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

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Recent Submissions

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Addendum to the species list of longhorn beetles (Coleoptera: Cerambycidae) of Sakar Mountains, Bulgaria

(Plovdiv University Press "Paisii Hilendarski", 2026-11-11) Gradinarov, Denis; Petrova, Yana

Four species from the family Cerambycidae – Cortodera humeralis humeralis (Schaller, 1783), Leioderes kollari kollari L. Redtenbacher, 1848, Calchaenesthes oblongomaculata (Guérin-Méneville, 1844) and Mesosa nebulosa nebulosa (Fabricius, 1781), are reported as new for Sakar Mountains. Besides these, Brachyta balcanica Hampe, 1871 is recorded from the mountain with exact locality data, 75 years after its only historical record. The total number of longhorn beetle species currently known from the mountain is 74. The species L. kollari kollari and C. oblongomaculata are rarely recorded in Bulgaria.

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Challenges to ecological security in the context of global climatic changes

(Plovdiv University Press "Paisii Hilendarski", 2026-09-30) Yazov, Kostadin

Climate change and environmental protection are among the most complex challenges facing humanity and pose several security risks. Many strategic documents have long classified climate change as a threat to the security of countries worldwide. Environmental instability does not always create new conflicts directly, but acts as a catalyst that intensifies already existing social, economic, and political tensions. Climate change poses new security challenges, mainly related to migration, conflicts, health risks, and the deficiency of natural resources. All of these are seen as key catalysts for instability. More generally, climate change is a problem that should easily unite all countries in implementing common measures. But in reality, this is not the case. Global efforts to find a common solution face one major problem, and that is the high price that must be paid to deal with the problem. Climate change is more often connected to the problem of global environmental security, with expected negative impacts on human health, food security, economic activities, water and other natural resources, and infrastructure. The present research paper explores the thesis that global climate change, driven primarily by anthropogenic factors, is among the key challenges to environmental security.

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A short note on records of Psocodea (Insecta) at Manastirski Heights, SE Bulgaria

(Plovdiv University Press "Paisii Hilendarski", 2026-11-10) Georgiev, Dilian

This short note reports on seven species of psocids (Insecta: Psocodea) from Manastirski Heights, SE Bulgaria. These were the first records of species from this insect group in this area.

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New record of Divales bipustulatus (Fabricius, 1781) (Coleoptera: Melyridae) in Bulgaria

(Plovdiv University Press "Paisii Hilendarski", 2026-10-27) Gradinarov, Denis; Petrova, Yana

New data on the distribution of Divales bipustulatus (Fabricius, 1781) (Coleoptera: Melyridae) in Bulgaria are presented. Several specimens were found on the inflorescences of Centaurea sp. in Eastern Rhodopes Mountains. All three known localities of the species are situated in low-mountain areas in the southern part of the country.

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On the gastropods of Manastirski Heights, SE Bulgaria (Mollusca: Gastropoda)

(Plovdiv University Press "Paisii Hilendarski", 2026-10-27) Georgiev, Dilian

This short note reports on 13 species of non-marine snails registered at the Manastirski Heights, SE Bulgaria. From them 12 were terrestrial and one – freshwater. All records were new to this geographical area.