High-resolution records of growth temperature and life history of two Nacella limpet species, Tierra del Fuego, Argentina
High-resolution records of growth temperature and life history of two Nacella limpet species, Tierra del Fuego, Argentina
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阿根廷火地岛两种 Nacella 帽贝物种的生长温度和生活史的高分辨率记录
DOI:
10.1016/j.palaeo.2019.109526
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Bas, Maria
中科院分区:
文献类型:
--
作者:
Nicastro, Adam;Surge, Donna;Briz i Godino, Ivan;Álvarez, Myrian;Schöne, Bernd R.;Bas, Maria
Stable isotope ratios in patelloid limpets of the genusPatellahave been established as proxies for coastal environmental change at sub-monthly resolution along the eastern North Atlantic and Mediterranean Sea.Nacella deaurata(Gmelin 1791) andN.magellanica(Gmelin 1791) are common intertidal species of patelloid limpets inhabiting the coast of Tierra del Fuego, Argentina/Chile and are commonly found in Holocene archaeological deposits. Here, we examine oxygen and carbon isotope ratios (δ18Oshelland δ13Cshell, respectively) of modern specimens ofN.deaurataandN.magellanicato test the hypotheses that: 1) they form their shells in isotopic equilibrium with ambient water; and 2) prominent growth lines form annually. Based on growth margin analysis of δ18Oshellvalues, we identified a positive offset of 1.3 ± 0.4‰ (N.deaurata) and 1.3 ± 0.3‰ (N.magellanica) from expected equilibrium, similar to other patelloid limpets. Because the offset is relatively consistent between observed and expected values, it can be taken into account to reliably reconstruct growth temperature. Seawater temperature estimated from oxygen isotope time series data falls within the observed range. Thus,N.deaurataandN.magellenicashells serve as reliable proxy archives of seasonal variation in coastal seawater temperature. Time series of δ13Cshellvalues do not vary seasonally in all shells; hence, the influence on its variation requires further study. The timing of prominent growth lines contextualized by the δ18Oshelltime series form twice a year and therefore cannot be used to estimate lifespan. Future isotopic analysis of archaeologicalNacellashells can potentially provide much needed information about Holocene climate change at sub-monthly resolution from high-latitude South American locations, and contribute to our understanding of human behavior and human-climate interactions.
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DOI:
10.1016/j.palaeo.2011.12.016
发表时间:
2012-02
期刊:
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子:
--
作者:
Ting Wang;D. Surge;S. Mithen
通讯作者:
Ting Wang;D. Surge;S. Mithen
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
A. P. Wheeler
通讯作者:
A. P. Wheeler
影响因子:
5.8
作者:
D. Surge;Ting Wang;Igor Gutiérrez;P. Kelley
通讯作者:
P. Kelley
DOI:
--
发表时间:
1982
期刊:
影响因子:
--
作者:
J. Killingley;W. Newman
通讯作者:
W. Newman
DOI:
--
发表时间:
1980
期刊:
影响因子:
--
作者:
G. Wefer;J. Killingley
通讯作者:
J. Killingley