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

数据集描述：初步评估表明，在浮选过程中回收了五种有机物质，包括炭化种子、木炭、动物骨骼与牙齿、鱼鳞及贝类。综合考虑重质残留物与细浮选物，对植物遗存可得出以下观察：木炭在样本中占比达到69%（49个样本中的34个：对于高分辨率样本，在20个样本中发现，而对于低分辨率样本，在14个样本中发现）；炭化种子存在于25个样本中，占比为51%（对于高分辨率样本，在9个样本中发现，对于低分辨率样本，在16个样本中发现）。就动物遗存而言，贝类在37个样本中被记录，占比达到75%（对于高分辨率样本，在22个样本中发现，对于低分辨率样本，在15个样本中发现），紧随其后的是动物骨骼与牙齿，在49个样本中占32%或16个（对于高分辨率样本，在15个样本中发现，对于低分辨率样本，在1个样本中发现）。最后一组由鱼鳞构成，在本研究中仅记录到1片鱼鳞，占样本的2%。同时，土壤沉积物的颜色也被记录，包括灰色、黄红色、黑色、棕色及灰白色。以上结果呈现于数据集的Sheet 1，描述了从高分辨率样本中收集的有机物质，而Sheet 2则描述了从低分辨率样本中收集的材料，两者均来自2023年的Pliska考古发掘。每个发现类别均以丰度值表示，根据以下体系：图1代表绝对值介于1至10之间；图2分配给11至20之间的值；图3描述21至50之间的绝对值，而图4则归属于51至100之间的值。（Reitz 和 Shackley，2012）。

参考文献：
1. French, D. H.（1971）《水筛实验》，安纳托利亚研究，第XXI卷，第59–64页。DOI：https://doi.org/10.2307/3642629
2. Reitz, E.，Shackley, M.（2012）《环境考古学》。斯普林格出版社，伦敦。
3. Williams, D.（1973）《Siraf的浮选》。古代，第47卷，第188期，第288–292页。DOI：https://doi.org/10.1017/S0003598X00039132