Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. IX
Written by Ira-Adeline SIMIONOV, Stefan-Mihai PETREA, Alina MOGODAN, Aurelia NICA, Dragos CRISTEA, Mihaela NECULITA
Climate variability and change has negative impact on fisheries ecosystems. Climate change can manifest a pervasive effect on freshwater ecosystems, by altering biodiversity patterns, abundance and distribution of species, biological interactions, phenology and organisms’ physiology, performance and fitness. Central and Southern Europe, including Romania, is considered to be one of the most vulnerable regions affected by changes in the climate system. Therefore, the aim of the study was to evaluate the influence of Danube River water level and temperature regime, atmospheric thermic regime, from the last 3 years (2017-2019), on ichthyofauna diversity and abundance in the Lower Sector of the River. The year 2018 registered the highest values for water levels and the year 2019 recorded the maximum values for air temperatures, in all hydrometric stations. A general conclusion of this research is that the capture level of peaceful (non-ichthyophagous) fish species are higher compared to raptor (ichthyophagous) fish species. Based on these results, there is strong recommendation to incorporate climate variability and change in the modelling of fisheries management approaches to reduce the impacts of climate variability and change on fisheries-based livelihoods.
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