The dry savannahs of the Sahelian vegetation zone house a remarkable community of large mammals that have been less studied than their counterparts in the eastern Africa. Here we examine some aspects of the ecology of a community of twenty different large mammal species in a savannah of Burkina Faso, for a relatively long-term period (seven years). We observed remarkable interannual differences in terms of (i) number of contacts and (ii) their groups size (range of groups). Nonetheless, the calculated Kilometric Index of Abundance, with all species pooled, showed a relatively stable value of 0.88–1 individual per Km, apart in 2012 when it decreased to 0.7. GLM models on the observed number of contacts and group sizes revealed that there were significant effects of the species, but neither of the year nor of the season. Remarkable species-specific density fluctuations throughout time were observed when applying the DISTANCE methodology to the dataset. The sex ratio showed great fluctuations between the years and by species, even if there was a general predominance of females.

萨赫勒植被带的干燥大草原上栖息着一个非凡的大型哺乳动物群落，与东非的同类相比，这些哺乳动物的研究较少。在这里，我们研究了布基纳法索大草原上二十种不同大型哺乳动物物种群落生态学的某些方面，为期相对较长的时期（七年）。我们观察到在（i）联系人数量和（ii）群体规模（群体范围）方面存在显着的年际差异。尽管如此，计算出的公里丰度指数（所有物种汇总）显示出相对稳定的数值，为每公里 0.88-1 个个体，除了 2012 年降至 0.7 之外。关于观察到的接触数量和群体规模的 GLM 模型显示，物种有显着影响，但年份和季节都没有显着影响。当将距离方法应用于数据集时，观察到随时间的显着的物种特定密度波动。尽管雌性普遍占主导地位，但性别比例在年份和物种之间表现出很大的波动。