Oxygen isotopes in terrestrial gastropod shells track Quaternary climate change in the American Southwest
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F21%3A00123431" target="_blank" >RIV/00216224:14310/21:00123431 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1017/qua.2021.18" target="_blank" >https://doi.org/10.1017/qua.2021.18</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/qua.2021.18" target="_blank" >10.1017/qua.2021.18</a>
Alternative languages
Result language
angličtina
Original language name
Oxygen isotopes in terrestrial gastropod shells track Quaternary climate change in the American Southwest
Original language description
Recent studies have shown the oxygen isotopic composition (delta O-18) of modern terrestrial gastropod shells is determined largely by the delta O-18 of precipitation. This implies that fossil shells could be used to reconstruct the delta O-18 of paleo-precipitation as long as the isotopic system, including the hydrologic pathways of the local watershed and the gastropod systematics, is well understood. In this study, we measured the delta O-18 values of 456 individual gastropod shells collected from paleowetland deposits in the San Pedro Valley, Arizona that range in age from ca. 29.1 to 9.8 ka. Isotopic differences of up to 2 parts per thousand were identified among the four taxa analyzed (Succineidae, Pupilla hebes, Gastrocopta tappaniana, and Vallonia gracilicosta), with Succineidae shells yielding the highest values and V. gracilicosta shells exhibiting the lowest values. We used these data to construct a composite isotopic record that incorporates these taxonomic offsets, and found shell delta O-18 values increased by similar to 4 parts per thousand between the last glacial maximum and early Holocene, which is similar to the magnitude, direction, and rate of isotopic change recorded by speleothems in the region. These results suggest the terrestrial gastropods analyzed here may be used as a proxy for past climate in a manner that is complementary to speleothems, but potentially with much greater spatial coverage.
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
10700 - Other natural sciences
Result continuities
Project
—
Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
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
104
Issue of the periodical within the volume
NOV
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
43-53
UT code for WoS article
000720829800006
EID of the result in the Scopus database
2-s2.0-85115982210