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Braz. j. oceanogr. vol.56 número2

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Fig. 1. PVC ring-shaped experimental blocks (60 cm diameter, 30 cm height and 3 mm thickness) with 10 roughened PVC  panels as experimental units (E.U., 15 x 15 cm, 3 mm thickness) vertically oriented inside the ring
Fig. 3. Relationship between percent cover of fouling removed and corresponding  disturbance area (in cm 2 ) and perimeter:area ratio (P.A.)
Table 1. Sessile species found on panels along the post- post-disturbance period of the experiment at Guanabara Bay
Fig. 4. Mean (+ standard deviation) species diversity (H’, log e ), uniformity (Pielou, J’[left axis]) and  richness (right axis) along a gradient of increasing disturbance area A
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