Land snail fauna and Holocene environmental changes in Mediterranean France: A digest from three representative sedimentary sequences

Magnin, Frédéric; Bonnet, Stéphane; Cenzon‐Salvayre, Carine

doi:10.1016/j.quascirev.2021.107303

Cited by 2 publications

(2 citation statements)

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“…As this feature is undetectable in fossil shells, all specimens that could be attributed to one or the other species were grouped under the designation Microxeroma gna lo wei/Xerotricha conspurcata ( Fig. 5 J-L) (see Magnin & Bonnet, 2014 ;Magnin et al , 2022 ). Among Geomitridae, Xerotricha zujarensis ( Ortiz de Zárate López, 1950 ) ( Fig.…”

Section: Mollusc Identificationmentioning

confidence: 99%

“…To date, however, fossils of terrestrial molluscs have been poorly utilized to question and discuss the biogeographical history of the western Mediterranean Basin, despite their common preservation in a variety of calcareous Quaternary deposits. Fossil shells provide unique opportunities to investigate past environments and climate evolution across various scales ( Ložek, 1986 ;Goodfriend, 1992 ;Preece, 1997 ;Ju ři čkova et al , 2014 ;Granai et al ., 2020 ;Horsák et al , 2020 ;Richter et al , 2020 ;Magnin, Bonnet & Cenzon-Salvayre, 2022 ). Furthermore, Quaternary nonmarine mollusc fossil records provide crucial material to better understand the diversity and distribution of modern European molluscs ( Preece, 1998 ;Limondin-Lozouet & Preece, 2014 ;Kowalewski, 2017 ;.…”

Section: Introductionmentioning

confidence: 99%

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Holocene molluscan successions from southeastern Spain (Galera, Andalusia): a palaeoenvironmental framework and a palaeobiogeographic resource of the Granada UNESCO Geopark

Wackenheim

Richter

Limondin-Lozouët

et al. 2023

Journal of Molluscan Studies

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In Spain, Holocene deposits are widespread, and although they have been extensively investigated by quaternarists for several decades, their malacological content has remained scarcely studied. In the framework of a German–French–Spanish collaboration, alluvial and tufa sequences in the Baza Basin, Andalusia, Spain are analysed with a multidisciplinary approach, including the analysis of the molluscan successions. Holocene fossil molluscs of the studied sequences reveal a rich assemblage of 53 species, among which 33 are terrestrial. Between 10,000 and 9,000 cal. yr BP, the Galera succession indicates strong river dynamics that prevented the establishment of adjacent terrestrial habitats. The Early to Middle Holocene transition reflects the continuity of humid environments. The Middle Holocene fauna reveals a decrease in humidity accompanied by slight evidence of drier habitats in the near periphery of the floodplain/tufa deposits from 5,900 cal. yr BP onwards. Late Holocene deposits (around 3,000 to 300 cal. yr BP) point to dry and open biotopes indicated by the appearance of xero-resistant and mesophilous gastropods. The palaeoenvironmental reconstruction inferred from the malacocenoses allows discussing local to regional responses of the malacofauna to environmental changes and is consistent with past regional environmental and climatic trends identified in southeastern Spain. The fossil record at Galera offers new evidence to question and clarify the modern range of endemic taxa whose distributions are fragmented. By following a ‘conservation paleobiology’ approach, the analysis of the mollusc fossil record at Galera provides (1) baselines to determine the natural variability of ecosystems and their response to environmental changes, (2) data to discuss and clarify species distribution evolution and (3) arguments to support conservation priorities.

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Section: Mollusc Identificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Holocene molluscan successions from southeastern Spain (Galera, Andalusia): a palaeoenvironmental framework and a palaeobiogeographic resource of the Granada UNESCO Geopark

Wackenheim

Richter

Limondin-Lozouët

et al. 2023

Journal of Molluscan Studies

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What do Lateglacial and Holocene land snail communities tell us about the palaeoenvironments of Mediterranean France?

Magnin,

Martin,

Ollivier

et al. 2024

Boreas

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Southeastern France occupies a key biogeographical position on the lower Rhone corridor, at the interface between southern and northern Europe. It is also at the heart of long‐standing ecological debates about the respective roles of natural and human drivers in shaping the Mediterranean landscape. Molluscan analysis may represent a valuable contribution to this issue. In this paper, land snail assemblages from three calcareous tufa deposits in the Luberon mountain were used to reconstruct Lateglacial and Holocene palaeoenvironments. The Lateglacial communities only differ from the Pleniglacial ones by the development of hygrophilic snails. We note a high moisture budget at the end of the Lateglacial Interstadial (LGI). A patchy, steppe landscape is attested. A time lag in recolonization by woodland species during the LGI is conceivable. The postglacial woodland assemblages then trace a laborious reassembly of forest snail communities. It takes place mainly between c. 8000 and c. 6600 cal. a BP with spatial disparities and delayed recruitments. The French Mediterranean region has not benefitted from the macrorefugia that it would have sheltered or with which it would have been close. Woodlands, however, appear progressively more closed and complex c. 8000 cal. a BP. They reached their optimum c. 7500 to 7400 cal. a BP although their canopy seems to have stayed quite open. Anthropization remained weak during the Early Neolithic. A significant woodland opening is observed in the Early–Middle Neolithic. Human impact becomes clear from the Late Neolithic. Nevertheless, there are substantial differences compared with Basse‐Provence, where a more marked openness of the landscape from 7000 cal. a BP was accompanied by the development of Mediterranean synanthropic snails. The molluscan successions of the Luberon mountain should be a reference for the development of the Lateglacial and Holocene malacofauna in the SE of France, at the northern boundary of the western Mediterranean domain.

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Land snail fauna and Holocene environmental changes in Mediterranean France: A digest from three representative sedimentary sequences

Cited by 2 publications

References 73 publications

Holocene molluscan successions from southeastern Spain (Galera, Andalusia): a palaeoenvironmental framework and a palaeobiogeographic resource of the Granada UNESCO Geopark

Holocene molluscan successions from southeastern Spain (Galera, Andalusia): a palaeoenvironmental framework and a palaeobiogeographic resource of the Granada UNESCO Geopark

What do Lateglacial and Holocene land snail communities tell us about the palaeoenvironments of Mediterranean France?

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