Census location

Year

Season census done

Chi-square goodness of fit value

Conclusion

Wet season

Dry season

Amboseli

2010

168

49

Χ² = 65.26, df = 1, p < 0.001

For 2010, wet season number was higher than dry season number.

2013

187

139

Χ² = 7.07, df = 1, p = 0.008

For 2013, wet season number was higher than the dry season number.

Chi-square value

Χ² = 1.02, df = 1, p = 0.31

Χ² = 43.09, df = 1, p < 0.001

For the set of wet season number, Oryx number was similar, with a negligible increase in 2013, but for the dry season, Oryx number in 2013 was higher than for 2013 [i.e. Oryx number was increasing with time particularly in the dry season].

Magadi

2010

24

1

Χ² =21.16, df = 1, p < 0.001

For 2010, wet season number was higher than the dry season number higher.

2013

191

13

Χ² = 155.31, df = 1, p < 0.001

For 2013, wet season number was higher than dry season number

Chi-square value

Χ² = 129.72, df = 1, p < 0.001

Χ² =10.29, df = 1, p < 0.001

For both sets of wet season, and dry season, Oryx t number in 2013 was higher than for 2010 [i.e. Oryx number increased with time for both seasons].

West Kilimanjaro

2010

4

8

Χ² = 1.33, df = 1, p = 0.25

For 2010, wet season and dry season numbers were similar, with dry season being non-significantly higher than wet season.

2013

66

71

Χ² = 0.18, df = 1, p = 0.67

For 2013, wet season and dry season numbers were similar, with dry season being non-significantly higher than wet season.

Chi-square value

Χ² = 96.09, df = 1, p < 0.001

Χ² = 19.65, df = 1, p < 0.001

For the set of wet season, dry season, Oryx number in 2013 was higher than Oryx number for 2010 [i.e. Oryx number was increasing with time]

Natron

2010

No Oryx present

20

Not done

In 2010, Oryx was only seen in Natron in the dry season

2013

89

19

Χ² = 45.37, df = 1, p < 0.001

For 2013, wet season number was higher than dry season number

Chi-square value

Oryx only seen in Natron in 2013 wet season,

Χ² = 0.26, df = 1, p = 0.87

For the set of dry season, Oryx number was similar in 2013 and 2010, with non-significant decline in 2013. But for wet season, Oryx was not seen in 2010 and only 2013 wet season implying number of wet season Oryx was also higher.