Open AccessFood Water Contribution to the Oxygen Isotope Composition of Land Snail Body Water and Its Environmental Implication
Author(s) -
Zhang N.,
Yamada K.,
Yoshida N.
Publication year - 2018
Publication title -
geochemistry, geophysics, geosystems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.928
H-Index - 136
ISSN - 1525-2027
DOI - 10.1029/2018gc007468
Subject(s) - land snail , snail , water body , isotopes of oxygen , water balance , flux (metallurgy) , stable isotope ratio , environmental science , ecology , composition (language) , geology , environmental chemistry , biology , chemistry , geochemistry , environmental engineering , physics , geotechnical engineering , organic chemistry , quantum mechanics , linguistics , philosophy
This is the first study focused on the oxygen isotope composition (δ 18 O) of laboratory‐cultivated land snails. Land snails were raised under various controlled environmental parameters, permitting an evaluation of the effectiveness of the flux balance model developed by Balakrishnan and Yapp ([Balakrishnan, M., 2004]). The slope of body water δ 18 O values vs. provided water δ 18 O values, suggest that food water is an important source (19‐37%) of land snail body water. However, the flux balance model does not account for this water source. We suggest a revised framework to understand the sources and controlling factors of the land snail body fluid, which should be helpful to future studies on paleo‐environment reconstruction using land snail fossils. This investigation also indicates that snails living in non‐optimal conditions (e.g. low temperature) can adapt their biological behaviors to the environment, which will in turn affect the δ 18 O values of both body fluid and shells, giving rise to δ 18 O values which deviate from those of snails living at optimal temperatures.