In order to find out if there is a significant trend within the rainfall series studied, a Mann- Kendall test was carried out.
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Perception and adaptation of pastoralists to climate variability and change in Morocco's arid rangelands.
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Likewise, these local perceptions were found to be similar to those reported in earlier studies which indicated a decreasing trend in rainfall and an increase in temperature over the last decades in many African countries ( Gbetibouo, 2009 ; Ouédraogo et al., 2010 ; Vissoh et al., 2012 ; Tamiru et al., 2014 ; Opiyo et al., 2015 ; Ndamani and Watanabe, 2016 ).