Evolution of pastoral livestock farming on arid rangelands in the last 15 years

Livestock farming in arid rangelands constitutes a key component in the agricultural sector, particularly in developing countries. Farms have rapidly changed in recent decades, which has resulted in the modification of their structure, management and economic performance. Nowadays, livestock production in arid rangelands is threatened by climate change, coupled with the impact of complex interactions among social, economic and political factors. The present study analyses the main changes that have occurred on farms in the arid rangelands of south Tunisia from 2004 to 2019 and discusses the factors that explain the geographical patterns of such changes. Data were collected through face-to-face questionnaires with 73 farmers in two years (2004 and 2019). Information included farm structure and management, resources use and economic performance. Multivariate statistical methods analysed the differences in farm typologies between dates and the different pathways of change. Results showed that most farms increased herd size and cereal area for feeding the sheep, and reduced the time spent in rangelands. These changes could be partly explained as a response to decreasing gross margins per livestock unit and the deployment of policies fostering the use of agriculture-based feed resources. Despite these general trends, the variability among pathways of change was wide. Few farms kept using rangelands by focusing on sheep or camel production. Small sheep farms intensified the use of off-farm feeds in the north of the study area, where ecological conditions favoured agriculture. Feed supplementation allowed herd size and animal production to increase, with a substantial risk of susceptibility to market fluctuations. The economic results showed that camel farming combined with small ruminant species can lead to a similar profitability to, or even higher than, large farms that focus solely on sheep and rely on feed supplementation. We conclude that the current situation of livestock farming in arid rangelands remains fragile and their long-term viability is uncertain.