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Table 5.19. Effects of multiple gears on sand substrate habitat: summary of published studies. (S = statistically significant; citations in bold print are peer-reviewed publications.)

No. Reference Location Depth Sediment Effects Recovery Approach
1 Almeida et al. 2000 Eastern Georges Bank, USA <50->90 m Sandy Microhabitat associated with two species of sponges more abundant inside closed area; no S differences for six other microhabitat types.    Analysis of still photos and video imagery inside and outside area closed to trawls, dredges, longlines, and gill nets 4.5 yr after it was closed.
2 Kaiser, Spencer et al. 2000 South Devon coast, England 15-70 m Fine, medium, and coarse sand No S effect of high fishing effort on numbers of infaunal or epifaunal species or individuals; in high-effort areas there were: 1) a lower reduced abundance of larger, less mobile, and emergent epifauna; 2) a higher abundance of more epifauna; and 3) fewer high-biomass species of epifauna and infauna; infauna in deeper coarse-medium sand habitat most affected by fishing.   Compared benthic communities in areas of high, medium, and low fishing effort by fixed and mobile gears; each area with three sites (shallow, fine sand, deep medium sand, and deep coarse-medium sand). 

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(Modified Jun. 13 2008)