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Table 2 Mean density ± standard deviation of invertebrate species (ind 100 cm−2) on data pooled over four sampling seasons

From: Habitat complexity and community composition: relationships between different ecosystem engineers and the associated macroinvertebrate assemblages

  S-M M B
Crustacea
 Orchestia gammarella (Pallas) 1766 7 ± 11 0.2 ± 0.7 0.04 ± 0.11
 Amphitoe valida Smith, 1873 0.01 ± 0.06 0 0.1 ± 0.4
 Melita palmata (Montagu, 1804) 0.1 ± 0.5 2 ± 5 0.1 ± 0.8
 Monocorophium insidiosum (Crawford, 1937) 0.2 ± 0.3 1 ± 3 2 ± 5
 Tanais dulongii (Audouin, 1826) 29 ± 27 44 ± 27 20 ± 24
 Exosphaeroma sp. 2 ± 6 2 ± 4 1 ± 4
 Pseudosphaeroma sp. 14 ± 12 6 ± 10 28 ± 32
 Idotea sp. 0.01 ± 0.03 0 0
 Cyrtograpsus altimanus Rathbun, 1914 2 ± 2 2 ± 2 0.3 ± 0.9
Polychaeta
 Eulalia sp. 1 ± 1 1 ± 1 0.4 ± 0.5
 Boccardia polybranchia (Haswell, 1885) 1 ± 2 9 ± 16 55 ± 34
 Scoletoma tetraura (Schmarda, 1861) 0.04 ± 0.10 0 0
 Syllidae 0.3 ± 0.6 0.1 ± 0.3 1 ± 1
 Capitellidae 0.1 ± 0.4 1.6 ± 2.5 0
 Orbiniidae 0.8 ± 1.4 1.3 ± 3.2 0.2 ± 0.5
Bivalvia
 Lasaea sp. 0.2 ± 0.4 0.1 ± 0.3 1 ± 2
 Mytilus sp. 2 ± 2 1 ± 1 0.2 ± 0.5
Gastropoda
 Siphonaria lessoni Blainville, 1824 6 ± 4 11 ± 5 14 ± 6
 Trophon geversianus (Pallas 1769) 0.01 ± 0.02 0 0
Nemertea 2 ± 3 2 ± 2 1 ± 2
Actinaria 4 ± 5 2 ± 4 0.01 ± 0.04
Ofiuroidea 0.01 ± 0.03 0.01 ± 0.03 0
Total richness 22 18 17
  1. Cordgrass–mussel-engineered habitat (S-M), mussel-engineered habitat (M), and barnacle-engineered habitat (B)