Some studies on climate changes and decomposition. I've tried to stick to scientific material only.
Unfortunately I can't get to the full text, only the abstract. If you are a student at a University you may be able to get access to this article. Seasonal Variation of Carcass Decomposition and Gravesoil Chemistry in a Cold (Dfa) Climate*
Jessica Meyer B.S. Brianna Anderson B.S. David O. Carter Ph.D.
First published: 03 July 2013
https://doi.org/10.1111/1556-4029.12169 Cited by: 20
*Presented in part at the 61st Annual Meeting of the American Academy of Forensic Sciences, February 16–21, 2009, in Denver, CO. ... Less
https://onlinelibrary.wiley.com/doi/pdf/10.1111/1556-4029.12169University of Montana
ScholarWorks at University of Montana
Theses, Dissertations, Professional Papers Graduate School
2007
Decomposition and the Freeze-Thaw Process in
Northwestern Montana: A Preliminary Study
Laura Beth Wagster
The University of Montana
https://pdfs.semanticscholar.org/e5b2/8b68890384ff50ecf44c801ec10d5610684e.pdf"The goal of this project is to observe decomposition rates of four wolf carcasses over the
duration of winter in northwestern Montana and to consider these rates as they apply to
humans. Four wolf carcasses were studied in order to assess decomposition rates,
particularly winter intervals of the freeze-thaw process and the possibility of the reemergence
of insects during ideal conditions. It is hypothesized that the majority of insect
activity on the carcasses will be limited to only internal activity during harsh weather
conditions. Both carcasses placed in June decayed at predictable rates of
decompositional stages and wolves 1 and 2 remained in the dry stage of decomposition in
May. Wolves 3 and 4 were placed in September. Wolf 4 decayed at predictable rates of
decompositional stages, yet wolf 3 took much longer to transition from the active decay
stage to the dry stage. Both carcasses remained in the dry stage of decomposition until
May. Continual fluctuations of weather during the winter months at the Lubrecht Forest
provided useful information regarding the freeze-thaw process and the presence of insects
during conditions otherwise thought to be inhospitable to thier activity. Larvae were
observed on all carcasses, even after periods of snow fall and snow melt. After numerous
freeze-thaw cycles, wolf 3 was still observed to linger in the advanced stage of
decomposition.
If applicable to humans, these results provide very useful information regarding what
might occur during the decomposition process in an environment such as northwestern
Montana. Although the classifications of insects in this study are basic, the proof that
they exist and, in fact, re-emerge during winter conditions is significant in itself. The
interpretation of this data as it applies to forensic cases offers forensic anthropology a
new aspect of the time since death interval" (Wagster et al. pp. ii)
This study took place in Northwestern Montana in the US so we are looking more at the latitude of Kazakhstan rather than the northern Urals. In order to get the proper latitude we would need this study to take place in the Alaskan tundra of course. Nonetheless this is the yearly climate of Kalispell, a city in NW Montana.
I decided to enter a search for a place with like climate to Russian Siberia. The only place I could think of that I can relate to with some degree of certainly as far as like climate is concerned is Alaska. This is what I found. Microbe Wiki. Now THIS is interesting--quick jump to "Reduced Decomposition" and read about the Alaskan tundra with reduced precipitation but saturated ground--reduced oxygen to microbial life equals reduced decomp.Microbe Wiki - Alaskan Tundra
https://microbewiki.kenyon.edu/index.php/Alaskan_tundra