Dataset of findings recovered through water flotation at Pliska, North-Eastern Bulgaria

Dataset description The initial assessment after the flotation shows that five types of organic materials were recovered, including charred seeds, wood charcoal, animal bone and teeth, fish scales and molluscs. Considering both the heavy residue and fine flot, the following observation can be made regarding the vegetal remains. Wood charcoal is present in 69% of the samples (in 34 samples out of 49: for the HR – in 20 samples, while for the F – in 14 samples); charred seeds are present in 25 samples or 51% (for the HR – in 9 samples, for the F – in 16 samples). In terms of faunal remains, molluscs are registered in 37 of the samples for 75% (for the HR – in 22 samples, for the F – in 15 samples), followed by animal bones and teeth, that are registered in 32% or 16 out of 49 samples (for the HR – in 15 samples and for the F – in 1 sample). The final group is presented by fish scales, in our case only one scale recorded in the HR fraction, representing 2% of the samples. The soil sediment colour was also recorded, including grey, yellow-red, black, brown and white-grey. The above results are presented in Sheet 1 of the dataset, which describes the organic materials, collected from the HR, while Sheet 2 is describing the materials collected from the F fraction, both recovered from the 2023 Pliska excavation. Each finding category is represented by an abundance value, according to the following system: figure 1 marks absolute values ranging between 1 and 10; figure 2 assigns to values between 11 and 20; figure 3 describes absolute values between 21 and 50, while figure 4 is attributed to values between 51 and 100 (Reitz and Shackley, 2012). Bibliography: 1. French, D. H., (1971) An experiment in water-sieving, Anatolian Studies, XXI, pp. 59–64. DOI: https://doi.org/10.2307/3642629 2. Reitz, E., Shackley, M. (2012) Environmental Archaeology. Springer. London 3. Williams, D. (1973) Flotation at Siraf. Antiquity, Volume 47, Issue 188, pp. 288–292. DOI: https://doi.org/10.1017/S0003598X00039132数据集说明 浮选法后的初步评估显示，本次共回收五类有机质遗存，包括炭化种子、木炭、动物骨骼与牙齿、鱼鳞以及软体动物遗骸。结合重残留相（heavy residue, HR）与细浮选相（fine flot, F）的分析结果，关于植物遗存可得如下观察结果：木炭在69%的样品中被检出（49份样品中共34份检出：重残留相样品20份，细浮选相样品14份）；炭化种子则在25份样品中被检出，占比51%（重残留相样品9份，细浮选相样品16份）。 动物遗存方面，软体动物遗骸在75%的样品（37份）中被检出（重残留相22份，细浮选相15份）；其次为动物骨骼与牙齿，在32%的样品（49份中共16份）中被检出（重残留相15份，细浮选相仅1份）。最后一类遗存为鱼鳞，本次研究仅在重残留相组分中检出1片鱼鳞，占样品总数的2%。本次研究同时记录了土壤沉积物的颜色，包括灰色、黄红色、黑色、棕色以及灰白色。 上述结果见于数据集的工作表1，该表记录了从重残留相中回收的有机质遗存；工作表2则记录了从细浮选相组分中回收的遗存，两类遗存均出土于2023年普利斯卡（Pliska）遗址的发掘工作中。所有遗存类别均以丰度值表征，丰度分级标准如下：等级1对应1~10的绝对数值；等级2对应11~20的绝对数值；等级3对应21~50的绝对数值；等级4对应51~100的绝对数值（Reitz与Shackley，2012）。 参考文献： 1. French, D. H.，1971年，《水筛实验》，《安纳托利亚研究》（Anatolian Studies），第21卷，第59-64页。DOI: https://doi.org/10.2307/3642629 2. Reitz, E.，Shackley, M.，2012年，《环境考古学》，施普林格出版社，伦敦 3. Williams, D.，1973年，《西拉夫遗址浮选工作》，《古代》（Antiquity），第47卷，第188期，第288-292页。DOI: https://doi.org/10.1017/S0003598X00039132