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Table 4 The response to protection ( LnRR ¯ [95% CI]) for each ‘exploitation status’ category (target-protected [TP], target-not protected [TNP] and non-target [NT]), using density 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 = 29 N = 5 N = 10 N = 27 N = 5 N = 8
rho = 0 0.47 [0.22 → 0.72] 0.78 [0.18 → 1.38] 0.57 [0.17 → 0.97] 0.41 [0.21 → 0.61] 0.76 [0.30 → 1.22] 0.21 [−0.12 → 0.54]
rho = 0.2 0.47 [0.21 → 0.73] 0.81 [0.17 → 1.46] 0.59 [0.16 → 1.04] 0.41 [0.20 → 0.61] 0.80 [0.32 → 1.28] 0.19 [−0.19 → 0.56]
rho = 0.5 0.47 [0.20 → 0.74] 0.85 [0.17 → 1.52] 0.64 [0.17 → 1.12] 0.41 [0.20 → 0.62] 0.85 [0.34 → 1.35] 0.18 [−0.23 → 0.60]
rho = 0.8 0.47 [0.20 → 0.75] 0.87 [0.17 → 1.57] 0.68 [0.18 → 1.17] 0.41 [0.20 → 0.63] 0.88 [0.36 → 1.41] 0.19 [−0.26 → 0.63]
rho = 1 0.47 [0.19 → 0.75] 0.89 [0.18 → 1.60] 0.70 [0.20 → 1.20] 0.41 [0.20 → 0.63] 0.90 [0.36 → 1.44] 0.19 [−0.27 → 0.65]
  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. LnRR ¯  > 0 means more fish inside the PPA; LnRR ¯  < 0 means fewer fish in the PPA. When the CI overlaps 0 it implies a non-significant difference between PPA and non-protected area.