Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce
Datum vydání před více než 9 roky
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Fish benthic trawls were completed by the Southern California Coastal Water Research Project (SCCWRP). Data from 425 fisheries independent trawls ranging from 2-215 meters depth were collected in 1994 and 1998 during the months of June-August. Fish that were not present in at least 5% of the trawls were removed from this analysis. The data set contained information for 150 fish species, but removal of rare species resulted in 48 species. Site groups were calculated using the Bray-Curtis dissimilarity coefficient with average means clustering (Romesburg, 1991). Gear included a 7.6-m head-rope semi balloon otter trawl with 1.25 cm codend mesh trawled for 5-10 minutes at each station. For more information on trawl methods, see Allen et al. (1997), and Allen et al. (2003).