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Radiocarbon Ecology of the Land Snail Helix Melanostoma in Northeastern Libya

  • E A Hill (a1), P J Reimer (a1), C O Hunt (a2), A L Prendergast (a3) and G W Barker (a4)...
Abstract
Abstract

Terrestrial gastropods are problematical for radiocarbon (14C) measurement because they tend to incorporate carbon from ancient sources as a result of their dietary behavior. The 14C ecology of the pulmonate land snail, Helix melanostoma in Cyrenaica, northeastern Libya, was investigated as part of a wider study on the potential of using terrestrial mollusk shell for 14C dating of archaeological deposits. H. melanostoma was selected out of the species available in the region as it has the most predictable 14C ecology and also had a ubiquitous presence within the local archaeology. The ecological observations indicate that H. melanostoma has a very homogenous 14C ecology with consistent variations in F14C across sample sites controlled by availability of dietary vegetation. The majority of dated specimens from non-urbanized sample locations have only a small old-carbon effect, weighted mean of 476±48 14C yr, with between ~1% and 9% of dietary F14C from non-organic carbonate sources. Observed instabilities in the 14C ecology can all be attributed to the results of intense human activity not present before the Roman Period. Therefore, H. melanostoma and species with similar ecological behavior are suitable for 14C dating of archaeological and geological deposits with the use of a suitable offset.

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*Corresponding author. Email: e.hill@qub.ac.uk.
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Selected Papers from the 8th Radiocarbon & Archaeology Symposium, Edinburgh, UK, 27 June–1 July 2016

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References
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AnketellJM, GhellaliSM, GilbertsonDD, HuntCO. 1995. Quaternary wadi and floodplain sequences of Tripolitania, northwest Libya: a synthesis of their stratigraphic relationships, and their implications for landscape evolution. In: Woodward JC, Macklin MG, Lewin J, editors. Mediterranean Quaternary River Environments. Rotterdam: Balkema. p 231244.
AugustoL, De SchriverA, VesterdalL, SmolanderA, PrescottC, RangerJ. 2015. Influences of evergreen gymnosperm and deciduous angiosperm tree species on the functioning of temperate and boreal forests. Biological Reviews 90(2):444466.
BalakrishnanM, YappCJ. 2004. Flux balance models for the oxygen and carbon isotope compositions of land snail shells. Geochimica et Cosmochimica Acta 68:20072024.
BaldiniLM, WalkerSE, BruceR, BaldiniJUL, CroweDE. 2007. Isotope ecology of the modern land snails Cerion, San Salvador, Bahamas: preliminary advances toward establishing a low-latitude island palaeoenvironmental proxy. Palaios 22:174187.
BarkerG, HuntCO, ReynoldsT. 2007. The Haua Fteah, Cyrenaica (northeast Libya): renewed investigations of the cave and its landscape. Libyan Studies 38:222.
BarkerG, BasellL, BrooksI, BurnL, CartwrightC, ColeF, DavisonJ, FarrL, GrunR, HamiltonR, HuntC, InglisR, JacobsZ, LeitchV, MoralesJ, MorleyI, MorleyM, PawleyS, StimpsonC, TwatiM, Van der VeenM. 2008. The Cyrenaican Prehistory Project 2008: the second season of investigations of the Haua Fteah cave and its landscape, and further results from the initial 2007 fieldwork. Libyan Studies 39:175221.
BarkerG, AntoniadouA, ArmitageSJ, BrooksI, CandyI, ConnellK, DoukaK, FarrL, HillE, HuntCO, InglisR, JonesS, LaneC, LucariniG, MeneelyJ, MoralesJ, MutriG, PrendergastAL, RabettR, ReadeH, ReynoldsT, RussellN, SimpsonD, SmithB, StimpsonC, TwatiM, WhiteK. 2010. The Cyrenaican Prehistory Project 2010: The fourth season of investigations of the Haua Fteah cave and its landscape, and further results from the 2007–2009 fieldwork. Libyan Studies 41:6388.
BarkerG, BennettP, FarrL, HillE, HuntCO, LucariniG, MoralesJ, MutriG, PrendergastAL, PryorA, RabettR, ReynoldsT, Spry-MarquesP, TwatiM. 2012. The Cyrenaican Prehistory Project 2012: The fifth season of investigation of the Haua Fteah cave. Libyan Studies 43:122.
BevingtonPR. 1969. Data Reduction and Error Analysis for the Physical Sciences. New York: McGraw-Hill Inc.
BrandtRA. 1959. Die Helicellinae der Cyrenaika. Archiv für Molluskenkunde 88:81150.
ColoneseAC, ZanchettaG, PerlèsC, DrysdaleRN, ManganelliG, BaneschiI, DotsikaE, ValladasH. 2013. Deciphering late Quaternary land snail shell δ18O and δ13C from Franchthi Cave (Argolid, Greece). Quaternary Research 80:6675. http://dx.doi.org/10.1016/j.yqres.2013.03.006
ColoneseAC, ZanchettaG, FallickAE, ManganelliG, Lo CascioP, HaussmanN, BaneschiI, RegattieriE. 2014. Oxygen and carbon isotopic composition of modern terrestrial gastropod shells from Lipari Island, Aeolian Archipelago (Sicily). Palaeogeography, Palaeoclimatology, Palaeoecology 394:119127. http://dx.doi.org/10.1016/j.palaeo.2013.12.003
DraparnaudJPR. 1801. (an IX) Tableau des Mollusques terrestres et fluviatiles de la France. Montpellier et Paris. 116 p.
De JorgeFB, HaeserPE. 1968. Further biochemical studies on the snail Strophocheilus oblongus musculus Becquaert. Comparative Biochemistry and Physiology 26:627637.
El-HawatAS, AbdulsamadEO. 2004. The geology of Cyrenaica: A field seminar: 3rd Sedimentary Basins of Libya Symposium. Geology of East Libya, Benghazi, November 21–23, 2004 . Field guide. 130 p.
FarrL, LaneR, AbdulazeezF, BennettP, HolmanJ, MarasiA, PrendergastA, Al-ZweyiM, BarkerG. 2014. The Cyrenaican Prehistory project 2013: the seventh season of excavations in the Haua Fteah. Libyan Studies 45:163173.
GoodfriendGA. 1987. Radiocarbon age anomalies in shell carbonate of land snails from semi-arid areas. Radiocarbon 29(2):159167.
GoodfriendGA, EllisGL. 2002. Stable carbon and oxygen isotopic variations in modern Rabdotus land snail shells in the southern Great Plains, USA, and their relation to environment. Geochimica et Cosmochimica Acta 66:19872002.
GoodfriendGA, HoodDG. 1983. Carbon isotope analysis of land snail shells: implications for carbon sources and radiocarbon dating. Radiocarbon 25(3):810830.
HegazyAK, BoulosL, KabielHF, SharashyOS. 2011. Vegetation and species altitudinal distribution in al-Jabal al-Akhdar landscape, Libya. Pakistan Journal of Botany 43(4):18851898.
HillE. 2010. Ecological sampling for land snails outside the Haua Fteah cave. In Barker G, Antoniadou A, Armitage SJ, Brooks I, Candy I, Connell K, Douka K, Farr L, Hill E, Hunt CO, Inglis R, Jones S, Lane C, Lucarini G, Meneely J, Morales J, Mutri G, Prendergast AL, Rabett R, Reade H, Reynolds T, Russell N, Simpson D, Smith B, Stimpson C, Twati M, White K. 2010. The Cyrenaican Prehistory Project 2010: The fourth season of investigations of the Haua Fteah cave and its landscape, and further results from the 2007–2009 fieldwork. Libyan Studies 41:8384.
HillEA. 2015. The Radiocarbon Dating of Terrestrial Molluscs in North East Libya [unpublished PhD thesis]. Queens University Belfast.
HuntCO, GilbertsonDD, DonohueRE. 1992. Palaeobiological evidence for agricultural soil erosion in the Montagnola Senese, Italy. In: Bell M, Boardman J, editors. Past and Present Soil Erosion: Archaeological and Geographical Perspectives. Oxford: Oxbow. Oxbow Monographs. 22:163174.
HuntCO, GarrardAN. 2013. The Late Palaeolithic–geological context. In: Garrard AN, Byrd BF, editors. Beyond the Fertile Crescent. Late Palaeolithic and Neolithic Communities of the Jordanian Steppe: The Azraq Basin Project, Vol. 1. Oxford: Oxbow. Levant Supplementary Series 13:54–135.
HuntCO, GilbertsonDD, HillEA, SimpsonD. 2015. Sedimentation, re-sedimentation and chronologies in archaeologically important caves: problems and prospects. Journal of Archaeological Science 56:109116.
HuaQ, BarbettiM, RakowskiAZ. 2013. Atmospheric radiocarbon for the period 1950–2010. Radiocarbon 55(4):20592072.
KeaveneyEM, ReimerPJ. 2012. Understanding the variability in freshwater radiocarbon reservoir offsets: a cautionary tale. Journal of Archaeological Science 39(5):13061316.
KerneyMP, CameronRA, JungbluthJH. 1983. Die Landschnecken Nord-Und Mitteleuropas. New Jersey: Wiley-Blackwell.
LevinI, KromerB, HammerS. 2013. Atmospheric Δ14CO2 trend in Western European background air from 2000 to 2012. Tellus B 2013:65.
MagaritzM, HellerJ, VolokitaM. 1981. Land-air boundary environment as recorded by the 18O/16O and 13C/ 12C isotope ratios in the shells of land snails. Earth and Planetary Science Letters 52:101106.
McConnaugheyTA, GillikinDP. 2008. Carbon isotopes in mollusk shell carbonates. Geo-Marine Letters 28:287299.
MetrefS, RousseauDD, BentalebI, LabonneM, Vianey-LiaudM. 2003. Study of the diet effect on δ13C of shell carbonate of the land snail Helix aspersa in experimental conditions. Earth and Planetary Science Letters 211:381393.
MillardAR. 2014. Conventions for reporting radiocarbon determinations. Radiocarbon 56(2):555559.
PflegerV. 1984. Schnecken und Muscheln Europas. Land und Sußwasserarten. Stuttgart: Kosmos.
PigatiJS, QuadeJ, ShahananTM, HaynesCVJr. 2004. Radiocarbon dating of minute gastropods and new constraints on the timing of late Quaternary spring discharge deposits in southern Arizona, USA. Palaeogeography Palaeoclimatology Palaeoecology 204:3345.
PigatiJS, RechJA, NekolaJC. 2010. Radiocarbon dating of small terrestrial gastropod shells in North America. Quaternary Geochronology 5:519532.
PrendergastA. 2013. Late Pleistocene to Holocene human-environment interaction in the south-eastern Mediterranean: Stable isotope analysis of mollusc shells from Haua Fteah, Libya and Ksar Akil, Lebanon [unpublished PhD thesis]. University of Cambridge.
PrendergastAL, StevensRE. 2014. Molluscs (isotopes): analyses in environmental archaeology. The Encyclopaedia of Global Archaeology. Berlin: Springer. p 50105019.
PrendergastAL, StevensRE, HillEA, BarkerGW, HuntC, O’ConnellTC. 2014. Carbon isotope signatures from land snail shells: Implications for palaeovegetation reconstruction in the eastern Mediterranean. Quaternary International. 01/2015. DOI:http://dx.doi.org/10.1016/j.quaint.2014.12.053.
PrendergastAL, StevensRE, BarkerGW, O’ConnellTC. 2015. Oxygen isotope signatures from land snail (Helix melanostoma) shells and body fluid: proxies for reconstructing Mediterranean and North African rainfall. Chemical Geology 409:8798.
QuartaG, RomanielloL, D’EliaM, MastronuzziG, CalcagnileL. 2007. Radiocarbon age anomalies in pre- and post-bomb land snails from the coastal Mediterranean basin. Radiocarbon 49(2):817826.
RabettR, FarrLJ, HillE, HuntCO, LaneR, MoseleyH, StimpsonC, BarkerG. 2012. The Cyrenaica Prehistory Project 2012: The sixth season of excavations at the Haua Fteah cave. Libyan Studies 44:113125.
RakovanMT, RechJA, PigatiJS, NekolaJC, WilesGC. 2013. An evaluation of Mesodon and other larger terrestrial gastropod shells for dating late Holocene and historic alluvium in the Midwestern USA. Geomorphology 193:4756.
ReimerPJ, BrownTA, ReimerRW. 2004. Discussion: reporting and calibration of post-bomb 14C data. Radiocarbon 46(3):1299--1304.
RomanielloL, QuartaG, MastronuzziG, D’EliaM, CalcagnileL. 2008. 14C age anomalies in modern land snails shell carbonate from Southern Italy. Quaternary Geochronology 3:6875.
ŞenZ, EljadidAG. 1999. Rainfall distribution function for Libya and rainfall prediction. Hydrological Sciences Journal 44(5):665680.
SimpsonD. 2016. The Palynology of the Haua Fteah, Libya [unpublished PhD thesis]. Queen’s University Belfast.
SlotaPJJr, JullAJT, LinickTW, ToolinLJ. 1987. Preparation of small samples for 14C accelerator targets by catalytic reduction of CO. Radiocarbon 29(2):303306.
SouletG, SkinnerLC, BeaupreSR, GalyV. 2016. A Note on reporting of reservoir 14C disequilibria and age offsets. Radiocarbon 58(1):205211.
StottLD. 2002. The influence of diet on the δ13C of shell carbon in the pulmonate snail Helix aspersa . Earth and Planetary Science Letters 195:249259.
StuiverM, PolachHA. 1977. Discussion: reporting of 14C data. Radiocarbon 19(3):355363.
TamersMA. 1970. Validity of radiocarbon dates on terrestrial snail shells. American Antiquity 35:94100.
VogelJS, SouthonJR, NelsonDE. 1987. Catalyst and binder effects in the use of filamentous graphite for AMS. Nuclear Instruments and Methods in Physics Research B 29(1–2):5056.
XuB, GuZ, HanJ, LiuZ, PeiY, LuY, WuN, ChenY. 2010. Radiocarbon and stable isotope analyses of land snails from the Chinese loess plateau: environmental and chronological implications. Radiocarbon 52(1):149156.
XuB, GuZ, HanJ, HaoQ, LuY, WangL, WuN, PengY. 2011. Radiocarbon age anomalies of land snail shells in the Chinese Loess Plateau. Quaternary Geochronology 6:383389.
YanesY, DelgadoA, CastilloC, AlonsoMR, IbanezM, De la NuezJ, KowalewskiM. 2008. Stable isotope (δ18O, δ13C, and δD) signatures of recent terrestrial communities from a low-latitude, oceanic setting: endemic land snails, plants, rain, and carbonate sediments from the eastern Canary Islands. Chemical Geology 249:377392.
YanesY, IzetaAD, CattaneoR, CostaT, GordilloS. 2014. Holocene (~4.5-1.7 cal. Kyr BP) palaeoenvironmental conditions in central Argentina inferred from entire shell and intra-shell stable isotope composition of terrestrial gastropods. Holocene 24(10):11931205.
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