For thousands of years, Przewalski horses withstood a multitude of natural and anthropogenic hazards on the East Asian grasslands, but eventually died out under the combined pressure of environmental stressors of the 19th-20th centuries. Today, reintroduced Takhis are learning to cope with old and new hazards on their reintroduction sites. While some environmental stressors disappeared (military activities, hunting), others exacerbated (overgrazing, land degradation, desertification) and new ones emerged (e.g. road erosion, mining). Reintroduced individuals bear on their shoulders the long term survival of the species, but their relatively low numbers still make them particularly vulnerable to such threats.
Livestock overload and overgrazing
Takhis died out under communism in the Mongolian People’s Republic in 1969 and were brought back to their native land at a time of transition to a free-market economy in the early 1990’s. Until the 20th century, the Mongolian steppe, which covers 80% of the country’s land area, had always been exploited by herdsmen through transhumant pastoralism, the most adequate way of using the land under the ruthless regional climate. Collectivization never suppressed this effective traditional system, but herders’ mobility on the steppes became tightly controlled from 1950. As ancient pastoral customs were replaced by statutory regulations and state support increased in the form of subsidies and supplies to compensate the loss of mobility (winter forage, consumer good, transport, risk management and marketing services, etc.), nomads progressively Continue reading