@article {897,
	title = {Stable isotope composition of Littoridina australis from the coast of Buenos Aires province, Argentina, during Holocene climatic fluctuations},
	journal = {Geobios},
	volume = {35},
	year = {2002},
	note = {563lxTimes Cited:9Cited References Count:27},
	month = {Jan-Feb},
	pages = {79-88},
	abstract = {Stable isotope (carbon and oxygen) analyses were performed on Littoridina australis shells collected from molluscan concentrations within Holocene littoral deposits along the Bonaerensian coastal area of Argentina (south-western Atlantic). Isotope data allow us to define two very different areas: the Samborombon Bay, where isotope composition of shells was mainly governed by mixing between marine and freshwater, and the Mar Chiquita lagoon, where the original brackish environment was dominated by evaporation of water that originated high isotope shell values. In both areas some isotope profiles show short and quite large oscillations in delta(18)O. Their origin may be tentatively explained as due to the changes in moisture regime that control freshwater supply. The results suggest that these deposits can represent natural archives potentially useful for palaeoclimate reconstruction. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.},
	keywords = {Argentina, Holocene, Littoridina australis, Molluscs, Palaeoenvironments, Stable isotopes},
	issn = {0016-6995},
	doi = {10.1016/S0016-6995(02)00011-6},
	author = {Aguirre, M. L. and Zanchetta, G. and Fallick, A. E.}
}
@article {898,
	title = {Systematics, distributional and palaeoenvironmental aspects of Littoridina australis(D{\textquoteright}Orbigny, 1835) (Mesogastropoda) in the Marine Quaternary of Argentina (South America)},
	journal = {Geobios},
	volume = {33},
	year = {2000},
	note = {id: 1372},
	chapter = {569-597},
	abstract = {LittoridinaSouleyet, 1852 (Mesogastropoda, Hydrobiidae) is the best represented genus among themolluscan taxa recorded in the marine late Quaternary from Argentina. It is distinguished by its ubiquity and high abundance along the coastal area from R{\'\i}o de La Plata down to southern Buenos Aires Province, both in beach ridge and coastal lagoon and estuarine facies and tidal flats. It is practically absent in Holocene littoral depositis from Patagonia and a very scarce component of the Pleistocene deposits from the whole Argentine coast. At present it is not recorded along the Argentine Sea or occurs only rarely in scarce quantities and restricted distribution, always associated to marginal marine environments. Most specimens collected from the marine Quaternary are assignable to Littoridina australis (D{\textquoteright}Orbigny, 1835), a dominant species (50-> 80\%) in the Holocene from La Plata down to Bah{\'\i}a San Blas (Buenos Aires Province). Due to the similarity of the original illustrations and of the type material of L. australis crassa, L. isabelleana, L. australis nana and L. conexa with L. australis, these taxa are considered synonyms. L. australis is proposed as a polytipic species with three main morphs (ecomorphs) which represent adaptations to different environmental conditions, mostly of salinty: {\textquoteleft}A{\textquoteright} (wide and short, very scarce, similar to L. charruana and L. conexa), {\textquoteleft}B{\textquoteright} (identical to the lectotypo de L. australis, similar to L. australis crassa; predominant) and {\textquoteleft}C{\textquoteright} (strongly elongated, similar to L. isabelleana and L. australis nana, with variations according to size; scarce). At present {\textquoteleft}B{\textquoteright} is dominant in mixohaline conditions, {\textquoteleft}C{\textquoteright} in polyhaline environments and {\textquoteleft}A{\textquoteright} in oligo-mixohaline sites. The morphological variations observed within the abundant material (fossil and modern), geographically and through time, would be a consequence of the influence over the littoral benthonic communities of environmental and climatic changes occurred during the late Quaternary: A trend was observed towards a major abundance of the morph {\textquoteleft}C{\textquoteright} (polyhaline) in the northern sector of the distribution, Samboromb{\'o}n Bay, and before ca. 5 ka A.P., whilst the morph {\textquoteleft}B{\textquoteright} (mixohaline) predominates in the central and southern sectors of the distribution, Mar Chiquita and Bah{\'\i}a Blanca, and is dominant after ca. 4.5 ka. This in turn would be a response to a progressive decrease of salinity along the littoral zone following the Climatic Optimum (Holocene {\textquoteleft}Hypsithermal{\textquoteright}, >7-5 ka A.P.), in coincidence with the sea-level (and temperature) decreasing trend until the present.},
	keywords = {Hydrobiidae, Late Quaternary, Littoridina australis, Palaeoecology, Southwestern Atlantic, Systematics},
	doi = {10.1016/S0016-6995(00)80031-5},
	author = {Aguirre, M. L. and Farinati, E. A.}
}
