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Recent Submissions
Specifics of the biocultural approach and its potential for interdisciplinary studies: on the example of anthropobiotic communit
(Plovdiv University Press "Paisii Hilendarski", 2025-06-30) Penkova, Stoyka; Stoilova, Elitza; Tasheva, Milena
The article makes an attempt at an analytical interpretation of the specifics of the biocultural approach and its potential for interdisciplinary research. Starting from the premise that the interest is incessantly growing in studies viewing the link between man and environment beyond the traditional disciplinary borders, and also that combining the expertise of natural and social sciences is in increasingly greater demand, this article will show the importance of the biocultural approach as an analytic instrument working on the borders between ecology, biology, anthropology and sociology. Linking into one ecological knowledge, cultural practices, and social structures, this approach fosters the analytic and methodological overcoming of hard limits between natural and social sciences. The article dwells on the case of beekeeping as an example of such a biocultural unity of human knowledge and experience in which the biological and the cultural are in dynamic interaction. As a theoretical and empirical contribution, we introduce the concept of anthropobiotic community, understood as a form of joint interaction between man and another form of life – the bee colony. This concept permits rethinking the coexistence of human communities and animal groups based on mutual dependence, care and co-participation in which humans are ‘with’ and not ‘against’ their environment which is ‘between’ humans and the things in it and which can connect then – also affectively, personally, emotionally – as a space of creation of a community, as a new form of
togetherness.
Physico-chemical parameters and PCA approach to assess river water quality – a case study (Albania)
(Plovdiv University Press "Paisii Hilendarski", 2025-06-30) Hoxha, Belinda; Shyti, Bederiana; Mazrreku, Armela; Osmani, Marilda; Basha, Lule
Water quality refers to the physical, chemical and biological characteristics of water that determine its suitability for a specific use, such as drinking, industry, irrigation or supporting aquatic life. It is assessed by comparing water’s properties against established standards for various uses. Factors influencing water quality include natural elements like weather and geology, and human activities like pollution and land use. Water Quality Index (WQI) is a widely used tool for summarizing and communicating water quality information. It is a valuable and unique statistical approach that consolidates the experimental results of various physicochemical parameters into a single comprehensive and practical term in order to represent the overall quality status of water. The aim of the study is to demonstrate the ability of statistical methods in water quality prediction, specifically by identifying the most important parameters that influence the Water Quality Index (WQI). This involves the use of statistical techniques to analyze water quality data and identify the main factors that influence the overall water quality, potentially leading to a more efficient and accurate water quality management. The study takes in consideration physico-chemical parameters analyzed in Shkumbini River in Albania. The laboratory data from six sampling points during four years are gathered and analyzed based on water quality standards and statistically with PCA (Principal Component Analysis). The chosen parameters to evaluate water quality are TDS, GH, BOD, pH, DO, Cl, HCO3
- and thermotolerant coliforms, which are also used to monitor the suitability of the PCA method in the determination of WQI. The physico-chemical parameters were evaluated against international water standards. Additionally, the PCA method showed that the order of indicators determining the WQI depends on the distance between the variables and the origin. The study reveals that using the PCA method, the recommended nine parameters are sufficient to determine the WQI value, and the cumulative proportion of Component 1, Component 2 and Component 3 explains nearly 63% of the total variance.
A case of partial albinism in the western jackdaw Coloeus monedula (Linnaeus, 1758)
(Plovdiv University Press "Paisii Hilendarski", 2025-09-09) Boev, Zlatozar
On 04.11.2024, an adult Western Jackdaw was observed in the centre of the city of Razgrad. The pure white feathers are located on the upper part of the wings, the lower part of the chest, on the neck and cheeks. Three unpublished cases of complete albinos in Coloeus monedula and Garrulus glandarius from the collection of the National Museum of Natural History in Sofia are also presented.
Contribution to the knowledge of earthworm fauna (Lumbricidae) from Northern Bulgaria
(Plovdiv University Press "Paisii Hilendarski", 2025-09-05) Valchovski, Hristo; Tribis, Lev
Identifying the earthworm material recently collected from the Pre-Balkan hills resulted in the discovery of rare Allolobophora leoni (Michaelsen, 1891) and endemic species Cernosvitovia rebeli (Rosa, 1897). This is the first finding of Allolobophora leoni since 1965 and the northernmost finding of species Cernosvitovia rebeli from Bulgaria. The paper also provided information about the distribution and zoogeography of those taxa.
Earthworm (Clitellata: Lumbricidae) records from Belasitsa Mts
(Plovdiv University Press "Paisii Hilendarski", 2025-09-05) Valchovski, Hristo; Kodzhabashev, Nikolay; Teofilova, Teodoroa
The research is a contribution to the knowledge of earthworm diversity in the Belasitsa Mountains (Bulgaria). This study presents new records of three taxa: Dendrobaena misirlioglui Csuzdi & Szederjesi, 2023, D. hortensis (Michaelsen, 1890), and Cernosvitovia rebeli (Rosa, 1897), which are registered for the first time from the Belasitsa Mts. The paper also provided information about the earthworm diversity of this region.