Bat occurrences from Bulgaria

Enregistrements de données

Les données de cette ressource occurrence ont été publiées sous forme dune Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant quensemble dun ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 10 203 enregistrements.

Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.

Versions

Le tableau ci-dessous naffiche que les versions publiées de la ressource accessibles publiquement.

Comment citer

Les chercheurs doivent citer cette ressource comme suit:

Toshkova N, Brosens D, Stoeva E, Deleva S, Zhelyazkova V, Acosta-Pankov I, Goranov S, Dundarova H, Lakovski K, Genova O, Stoicheva S, Krushkova V, Ivanov A, Mechev A, Hubancheva A, Pavlova A, Metcheva R, Popov V, Beltcheva M, Pandurski I, Kisimov T, Kolev M, Kirov K, Karaganchev A, Karadakov V, Trendafilova S, Pavlova B, Yankov L, Stoyanov S, Yankov Y, Atanasov T, Georgieva T, Borisov I, Dilovski G, Dicheva A, Titorenkova S, Aleksandrova I, Delchev S, Sirakov K, Bradley I, Pazderkov D, Atanasov V, Zhelev P, Dechev A, Dimitrova K, Koseva K, Petrov B (2025). Bat occurrences from Bulgaria. Version 1.5. National Museum of Natural History, Bulgarian Academy of Sciences. Occurrence dataset. https://cloud.gbif.org/eca/resource?r=bat-occurrences-bulgaria&v=1.5

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est National Museum of Natural History, Bulgarian Academy of Sciences. En vertu de la loi, léditeur a abandonné ses droits par rapport à ces données et les a dédié au Domaine Public (CC0 1.0). Les utilisateurs peuvent copier, modifier, distribuer et utiliser ces travaux, incluant des utilisations commerciales, sans aucune restriction.

Enregistrement GBIF

Cette ressource a été enregistrée sur le portail GBIF, et possède lUUID GBIF suivante : 6b2a3042-db4f-4bf2-85a4-0301654a083a.  National Museum of Natural History, Bulgarian Academy of Sciences publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec lapprobation du GBIF Bulgaria.

Mots-clé

Occurrence; bat; Chiroptera; Bulgaria; Observation

Contacts

Couverture géographique

Bulgaria

Couverture taxonomique

This dataset covers organisms belonging to the order Chiroptera (bats). It includes occurrence records of various bat species found in Bulgaria. In Bulgaria, bats are represented by four families: Vespertilionidae, Rhinolophidae, Miniopteridae, and Molossidae. The family Vespertilionidae is the most diverse and includes 26 species from several genera, such as Myotis, Barbastella, Eptesicus, Hypsugo, Nyctalus, Pipistrellus, Plecotus, and Vespertilio; the family Rhinolophidae, represented by 5 species; Miniopteridae represented by a single species; and Molossidae represented by one species.

Couverture temporelle

Données sur le projet

The region of the Balkans is identified as a European biodiversity hot spot. The Balkans include part of Croatia, the whole of Bosnia and Herzegovina, Albania, Kosovo, Montenegro, North Macedonia, Greece, Bulgaria and the European part of Turkey. The Balkans is part of the Mediterranean Key Biodiversity Area (KBA). However, the biodiversity in the Balkans is threatened. More and more Balkan countries open their economies and become more accessible and attractive for large international investors and tourists. This causes major landscape changes. Agriculture is intensifying, infrastructure is being modernised and expanding at an accelerated pace, hydroelectric power stations in rivers are build, etc. Reliable data on species occurrence is needed for evidence-based conservation and management and further research on the biodiversity in the Balkans. Unfortunately, only a small amount of the geographically referenced species occurrence data from the Balkans is available. Baseline data on many groups like mammals, insects, plants, reptiles and amphibians are absent. With this project, we aim to mobilise data from the Balkans. Species specialists from five Balkan countries will be trained in data mobilisation. By promoting, communicating, and training researchers, the project will demonstrate the importance of FAIR data availability, aiming at mainstreaming biodiversity data publication in the region. The target is publishing more than 100.000 records, which will increase the number of published data on mammals, birds, insects, fish, reptiles and amphibians by at least 10%. The results of this project will also be published in Biodiversity Data Journal (Pensoft Publishers).

Les personnes impliquées dans le projet:

Méthodes déchantillonnage

The dataset was compiled using a variety of sampling methods. The primary method involved direct observation of bats at underground and above-ground roosts, including abandoned buildings, bat boxes, and natural structures. In addition, bats were captured using mist nets and harp traps, particularly during field surveys at roost entrances, active foraging areas, and flying corridors. Acoustic monitoring was also employed, using both passive (stationary detectors) and active (manual recording) techniques to detect species presence in areas where physical capture was not feasible or appropriate. All bat calls were manually identified by experts to ensure reliable species-level identification. Additional data were collected from two bat rehabilitation centres, as well as from deceased individuals and bat skulls identified through museum and field collections. All data were collected, georeferenced, and organized by the authors. Subsequent data cleaning and post-processing were conducted to ensure taxonomic accuracy, remove duplicate records, and standardise geographic information in accordance with GBIF data publishing standards.

Description des étapes de la méthode:

1. 1. Data collection: оccurrence data were gathered from multiple sources, including field surveys, acoustic monitoring, roost inspections, bat rehabilitation centers, deceased specimens, and literature reviews. All observations were recorded with associated metadata where available (e.g., date, locality, habitat type, method). 2. Species identification and validation: species identifications were performed or verified by qualified bat researchers. Acoustic recordings were reviewed and manually identified using reference call libraries. 3. Data digitisation: historical and literature-based records were digitised manually. Field data were entered into structured digital formats using spreadsheets and databases. 4. Georeferencing: all locality information was georeferenced using GPS data or estimated based on place names and mapped features. Coordinates were assigned in decimal degrees and validated using GIS tools. 5. Data cleaning and standardization: data were reviewed for errors, including invalid species names, date inconsistencies, and coordinate anomalies. Taxonomic names were standardized according to accepted references. Duplicate records were removed. 6. Formatting for GBIF: the cleaned dataset was structured according to the Darwin Core standard, ensuring compliance with GBIF formatting requirements. 7. Final review and publishing: the dataset underwent a final validation and quality control check before being published to the GBIF.

Citations bibliographiques

1. Benda, P., Ivanova, T., Horáček, I., Hanák, V., Červený, J., Gaisler, J., Georgieva, A., Petrov, B., & Vohralík, V. (2003). Bats (Mammalia: Chiroptera) of the eastern Mediterranean. Part 3. Review of bat distribution in Bulgaria. Acta Societatis Zoologicae Bohemicae, 67(4), 245-357.
2. Deleva, S., Kolev, N., Ivanov, A., Marinova, P., Petkov, N., & Natchev, N. (2025). Biodiversity Surveys Before Residential Building Renovations in Bulgaria with Emphasis on the Impact and Conservation of Building-Dwelling Fauna. Ecologies, 6(1), 22. https://doi.org/10.3390/ecologies6010022
3. Dundarova, H., & Popov, V. V. (2024). Bats at an Altitude above 2000 m on Pirin Mountain, Bulgaria. Animals, 14(1), 126. https://doi.org/10.3390/ani14010126
4. Popov, V. V. (2018). Bats in Bulgaria: Patterns of species distribution, richness, rarity, and vulnerability derived from distribution models. In Bats. IntechOpen. DOI: 10.5772/intechopen.73623

Métadonnées additionnelles