Silica retention in the Iron Gate I reservoir on the Danube River: the role of side bays as nutrient sinks

2006 ◽  
Vol 22 (4) ◽  
pp. 441-456 ◽  
Author(s):  
Daniel F. McGinnis ◽  
Serghei Bocaniov ◽  
Cristian Teodoru ◽  
Gabriela Friedl ◽  
Andreas Lorke ◽  
...  
Keyword(s):  
Danube River ◽  
The Danube River ◽  
Iron Gate ◽  
Nutrient Sinks ◽  
Silica Retention

scholarly journals Znaczenie Dunaju w europejskiej sieci dróg wodnych

Politeja ◽  
2021 ◽  
Vol 17 (6(69)) ◽  
pp. 101-112
Author(s):  
Agnieszka Małgorzata Kastory
Keyword(s):  
European Union ◽  
Negative Impact ◽  
Danube River ◽  
The European Union ◽  
Danube Basin ◽  
Trade Routes ◽  
The Danube River ◽  
Political Transformations ◽  
Danube Region

The Role of the Danube River in the Trans-European Waterway Network In the 20th century, the Danube Region was subject to numerous and far-reaching political transformations, which had a negative impact on the expansion of the Danube waterway transport, affected mainly by political, economical and military crises that took place in the 1990s. Nowadays, only 9% of all river cargo is shipped via the Danube River. The European Union makes an effort to increase this number up to 30%, and to ensure the river’s permanent inclusion in the Trans-European Transport Network, with an ongoing process of adjusting the Danube shipping law to the regulations applicable to other European rivers. Nonetheless, the implementation of the EU Strategy for the Danube Region has little effect on the transportation growth in the Danube Basin so far – due to insufficient support from the European Union, the Danubian countries’ unwillingness to carry out expensive investments, and difficulties related to the process of redirecting the existing trade routes.

Emerging contaminants in sediment core from the Iron Gate I Reservoir on the Danube River

2019 ◽  
Vol 662 ◽  
pp. 77-87 ◽  
Author(s):  
Ivana Matić Bujagić ◽  
Svetlana Grujić ◽  
Mila Laušević ◽  
Thilo Hofmann ◽  
Vesna Micić
Keyword(s):  
Sediment Core ◽  
Emerging Contaminants ◽  
Danube River ◽  
The Danube River ◽  
Iron Gate

scholarly journals Retention of Sediments and Nutrients in the Iron Gate I Reservoir on the Danube River

2005 ◽  
Vol 76 (3) ◽  
pp. 539-565 ◽  
Author(s):  
Cristian Teodoru ◽  
Bernhard Wehrli
Keyword(s):  
Danube River ◽  
The Danube River ◽  
Iron Gate

Macroinvertebrates along the Serbian section of the Danube River (stream km 1429–925)

Biologia ◽  
2007 ◽  
Vol 62 (2) ◽  
Author(s):  
Momir Paunovic ◽  
Dunja Jakovcev-Todorovic ◽  
Vladica Simic ◽  
Bojana Stojanovic ◽  
Predrag Cakic
Keyword(s):  
Species Richness ◽  
Correspondence Analysis ◽  
Distribution Patterns ◽  
Danube River ◽  
Qualitative Composition ◽  
Aquatic Macroinvertebrate ◽  
The Danube River ◽  
Iron Gate ◽  
Species Richness And Abundance ◽  
Macroinvertebrate Fauna

AbstractResults of the investigation of the aquatic macroinvertebrate fauna along a 504 km stretch of the Danube River in Serbia are presented. A total of 74 macroinvertebrate taxa were observed during a 2001 survey. Oligochaeta and Mollusca were the principal components of the community with regard to species richness and abundance. Based on data on the qualitative composition of the macroinvertebrate fauna, a correspondence analysis divided the investigated stretch in three sectors — upper (Pannonian), Iron Gate sector and entrance sector to the Iron Gate stretch. The distribution patterns of certain species supported the division of sectors defined by correspondence analysis.

scholarly journals Spatial distribution of multielements including lanthanides in sediments of Iron Gate I Reservoir in the Danube River

2021 ◽  
Author(s):  
Otilia Ana Culicov ◽  
Tatjana Trtić-Petrović ◽  
Roman Balvanović ◽  
Anđelka Petković ◽  
Slavica Ražić
Keyword(s):  
New Technologies ◽  
Environmental Fate ◽  
Hot Spot ◽  
Major And Trace Elements ◽  
Danube River ◽  
The Danube River ◽  
Iron Gate ◽  
Time Period ◽  
Two Samples ◽  
Deep Sediments

AbstractRecent studies show that lanthanides (Ln) are becoming emerging pollutants due to their wide application in new technologies, but their environmental fate, transport, and possible accumulation are still relatively unknown. This study aims to determine major and trace elements including Ln in the Danube River sediment which either belong or close to the Iron Gate Reservoir. The Iron Gate Reservoir is characterized by accumulation of sediments as an effect of building hydropower dam Iron Gate I. The surface sediments were collected on the Danube River—1141 to 864 km and three tributaries along this waterway. Two samples of deep sediments were used for comparison. The results indicate the significant upward enrichment of Zn, Sb, Cr, Nd, and Dy in sediments belongs to the Iron Gate Reservoir. The sample 4-Smed is labelled as a hot spot of contamination with Zn, Cr, As, Sb, Nd, and Dy. Also, a trend of increasing concentration in the time period from 1995 to 2016 was found for elements Zn, Cr, and Ni in sediment samples in the Iron Gate Reservoir. Chemometric analysis shows the grouping of sample sites into clusters characterized by the following properties: (i) increased concentration of all measured elements (samples within the Iron Gate Reservoir); (ii) increased Cu concentration (11-Pek); and (iii) lower concentrations of the measured elements (deep sediments). The data presented hereby contribute to the monitoring of pollution of the River Danube sediments and give the first view of Ln profile in the studied sediments.

scholarly journals Spatial Distribution of multielements including technology critical elements in sediments of the Danube River

2020 ◽  
Author(s):  
Otilia Ana Culicov ◽  
Tatjana Trtic-Petrovic ◽  
Roman Balvanović ◽  
Anđelka Petković ◽  
Slavica Ražić
Keyword(s):  
Spatial Distribution ◽  
Surface Sediments ◽  
New Technologies ◽  
Analytical Data ◽  
Danube River ◽  
The Danube River ◽  
Critical Elements ◽  
Iron Gate ◽  
Hydropower Dam ◽  
Two Samples

Abstract Background The pollution of the second-longest European river (the river Danube) has been under monitoring and focused on various contaminants including metals/metalloids (Hg, As, Ni, Zn, Cu, Cr, Pb, and Cd), personal care products, technical additives, pesticides, pharmaceuticals, etc. Recent studies show that technology critical elements (TCE) – elements with a high supply risk and economic importance – are becoming emerging pollutants due to their wide application in new technologies. According to the European Union Water Framework Directive, sediments are one of the three major sources of river pollution. This study aims to determine major and trace elements including some TCEs in the Danube River sediment. The concentrations of the targeted elements in the surface sediments were discussed in the sense of the effect of building hydropower dam Iron Gate I and increasing the quantity of sediments in the Iron Gate gorge. Results The surface sediments were collected on the Danube River-km 1141 to 864 and three tributaries along this waterway. Two samples of deep sediments were used for comparison. Instrumental Neutron Activation Analysis was applied for quantification of 36 elements, with special attention to selected TCE belonging to lanthanides (La, Ce, Nd, Sm, Eu, Gd, Tb, Dy, Tm, and Yb). Spatial distribution is discussed (i) in the total pool of all analyzed elements and (ii) only lanthanides. For better understanding and to highlight a hidden relationship between targeted elements, multivariate statistical techniques (cluster analysis and principal component analysis) were applied to analyze the analytical data and to identify possible pollution sources. The obtained results of the targeted elements in the surface sediments were discussed in relation to the influence of hydropower dam Iron Gates I and the increasing quantity of sediments. Conclusion Overall results show increasing concentration of almost all investigated elements in the surface sediments from the Danube River-km 1112 to the dam. Sediment od the River Pek was separated as a location with extreme anthropogenic influence due to close vicinity of the copper mining site.

scholarly journals Characterization of the Karst water regime in the Danube catchment area (Bulgaria)

2016 ◽  
Vol 96 (1) ◽  
pp. 11-25 ◽  
Author(s):  
Evelina Damyanova ◽  
Aleksey Benderev
Keyword(s):  
Black Sea ◽  
Catchment Area ◽  
Monitoring Network ◽  
Danube River ◽  
The Black Sea ◽  
Karst Water ◽  
Karst Springs ◽  
The Danube River ◽  
Danube Catchment

The purpose of study is to estimate the role of karst springs in the formation of the flow of the Bulgarian rivers that are right tributaries of the Danube River. The study area includes the region from the Danube River to the main ridge of the Balkan (Stara Planina), representing a major water divide that separates the Black Sea catchment area from the Aegean one. The eastern border represents the watershed between the Danube and the Black Sea hydrological zones. From a geological point of view, the northern part of the area is located on the Moesian platform and the southern part belongs to the Fore Balkan and Balkan areas where various types of rocks of different geologic age outcrop. In some of them, there are conditions for the formation of karst water. In the northern part of the area they form distinct aquifers that gradually sink to the north; this is so called "platform" type of karst. In the southern mountainous part there are numerous karst basins. The most significant of karst springs are included in the national groundwater monitoring network. The hydrographs of karst springs are analyzed in view of the specific features of karstification. To classify the studied springs with respect to their regime, several indicators are used. Furthermore, the role of karst waters in the river runoff of the Bulgarian tributaries of the Danube River is assessed.

scholarly journals Results of investigating the macroinvertebrate community of the Danube River on the sector upstream from the Iron Gate (km 1083-1071)

2005 ◽  
Vol 57 (1) ◽  
pp. 57-63 ◽  
Author(s):  
Momir Paunovic ◽  
Vladica Simic ◽  
Dunja Jakovcev-Todorovic ◽  
Bojana Stojanovic
Keyword(s):  
Principal Components ◽  
Habitat Diversity ◽  
Aquatic Macroinvertebrates ◽  
Macroinvertebrate Community ◽  
Danube River ◽  
Faunal Composition ◽  
The Danube River ◽  
Iron Gate ◽  
The Given

The present work cites results of investigating aquatic macroinvertebrates of the Danube River on the sector upstream from the Iron Gate (KM 1083-1071). The investigated part is interesting from the hydrobiological standpoint above all due to differences of faunal composition in relation to higher sections that could be expected in view of differences in overall characteristics of the river. A rich macroinvertebrate community (84 taxa) was observed. The diversity of taxa is primarily a result of habitat diversity within the given stretch. Oligochaeta and Mollusca were the principal components.

scholarly journals Biogenic silica accumulation in the sediments of Iron Gate I Reservoir on the Danube River

2006 ◽  
Vol 68 (4) ◽  
pp. 469-481 ◽  
Author(s):  
Cristian Teodoru ◽  
Aristidis Dimopoulos ◽  
Bernhard Wehrli
Keyword(s):  
Biogenic Silica ◽  
Danube River ◽  
The Danube River ◽  
Iron Gate
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