Species alerts
- First record of Erigeron sumatrensis (Asteraceae) for FYR Macedonia
- First record of Diplachne fascicularis (Poaceae) for Bulgaria
- New marine records in the ESENIAS region (July 2016)
- Dryocosmus kuriphilus in the ESENIAS region
- Clementia papyracea established in the Mediterranean Sea and first record from Greece
Essenias News
- ESENIAS & DIAS conference 2024 and 13th ESENIAS Workshop
- 12th ESENIAS and DIAS Conference 2023 and 12th ESENIAS Workshop – Outcomes
- ESENIAS & DIAS conference 2023 and 12th ESENIAS Workshop
- ESENIAS and DIAS Conference 2022 and 11th ESENIAS Workshop – Outcomes
- ESENIAS & DIAS conference 2022 and 11th ESENIAS Workshop
Field trip June 2015 |
Scientists from the Institute of Biodiversity and Ecosystem Research (BAS) and from the Institute of Vertebrate Biology (ASCR), Czech Republic, participated in a field trip in June 2015. The field trip was organised in the framework of the ESENIAS-TOOLS project WG3: Data collection, analysis, standardisation and harmonisation on alien freshwater species; and within collaboration between the Bulgarian Academy of Sciences (BAS) and the Academy of Sciences of the Czech Republic (ASCR).
During the ten-day field trip, a total of 27 sites in three types of water bodies were sampled:
About 50 samples of benthic macroinvertebrates (mollusks and crayfish) and fish were collected.
The shoreline ichthyofauna and benthic fauna (distribution, abundance, habitat preferences) in the north-western Bulgarian stretch of the Danube River were studied in order to compare these data with data from previous studies and to assess any short-term changes in species composition.
During the sampling in the Danube tributaries and adjacent wetlands, the spiny-cheek crayfish Orconectes limosus (Rafinesque, 1817) was found for the first time in Bulgaria. Fourteen specimens were caught with a hand-net for 1.5 hours in the Topolovets River, near the town of Vidin (N 43.941306; E 22.838611), on 17.06.2015. More information can be found in the Species alerts section >>>
Four sites in standing waters were sampled to study the metazoan parasites of the non-native fish species, Lepomis gibbosus (Centrarchidae), introduced from North America over hundred years ago to Europe. The results will be compared with other populations in four river drainages in Europe: Black Sea, Aegean Sea, Mediterranean and North Sea drainages.
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