Boyan Michev

Bulgarian Academy of Sciences | BAS

Migration activity of bats of Pipistrellus nathusii across the European seas have been reported mainly for the North and Baltic Sea basins. Recently, we have recorded the species for first time within the Bulgarian Black Sea exclusive economic zone (100 km off the country's coast). In addition, six species, i.e. Myotis daubentonii, Nyctalus leisler...

The results of the first comprehensive radar survey of the spring and autumn bird migration in Bulgaria in a key area of the migratory flyway Via Pontica are presented. The weather radar of Bulgarian Air Traffic Services Authority (BULATSA) located nearby the town of Aksakovo (Varna Region, NorthEastern Bulgaria) was used. The survey covered 1101 d...

Verification of Radar data by simultaneous visual observations of the same birds. The first effective verification of weather radar system applied for bird migration study in Bulgaria.

The book is written to summarize the results of the WEMA project „Mapping and Assessment of Ecosystem Services of Wetlands in Bulgaria“. The project was implemented by the Institute of Biodiversity and Ecosystem Research at the Bulgarian Academy of Sciences (IBER‐BAS) and was accomplished with the financial support of the BG03 Program „Biodiversity...

Книгата е написана с цел да се обобщят резултатите от проект „Картиране и оценка на екосистемните услуги във влажните зони на България“ (WEMA). Проектът беше изпълнен от Института по биоразнообразие и екосистемни изследвания при БАН (ИБЕИ- БАН) и е осъществен с финансовата подкрепа на Програма BG03 „Биологично разнообразие и екосистеми“, по Финансо...

The paper presents data of the autumn migration along the Western Black Sea migration route (Via Pon-tica) collected since 1979 with special attention to the changes of migration numbers and peak days of the ten most numerous soaring bird species. We found long-term increase in the migration numbers of Pelecanus onocrotalus, Ciconia ciconia, Ciconi...

The paper presents data on the total biodiversity, the newly described and threatened, rare and invasive species of the complex wetland Atanasovsko ezero, which is situated in the vicinity of the town Burgas on the southern Black Sea coast of Bulgaria. Different parts of Atanasovsko Ezero were declared as Managed Reserve, Ramsar Site, Protected Zon...

The book is written to summarize the results of the WEMA project „Mapping and Assessment of Ecosystem Services of Wetlands in Bulgaria“. The project was implemented by the Institute of Biodiversity and Ecosystem Research at the Bulgarian Academy of Sciences (IBER‐BAS) and was accomplished with the financial support of the BG03 Program „Biodiversity...

Between August 27th and September 30th 2014 the intensity of nocturnal bird migration was measured in the Dobrudzha Region (NE Bulgaria) using a specific bird radar. During the same time period and in the same area (part of Natura 2000 net BGSPA0002051 Kaliakra and adjacent areas), road-kills as well as collisions of birds with wind turbines were r...

The digital edition is part of a joint project for a print and digital edition of the Red Data Book of the Republic of Bulgaria. It includes the full information from the print edition (vol 1 Plants and Fungi, vol 2 Animals, vol 3 Natural habitats), enriched with videos, extended photo gallery, higher-resolution drawings, distribution maps with rel...

Data were collected during three voyages of Research Vessel Akademik in summer of 2009 and in spring and autumn of 2011. The area of ornithological observations included the shoreline of the Black Sea coast, the territorial waters and the Exclusive Economic Zone of Bulgaria. During the voyages, general observations at certain places (totally 21 day...

The paper contains data on total migration numbers of 35 species of raptors and 5 species of soaring water birds on 35 sites in different parts of the country during 7297 days for the period 2004-2011. The visual observations were carried out using methods approved by Ministry of Environment and Waters. To make the presentation and analysis of the...