scholarly journals The co-existence of recreational and artisanal fisheries in the central parts of the Danube and Sava rivers

2017 ◽  
Vol 75 (4) ◽  
pp. 89-94
Author(s):  
Tomislav Treer ◽  
István Kubatov
Keyword(s):  
Bosnia And Herzegovina ◽  
Danube River ◽  
Artisanal Fisheries ◽  
Recreational Fisheries ◽  
The Danube River ◽  
Sava River ◽  
Official Data ◽  
The Sava River

Abstract The official data on recreational and artisanal fisheries in Croatia and Hungary were analysed. The data from Croatia relates to the entire Croatian section of the Danube River and to the section of the Sava River along the border with Bosnia and Herzegovina. The data from Hungary covers 60 km of the Danube River north of the Croatian border. Absolute catches in kilograms, as well as CPUE (kg per fisherman per year) by both groups in all three river sections varied from year to year without dramatic changes. Fishing with nets, artisanal fishermen differ from the anglers in two major ways: they are less selective and they catch bigger specimens. According to the official data, the existing ratio between recreational and artisanal fishermen in these three river sections does not negatively affect each other’s or overall fishing. Therefore, a conclusion can be drawn that medium-intensive artisanal fisheries qualify to co-exist with recreational fisheries.

scholarly journals Contribution to the knowledge on the distribution of freshwater sponges – the Danube and Sava rivers case study

2017 ◽  
Vol 77 (2) ◽  
Author(s):  
Stefan Andjus ◽  
Nadja Nikolic ◽  
Valerija Dobricic ◽  
Ana Marjanovic ◽  
Zoran Gacic ◽  
...  
Keyword(s):  
Danube River ◽  
Sequencing Analysis ◽  
Freshwater Sponges ◽  
The Danube River ◽  
Rdna Sequencing ◽  
Freshwater Invertebrate ◽  
Sava River ◽  
Ephydatia Fluviatilis ◽  
The Sava River

Sponges in the large rivers within the Danube River Basin (DRB) have not been adequately studied. Hence, the aim of this work was to undertake an investigation on the distribution of sponge species in the Danube and Sava rivers. Out of 88 localities covered by the study, sponges were found at 25 sites only (46 samples in total). By using morphological (light and scanning electron microscopy) and genetic (28S rDNA sequencing) analysis, four species were determined: Ephydatia fluviatilis (Linnaeus, 1759), Spongilla lacustris (Linnaeus, 1759), Eunapius fragilis (Leidy, 1851), Trochospongilla horrida Weltner, 1893. In the Danube, the predominant species was found to be E. fluviatilis making approximately 80% of collected samples, while in the Sava River S. lacustris dominated, representing 46% of the river sponges. Our work represents one of the few studies on freshwater sponges within the DRB from long stretches of the large lowland rivers (more than 2500 km of the Danube River and about 900 km of the Sava River). Moreover, molecular analysis for the identification of freshwater sponges was applied on the material collected from a wide area, thus contributing to the systematic studies on the distribution and abundance of the European freshwater invertebrate fauna in general.

Distribution of H and O stable isotopes in the surface waters of the Sava River, the major tributary of the Danube River

2018 ◽  
Vol 565 ◽  
pp. 365-373 ◽  
Author(s):  
Nives Ogrinc ◽  
David Kocman ◽  
Nada Miljević ◽  
Polona Vreča ◽  
Janja Vrzel ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Surface Waters ◽  
Danube River ◽  
The Danube River ◽  
Sava River ◽  
Major Tributary ◽  
The Sava River

Investigation of correlations between magnetic susceptibility and elemental content in the Kupa River sediments (Croatia)

2020 ◽  
Author(s):  
Stanislav Frančišković-Bilinski ◽  
Sanja Sakan ◽  
Dragana Đorđević ◽  
Aleksandar Popović ◽  
Sandra Škrivanj ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Negative Correlation ◽  
River Sediments ◽  
Danube River ◽  
Residual Fraction ◽  
Elemental Content ◽  
Icp Oes ◽  
The Danube River ◽  
Sava River ◽  
The Sava River

<p>The Kupa River basin occupies the west-central part of Croatia and is shared by two neighboring countries (Slovenia, Bosnia and Herzegovina). It is the tributary of the Sava River and meets the latter at Sisak after traversing a distance of 294 km. The Sava River belongs to the Danube River watershed and enters the Danube River at Belgrade (Serbia).      </p><p>An extreme barium anomaly in sediments of Kupica and Kupa rivers was discovered during 2003 (Frančišković-Bilinski, 2006). It is result of un-careful mine waste disposal. Therefore this river has a big potential to be used as a “natural laboratory” in the future to study sediment transport processes in rivers, so we repeated sampling on most important locations in 2018, to see which processes happened during that time frame. In the current study, we aim to investigate correlations between magnetic susceptibility (MS) and elemental content of 26 studied elements in the fine sediment fraction (<63 µm) of samples from 2018. MS method is a fast and cheap method, which can give indication of contamination with some metals, so we aimed to test its suitability on Kupa River sediments. Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) was used to determine the concentration of the studied elements, after sequential extraction procedure (Sakan et al., 2016). Total concentrations of each element were determined as the sum of concentrations determined in each fraction. The same method was applied recently for determination of Ba concentrations in Kupa River sediments by Frančišković-Bilinski et al. (2019).</p><p>Correlation analysis was performed to reveal statistical correlations between MS and 26 elements analyzed by ICP-OES. Ten of them showed negative correlation (As, B, Ba, Fe, K, Li, Mg, Na, P, S), while other elements showed positive. Chromium showed excellent correlation with MS (0.91) and is element with the highest correlation to MS. All other elements show much weaker correlation with MS. Element with strongest correlation to MS after Cr is vanadium (0.62), followed by Mn (0.52), Al (0.52) and Cd (0.50). All other elements have rather weak correlation with MS, among which highest are those of Sr (0.45), Zn (0.35), Be (0.28), Co (0.27), Pb (0.27) and Ti (0.26). Rest of elements has very low correlation.</p><p>Our research confirmed that MS is not suitable to study barium contamination in sediments, as they have low negative correlation (-0.18). Low negative correlation of MS with Fe (-0.12) indicates that MS is not caused by iron minerals in Kupa River sediments. MS values show extreme value at the same location as does Cr, which is bound to residual fraction of yet not known mineral composition.</p><p>Earlier data of Frančišković-Bilinski (2007) show that SiO<sub>2 </sub>group of minerals predominate in Kupa sediment at Pokupsko, where MS and Cr have highest values.</p><p>Rererences:</p><p>Frančišković-Bilinski, S. (2006). J.Geochem.Explor. 88, 1-3, 106-109.</p><p>Frančišković-Bilinski, S. (2007). Fresenius Env.Bull. 16, 5, 561-575.</p><p>Frančišković-Bilinski S., Bilinski, H., Sakan, S., Đorđević, D., Popović, A. (2019). SGEM Conference proceedings, 19, 3.1., 73-80.</p><p>Sakan, S., Popović, A., Anđelković, I., Ðorđević, D. (2016). Env.Geochem.Health 38, 855–867.</p>

scholarly journals GEOTECHNICAL CONDITIONS FOR CREATION OF THE VERTICAL SHAFT FOR RECONSTRUCTION OF OIL PIPELINE FROM TERMINAL BROD TO CROATIAN BORDER ON SAVA RIVER

2016 ◽  
Vol 1 (13) ◽  
Author(s):  
Nedjo Djurić ◽  
Petar Mitrović
Keyword(s):  
Reinforced Concrete ◽  
Bosnia And Herzegovina ◽  
Geological Structure ◽  
Vertical Shaft ◽  
Border Line ◽  
Oil Pipeline ◽  
Supporting Structure ◽  
Sava River ◽  
The Sava River

Reconstruction of share in an existing corridor of Terminal Brod to the Croatian border on the SavaRiver is part of the corridor, which continues to go across the river to Slavonski Brod. The existingcorridor will be replaced on a part of Sava River, where is planned a production of a tunnel with twovertical shafts on the banks of the river. Research in the field of the shafts and tunnels are divided intwo parts considering the border line between the countries Bosnia and Herzegovina and Croatia. Onthe right bank of the Sava River researches were conducted in the development of the vertical shaft.The complexity of the geological structure and the proximity of of the Sava River require thedevelopment of the vertical shaft from the supporting structure of reinforced concrete (RC) midriffs.Also, the flow of water into the shaft is largely expected from its bottom, which requires manufacturing

scholarly journals International legal regulation of protection and sustainable use of water courses

2006 ◽  
Vol 58 (1-2) ◽  
pp. 157-183
Author(s):  
Vid Vukasovic
Keyword(s):  
River Basin ◽  
Sustainable Use ◽  
Legal Regulation ◽  
Danube River ◽  
Framework Agreement ◽  
Serbia And Montenegro ◽  
Sava River ◽  
Basic Frame ◽  
Water Courses ◽  
The Sava River

The article deals with international legal regulation of protection and sustainable use of watercourses with special reference to the Sava River Basin. This regulation is considerably developed on universal, regional and sub regional international levels by a substantial number of declaratory treaty and other acts dealing with the subject. In case of the river Sava the basic frame for regulation is on the European level: the documents concerning the Danube River as a whole, and particularly the Framework Agreement on the Sava River Basin. The author stresses that adoption and ratification of this document is probably one of the biggest step forward in co-operation between Slovenia, Croatia, B&H, and Serbia and Montenegro.

scholarly journals A FIRST RECORD OF EPHORON VIRGO (OLIVIER, 1791) (EPHEMEROPTERA: POLYMITARCYIDAE) FROM THE SAVA RIVER, WITH NOTES ON ITS ECOLOGICAL PREFERENCES AND RARITY OF FINDINGS IN THE REGION

2015 ◽  
Vol 13 ◽  
pp. 80-85
Author(s):  
Vanja Marković ◽  
Margareta Kračun-Kolarević ◽  
Stoimir Kolarević ◽  
Bojana Tubić ◽  
Marija Ilić ◽  
...  
Keyword(s):  
First Record ◽  
Danube River ◽  
Large Rivers ◽  
Anthropogenic Influences ◽  
Comprehensive Investigation ◽  
First Finding ◽  
Iron Gate ◽  
Grab Sample ◽  
Sava River ◽  
The Sava River

Ephoron virgo (Olivier, 1791) is an European burrowing filter-feeding mayfly species. Once common in large rivers, in XX century it became rare due to increased negative anthropogenic influences. In Serbia there was only one recent report of its presence, from the Danube River (Iron Gate area). The aim of this paper is to report on the first finding of E. virgo from the Sava River, and to discuss its scarce findings in the region. Three larval specimens were found in the Belgrade region in grab sample taken in 2014. In order to assess the development of the population in the region, a comprehensive investigation should be conducted.

scholarly journals The Average Weight of Fish Caught by Anglers at the Croatian Section of the Sava River Catchment

2021 ◽  
Vol 79 (2) ◽  
pp. 71-74
Author(s):  
Tomislav Treer
Keyword(s):  
Bosnia And Herzegovina ◽  
Fishery Management ◽  
Average Weight ◽  
Sander Lucioperca ◽  
River Catchment ◽  
Silurus Glanis ◽  
Individual Weight ◽  
Sava River ◽  
Average Individual ◽  
The Sava River

Abstract The aim of this research is to compare the average individual weight of the four most important fish species in fisheries (Cyprinus carpio, Silurus glanis, Esox lucius and Sander lucioperca), caught by angling in different parts of the Sava River catchment in Croatia. Significant differences were expressed between the counties along the Sava River catchment, with the smallest specimens (p˂0.05) caught in Vukovar-Sirmium county. Artisanal fishery is mostly developed in that part of the Sava River, along with angling in both countries – Croatia and Bosnia and Herzegovina. Furthermore, the inflow of the River Bosna passes through urban and industrial cities of Bosnia and Herzegovina. It can be concluded that implementing recreational fishing surveys with the specific aim of obtaining data on average individual weight is useful for fishery management.

scholarly journals COENOLOGICAL SIMILARITIES OF DIATOMS IN WELLS AND IN OTHER WATER BIOTOPES IN BOSNIA AND HERZEGOVINA

2018 ◽  
Vol 1 (18) ◽  
Author(s):  
Milenko Ćurčić ◽  
Dragica Milinković ◽  
Olivera Petrović-Tomanić ◽  
Dijana Đurić
Keyword(s):  
Comparative Analysis ◽  
Bosnia And Herzegovina ◽  
Qualitative Data ◽  
Anthropogenic Activity ◽  
Seasonal Fluctuations ◽  
Sava River ◽  
Infraspecific Taxa ◽  
Artesian Wells ◽  
The Sava River

The research and determination of diatoms (Bacillariophyta) have been carried out in the area ofSemberija (Bosnia and Herzegovina) in several locations, which included 35 open shadoof wellsincurred by the anthropogenic activity many decades ago, and they represent artificial fresh waterecosystems. The algological material has been collected from wells in 9 villages, the Sava River, at thesite Bosanska Rača, the Drenovača pond in Velino Selo, artesian wells in Velino Selo and DonjiBrodac, and ephemeral puddles in the immediate proximity of the researched wells. In all investigatedhabitats of those locations 149 species and infraspecific taxa of Bacillariophyta in total have beenidentified, of which 89 (59.73%) were identified only in the investigated wells in Semberija.On the basis of comparative analysis results, it can be concluded that 45 (30.20%) of species andinfraspecific taxa of Bacillariophyta are common for the wells and other investigated localities (SavaRiver, Drenovača pond, artesian wells, ephemeral puddles). 61 species and infraspecific taxa ofBacillariophyta (40.93%) were identified in Sava River, 57 species and infraspecific taxa (38.25%) inDrenovača pond, 21 species in front of the artesian wells and 16 species and infraspecific taxa in theephemeral puddles. The density of population, i.e. the production of Bacillariophyta in the investigatedwells, shows similar seasonal fluctuations. The highest average number of plants per unit of area on themoss leaves at a depth of 50 cm of well walls amounted to 453702 items/cm2, and the lowest averagenumber of plants was recorded at the depth of 200 cm of well walls and amounted to 68.207 items/cm2.In order to have the objective results of the researched and identified diatoms in the mentioned biotopes,the numerical analysis of qualitative data on the structure of diatoms in similar biotopes, i.e. on theircoenological similarities, have been carried out.

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