Table 3.

Basic statistics and the Gerbillidae index describing data from trapping studies, analyses of recent owl pellet assemblages and Byzantine owl assemblages of the Negev. (Cases with zero values are excluded from calculations. In the fourth column presenting data on high precipitation, loess soil material 15 of the 19 trapping sites contain zero Gerbillus and the Gerbillidae index could not be accurately determined.)

precipitation/soil
low/sandylow/loessialmedium–high/loessialhigh/loessial
trapping densities (individuals ha−1)
 Gerbillusno. of sites7724
minimum2.81.320.90.3
maximum8.46.8812.8
mean1.913.731.65
CV29%51%55%
 Merionesno. of sites56517
minimum0.30.332.20.3
maximum0.91.55.63
mean0.480.863.21.06
CV24%46%43%90%
index Gerbillidae
trappingno. of sites5624
minimum0.040.142.440.05
maximum0.180.392.50.53
mean0.070.210.26
CV72%41%87%
archaeological assemblages: based on present day (observed) precipitation/soil conditions
Sa'adon (structure A)locus 1081
locus 1071.02
Nahal Beqha3.94
modern owl pellet assemblages
no. of sites62
minimum0.0529.33
maximum0.4334.56
mean0.25
CV63%