This paper reports the results of new malacological analyses from a thick tufa sequence at Direndall (Luxembourg). The study is temporally contextualised with radiocarbon dates and an age–depth model. The malacological study focuses on species associations to reconstruct palaeoenvironmental developments. The gradual appearance of several shade-demanding species reflects the expansion of forest environments during the early Holocene. After c. 7.5 cal. kyr BP, three phases of maximal expansion of shade-demanding species are interspersed with two phases of decline of these taxa dated between c. 7.1 and 6.5 cal. kyr BP and between c. 3.5 and 2.4 cal. kyr BP. Malacological data are discussed with previously published calcite stable isotope data from the same sequence. Strong correlations between malacological data and δ13C profile are highlighted over the whole sequence. Combined influences of local environmental conditions and regional climatic trends are emphasised. The sequence provides a palaeoenvironmental succession free of any anthropic influence.

中文翻译：

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从软体动物演替和稳定同位素记录重建的 Direndall tufa（卢森堡）的全新世古环境

本文报告了对 Direndall（卢森堡）厚厚的凝灰岩层序的新苹果糖学分析结果。该研究在时间上与放射性碳日期和年龄深度模型相关联。Malacological 研究侧重于物种关联以重建古环境发展。几种需要遮荫的物种的逐渐出现反映了全新世早期森林环境的扩张。在 C. 7.5 卡路里 kyr BP，需要遮荫的物种的三个最大扩张阶段穿插着这些分类群的两个下降阶段，这些阶段可追溯到 c. 7.1 和 6.5 卡路里 kyr BP 和 c 之间。3.5 和 2.4 卡路里 基尔 BP。Malacological 数据与之前公布的相同序列的方解石稳定同位素数据进行了讨论。在整个序列中突出显示了malacological 数据和δ13C 谱之间的强相关性。强调当地环境条件和区域气候趋势的综合影响。该序列提供了不受任何人为影响的古环境演替。