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Table 10 ANOVA showing the effects of locations, Prosopis invasiveness, a soil layer, physiographic and human activities on soil seed patterns in South Afar, Ethiopia

From: Prosopis juliflora invasion and environmental factors on density of soil seed bank in Afar Region, Northeast Ethiopia

Model Sum of squares Df Mean square F value P value
H′ *district 1.982 1 1.982 13.053 0.0002**
R * district 56.193 1 56.193 21.85 < 0.0001***
E′ * district 0.061 1 0.061 8.381 0.004**
H′ * site 10.138 3 3.379 25.281 < 0.0001***
R * site 214.113 3 71.371 32.164 < 0.0001***
E′ * site 0.518 3 0.173 27.461 < 0.0001***
H′ * habitat 6.153 3 2.051 14.355 < 0.0001***
R * habitat 127.473 3 42.491 17.565 < 0.0001***
E′ * habitat 0.003 3 0.001 0.119 0.95
H′ * soil layer 0.166 3 0.055 0.353 0.79
R * soil layer 3.024 3 1.008 0.372 0.77
E′ * soil layer 0.009 3 0.003 0.422 0.74
H′ * altitude 2.988 2 1.494 9.971 < 0.0001***
R * altitude 20.422 2 10.211 3.839 0.02*
E′ * altitude 0.209 2 0.104 14.965 < 0.0001***
H′ * slope 14.071 11 1.279 10.078 < 0.0001***
R * slope 289.955 11 26.36 12.659 < 0.0001***
E′ * slope 1.633 11 0.148 39.31 < 0.0001***
H′ * aspect 18.829 7 2.69 23.459 < 0.0001***
R * aspect 453.399 7 64.771 38.512 < 0.0001***
E′ * aspect 0.73 7 0.104 17.851 < 0.0001***
H′ * human impact 1.007 3 0.336 2.168 0.09
R * human impact 68.392 3 22.797 8.921 < 0.0001***
E′ * human impact 0.108 3 0.036 5.003 0.002**
H′ * grazing intensity 10.423 3 3.474 26.119 < 0.0001***
R * grazing intensity 162.528 3 54.176 23.171 < 0.0001***
E′ * grazing intensity 0.355 3 0.118 17.792 < 0.0001***
H′ * disturbance intensity 9.338 3 3.113 22.968 < 0.0001***
R * disturbance intensity 127.942 3 42.647 17.638 < 0.0001***
E′ * disturbance intensity 0.271 3 0.09 13.178 < 0.0001***
  1. Notice: H′ is the Shannon-Wiener index, R is species richness, E′ is the Shannon evenness, Prosopis invasion levels/habitats (PT, PM, NIWL, and OGLs), Df is the degree of freedom, * significant at P < 0.05, ** is the high significant at P < 0.05, *** is the very high significant at P < 0.05; the same letters indicate insignificant variations at P < 0.05