Microbial degradation of Pleistocene permafrost-sealed fossil mammal remains
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F22%3APU147187" target="_blank" >RIV/00216305:26310/22:PU147187 - isvavai.cz</a>
Alternative codes found
RIV/00094862:_____/22:N0000068 RIV/00216224:14310/23:00130003
Result on the web
<a href="https://www.cambridge.org/core/journals/quaternary-research/article/microbial-degradation-of-pleistocene-permafrostsealed-fossil-mammal-remains/36BFA00736486E77C4E4CECC58572ACE" target="_blank" >https://www.cambridge.org/core/journals/quaternary-research/article/microbial-degradation-of-pleistocene-permafrostsealed-fossil-mammal-remains/36BFA00736486E77C4E4CECC58572ACE</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/qua.2022.28" target="_blank" >10.1017/qua.2022.28</a>
Alternative languages
Result language
angličtina
Original language name
Microbial degradation of Pleistocene permafrost-sealed fossil mammal remains
Original language description
Paleontological remains retrieved from permafrost represent the most informative records of Pleistocene ecosystems. Different levels of past microbial activity affecting fossil material preservation are presented for two selected bone samples-an almost intact Bison sp. metacarpus (45.0 +/- 5.0 C-14 ka BP) and a weathered Equus sp. metacarpus (37.8 +/- 1.7 C-14 ka BP) from the recently exposed cryogenic geo-contexts in the Yana River basin, NE Yakutia. Diagenetic changes in bone porosity and chemical composition as a result of the past microbial activity were investigated by multiple analytical methods. In the bison bone, which was permafrost-sealed shortly after death of the animal and conserved for ca. 45 ka in a frozen state in a cryolithic formation, only superficial microbial degradation processes were detected. Progressive microbial attacks characterize the horse bone, which was exposed to MIS 3 sub-aerial biogenic decay and modern surficial weathering. This is evidenced by extensive bacterial micro-boring with the typical focal destructions, an increase in microbial porosity, and de-mineralized osseous zones due to waterlogged and poorly oxygenated past depositional conditions. New information contributes to better understanding of the diagenesis particularities and the associated chemical and biological agents of the fossil osteological assemblages with respect to their taphonomic and paleoenvironmental implications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10500 - Earth and related environmental sciences
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
QUATERNARY RESEARCH
ISSN
0033-5894
e-ISSN
1096-0287
Volume of the periodical
111
Issue of the periodical within the volume
PII S00335894220
Country of publishing house
US - UNITED STATES
Number of pages
23
Pages from-to
84-106
UT code for WoS article
000840361100001
EID of the result in the Scopus database
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