Nomadic pastoralism
Nomadic pastoralism is a form of pastoralism in which livestock are herded in order to seek for fresh pastures on which to graze. True nomads follow an irregular pattern of movement, in contrast with transhumance, where seasonal pastures are fixed.[1] However, this distinction is often not observed and the term 'nomad' used for both—and in historical cases the regularity of movements is often unknown in any case. The herded livestock include cattle, water buffalo, yaks, llamas, sheep, goats, reindeer, horses, donkeys or camels, or mixtures of species. Nomadic pastoralism is commonly practised in regions with little arable land, typically in the developing world, especially in the steppe lands north of the agricultural zone of Eurasia.[2]
Of the estimated 30–40 million nomadic pastoralists worldwide, most are found in central Asia and the Sahel region of North and West Africa, such as Fulani, Tuaregs, and Toubou, with some also in the Middle East, such as traditionally Bedouins, and in other parts of Africa, such as Nigeria and Somalia. Increasing numbers of stock may lead to overgrazing of the area and desertification if lands are not allowed to fully recover between one grazing period and the next. Increased enclosure and fencing of land has reduced the amount of land for this practice.
There is substantive uncertainty over the extent to which the various causes for degradation affect grassland. Different causes have been identified which include overgrazing, mining, agricultural reclamation, pests and rodents, soil properties, tectonic activity, and climate change.[3] Simultaneously, it is maintained that some, such as overgrazing and overstocking, may be overstated while others, such as climate change, mining and agricultural reclamation, may be under reported. In this context, there is also uncertainty as to the long-term effect of human behavior on the grassland as compared to non-biotic factors.[4]
Often traditional nomadic groups settle into a regular seasonal pattern of transhumance. An example of a normal nomadic cycle in the northern hemisphere is:
The movements in this example are about 180 to 200 km. Camps are established in the same place each year; often semi-permanent shelters are built in at least one place on this migration route.
In sub-regions such as Chad, the nomadic pastoralist cycle is as follows:
In Chad, the sturdy villages are called hillé, the less sturdy villages are called dankhout and the tents ferik.[18]
Cross-border pastoralism[edit]
Sometimes nomadic pastoralists move their herds across international borders in search of new grazing terrain or for trade. This cross-border activity can occasionally lead to tensions with national governments as this activity is often informal and beyond their control and regulation. In East Africa, for example, over 95% of cross-border trade is through unofficial channels and the unofficial trade of live cattle, camels, sheep and goats from Ethiopia sold to Somalia, Kenya and Djibouti generates an estimated total value of between US$250 and US$300 million annually (100 times more than the official figure).[29] This trade helps lower food prices, increase food security, relieve border tensions and promote regional integration.[29] However, there are also risks as the unregulated and undocumented nature of this trade runs risks, such as allowing disease to spread more easily across national borders. Furthermore, governments are unhappy with lost tax revenue and foreign exchange revenues.[29]
There have been initiatives seeking to promote cross-border trade and also document it, in order to both stimulate regional growth and food security, but also to allow the effective vaccination of livestock.[29] Initiatives include Regional Resilience Enhancement Against Drought (RREAD), the Enhanced Livelihoods in Mandera Triangle/Enhanced Livelihoods in Southern Ethiopia (ELMT/ELSE) as part of the Regional Enhanced Livelihoods in Pastoral Areas (RELPA) programme in East Africa, and the Regional Livelihoods Advocacy Project (REGLAP) funded by the European Commission Humanitarian Aid Office (ECHO).[29]