Ecological Archives A021-138-A4

Marina García-Llorente, Berta Martín-López, Sandra Díaz, and Carlos Montes. 2011. Can ecosystem properties be fully translated into service values? An economic valuation of aquatic plant services. Ecological Applications 21:3083–3103.

APPENDIX D (TABLE D1). Factor loadings derived from principal component analysis (PCA) to characterize ecosystem service providers (ESPs).

Variables Factor loadings
F1 F2 F3 F4 F5 F6 F7 F8
Flee-floating -0.485 -0.577 0.146 -0.257 0.249 -0.171 0.163 -0.162
Anchored, submerged leaves -0.449 0.417 -0.089 -0.268 -0.511 0.088 -0.332 0.157
Anchored, emergent leaves -0.177 0.585 -0.326 -0.328 -0.265 -0.135 -0.010 0.038
Graminoids 0.203 -0.075 -0.016 0.683 0.436 -0.136 -0.265 0.148
Helophytes 0.659 -0.032 0.123 -0.121 0.056 0.153 0.266 -0.243
Perennial 0.478 -0.003 0.152 -0.488 0.123 -0.288 -0.339 -0.144
Plant height 0.529 0.564 0.163 -0.045 -0.216 0.141 0.123 -0.043
Leaf area 0.516 0.170 -0.061 -0.264 0.148 0.426 -0.222 -0.016
Leaf texture 0.549 -0.276 -0.238 -0.403 0.191 0.021 0.070 0.093
Physical defenses 0.461 0.262 -0.438 0.280 0.232 -0.260 0.033 -0.062
Rhizome/tubers 0.572 0.098 0.400 0.028 0.076 0.090 -0.416 -0.021
Stolons -0.331 -0.264 0.102 -0.458 0.153 -0.420 0.106 0.205
Body flexibility -0.600 0.298 0.254 0.407 -0.027 -0.066 0.070 -0.082
Wind dispersion 0.621 -0.105 0.019 0.173 -0.238 -0.455 -0.075 0.278
Water dispersion -0.329 -0.056 0.514 -0.129 0.196 0.330 -0.148 -0.371
Animal dispersion -0.197 0.521 -0.397 -0.259 0.528 0.026 0.099 -0.035
Dispersule size 0.052 0.615 0.502 0.203 0.209 -0.119 0.125 0.011
Dispersule shape 0.055 0.440 0.521 -0.007 -0.092 -0.290 0.289 -0.099
Early phenology -0.127 -0.072 0.250 0.007 0.186 0.504 0.128 0.688
Vegetative reproduction -0.088 0.072 0.567 -0.318 0.151 -0.276 -0.255 0.259
Flower visually attractive -0.221 0.647 -0.172 -0.187 0.451 -0.034 0.073 0.117
Foliage visually attractive 0.539 -0.072 0.233 -0.148 -0.140 0.059 0.526 0.139
Eigenvalue 3.932 2.806 2.100 1.967 1.497 1.388 1.152 1.018
Variance explained (%) 17.872 12.754 9.547 8.941 6.805 6.311 5.236 4.628
Variance accumulated (%) 17.872 30.625 40.172 49.113 55.918 62.228 67.464 72.092

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