Lindholm et al . : Ecological effects of bottom trawling on fish habitat along the central California outer continental shelf 
87 
• Control □ Trawled 
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Figure 2 
Temporal variability in mean density (individuals m -2 ) of 6 members of the invertebrate commu- 
nity found in the study plots, both control (untrawled) and trawled surveyed off central California 
between 2009 and 2012. The 6 groups of invertebrates shown are (A) scale worms (polychaetes), 
(B) brittle stars (ophiuroids), (C) sea slugs (notaspideans), (D) octopuses (octopods), (E) squids 
(teuthids), and (F) sea stars (asteroids). Note that the scale on they-axis differs among plots. Indi- 
cated with error bars, 95% confidence intervals are provided for the organisms with densities >10 
individuals m -2 (worms and brittle stars). 
