Average arthropod abundance, species richness and diversity.
Average
±
S.E. (per site) Test of the difference
Gardens Outside 2 df P
Abundance
All Species 122.07
±
21.39 40.73
±
5.15 475.3 1 0.001
Araneae 2.50 ± 0.31 2.33 ±
0.39 0.024 1 0.876
Coleoptera 5.50 ±
1.91 4.13
±
1.01 1.622 1 0.203
Collembola 10.50
±
2.50 4.50
±
1.28 45.56 1 0.001
Formicidae 78.20
±
22.33 22.60
±
6.08 486.76 1 0.001
Hemiptera 5.00
±
1.81 3.92
±
0.86 4.60 1 0.032
Orthoptera 1.70
±
0.40 1.50
±
0.14 2.50 1 0.114
SPECIES RICHNESS (All) 20.27 ±
1.92 14.53 ±
1.06 14.23 1 0.001
SIMPSON DIVERSITY (All) 0.741 ±
0.05 0.82 ±
0.02 1.63 1 0.202
Generalized mixed effect models with habitat (in/out of garden) as the fixed effect and garden and wadi as random effects. Abundance and richness models fitted with
Poisson errors and Laplace approximations. Alpha diversity model fit with normal errors and REML approximations.