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Table 3 Perceived proportion of grazing lands invaded by P. juliflora on the six villages of the Middle Awash area

From: The invasion of Prosopis juliflora and Afar pastoral livelihoods in the Middle Awash area of Ethiopia

Invasion proportion Villages χ 2
Amibara Awash Arba Gewane Halaideghe Sideha-Faghe Worer
Less than half invaded 2 (11.1)- 0 (0.0)- 0 (0.0)- 0 (0.0)- 2 (8.0)- 1 (2.3)-  
Half to two thirds invaded 4 (22.2) 4 (28.6) 2 (10.0) 1 (5.0) 2 (8.0) 14 (31.8)  
3.15 2.76 4.14 3.94 4.53 8.47 9.10
Two thirds to three fourths invaded 8 (44.4) 3 (21.4) 4 (19.0) 11 (55.0) 7 (28.0) 7 (15.9)  
4.87 4.09 6.13 5.84 6.72 12.56 10.43
Three fourths and above invaded 4 (22.2) 7 (50.0) 15 (71.0) 8 (40.0) 14 (56.0) 22 (50.0)  
8.18 7.15 10.73 10.22 11.75 21.97 4.75
  1. χ 2 = 24.28, p = 0.007. The χ 2 test did not include the “less than half invaded” row as their expected count was less than 5. The numbers in brackets show the proportion; values in the second row of each cell show the expected count from χ 2 test