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Table 5 The response to protection ( LnRR ¯ , [95% CI]) for each ‘exploitation status’ category (target-protected [TP], target-not protected [TNP] and non-target [NT]), using biomass data

From: Evaluating the biological effectiveness of fully and partially protected marine areas

  (a) All MPA case-studies included (b) Sensitivity analysis; habitat confounded studies excluded
  TP TNP NT TP TNP NT
  N = 12 N = 5 N = 7 N = 10 N = 5 N = 6
rho = 0 0.35 [0.12 → 0.59] 0.43 [0.07 → 0.79] 0.18 [−0.14 → 0.50] 0.42 [0.18 → 0.67] 0.43 [0.07 → 0.79] 0.23 [−0.10 → 0.56]
rho = 0.2 0.38 [0.12 → 0.64] 0.42 [0.03 → 0.80] 0.22 [−0.16 → 0.60] 0.44 [0.17 → 0.71] 0.42 [0.04 → 0.80] 0.29 [−0.11 → 0.69]
rho = 0.5 0.40 [0.11 → 0.69] 0.40 [−0.02 → 0.82] 0.26 [−0.17 → 0.68] 0.45 [0.15 → 0.76] 0.40 [−0.02 → 0.81] 0.35 [−0.10 → 0.80]
rho = 0.8 0.40 [0.09 → 0.72] 0.38 [−0.07 → 0.82] 0.28 [−0.18 → 0.74] 0.46 [0.13 → 0.80] 0.38 [−0.06 → 0.82] 0.39 [−0.10 → 0.88]
rho = 1 0.41 [0.08 → 0.74] 0.37 [−0.09 → 0.83] 0.29 [−0.18 → 0.77] 0.47 [0.12 → 0.82] 0.37 [−0.09 → 0.82] 0.41 [−0.10 → 0.92]
  1. Results where different correlation coefficients (rho = 0, 0.2, 0.5, 0.8, 1) among individual species responses were used to compute the within-study sampling variance are given on separate rows. The summary effect size and 95% CI are given for analysis using (a) all PPA case-studies, and (b) excluding PPAs with habitat confounded effects. N represents the number of PPAs for each exploitation category. Ln(RR) > 0 means more fish inside the PPA; Ln(RR) < 0 means fewer fish in the PPA. When the CI overlaps 0 it implies a non-significant difference between PPA and non-protected area.