DSpace 7

DSpace is the world leading open source repository platform that enables organisations to:

  • easily ingest documents, audio, video, datasets and their corresponding Dublin Core metadata
  • open up this content to local and global audiences, thanks to the OAI-PMH interface and Google Scholar optimizations
  • issue permanent urls and trustworthy identifiers, including optional integrations with handle.net and DataCite DOI

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Recent Submissions

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Three millennia of vegetation history in the Vitosha Mountain, Bulgaria
(Plovdiv University Press "Paisii Hilendarski", 2026-03-18) Tonkov, Spassimir; Marinova, Elena; Gyurova, Dessislava
Pollen analysis supported by radiocarbon dating was performed on a core collected from a peat bog in the central plateau area of the Vitosha Mountain. The palynological data provides information on the vegetation changes over the last three millennia. Between 3000 and 800 years ago forests of Picea abies with some Pinus sp. and less Abies alba dominated on the high slopes of the mountain. Below them were distributed forests of Fagus sylvatica and mixed oak communities with Carpinus betulus, C. orientalis, while Corylus was found on open terrains. In the time interval 800-560 cal. yrs. BP (1150-1400 AD) the spruce forests declined alongside with a slight increase for beech. By that time, the first signs of human activity are justified by an increase for Poaceae, Artemisia, Chenopodiaceae, Cirsium, Plantago lanceolata, Rumex and Juniperus, which points to partial deforestation, forest fires and acquisition of new pasture land. The last centuries witnessed the fragmentation of Picea abies forests, the disappearance of Abies alba, and intensification of the human interference in the vegetation cover particularly on the southern slope
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DOI: 10.69085/pif20171032, ИЗОБРАЖЕНИЯ НА БОЗДУГАНИ В ПАМЕТНИЦИ НА ИЗОБРАЗИТЕЛНОТО ИЗКУСТВО ОТ БЪЛГАРСКОТО СРЕДНОВЕКОВИЕ
(Пловдивско университетско издателство ПУ Паисий Хилендарски, 2017) Стоян Попов
Настоящата работа разглежда изображения на боздугани върху паметници на изобразителното изкуство, свързани с българското средновековие. От днешните български земи са ми известни пет храма със запазени изображения на боздугани. Те са от периода ХV – ХVІІ в. Такива има в стенописите от църквите „Св. св. Петър и Павел“ във Велико Търново (от ХV в.), „Св. Георги Победоносец“ в едноименния манастир край с. Кремиковци, Софийско (ок. 1493 г.), църквата на Алинския манастир (ХVІІ в.) и в арбанашките „Рождество Христово“ и „Успение Богородично“ (и двете от ХVІІ в.). Голям брой изображения от мадридския ръкопис на хрониката на Йоан Скилица (датиран във втората половина на ХІІ в.) показват боздугани. Макар и предадени доста схематично те са разделени в четири групи, съобразно формата и характеристиките на бойните им глави.
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Color-based analytical assessment of microplastic contamination in surface waters from the Black Sea (Bulgaria)
(Plovdiv University Press "Paisii Hilendarski", 2026-03-14) Yancheva, Vesela; Stoyanova, Stela; Georgieva, Elenka; Valkanov, Kiril
Microplastic (MP) contamination in surface waters is a growing environmental concern; however, information on MP color and size distribution in the Black Sea remains limited. This pilot study examined surface water samples from five coastal sites along the Bulgarian Black Sea coast. The findings establish baseline data on MP color and size characteristics and underscore the need for further research into the environmental behavior and management of colored MPs.
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Contribution to the study of the free-living freshwater nematodes from Vodas River, Edessa, Greece
(Plovdiv University Press "Paisii Hilendarski", 2026-03-15) Stoichev, Stefan
Hydrobiological studies of Vodas River in Edessa, Greece were performed in 2022. The present study provides the first information on free-living freshwater nematodes from Voda River in Edessa, Greece. In our study, we identified 7 species of freshwater free-living nematodes belonging to 6 genera. This is the first detailed study on free-living freshwater nematodes from the Vodas River in Edessa, Greece. The 3 species (marked by +) and 2 genera (marked by *) are new to the hydrofauna of Greece.
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A contribution to the knowledge of the sexual size dimorphism of the narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) from Bulgaria
(Plovdiv University Press "Paisii Hilendarski", 2026-03-16) Mollov, Ivelin
This study examines the sexual size dimorphism in 20 adult Pontastacus leptodactylus from “Kardzhali” Dam Lake, Bulgaria, via 15 morphometric traits. MannWhitney U-tests reveal significant differences in 19 parameters: males exhibit larger carapaces and chelae (e.g., chela length SDI 42.5%), while females have wider abdomens and telsons, aligning with previous studies. The results contribute to the data on phenotypic plasticity and conservation needs, considering the scarce regional data. The present study could provide additional information for future studies and management plans.