This review article summarises some of the contributions presented at the 40th Anniversary Conference of the International Association for Danube Research (IAD) held in Sofia, 17-20 June 2014. The current volume of Acta zoologica bulgarica, Supplement 7, comprises 31 contributions covering seven of the nine conference topics, one project review and three papers devoted to the memory of the resp...

The increasing importance of entrepreneurship for flourishing economic progression, innovation and job creation have raised the concerns of decision makers and researchers for the investigation of the dynamics that could have an influence on the entrepreneurial activity levels. Indeed, transformations in entrepreneurship and entrepreneurial activity levels are considerable, persistent and disti...

Acipenseriformes are composed of 25 sturgeon species and two paddlefish species distributed exclusively in the northern hemisphere. The Danube River and the Black Sea were originally inhabited by six sturgeon species but two are extinct and only four are still reproducing currently in the Lower Danube: Huso huso, Acipenser stellatus, A. gueldenstaedtii and A. ruthenus. Sturgeon species hybridiz...

In a clinical setting it seems to be normal these days that a relevant proportion or even the majority of different bacterial species has already one or more acquired antibiotic resistances. Unfortunately, the overuse of antibiotics for livestock breeding and medicine has also altered the wild-type resistance profiles of many bacterial species in different environmental settings. As a matter of...

Statistical analysis of daily water level data from four gauging stations along the Hungarian Danube reach has been carried out with the purpose of analysing the impact of the Austrian hydropower plants on the floods of the river. Conditional probability distribution functions of annual flood load maxima and annual number of floods were generated for the periods 1957-1976 and 1977-1996. By comp...

The paper gives a general description of the Danube waterway data management in Croatia. For this purpose, we initiated the development of a specialized geographic information system (GIS), the so called River IS, which provides efficient waterway related data management for the Croatian part of the Danube River. In addition, Croatian activities in the Pan-European Programme Consortium Operatio...