The preservation status of the mollusc shell accumulation of sandy barriers at the Amvrakikos Gulf lagoon complex was studied. Taphonomic shell analysis of dead mollusc depositions was undertaken in the summer of 2016 at Amvrakikos lagoon complex within the Tsoukalio and Logarou sandy barriers, which showed significant differences among the major abundant bivalve species of Cerastoderma glaucum and Polititapes aureus. Both hydrodynamic transport and differential exposure to environmental conditions differ among the accumulated shells depositions of the lagoonal sandy barriers. The heavier and more durable shells of C. glaucum are frequently found concentrated at the Tsoukalio lagoon accumulations and show a higher intensity of fragmentation whereas at Logarou lagoon the bioerosion and abrasion is more intense. On the other hand, the lighter, thinner, and thus more fragile shells of P. aureus show higher concentration and intensity of fragmentation and bioerosion at Logarou lagoon sandy barriers.

The continuous deposition of shells at Tsoukalio lagoonal sandy barriers, contrary to the long-term deposition at Logarou lagoon, explains the different types of accumulations among the lagoons which are attributed to the geomorphology of the sandy shores as well as the morphological characteristics of the different shells.

研究了Amvrakikos海湾泻湖区砂质屏障的软体动物壳堆积的保存状态。2016年夏季，在Tsoukalio和Logarou沙质屏障内的Amvrakikos泻湖复合体上进行了死软体动物沉积的壳层分析，这显示了Cerastoderma glaucum和Polititapes aureus的主要丰富双壳类之间的显着差异。在泻湖沙质屏障的累积壳沉积物中，流体动力传输和对环境条件的差异暴露都不同。C. glaucum的较重且更耐用的壳经常被发现集中在Tsoukalio泻湖的堆积物上，并显示出更高的破碎强度，而在Logarou泻湖中，生物侵蚀和磨损更为强烈。另一方面，更轻，更薄，因此更易碎的金黄色葡萄球菌壳在Logarou泻湖沙质屏障处表现出更高的浓度和更高的破碎与生物侵蚀强度。

贝壳在Tsoukalio泻湖沙质屏障上的连续沉积，与Logarou泻湖的长期沉积相反，解释了泻湖之间堆积的不同类型，这归因于沙质海岸的地貌以及不同形态的特征贝壳。