AREA / PH / SLOPE / COND / VEG / SHADE / PREDFISH / ALT / ROADS / GREEN / URBCBD / URBRES / DISTCBD / PONDDIST
AREA / 1.000 / .319 / -.096 / -.149 / .120 / -.710 / .069 / .297 / -.307 / .336 / -.182 / -.411 / .506 / .515
PH / .319 / 1.000 / -.137 / -.238 / -.331 / -.483 / -.218 / .112 / .165 / -.264 / .006 / -.058 / -.011 / .158
SLOPE / -.096 / -.137 / 1.000 / .037 / -.268 / .299 / -.051 / .070 / .029 / .074 / -.302 / .307 / -.070 / -.323
COND / -.149 / -.238 / .037 / 1.000 / .158 / .129 / .087 / -.386 / -.120 / -.080 / .090 / .177 / -.201 / -.312
VEG / .120 / -.331 / -.268 / .158 / 1.000 / -.164 / .261 / -.010 / -.263 / .132 / -.070 / -.028 / .285 / .210
SHADE / -.710 / -.483 / .299 / .129 / -.164 / 1.000 / .168 / -.223 / .061 / -.213 / .111 / .402 / -.519 / -.671
PREDFISH / -.069 / -.218 / -.051 / .087 / .261 / .168 / 1.000 / -.091 / -.003 / .121 / -.109 / .02 / .070 / .126
ALT / .297 / .112 / .070 / -.386 / -.010 / -.223 / -.091 / 1.000 / .097 / -.106 / -.283 / .02 / .405 / .226
ROADS / -.307 / .165 / .029 / -.120 / -.263 / .061 / -.003 / .097 / 1.000 / -.187 / .189 / .189 / -.248 / -.221
GREEN / .336 / -.264 / .074 / -.080 / .132 / -.213 / .121 / -.106 / -.187 / 1.000 / -.208 / -.222 / .349 / .273
URBCBD / -.182 / .006 / -.302 / .090 / -.070 / .111 / -.109 / -.283 / .189 / -.208 / 1.000 / -.471 / -.608 / -.091
URBRES / -.411 / -.058 / .307 / .177 / -.028 / .402 / .020 / .020 / .189 / -.222 / -.471 / 1.000 / -.012 / -.593
DISTCBD / .506 / -.011 / -.070 / -.201 / .285 / -.519 / .070 / .405 / -.248 / .349 / -.608 / -.012 / 1.000 / .499
PONDDIST / .515 / .158 / -.323 / -.312 / .210 / -.671 / .126 / .226 / -.221 / .273 / -.091 / -.593 / .499 / 1.000
AREA = wetland surface area (measured at the high-water mark using a meter-wheel for smaller ponds and ArcGIS 10.0 for large dams, m2)
PH = water pH
SLOPE = bank slope depth (water depth measured 1 m from the water edge, m)
COND = conductivity (μS/cm3)
VEG = vegetation index (total percentage of the pond covered by aquatic vegetation = emergent + submerged + floating vegetation)
SHADE = shade index (degrees)
PREDFISH = presence of predatory fish, mean number of Gambusia affinis, Clarias gariepinus, Micropterus salmoides and Tilapia sparrmanii individuals.
ALT = altitude (meters above sea level)
ROADS = surface area of roads (m2)
GREEN = surface area of green open space (m2)
URBCBD = surface area of urban central business district (m2)
URBRES = surface area of urban residential area (m2)
DISTCBD = distance from pond to central business district
PONDDIST = average distance between ponds (km)