Dilian Georgiev

Plovdiv University

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Peter Glöer

Institute for Biodiversity

Slaveya Stoycheva

Ivaylo Dedov

Institute of Biodiversity and Ecosystem Research

Ulrich E. Schneppat

Bündner Kunstmuseum

Evgeniy Raichev

Trakia University

Ivelin A. Mollov

Plovdiv University

Stanimira Deleva

Bulgarian Academy of Sciences

Stanislava Peeva

Trakia University

AМ

A. М. Ostrovsky

Gomel State Medical University

D. Kostov

Trakia University

Cooperative Institutions

Bulgarian Academy of Sciences

Institute of Biodiversity and Ecosystem Research

Plovdiv University

National Museum of Natural History

Universidade de Vigo

Trakia University

Universidade do Porto

Sofia University "St. Kliment Ohridski"

Jagiellonian University

Russian Academy of Sciences

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Diet of the Stone marten (Martes foina Erxl.) in two large cities of the Upper Thracian Lowland, South Bulgaria

DOAJ (DOAJ: Directory of Open Access Journals) (2013)

Dilian Georgiev

The fruits of domestic and wild plants comprise the main food of the urban Stone martens. The secondary food varied during seasons. Insects, birds and mammals (small and bone remains of large mammals) occurred in the feces. Amphibians and reptiles were eaten occasionally.

Marten

Food habits

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Bythinella fabiae n. sp., a new spring-snail species (Gastropoda: Rissooidea) from the Belasitsa Mountains, South-West Bulgaria

Historia naturalis bulgarica (2022)

Dilian Georgiev Ulrich E. Schneppat Ivaylo Dedov

A new species of the genus Bythinella is described. Its type locality is: South-West Bulgaria, Belasitsa Mountains, Leshnishki Waterfall, northern slope of Kongur Peak. Because of its locality position it was compared and with Greek and Macedonian species.

Macedonian

Type locality

West coast

10.48027/hnb.44.041

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EUROPEAN BADGER (MELES MELES LINNAEUS, 1758) PREFERENCES TO THE TERRAIN EXPOSURE FOR DIGGING DENS IN SOUTHEASTERN BULGARIA

Trakia Journal of Sciences (2021)

Stanislava Peeva Dilian Georgiev K. Kirilov

A total of 47 active badger burrows in the Southeastern Bulgaria were described in order to find whether there are preferences to terrain exposure for its digging activity. The most of the dens were found on terrain with south exposure - 23.4%, followed by these on the east and west side -19.15% each. The dens faced to these three directions, together with these to intercardinal directions connected with south, represented 80.85% of the active badger dens found. A tendency in the preference of the European badger to the southern exposure of the terrain for its digging activity in the region of South-eastern Bulgaria was established.

Meles

Digging

Norwegian

10.15547/tjs.2021.02.004

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A new stygobiotic snail species from North Bulgaria

DOAJ (DOAJ: Directory of Open Access Journals) (2015)

Dilian Georgiev Peter Glöer

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Two new species of the Bythiospeum Bourguignat, 1882 complex (Gastropoda: Hydrobiidae) and a new locality of Balkanospeum schniebsae (Georgiev, 2011) from north Bulgaria

Zenodo (CERN European Organization for Nuclear Research) (2013)

Dilian Georgiev Peter Glöer

10.5281/zenodo.8277263

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Contribution to the Knowledge on the Gastropod Fauna of the Natural Park “Balgarka” (Stara Planina Mts., Bulgaria)

DOAJ (DOAJ: Directory of Open Access Journals) (2013)

Dilian Georgiev

Natural park

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First record of Grossuana angeltsekovi Glöer & Georgiev, 2009 (Gastropoda: Risooidea) from Greece

Dilian Georgiev

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The Molluscs of the Medieval Settlement at the Village of Zlatna Livada (Bulgaria) with Notes on the Landscape Dominated the Area

Dilian Georgiev D. Kostov Dimitar Y. Dimitrov Rumyana Koleva

In the current study we report a total of 99 specimens of terrestrial snails from which the species Zebrina detrita dominated with 76 specimens. All other species were represented by 4-8 specimens each. As a whole the xerophilic species were most abundant - 84 specimens (Z. detrita and Helix figulina). The rest of the specimens were representatives of mesophilic species. The registered freshwater mussels were from the genera Unio and Anodonta, and the marine ones were Ostrea edulis, Mytilus galloprovincialis, and Lima hians.

Freshwater mollusc

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DIET COMPOSITION OF THE EURASIAN OTTER AND CO-EXISTING GREY HERON IN A FISH FARM DURING THE SPRING-SUMMER SEASON IN BULGARIA

Dilian Georgiev

Our study was aimed on estimation of the species diversity and number of prey of two piscivorous predators in a fish ponds area, and to calculate the trophic niche breadth and their overlap in the same habitat. We studied the area of fish farms near Nikolaevo Town, Kazanlashka Valley (Southern Bulgaria). Otter spraints (n = 48) were gathered from various substrates on banks of the ponds. Grey heron pellets and food remains (bones, scales, hair and feathers) (n > 100 items) were collected from beneath their nesting colony on trees near the farm. The taxonomical diversity of the Gray heron's diet was about two times higher compared with that of the otter. When considering the percent of minimal individual numbers in both diets (Fех), we found that fish was the predominant prey. The main food source species for both predators was the crucian carp. The trophic niche of the Grey heron was broader (BA = 0.3) than the otter's (BA = 0.1). A relatively high overlap level of the niches was estimated (Оpiqi = 0.6). The fact that the dominant food of both predators studied was a non-indigenous fish species to Europe, considered as a pest in the fish farms, determined the otter and the Grey heron more likely as salutary animals in the area and the seasons under this study.

Ardea

Crucian carp

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Campodeinae (Campodeidae, Diplura) records from Sarnena Gora Mts, Bulgaria

DOAJ (DOAJ: Directory of Open Access Journals) (2021)

Alberto Sendra Dilian Georgiev

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