. Bulletin. Science; Natural history; Natural history. BEACH WRACK MACROINVERTEBRATES 11 T 30 C. vanduzeei T40 R costallis T 43 C. atra. 12 24 36 48 72 96 TIME(riRS) 120 148 Fig. 5. Mean number of adult dipterans (T-30, T-40, T-43) caught with sticky trap "on sand' samples for 148 hours following wrack island deposition (three islands, four replicates, N = 12). late succession (four to five weeks). Numbers of sand species increased more slowly than wrack species during early succession, stabilized at a higher relative maximum during later mid succession, then decreased rather quickly ther
. Bulletin. Science; Natural history; Natural history. BEACH WRACK MACROINVERTEBRATES 11 T 30 C. vanduzeei T40 R costallis T 43 C. atra. 12 24 36 48 72 96 TIME(riRS) 120 148 Fig. 5. Mean number of adult dipterans (T-30, T-40, T-43) caught with sticky trap "on sand' samples for 148 hours following wrack island deposition (three islands, four replicates, N = 12). late succession (four to five weeks). Numbers of sand species increased more slowly than wrack species during early succession, stabilized at a higher relative maximum during later mid succession, then decreased rather quickly thereafter. At late succession, sand species were always greater than wrack species. Dice's Similarity Coefficient disclosed a high correlation between all binary cohorts, with cohort one and two having identical resident species (Table 5). Mean density changes of all resident species combined (minus adult Diptera and Amphipoda) were also similar for either sand or wrack samples of all cohorts (Fig. 8). Wrack densities commonly increased rapidly to attain maximum values. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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