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@article{1814918,
author = {Rech, Jason A. and Pigati, Jeffrey S. and Springer, Kathleen B. and Bosch, Stephanie and Nekola, Jeffrey Clark and Yanes, Yurena},
article_location = {NEW YORK},
article_number = {NOV},
doi = {http://dx.doi.org/10.1017/qua.2021.18},
keywords = {Terrestrial gastropods; Oxygen isotopes; Paleoclimate; Paleowetland deposits},
language = {eng},
issn = {0033-5894},
journal = {Quaternary Research},
title = {Oxygen isotopes in terrestrial gastropod shells track Quaternary climate change in the American Southwest},
url = {https://doi.org/10.1017/qua.2021.18},
volume = {104},
year = {2021}
}
TY - JOUR
ID - 1814918
AU - Rech, Jason A. - Pigati, Jeffrey S. - Springer, Kathleen B. - Bosch, Stephanie - Nekola, Jeffrey Clark - Yanes, Yurena
PY - 2021
TI - Oxygen isotopes in terrestrial gastropod shells track Quaternary climate change in the American Southwest
JF - Quaternary Research
VL - 104
IS - NOV
SP - 43-53
EP - 43-53
PB - Cambridge University Press
SN - 00335894
KW - Terrestrial gastropods
KW - Oxygen isotopes
KW - Paleoclimate
KW - Paleowetland deposits
UR - https://doi.org/10.1017/qua.2021.18
N2 - 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.
ER -
RECH, Jason A., Jeffrey S. PIGATI, Kathleen B. SPRINGER, Stephanie BOSCH, Jeffrey Clark NEKOLA and Yurena YANES. Oxygen isotopes in terrestrial gastropod shells track Quaternary climate change in the American Southwest. \textit{Quaternary Research}. NEW YORK: Cambridge University Press, 2021, vol.~104, NOV, p.~43-53. ISSN~0033-5894. Available from: https://dx.doi.org/10.1017/qua.2021.18.
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