Ecological and anthropogenic covariates ... - GANGAPEDIA

interpolation deriving from regionalized variable theory, which depends on expressing
spatial variation of the property in terms of the variogram, and it minimizes the
prediction errors which are themselves estimated (Oliver & Webster, 1990). A 45
degree directional variogram was used to fit to the following model 1.216759 Nug(0)
+ 1.085575 Bessel(1000) + 1.035012 Spherical(5000). Gharial encounter rates and
ecological covariates (depth values and sand bank extent) were measured at 0.5 km
sub-segment level, and overlaid onto a raster.
Sand Bank Profile
Figure 2: Schematic Map of a section of the study area, representing the proportional
extent of shoreline substratum (sand)
2 0 2 4 Kilometers
18
High Sand
Moderate Sand
Low Sand
No Sand