata bed and patchily distributed L. trabeculata on a barren ground habitat off Chipana (mean ± SD)
Macrocystis integrifolia kelp bed | Lessonia trabeculata kelp bed | Lessonia trabeculata patches-barren ground | |||||
|---|---|---|---|---|---|---|---|
N | % | N | % | N | % | ||
Cnidaria | 45.3 | 29.4 | 2.1 | 1.7 | 8.1 | 11.8 | |
Anthozoa | Anemonia alicemartinae | 42.1 ± 55.2 | 27.4 | 2.1 ± 6.9 | 1.7 | 5.9 ± 16.1 | 8.6 |
Anthothoe chilensis | 3.2 ± 20.7 | 2.1 | 0.0 ± 0.0 | 0.0 | 2.2 ± 6.1 | 3.2 | |
Mollusca | 26.4 | 17.1 | 75.6 | 60.0 | 10.2 | 14.9 | |
Bivalvia | Aulacomya ater | 0.0 ± 0.0 | 0.0 | 69.6 ± 136.1 | 55.5 | 0.0 ± 0.0 | 0.0 |
Gastropoda | Concholepas concholepas | 0.16 ± 0.73 | 0.1 | 0.9 ± 4.8 | 0.7 | 1.2 ± 2.8 | 1.7 |
Crassilabrum crassilabrum | 2 ± 15.4 | 1.3 | 0.0 ± 0.0 | 0.0 | 0.0 ± 0.0 | 0.0 | |
Fissurella cumingi | 0.0 ± 0.0 | 0.0 | 0.0 ± 0.0 | 0.0 | 0.1 ± 0.5 | 0.1 | |
Fissurella latimarginata | 0.9 ± 2.8 | 0.6 | 0.2 ± 0.9 | 0.2 | 1.9 ± 6.1 | 2.8 | |
Priene rude | 0.0 ± 0.0 | 0.0 | 0.2 ± 1.4 | 0.2 | 2.7 ± 11.8 | 3.9 | |
Tegula atra | 0.0 ± 0.0 | 0.0 | 0.2 ± 0.7 | 0.2 | 1.4 ± 6.2 | 2.0 | |
Tegula tridentata | 23.3 ± 102.9 | 15.1 | 4.2 ± 20 | 3.3 | 2.6 ± 11.6 | 3.8 | |
Thais chocolata | 0.0 ± 0.0 | 0.0 | 0.0 ± 0.0 | 0.0 | 0.2 ± 1.3 | 0.3 | |
Polyplacophora | Chiton granulosus | 0.0 ± 0.0 | 0.0 | 0.0 ± 0.0 | 0.0 | 0.1 ± 0.4 | 0.1 |
Crustacea | 0.5 | 0.3 | 0.3 | 0.2 | 0.4 | 0.6 | |
Brachyura | Cancer setosus | 0.4 ± 1.6 | 0.3 | 0.3 ± 1.8 | 0.2 | 0.2 ± 0.7 | 0.3 |
Cancer coronatus | 0.1 ± 0.5 | 0.1 | 0.0 ± 0.0 | 0.0 | 0.0 ± 0.0 | 0.0 | |
Paranxanthus barbiger | 0.03 ± 0.3 | 0.0 | 0.0 ± 0.0 | 0.0 | 0.0 ± 0.0 | 0.0 | |
Taliepus dentatus | 0.0 ± 0.0 | 0.0 | 0.0 ± 0.0 | 0.0 | 0.2 ± 0.8 | 0.3 | |
Echinodermata | 27.3 | 17.7 | 28.5 | 22.6 | 30.7 | 44.8 | |
Echinoidea | Loxechinus albus | 5.7 ± 10.7 | 3.7 | 15.3 ± 22.9 | 12.2 | 11.8 ± 25.4 | 17.2 |
Tetrapygus niger | 17.1 ± 43.4 | 11.1 | 11.5 ± 18.3 | 9.1 | 17.4 ± 29.7 | 25.4 | |
Asteroidea | Heliaster helianthus | 3.9 ± 4.9 | 2.5 | 1.1 ± 1.8 | 0.9 | 0.5 ± 1.2 | 0.7 |
Luidia magellanica | 0.5 ± 1.6 | 0.3 | 0.5 ± 1.1 | 0.4 | 0.9 ± 1.8 | 1.3 | |
Strichaster striatus | 0.1 ± 0.4 | 0.1 | 0.1 ± 0.4 | 0.1 | 0.1 ± 0.9 | 0.1 | |
Tunicata | 54.4 | 35.3 | 19.4 | 15.4 | 19.2 | 28.0 | |
Ascidacea | Piura chilensis | 54.4 ± 115.3 | 35.3 | 19.4 ± 42.2 | 15.4 | 19.2 ± 73.2 | 28.0 |
S | 15 | 14 | 18 | ||||
N | 153.7 | 135.6 | 68.8 | ||||
r | 2.78 | 2.64 | 4.01 | ||||
H′ | 1.68 | 1.35 | 2.01 | ||||
J′ | 0.62 | 0.51 | 0.69 | ||||