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6.0 Riprap Biota<br />

Table 6.3-2. Mean Abundance <strong>of</strong> Riprap Invertebrates within Taxonomic Groups by <strong>and</strong> across<br />

Tidal Zones in Los Angeles <strong>and</strong> Long Beach Harbors, January <strong>and</strong> July <strong>2008</strong>.<br />

Harbor<br />

Location Station Crustaceans Echinoderms Molluscs Polychaetes<br />

Upper Intertidal<br />

Other<br />

Minor<br />

Phyla<br />

Mean<br />

Total<br />

Gr<strong>and</strong><br />

Total<br />

Across<br />

Surveys<br />

Outer LARR1 100 0 10 73 2 185 738<br />

Inner LARR2 97 0 11 1 0 109 436<br />

Inner LARR3 61 0 26 44 23 154 615<br />

Outer LARR4 109 0 18 1 0 128 510<br />

Outer LBRR1 105 0 5 0 0 218 436<br />

Inner LBRR2 154 0 11 0 0 164 657<br />

Outer LBRR3 118 0 30 0 0 148 591<br />

Outer LBRR4 7 0 4 3 0 14 55<br />

Upper Intertidal Mean 94 0 14 15 3 140 505<br />

Lower Intertidal<br />

Outer LARR1 452 7 12 74 126 670 2679<br />

Inner LARR2* 21 0 2 32 0 55 218<br />

Inner LARR3 104 59 25 41 26 254 1016<br />

Outer LARR4 75 1 4 5 0 170 339<br />

*<br />

Outer LBRR1 179 14 7 48 9 257 1028<br />

Inner LBRR2 90 42 21 58 13 223 893<br />

Outer LBRR3 10 37 22 57 9 135 539<br />

Outer LBRR4 30 8 4 44 12 98 391<br />

Lower Intertidal Mean 120 21 12 45 24 233 888<br />

Subtidal<br />

Outer LARR1 198 3 22 48 15 285 1140<br />

Inner LARR2* 74 5 5 29 7 118 472<br />

Inner LARR3 22 59 23 36 10 150 599<br />

Outer LARR4 70 1 10 26 6 226 450<br />

Outer LBRR1 195 9 31 34 7 276 1102<br />

Inner LBRR2 52 33 12 23 3 122 487<br />

Outer LBRR3 20 40 25 91 18 194 774<br />

Outer LBRR4 27 21 9 20 15 91 363<br />

Subtidal Mean 82 21 17 38 10 183 673<br />

Total Mean Across Tidal Zones<br />

Outer LARR1 250 3 15 65 47 380 380<br />

Inner LARR2 64 2 6 20 2 94 94<br />

*<br />

Inner LARR3 62 39 25 40 20 186 186<br />

Outer LARR4 85 1 11 11 2 175 108<br />

<strong>2008</strong> Biological Surveys <strong>of</strong> Los Angeles <strong>and</strong> Long Beach Harbors 6–11<br />

April 2010

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