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

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.

2010 ◽  
Vol 75 (1) ◽  
pp. 113-128 ◽  
Author(s):  
Simona Murko ◽  
Radmila Milacic ◽  
Marjan Veber ◽  
Janez Scancar

The applicability of nitric acid, palladium nitrate and a mixture of palladium and magnesium nitrate as matrix modifiers was estimated for the accurate and reproducible determination of cadmium (Cd), lead (Pb) and arsenic (As) in sediments of the Sava River by electrothermal atomic absorption spectrometry, ETAAS. Decomposition of the samples was done in a closed vessel microwave-assisted digestion system using nitric, hydrochloric and hydrofluoric acids, followed by the addition of boric acid to convert the fluorides into soluble complexes. The parameters for the determination of Cd, Pb and As in sediments were optimized for each individual element and for each matrix modifier. In addition, two sediment reference materials were also analyzed. In determination of Cd and Pb, nitric acid was found to be the most appropriate matrix modifier. The accurate and reliable determination of Cd and Pb in sediments was possible also in the presence of boric acid. The use of a mixture of palladium and magnesium nitrate efficiently compensated for matrix effects and enabled the accurate and reliable determination of As in the sediments. Quantification of Cd and As was performed by calibration using acid matched standard solutions, while the standard addition method was applied for the quantification of Pb. The repeatability of the analytical procedure for the determination of Cd, Pb and As in sediments was ?5 % for Cd, ?4 % for Pb and ?2 % for As. The LOD values of the analytical procedure were found to be 0.05 mg/kg for Cd and 0.25 mg/kg for Pb and As, while the LOQ values were 0.16 mg/kg for Cd and 0.83 mg/kg for Pb and As. Finally, Cd, Pb and As were successfully determined in sediments of the Sava River in Slovenia.


2016 ◽  
Vol 1 (13) ◽  
Author(s):  
Nedjo Djurić ◽  
Petar Mitrović

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


1990 ◽  
Vol 140 (2) ◽  
pp. 341-348 ◽  
Author(s):  
N. Drndarski ◽  
D. Stojić ◽  
M. Župančić ◽  
S. Čupić

2016 ◽  
Vol 573 ◽  
pp. 1460-1471 ◽  
Author(s):  
Janja Vrzel ◽  
Branka Vuković-Gačić ◽  
Stoimir Kolarević ◽  
Zoran Gačić ◽  
Margareta Kračun-Kolarević ◽  
...  

Geoadria ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 81 ◽  
Author(s):  
Marijan Jukić

From the spatial planning aspect the river Sava is the meeting area of numerous spatial, natural and economic determinants. Appropriate and purposeful planning has an inestimable importance due to the fact that it is the only way for the rational utilization of the river basin. It should be emphasized that rational utilization also includes the overall protection of mentioned area. Special attention should be dedicated to the problem of defining spatial plan borders, because of the specific characteristics of the area. Namely,current spatial plans of the river Sava basin are outlined in a way that Sava river is their border instead of their skeleton. That approach, induced by cross-border issues between the neighbouring countries, especially Croatia and Bosnia and Herzegovina, disables the rational utilization, development and protection of the area. The preconditions of purposefully planning process of the Sava river are evaluation and determination of the common utilization of criteria and elements of the area. The latter refers to political circumstances since the river Sava flowsthroughseveral neighbouring countries. Consequently, it is a question of a spatial planning which, in case of the Sava river, has above-national importance because every faulty step jeopardizes balanced and sustainable development of a wide area. Taking into consideration the whole complexity of above mentioned, the main aim of this paper is to give contribution to the understanding of the spatial planning process in the way that planning, by itself, results in the sustainable management and development of the Sava river area.


2021 ◽  
Vol 79 (2) ◽  
pp. 71-74
Author(s):  
Tomislav Treer

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.


2020 ◽  
Vol 1 (22) ◽  
Author(s):  
Milenko Ćurĉić ◽  
Dragica Milinković ◽  
Dragana Radivojević ◽  
Dijana Đurić

Parallel with the research of Bacillariophyta flora in the well with shadoof on the area of Semberija was researched Bacillariophyta flora of other freshwater systems that are located in the near or distant environment from the researched wells, such as Drenovaĉa swamp, Sava river, Jelaz canal, artesian wells and ephemeral swamps. It is very interesting to compare Bacillariophyta flora that inhabits wells and Bacillariophyta flora of Drenovaĉa swamp that is only a dozen meters away from the researched well of Lazić Mijo, a local in the village Velino Selo.All identified Bacillariophyta in researched well belong to aerophile, which indicates on certain ecology of the well, that is a specific life conditions that are present in wells as anthropogenic creations. Contrary to the well flora, Bacillariophyta flora of Drenovaĉa swamp is composed party of algae belonging to benthos. In Lazić Mijo well were identified 33Bacillariophyta, all aerophile, while in Drenovaĉa swamp were identified 57 Bacillariophyta, from which only 18 are aerophile and others belong to benthos.Considering that Bacillariophyta is a component of aeroplankton, and that via air currents can be transmitted over long distances, it is assumed that similarly aerophile Bacillariophyta were transmitted on mosses associations on the well wall, manifested their adaptive attributes in such biotopes, and by that became autochthonous flora of the well. Large qualitative differences in Bacillariophyta flora in wells with shadoof and in Bacillariophyta flora of Drenovaĉa swamp also indicate on autochthony of Bacillariophyta flora of the well, which means that species were not transmitted from the neighborhood.


2017 ◽  
Vol 75 (4) ◽  
pp. 89-94
Author(s):  
Tomislav Treer ◽  
István Kubatov

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.


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