Original scientific paper

https://doi.org/10.2478/cjf-2020-0007

LONG-TERM TRENDS IN THE STRUCTURE AND DYNAMICS OF THE FISH COMMUNITIES IN BUŠKO BLATO RESERVOIR

Aldijana Mušović ; Faculty of Science, University of Sarajevo, Zmaja od Bosne 33-35, 71 000 Sarajevo, Bosnia and Herzegovina
Rifat Škrijelj ; Faculty of Science, University of Sarajevo, Zmaja od Bosne 33-35, 71 000 Sarajevo, Bosnia and Herzegovina
Mahir Gajević ; Faculty of Science, University of Sarajevo, Zmaja od Bosne 33-35, 71 000 Sarajevo, Bosnia and Herzegovina
Belma Kalamujić Stroil ; University of Sarajevo-Institute for Genetic Engineering and Biotechnology, Zmaja od Bosne 8 Kampus, 71000 Sarajevo, Bosnia and Herzegovina
Adi Vesnić ; Faculty of Science, University of Sarajevo, Zmaja od Bosne 33-35, 71 000 Sarajevo, Bosnia and Herzegovina
Maja Mitrašinović-Brulić ; Faculty of Science, University of Sarajevo, Zmaja od Bosne 33-35, 71 000 Sarajevo, Bosnia and Herzegovina
Samir Đug ; Faculty of Science, University of Sarajevo, Zmaja od Bosne 33-35, 71 000 Sarajevo, Bosnia and Herzegovina

Abstract

Buško Blato Reservoir, the third largest hydro accumulation in Europe, is situated in the south-eastern part of the karstic Livanjsko Polje Valley. This aquatic ecosystem is distinguished by a very rich ichthyofauna and the presence of four endemic fish species. Numerous studies focus on ichthyological researches of Buško Blato Reservoir. Its ichthyofauna has been exposed to changes in ecological factors, which in turn reflected on the structure and composition of fish populations. The main objective of this paper was to assess the current state and predict future trends in the ichthyofauna structure and dynamics based on the field data and comprehensive analyses of literature data. The results of the research indicated the presence of 11 fish species from four families, which is the largest number of fish species ever recorded in this ecosystem. Sander lucioperca, Lepomis gibbosus, Pseudorasbora parva and Tinca tinca were recorded for the first time in this ecosystem, while some previously recorded species were not found. The results of the analyses clearly indicate the presence of natural interspecific competition and significant level of threats to the endemic fish species caused by human activities.

Keywords

endemic species; ichthyofauna; interspecific competition; invasive species

Hrčak ID:

238491

URI

https://hrcak.srce.hr/238491

Publication date:

1.6.2020.

Article data in other languages: croatian

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