Thawing of permafrost may disturb historic cattle burial grounds in East Siberia - PubMed (original) (raw)

Thawing of permafrost may disturb historic cattle burial grounds in East Siberia

Boris A Revich et al. Glob Health Action. 2011.

Abstract

Climate warming in the Arctic may increase the risk of zoonoses due to expansion of vector habitats, improved chances of vector survival during winter, and permafrost degradation. Monitoring of soil temperatures at Siberian cryology control stations since 1970 showed correlations between air temperatures and the depth of permafrost layer that thawed during summer season. Between 1900s and 1980s, the temperature of surface layer of permafrost increased by 2-4°C; and a further increase of 3°C is expected. Frequent outbreaks of anthrax caused death of 1.5 million deer in Russian North between 1897 and 1925. Anthrax among people or cattle has been reported in 29,000 settlements of the Russian North, including more than 200 Yakutia settlements, which are located near the burial grounds of cattle that died from anthrax. Statistically significant positive trends in annual average temperatures were established in 8 out of 17 administrative districts of Yakutia for which sufficient meteorological data were available. At present, it is not known whether further warming of the permafrost will lead to the release of viable anthrax organisms. Nevertheless, we suggest that it would be prudent to undertake careful monitoring of permafrost conditions in all areas where an anthrax outbreak had occurred in the past.

Keywords: Arctic; Russia; anthrax; climate change; zoonoses.

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Figures

Fig. 1

Fig. 1

Geographic distribution of burial grounds of cattle that died (+) from anthrax in Yakutia.

Fig. 2

Fig. 2

The ranges of annual average temperatures observed in different parts of Yakutia.

Fig. 3

Fig. 3

Annual average temperature trend in Yakutsk city.

References

    1. Vasiliev AA, Drozdov DS, Moskalenko NG. Dynamics of perennial formations in West Siberia in relation to climate change. Earth Cryosphere. 2008;12:10–8.
    1. Anisimov OA, Velichko AA, Demchenko PF, Eliseev AV, Mohov II, Nechaev VP. Influence of climate change on permafrost in the past, present and future. Phys Atmosp Oceans. 2004;38:25–39.
    1. Pavlov AV. The current trends in temperatures of soils in Russian North. Earth Cryosphere. 2008;7:22–27.
    1. Pavlov AV, Ananieva GV. Assessment of current changes in air temperatures in the cryolite zone of the Russian Federation. Earth Cryosphere. 2004;8:3–9.
    1. Izrael YA, Pavlov AV, Anokhin YA, Myach LT, Sherstiukov BG. Statistical assessment of dynamics of climate elements in permafrost areas in the Russian Federation. Meteorol Hydrol. 2006;5:27–38. (Russian)

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