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. 2010 Aug 20;5(8):e12327. doi: 10.1371/journal.pone.0012327

Table 1. Summary statistics for seascape metrics and patch structure variables.

Seascape category Metric/variable Measure Transformation Min. Max. Mean CV
Configuration Distance from channel km Log10 0.8 13.1 7.3 43.8
Distance to mangroves km Log10 0.1 16.5 7.4 68.0
Nearest neighbor m Log10 4.2 341.9 111.6 75.7
Reef area in 1 km buffer m2 Log10 49456.0 1412634.0 311541.5 81.3
Reef area in 500 m buffer m2 Log10 10832.0 310756.0 67834.1 78.8
Reef area in 200 m buffer m2 Log10 95.0 47177.0 10509.0 91.8
Composition Area* m2 Log10 17.0 17660.0 4020.4 104.2
Area of hard substrate * m2 Log10 16.0 12856.0 2905.9 98.4
Perimeter (m) * m Log1010 17.0 696.0 212.6 64.0
Edge: area ratio* ratio Box cox 1.0 36.4.0 14.0 59.5
Estimated volume* m3 None 26.0 33342.0 6022.2 110.8
Volume* Δ m3 Box cox 10583.6 387968.6 112978 88.5
Surface areaΔ m2 None 653.6 71072.9 10991.5 111.1
Patch structure Fine-scale rugosity index None 1.2 2.1 1.5 13.4
Coarse-scale rugosityΔ index None 1.0 1.6 1.1 3.3
Structural complexity index None 1.0 3.0 1.7 54

All metrics and variables were quantified for each sampling site (n = 87).

*metrics included in PCA of ‘patch size’ due to multicollinearity

calculated as area * mean fine-scale rugosity

Δ

estimated from ENVI bathymetric habitat maps