Journal articles: 'Hydromorphological assessment'

1

Stefanidis, Konstantinos, Theodora Kouvarda, Anna Latsiou, George Papaioannou, Konstantinos Gritzalis, and Elias Dimitriou. "A Comparative Evaluation of Hydromorphological Assessment Methods Applied in Rivers of Greece." Hydrology 9, no. 3 (February 24, 2022): 43. http://dx.doi.org/10.3390/hydrology9030043.

Full text

Abstract:

The ecological assessment of all surface water bodies in Europe according to the Water Framework Directive involves the monitoring of biological, physicochemical and hydromorphological quality elements. For the hydromorphological assessment in particular, there are numerous methods that have been developed and adopted by EU member countries. With this study, we compared three different methods (River Habitat Survey, Morphological Quality Index and River Hydromorphology Assessment Technique) applied in 122 river reaches that are part of the National Monitoring Network of Greece. The main objectives were (a) to identify whether different assessment systems provide similar classifications of hydromorphological status and (b) to distinguish strengths and weaknesses associated with the implementation of each method. Our results show that the River Hydromorphology Assessment Technique (RHAT) and the Morphological Quality Index (MQI) resulted in the same classification for 58% of the studied reaches, while 34% of the remaining cases differed by only one quality class. Correlations between the two indices per river type (ICT) showed that the two indices were strongly correlated for water courses located at low altitudes. Concerning the HMS index of the River Habitat Survey (RHS), which is an index that reflects the overall hydromorphological pressure, it showed larger differences with the other two indices, mainly because it classified more sites as “Poor” and “Bad” quality classes. Based on our results, we recommend that the two indices, RHAT and MQI, can be implemented complementary to the RHS for providing a rather easy and quick assessment of the overall hydromorphological status, at least until a national hydromorphological database is compiled that will allow for the proper adaptation of the Habitat Quality Assessment (HQA) index.

APA, Harvard, Vancouver, ISO, and other styles

2

Kujanová, Kateřina, and Milada Matoušková. "Improvement in physical river habitat quality in response to river restoration measures." Geografie 121, no. 1 (2016): 54–78. http://dx.doi.org/10.37040/geografie2016121010054.

Full text

Abstract:

The main goal of this paper is to verify the hypothesis that application of appropriate restoration measures can lead to an improvement in river habitat quality and to achieve good hydromorphological conditions within the ecological status under the Water Framework Directive 2000/60/ES. The study includes an analysis of river network modifications founded on comparing historical and present-day maps, a determination of regional hydromorphological reference conditions based on a field survey and measurements, an assessment of hydromorphological quality of the studied water body and a proposal of appropriate restoration measures. The effects on improvement in hydromorphological status were predicted on the basis of a simulation of hydromorphological conditions after the application of proposed restoration measures. Overall, at least a good hydromorphological status would be achieved. The study proved that it is essential to carry out a hydromorphological survey including a determination of reference conditions as it provides some outputs necessary for a proposal and application of efficient restoration.

APA, Harvard, Vancouver, ISO, and other styles

3

Lóczy, Dénes, József Dezső, Szabolcs Czigány, and Ervin Pirkhoffer. "Hydromorphological assessment of the lower Hungarian Drava section and its floodplain." Landscape & Environment 10, no. 3-4 (August 28, 2016): 109–16. http://dx.doi.org/10.21120/le/10/3-4/2.

Full text

Abstract:

The hydromorphological properties of rivers and their floodplains receive increased attention both in basic research and water management. A comparison of hydromorphological parameters before and after river regulation (involving floodplain drainage) provides important information for river management, particularly floodplain rehabilitation. The paper assesses a selected reach of the Drava River and the corresponding floodplain utilising two international approaches, the REFORM framework and the Italian Morphological Quality Index.

APA, Harvard, Vancouver, ISO, and other styles

4

Borek, Łukasz. "Assessment and classification of hydromorphological state of the Breń River." Journal of Water and Land Development 30, no. 1 (September 1, 2016): 21–27. http://dx.doi.org/10.1515/jwld-2016-0017.

Full text

Abstract:

Abstract The paper presents the classification of the hydromorphological condition of the Breń River according to the River Habitat Survey (RHS). The research of the hydromorphological assessment of the Breń River, which is a right-bank tributary of the Vistula River and almost entirely flows through the area of the Dąbrowa Tarnowska district was conducted in June 2015. The research sites were situated on the border of the Tarnów Plateau and the Vistula Lowland. The Breń River in these sections flows through rural areas used for agricultural purposes with low-density housing. The analysis of qualitative parameters describing the morphological characteristics were based on two synthetic indices of stream quality: Habitat Quality Assesment (HQA) and Habitat Modification Score (HMS). The calculated numerical values of the two indices proved that the sections of the Breń River correspond with the third and fifth class, which means a moderate (III) and very bad (V) hydromorphological condition.

APA, Harvard, Vancouver, ISO, and other styles

5

Šípek, Václav, Milada Matoušková, and Martin Dvořák. "Comparative analysis of selected hydromorphological assessment methods." Environmental Monitoring and Assessment 169, no. 1-4 (September 17, 2009): 309–19. http://dx.doi.org/10.1007/s10661-009-1172-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Kirichenko, Larysa, Aliaksandr Volchak, and Anna Golovach. "Ecological condition of water bodies of the south-west of Belarus in spring 2020." E3S Web of Conferences 212 (2020): 01007. http://dx.doi.org/10.1051/e3sconf/202021201007.

Full text

Abstract:

In this work, hydrochemical and hydromorphological characteristics of urban reservoirs of southwestern Belarus in the spring of 2020 were investigated. Hydromorphological characteristics of reservoirs were determined by field methods and GIS mapping methods. Hydrochemical assessment of water quality of reservoirs in the spring period was carried out according to 15 indicators. Multivariate statistical methods were used to analyze surface water quality. Based on the analysis of hydrochemical and hydromorphological indicators, an assessment of the ecological state of the reservoirs of the urboterritories of southwestern Belarus in the spring period of 2020 was given. During the study, patterns of distribution of morphometric characteristics of the reservoirs within the studied territory were established. The analysis of hydrochemical characteristics showed that the water quality of urban reservoirs depends on the types of anthropogenic effects.

APA, Harvard, Vancouver, ISO, and other styles

7

Stefanidis, Konstantinos, Anna Latsiou, Theodora Kouvarda, Anastasia Lampou, Nektarios Kalaitzakis, Konstantinos Gritzalis, and Elias Dimitriou. "Disentangling the Main Components of Hydromorphological Modifications at Reach Scale in Rivers of Greece." Hydrology 7, no. 2 (April 8, 2020): 22. http://dx.doi.org/10.3390/hydrology7020022.

Full text

Abstract:

The Water Framework Directive (WFD) requires from member states to monitor hydromorphological features of rivers in order to assess their ecological quality. Thus, numerous hydromorphological assessment methods have been developed with most of them focusing on the dynamics of hydrology, geomorphology and riparian zone extent. Within the scope of this study, we assessed the hydromorphological features of 106 river reaches distributed among thirteen WFD River Basin Districts (RBDs) to identify the main drivers of hydromorphological perturbation at a national scale. The studied reaches reflect a wide range of natural variability as they include various types of watercourses extending from lowlands to mid-altitude and mountainous systems. We employed the River Habitat Survey (RHS), and we recorded hydromorphological features and modifications in both banks and the channel bed along 500 m for each reach. Then, the Habitat Modification Score (HMS) and the individual sub-scores that indicate the extent of specific modifications (e.g., bridges, fords, weirs, bank reprofiling, bank reinforcement, etc.) were calculated in order to a) assess the severity of the total artificial modification and b) to highlight the most common and severe causes of overall alteration. The results showed that alterations such as reprofiling and reinforcement of banks contributed the most to the total HMS followed by the presence of fords and bridges. Particularly, the bank alterations indicate a serious deterioration of the longitudinal profile of the reaches, while the occurrence of many fords and bridges is the main cause for perturbations that affect locally the stream cross-sectional profile. Overall, these results compile a first nationwide assessment of the hydromorphological status of Greek rivers in line with the WFD and set the basis for further research that will focus on the diversity of stream habitat features as a measure for the overall ecological quality.

APA, Harvard, Vancouver, ISO, and other styles

8

Szpikowski, Józef, and Grażyna Szpikowska. "Hydromorphological and physicochemical conditions of the Parsęta River." Bulletin of Geography. Physical Geography Series 15, no. 1 (December 1, 2018): 53–62. http://dx.doi.org/10.2478/bgeo-2018-0015.

Full text

Abstract:

Abstract Rivers are hydromorphologically assessed in line with the Water Framework Directive. In order to assess the quality of the Parsęta River environment, the River Habitat Survey method was applied. The research studies, conducted in June 2016, provided an overview of hydromorphological issues, and also covered measurements and laboratory analyses on the quality of its waters. There were 24 measuring sections selected along the whole river. The selection of these sections took into account the representativeness of genetically various types of river valley, its size and discharge, and the variability of anthropogenic pressure. The assessment showed that the Parsęta River varies in natural quality (its HQA index ranged from 17 to 61) and that the modification of its valley is variable but generally low (its HMS index ranged from 0 to 33). Seventy-nine percent of the analysed sections were classified to the second (II) and third (III) hydromorphological classes, 8% to the first (I), and 13% to the fourth (IV). The central section of the Parsęta River has the highest degree of naturalness and the lowest degree of transformation. The river valley sections of kettle-hole origin are more transformed than those of fluvial origin. The quality of the Parsęta River waters assessed on the grounds of their physicochemical parameters indicates that the river is in good condition. The individual river water parameters are most often within the first (I) and second (II) classes. Any instances of the quality of waters being below the “good” level are due to phosphate concentrations exceeding the second (II) class and are contained within a 15-km stretch of the river below Białogard. A river section with a high degree of hydromorphological naturalness has the worst quality of waters.

APA, Harvard, Vancouver, ISO, and other styles

9

Chico, G., B. Clutterbuck, J. Clough, R. Lindsay, N. G. Midgley, and J. C. Labadz. "Geo‐hydromorphological assessment of Europe's southernmost blanket bogs." Earth Surface Processes and Landforms 45, no. 12 (July 8, 2020): 2747–60. http://dx.doi.org/10.1002/esp.4927.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Kyryliuk, Serhii. "The assessment algorithm for sustainable development goals in the Hukiv, Dereluy, and Vyzhenka river basin systems of Chernivtsi oblast." Present Environment and Sustainable Development 15, no. 2 (October 3, 2021): 235–44. http://dx.doi.org/10.15551/pesd2021152019.

Full text

Abstract:

The study deals with an integral assessment of hydromorphological and geoecological conditions of the Hukiv (flatland type of river), Dereluy (foothill type of river), and Vyzhenka (mountainous type of river) river basin systems (Figure 1). The indicators characterizing the river basin in the best way as a holistic system, the channel, floodplain, and watershed altogether, in natural reference conditions and in terms of human economic activity are addressed. The assessment hydromorphological test and geoecological monitoring of small rivers (SWOT-analysis) in accordance with the developed universal algorithm for hydromorphological assessment of small river basins for the sustainable development goals are generated and fulfilled. Interpretation maps for the sustainable development of the Hukiv, Dereluy and Vyzhenka rivers are created. The practical importance and relevance concerns the potential application of the proposed monitoring and the algorithm to solve methodological and applied problems related to the functioning of the systems “basin–river–human” and “basin–river–riverbed” in terms of modern human activity and needs; the need to modify consumer-type stereotypes for the use of natural resources, as well as to provide recommendations for enhancing the resource-efficient and sustainable activities in basin systems and small rivers.

APA, Harvard, Vancouver, ISO, and other styles

11

Szoszkiewicz, Krzysztof, Szymon Jusik, Daniel Gebler, Krzysztof Achtenberg, Mariusz Adynkiewicz-Piragas, Artur Artur Radecki-Pawlik, Tomasz Okruszko, Karol Pietruczuk, Marcin Przesmycki, and Przemysław Nawrocki. "Hydromorphological Index for Rivers: A New Method for Hydromorphological Assessment and Classification for Flowing Waters in Poland." Journal of Ecological Engineering 21, no. 8 (November 1, 2020): 261–71. http://dx.doi.org/10.12911/22998993/126879.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Nawieśniak, Maria. "Hydromorphological and landscape assessment of the Białka river valley." Acta Scientiarum Polonorum Formatio Circumiectus 2 (2018): 3–11. http://dx.doi.org/10.15576/asp.fc/2018.17.2.3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Mentzafou, Angeliki, George Varlas, Anastasios Papadopoulos, Georgios Poulis, and Elias Dimitriou. "Assessment of Automatically Monitored Water Levels and Water Quality Indicators in Rivers with Different Hydromorphological Conditions and Pollution Levels in Greece." Hydrology 8, no. 2 (May 31, 2021): 86. http://dx.doi.org/10.3390/hydrology8020086.

Full text

Abstract:

Water resources, especially riverine ecosystems, are globally under qualitative and quantitative degradation due to human-imposed pressures. High-temporal-resolution data obtained from automatic stations can provide insights into the processes that link catchment hydrology and streamwater chemistry. The scope of this paper was to investigate the statistical behavior of high-frequency measurements at sites with known hydromorphological and pollution pressures. For this purpose, hourly time series of water levels and key water quality indicators (temperature, electric conductivity, and dissolved oxygen concentrations) collected from four automatic monitoring stations under different hydromorphological conditions and pollution pressures were statistically elaborated. Based on the results, the hydromorphological conditions and pollution pressures of each station were confirmed to be reflected in the results of the statistical analysis performed. It was proven that the comparative use of the statistics and patterns of the water level and quality high-frequency time series could be used in the interpretation of the current site status as well as allowing the detection of possible changes. This approach can be used as a tool for the definition of thresholds, and will contribute to the design of management and restoration measures for the most impacted areas.

APA, Harvard, Vancouver, ISO, and other styles

14

Moldoveanu, Marinela, Stelian-Valentin Stănescu, and Andreea-Cristina Gălie. "Post-Construction, Hydromorphological Cumulative Impact Assessment: An Approach at the Waterbody Level Integrating Different Spatial Scales." Water 15, no. 3 (January 17, 2023): 382. http://dx.doi.org/10.3390/w15030382.

Full text

Abstract:

The environmental impact assessment is a process required in many countries. It highlights future activities with a significant impact on the environment. Water, as an environmental factor, needs adequate methods for quantifying cumulative impact of hydrotechnical works. In most cases, for new developments, baseline data is collected before the beginning of the construction, but for waterworks already in place, a different approach is needed. In line with the EU Water Framework Directive (Directive 2000/60/EC), the overall purpose of the research is to develop an approach for the hydromorphological cumulative impact assessment integrating different spatial scales for existing water intakes with transversal barriers on mountain rivers in Romania. Being a research study developed for a specific issue—post-construction impact assessment, some innovative actions were required. Lack of information in the pre-construction phase was an important constraint. Customizing formulas of certain indicators established within the Romanian method for hydromorphological status assessment of rivers proved to be a practical solution to show both local and waterbody hydromorphological impact. Upscaling the impact from the local scale to the river sector and the waterbody allows awareness of the spatial extent of the impact and understanding of the importance of the thresholds of significant impact for a broader audience. In order to better highlight the approach, this paper shows practical examples. The whole chain of the drivers–pressures–state–impacts–responses (DPSIR) framework is applied in the case of two river water bodies with hydropower generation facilities in place. In addition, some recommendations for actions are provided.

APA, Harvard, Vancouver, ISO, and other styles

15

Müller, Helene, Stephan Hörbinger, Fabian Franta, Ana Mendes, Jianhua Li, Ping Cao, Baiyin Baoligao, Fengran Xu, and Hans Peter Rauch. "Hydromorphological Assessment as the Basis for Ecosystem Restoration in the Nanxi River Basin (China)." Land 11, no. 2 (January 26, 2022): 193. http://dx.doi.org/10.3390/land11020193.

Full text

Abstract:

Hydromorphology is a major component of riverine ecosystems. Therefore, proper assessments of the status quo, as well as the detection of pressures in river basins, are of high relevance. Process-based morphological methods have been developed, relying on a broad data basis and resulting in suitable instruments, such as the Morphological Quality Index (MQI). In this study, the hydromorphological status of the Nanxi river system in Eastern China was assessed by an adapted application of the MQI. Adaptations and amendments in the methodical approach were developed in cycles and carried out to transfer the well-approved method for European river systems to another geographical setting. The strengths of the tested approach are the few data requirements, the applicability for modified river basins, and the decoupling of historical information. The assessment of 161 river kilometers resulted in a hydromorphological status quo with the focus being a relative comparison of different sections ranging from “moderate” to “bad”, with an average classification of a “poor” state. On the one hand, the results build the basis for future restoration and river management planning, specifically, and on the other hand, they create a foundation for the development of an assessment method fitted for modified river systems conditions.

APA, Harvard, Vancouver, ISO, and other styles

16

Murtaza, Mehdi Rian*, and Ali Berktay Haque Tunio. "Hydromorphological assessment in North Morocco: The case of Martil River." International Journal of Current Engineering and Technology 11, no. 03 (March 3, 2021): 306–13. http://dx.doi.org/10.14741/ijcet/v.11.3.2.

Full text

Abstract:

The present study is about an assessment of the Martil River restoration, which crosses Tetouan and Martil city in Northern Morocco. The evaluation compromises rainfall occurrence of 30 years, riparian habitats, and the river flow of 12 years. The rainfall analysis was carried out by the Standard Precipitation Index (SPI). Only three stations that contain continuous monthly precipitation data were considered. The river health and water quality were determined by the QBR (Riparian Habitat Quality), while the environmental flow was estimated by Tennant method. SPI results show a rainfall increment pattern with regular, extreme, and plentiful downpours causing rough deluges and floods. The ultimate flow result to support the river habitats was found 60% of the natural flow in the main channel. This study highlights the stream’s unhealthy water, which falls within the low-quality water category downstream the river under anthropogenic pressure, while good to excellent quality was scored upstream the watershed. Tennant outcomes were discovered 2.40 m³/s as 30% and 5.51 m³/s as 60%, while 10% of the flow was found to be not adequate for habitats in the Martil River.

APA, Harvard, Vancouver, ISO, and other styles

17

Stefanidis, Papaioannou, Markogianni, and Dimitriou. "Water Quality and Hydromorphological Variability in Greek Rivers: A Nationwide Assessment with Implications for Management." Water 11, no. 8 (August 13, 2019): 1680. http://dx.doi.org/10.3390/w11081680.

Full text

Abstract:

European rivers are under ecological threat by a variety of stressors. Nutrient pollution, soil erosion, and alteration in hydrology are considered the most common problems that riverine ecosystems are facing today. Not surprisingly, river monitoring activities in Europe have been intensified during the last few years to fulfil the Water Framework Directive (WFD) requirements. With this article, we present a nationwide assessment of the water quality and hydromorphological variability in Greek Rivers based on the results of the national monitoring program under the WFD. Water quality and hydromorphological data from 352 sites belonging to 221 rivers were explored with principal component analysis (PCA) to identify main environmental gradients and the variables that contribute the most to the total variance. Nitrate, phosphate, ammonium and electrical conductivity were identified as the most important water chemistry parameters, and typical vector-based spatial data analysis was applied to map their spatial distribution at sub-basin scale. In addition, we conducted simple linear models between the aforementioned parameters and the share of land uses within the basin of each sampling site in order to identify significant relationships. Agriculture was the most important land use affecting the nitrate and electrical conductivity, while artificial surfaces were the best predictor for phosphate and ammonium. Concerning the hydromorphological variability, fine types of substrate and discharge were the variables with the highest contribution to the total variance. Overall, the results of this article can be used for the preliminary assessment of susceptible areas/rivers to high levels of nutrient pollution that can aid water managers to formulate recommendations for improvement of further monitoring activities. Furthermore, our findings implicate the need for enhancement of agri-environmental measures and reduction of point-source pollution in disturbed areas to avert the risk of further environmental degradation under the anticipated global change.

APA, Harvard, Vancouver, ISO, and other styles

18

Rinaldi, M., B. Belletti, M. Bussettini, F. Comiti, B. Golfieri, B. Lastoria, E. Marchese, L. Nardi, and N. Surian. "New tools for the hydromorphological assessment and monitoring of European streams." Journal of Environmental Management 202 (November 2017): 363–78. http://dx.doi.org/10.1016/j.jenvman.2016.11.036.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Benjankar, Rohan, Frauke Koenig, and Daniele Tonina. "Comparison of hydromorphological assessment methods: Application to the Boise River, USA." Journal of Hydrology 492 (June 2013): 128–38. http://dx.doi.org/10.1016/j.jhydrol.2013.03.017.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Strona, Giovanni, Simone Fattorini, Barbara Fiasca, Tiziana Di Lorenzo, Mattia Di Cicco, Walter Lorenzetti, Francesco Boccacci, and Diana M. P. Galassi. "AQUALIFE Software: A New Tool for a Standardized Ecological Assessment of Groundwater Dependent Ecosystems." Water 11, no. 12 (December 6, 2019): 2574. http://dx.doi.org/10.3390/w11122574.

Full text

Abstract:

We introduce a suite of software tools aimed at investigating multiple bio-ecological facets of aquatic Groundwater Dependent Ecosystems (GDEs). The suite focuses on: (1) threats posed by pollutants to GDE invertebrates (Ecological Risk, ER); (2) threats posed by hydrological and hydromorphological alterations on the subsurface zone of lotic systems and groundwater-fed springs (Hydrological-Hydromorphological Risk, HHR); and (3) the conservation priority of GDE communities (Groundwater Biodiversity Concern index, GBC). The ER is assessed by comparing tolerance limits of invertebrate species to specific pollutants with the maximum observed concentration of the same pollutants at the target site(s). Comparison is based on an original, comprehensive dataset including the most updated information on tolerance to 116 pollutants for 474 freshwater invertebrate species. The HHR is assessed by accounting for the main direct and indirect effects on both the hyporheic zone of lotic systems and groundwater-fed springs, and by scoring each impact according to the potential effect on subsurface invertebrates. Finally, the GBC index is computed on the basis of the taxonomical composition of a target community, and allows the evaluation of its conservation priority in comparison to others.

APA, Harvard, Vancouver, ISO, and other styles

21

Szczepocka, Ewelina, Paulina Nowicka-Krawczyk, Rafał M. Olszyński, and Joanna Żelazna-Wieczorek. "Response of diatom assemblages to the disruption of the running water continuum in urban areas, and its consequences on bioassessment." PeerJ 9 (November 23, 2021): e12457. http://dx.doi.org/10.7717/peerj.12457.

Full text

Abstract:

Transformation of river and stream channels disrupts their natural ecological cycles and interrupts the continuum of their ecosystems. Changes in natural hydromorphological conditions transform lotic communities into those atypical of flowing waters, resulting in bioassessment procedures yielding incorrect results. This study shows how hydromorphological transformations of ecosystems affect the ecological status bioassessment results by disturbing diatom communities typical for rivers. Moreover, the article presents a new biological assessment procedure for urban transformed rivers including the verification of the community structure based on autecology and quantity of species. The ecological status of the ecosystem was assessed using benthic diatom assemblages and supported with results of hydrochemical analysis. The structure of the assemblages and their relationships between individual sampling sites were clarified by shade plot and multivariate data analyses. The analysis of dominant species vitality at sampling sites and their autecology gave the foundation for modification of taxa data matrix and recalculation the diatom indices. Biological assessment showed that one of the artificial ponds constructed at the stream channel was characterized by good ecological status, and its presence strongly affected the state of the downstream ecosystem following the development of a unique assemblage of diatoms that prefer oligosaprobic and oligotrophic waters. The presence of these species was also noted in the downstream sections, but most of the cells were dead. As the indicator values of these taxa are high, their presence artificially increased the ecological status of the stream, resulting in the hydrochemical assessment not being in line with the bioassessment. Therefore, a new procedure was adopted in which non-characteristic taxa for the downstream sections were excluded from analysis. This approach corrected the results of bioassessment characterizing the ecological status of the stream as poor along its entire course, with the exception of this unique pond. For hydromorphologically transformed streams and rivers with disturbed channel continuity, the correct result of an incorrect diatom-based bioassessment may be retrieved after excluding species unusual for the type of ecosystem from the studied assemblages, i.e., the species which are unable to reproduce in that area and are only carried into it by the water flow. Assessment of the ecological status of aquatic ecosystems based on biotic factors is an essential tool of aquatic ecosystems monitoring in many countries. This type of assessment requires a multifaceted approach, in particular, to identify factors that may disrupt this assessment. Standardization of biomonitoring methods is an important step in correct assessment; thus, the findings of this paper will be useful in routine biomonitoring around the world.

APA, Harvard, Vancouver, ISO, and other styles

22

Latinopoulos, Dionissis, Chrysoula Ntislidou, and Ifigenia Kagalou. "Impact Assessment of Habitat and Hydromorphological Alterations in Two Heavily Modified Lakes." Proceedings 2, no. 11 (July 31, 2018): 622. http://dx.doi.org/10.3390/proceedings2110622.

Full text

Abstract:

A description of hydromorphological pressures is required by the Water Framework Directive, however, there is not a commonly accepted assessment method. This study aims to explore a description tool application, not used before in Greece, for the quantification of the human impact extent on natural environment. Thus, in lakes Kastoria and Pamvotis, the Lake Habitat Survey was applied in the field and remotely to map the pressures, to examine confidence, suitability and ease of applicability through plot quantitative description, to calculate the “Lake Habitat Quality Assessment”, “Lake Habitat Modification Score” and “Alteration of Lake Morphology Score” indices.

APA, Harvard, Vancouver, ISO, and other styles

23

Nawieśniak-Caesar, Maria, Józef Hernik, and Mateusz Strutyński. "LANDSCAPE AND HYDROMORPHOLOGICAL ASSESSMENT OF A MOUNTAIN RIVER VALLEY AFTER FLOOD STAGE." Acta Scientiarum Polonorum Formatio Circumiectus 18, no. 1 (March 30, 2019): 75–87. http://dx.doi.org/10.15576/asp.fc/2019.18.1.75.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Zieliński, Piotr, and Tomasz Suchowolec. "Hydromorphological assessment of the anastomosing section of the Narew River after restoration." Limnological Review 13, no. 1 (March 1, 2013): 51–59. http://dx.doi.org/10.2478/limre-2013-0006.

Full text

Abstract:

AbstractFive parallel channels of the Narew River (NE Poland) were hydromorphologically assessed with the River Habitat Survey (RHS) method. Four out of the five studied channels were partly separated from the functioning system of the anastomosing river by a dike for more than 20 years, and were subjected to gradual overgrowing and shallowing. In the 1990’s and in 2002, a number of renaturisation measures were implemented, restoring sufficient discharge for the channels to make them active again. The Habitat Modification Score (HMS) obtained as a result of the survey only classifies the fragment ecologically to the third class of streams with high HMS value in the case of the current main channel of the Narew River (largely formed in an artificial manner). This suggests substantial anthropogenic changes in the river channel and its vicinity. The aggregate values of the Habitat Quality Assessment (HQA) index suggest the preservation of numerous environmentally valuable elements at all of the five studied sites of the anastomosing Narew River system. This even concerns channels which remained almost separated and functioned as oxbow lakes for more than 20 years. The highest HQA values were recorded in the case of the channel constituting the main channel before the regulation, and a neighbouring regulated channel currently fulfilling the function of the main water course in this cross-section. In spite of long-term negative changes, the studied fragment of the ecosystem of the anastomosing river is distinguished by high resistance to “anthropogenic stress”, and high capacity for spontaneous restoration of a state close to the natural one. Although lotic ecosystems constitute elements of the natural environment particularly sensitive to anthropopressure, they retain the ability to regenerate for a long time, under the condition of providing them with relevant hydrological and ecological conditions.

APA, Harvard, Vancouver, ISO, and other styles

25

Hamerla, Adam, and Leszek Trząski. "ASSESSMENT OF HYDROMORPHOLOGICAL CONDITIONS OF URBAN STREAMS WITH URBAN RIVER SURVEY METHOD." Inżynieria Ekologiczna 41 (2015): 26–35. http://dx.doi.org/10.12912/23920629/1826.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Wiejaczka, Łukasz, and Małgorzata Kijowska-Strugała. "Assessment of the hydromorphological state of Carpathian rivers above and below reservoirs." Water and Environment Journal 29, no. 2 (March 7, 2014): 277–87. http://dx.doi.org/10.1111/wej.12082.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

England, Judy, and Angela M. Gurnell. "Incorporating catchment to reach scale processes into hydromorphological assessment in the UK." Water and Environment Journal 30, no. 1-2 (March 2016): 22–30. http://dx.doi.org/10.1111/wej.12172.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Ollero, Alfredo, Askoa Ibisate, Laura Elísabet Gonzalo, Vanesa Acín, Daniel Ballarín, Elena Díaz, Sergio Domenech, and Marcos Gimeno. "The IHG index for hydromorphological quality assessment of rivers and streams: updated version." Limnetica 30, no. 2 (December 15, 2011): 255–62. http://dx.doi.org/10.23818/limn.30.19.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Latsiou, Anna, Theodora Kouvarda, Konstantinos Stefanidis, George Papaioannou, Konstantinos Gritzalis, and Elias Dimitriou. "Pressures and Status of the Riparian Vegetation in Greek Rivers: Overview and Preliminary Assessment." Hydrology 8, no. 1 (March 23, 2021): 55. http://dx.doi.org/10.3390/hydrology8010055.

Full text

Abstract:

Riparian zones play an important role in the ecological stability of rivers. In particular, the quality of the riparian vegetation is a significant component of the hydromorphological status. In Europe, the QBR index (Qualitat del Bosc de Ribera) and the River Habitat Survey (RHS) are commonly used for the qualitative assessment of the riparian vegetation. In this study, we estimated the QBR index and the Riparian Quality index, which is derived from the RHS method, for 123 river reaches of the National Monitoring Network of Greece. Our field work included the completion of RHS and QBR protocols, as well as the use of Unmanned Aerial Vehicles (UAVs). The aim of this study is to assess the riparian vegetation status and to identify linkages with the dominant land uses within the catchment. Correlation analysis was used to identify the relationships between hydromorphological alterations and the degradation of the riparian vegetation, as well as their connection to land uses in the catchment area. Our results highlighted severe modifications of the riparian vegetation for the majority of the studied reaches. We also showed a differentiation of the QBR with respect to changes in the altitude and the land uses in the catchment area. Overall QBR reflects the variation in the riparian vegetation quality better than RQI. Our findings constitute an assessment of the status of the riparian zones in Greek rivers and set the basis for further research for the development of new and effective tools for a rapid quality assessment of the riparian zones.

APA, Harvard, Vancouver, ISO, and other styles

30

Belyakov, Pakhom, Sergey Konopatsky, and Polina Rzhakovskaya. "Influence of the Southern area of the Ust-Luga commercial sea port on the channel regime of the Khabolovka river." E3S Web of Conferences 363 (2022): 01019. http://dx.doi.org/10.1051/e3sconf/202236301019.

Full text

Abstract:

The problem investigated in the framework of this work is devoted to the study of changes in the hydrological and channel regimes of the estuary region after the construction of the Southern Port area. The object of the study is the Khabolovka River, which flows into the Luga Bay. Based on the materials of channel surveys, the article gives a modern assessment of the general condition of the channel, presents data on manmade changes in the hydromorphological structure. After the conducted research, it was determined which consequences affecting the hydromorphological appearance of the considered section of the river have now occurred from the influence of various factors. Taking into account the performed and studied in detail analysis of riverbed transformations on the river section, it is possible to formulate the main conclusions and recommendations. As a result, a forecast of the further course and changes of the estuary area of the river is given if the necessary measures to protect against wind-wave influence are not carried out.

APA, Harvard, Vancouver, ISO, and other styles

31

Stefanidis, Konstantinos, Georgios Dimitrellos, Maria Sarika, Dionysios Tsoukalas, and Eva Papastergiadou. "Ecological Quality Assessment of Greek Lowland Rivers with Aquatic Macrophytes in Compliance with the EU Water Framework Directive." Water 14, no. 18 (September 6, 2022): 2771. http://dx.doi.org/10.3390/w14182771.

Full text

Abstract:

Aquatic macrophytes are one of the four biological quality elements (BQE) used for assessing the ecological status of inland waters according to the EU Water Framework Directive (WFD 2000/60). With this article, we present the methodological approach for the implementation of a WFD compliant macrophyte index to the riverine systems of Greece. In addition to the definition and harmonization of the ecological quality class boundaries, the results from the pilot application of the index and the ecological classification of the monitored river reaches are also presented. Aquatic plants and environmental parameters were sampled from 93 river reaches between 2012 and 2015. A multivariate analysis with optimal scaling (MVAOS) was conducted to define the main stressor gradient and to identify the least disturbed sites and the reference conditions that are required for the derivation of the ecological quality classes. The Macrophyte Biological Index IBMR for Greek rivers (IBMRGR) was calculated for all the sites and the boundaries for the five quality classes were derived according to the methodology proposed by the Mediterranean Geographic Intercalibration Group (MedGIG). The main findings showed that the hydromorphological modifications were the main environmental stressors that correlated strongly with the IBMRGR, whereas physicochemical stressors were of lesser importance. More specifically, the first principal component explained 51% of the total variance of the data, representing a moderately strong gradient of hydromorphological stress, whereas the second component explained 22.5%, representing a weaker gradient of physicochemical stress. In addition, the ecological assessment showed that almost 60% of the sites failed the WFD target of the “Good” ecological quality class, which agrees with classification assessments based on other BQEs for Greece and many Mediterranean countries. Overall, this work provides a first assessment of the ecological classification of Greek rivers with the BQE of aquatic macrophytes with significant implications for ecological monitoring and decision making within the frame of the WFD implementation.

APA, Harvard, Vancouver, ISO, and other styles

32

Urbanič, Gorazd, Zlatko Mihaljević, Vesna Petkovska, and Maja Pavlin Urbanič. "Back to Ecology: Reference Conditions as a Basis for Assessment, Restoration and Sustainable Management of Large Rivers." Water 13, no. 18 (September 20, 2021): 2596. http://dx.doi.org/10.3390/w13182596.

Full text

Abstract:

Under the EU Water Framework Directive, ecological assessment and management are based on type-specific reference conditions. In the EU it may be difficult to find sites in large rivers with at least near-natural conditions, though this is not the case in southeast Europe, where stretches of large rivers still exist with at least near-natural conditions, meaning that there is little or no disturbance from hydromorphological alteration, water quality, land use in the catchment and alien species. We examined benthic invertebrate assemblages in 45 samples collected from near-natural sites of several large rivers: Sava, Drava, Mura, Kupa and Una. The near-natural benthic invertebrate assemblages of large rivers contained several rare or remarkable species, especially among stoneflies, e.g., Marthamea vitripennis, Xanthoperla apicalis. We compared benthic invertebrate communities in river sections with fine and coarse substrates and in three eco-hydromorphological (ECO-HM) types of large rivers, reflecting habitat heterogeneity: lowland-deep, lowland-braided and intermountain. Multivariate analysis of variance (PERMANOVA) was used to statistically evaluate similarities among assemblages. It was found that the composition of benthic invertebrate assemblages varied by both ECO-HM types and substrate category. Similarity percentage (SIMPER) analysis showed that the average dissimilarity of benthic invertebrate assemblages was high between all ECO-HM type pairs and between fine and coarse substrate. We found that habitat heterogeneity and substrate independently influenced benthic invertebrate assemblages. To achieve ecological goals in the management of large rivers, in addition to functionality, a holistic view with at least near-natural assemblages, including the names of the taxa present, should also be considered.

APA, Harvard, Vancouver, ISO, and other styles

33

Petriki, Olga, Dimitrios Zervas, Charalampos Doulgeris, and Dimitra Bobori. "Assessing the Ecological Water Level: The Case of Four Mediterranean Lakes." Water 12, no. 11 (October 23, 2020): 2977. http://dx.doi.org/10.3390/w12112977.

Full text

Abstract:

The ecological water regime in lake water bodies refers to the water levels that enable the fulfillment of the ecosystem’s multiple functions. Therefore, assessing the ecological water regime necessitates the consideration of hydrological, economic, social, and ecological factors. The present research is focused on the assessment of the ecological water level of four Mediterranean natural lake ecosystems, considering their morphological and biological features. Initially, suggestions on the ecological water regime of the studied lakes were made based on an analysis of the lakes’ morphometry. Further, the ecological and biological requirements of the present fish fauna and aquatic macrophytic vegetation were considered. For the latter, mapping was conducted by extensive sampling according to international standards, in order to assess macrophyte composition, abundance, and chorology, as well as species sensitivity to water level fluctuations. The above guided the proposals on the optimal water level regime that should be met by each lake regarding the macrophytic and fish communities’ sustainability, also taking into account the unique hydromorphological features of each lake. The differences in the outcoming results revealed that hydromorphological and biological approaches should be combined for assessing lakes’ ecological water regimes.

APA, Harvard, Vancouver, ISO, and other styles

34

Atanacković, Ana, Ferdinand Šporka, Vanja Marković, Jaroslav Slobodnik, Katarina Zorić, Bela Csányi, and Momir Paunović. "Aquatic Worm Assemblages along the Danube: A Homogenization Warning." Water 12, no. 9 (September 18, 2020): 2612. http://dx.doi.org/10.3390/w12092612.

Full text

Abstract:

In this study, we analyzed the impacts of different environmental conditions on aquatic worm communities along the Danube River, based on two longitudinal surveys, the Joint Danube Surveys 2 and 3 (JDS; 2007 and 2013). We identified the most important environmental factors (among analyzed groups) that shape worm communities: hydromorphlogical alterations, flow velocity and substrate (HYMO group), dissolved oxygen, nitrates and nitrites (physico-chemical parameters), zinc and nickel (metals), monobutyltin cation, benzo(b) fluoranthene and benzo(k)fluoranthene, polychlorinated biphenyls PCB 77 and PCB 118 (selected chemical determinants—organotin compounds, Polycyclic aromatic hydrocarbons—PAHs and PCBs). A homogenization of species composition of Oligochaeta assemblages along the Danube was confirmed. As one of main factors related to biotic homogenization, hydromorphological alterations represented by similar changes in flow velocity and substrates along Danube’s course could be singled out. Our results indicate that Oligochaeta could be used for the identification of the level of hydromorphological degradation in large rivers (homogenization), rather than for stressors classified as nutrient and organic pollutants. Our results provide additional evidence in risk assessment of the environment, contributing in water management and monitoring of the ecological status as proposed by the Water Framework Directive.

APA, Harvard, Vancouver, ISO, and other styles

35

Nawieśniak-Caesar, Maria, Magdalena Wilkosz-Mamcarczyk, Józef Hernik, Julia Gorzelany, and Magdalena Gorzelany-Dziadkowiec. "AN INTEGRATED APPROACH TO RIVER VALLEY REVITALISATION." Journal of Environmental Engineering and Landscape Management 27, no. 1 (March 15, 2019): 22–32. http://dx.doi.org/10.3846/jeelm.2019.7481.

Full text

Abstract:

Rivers have always been a unique space in urban landscapes. Regrettably, the river-town relationship was disturbed in the 19th and at the beginning of the 20th century as industrial plants and districts were established at banks, which changed the urban structure. This resulted in degradation of riverscapes among other things. Today, attempts are made to revitalise the areas and use them for ecological, recreational, and other purposes. The paper presents an integrated approach to river valley revitalisation – demonstrated on the Skawinka river, flowing through Skawina, an industrial town in Poland. An integrated approach could indicate local development possibilities of river valley and thereby strengthen the competitiveness of the area. The study employed the Landscape and Hydromorphological Assessment of River Valleys Method, focusing on hydromorphological, landscape, and integrated factors. Proposing an integrated approach to the Skawinka river valley revitalisation presents a procedure that indicates possibilities for local development and thereby strengthening the competitiveness of this region. The guidelines for the revitalisation project for this river indicate that if the river was made generally accessible, it may become an important location for social and economic life. At the same time it might have a recreational and educational function.

APA, Harvard, Vancouver, ISO, and other styles

36

Choi, Gye-Woon, Hyea-Ju Kim, Jong-Sik Park, and Man-Shin Han. "Hydromorphological Structure Assessment of Urban Streams after Close-to-Nature Stream Restoration Using LAWA." Journal of Korea Water Resources Association 43, no. 5 (May 31, 2010): 421–31. http://dx.doi.org/10.3741/jkwra.2010.43.5.421.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

González del Tánago, Marta, Vanesa Martínez-Fernández, Francisca C. Aguiar, Walter Bertoldi, Simon Dufour, Diego García de Jalón, Virginia Garófano-Gómez, Dejan Mandzukovski, and Patricia María Rodríguez-González. "Improving river hydromorphological assessment through better integration of riparian vegetation: Scientific evidence and guidelines." Journal of Environmental Management 292 (August 2021): 112730. http://dx.doi.org/10.1016/j.jenvman.2021.112730.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Jēkabsone, J., and L. Uzule. "Assessment of the hydromorphological quality of streams in the Venta River Basin District, Latvia." Estonian Journal of Ecology 63, no. 4 (2014): 205. http://dx.doi.org/10.3176/eco.2014.4.01.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Radulovic, Snezana, Dusanka Laketic, Z. Popovic, and Ivana Teodorovic. "Towards candidature of the Crno jezero (Black Lake) (Durmitor, Montenegro) as a high ecological status (HES) site of the Dinaric Western Balkan ecoregion." Archives of Biological Sciences 62, no. 4 (2010): 1101–17. http://dx.doi.org/10.2298/abs1004101r.

Full text

Abstract:

The aim of this study was to assess whether the Crno jezero (Black Lake) could be designated as a site possessing specific reference conditions of a glacial lake in the Dinaric Western Balkan ecoregion. The results of a Lake Habitat Survey (LHS), analysis of macrophytes and a basic water quality assessment indicate that the lake is in a near pristine state, particularly with regard to its hydromorphological status, and that it fulfills the requirements of High Ecological Status (HES), as set by the Water Framework Directive. However, to confirm these preliminary findings, an integrated assessment of the ecological and chemical status, using other biological quality elements and a full set of physico-chemical parameters, is necessary.

APA, Harvard, Vancouver, ISO, and other styles

40

Ferreira, João, João Pádua, Samantha Jane Hughes, Rui M. Cortes, Simone Varandas, Nigel Holmes, and Paul Raven. "Adapting and adopting River Habitat Survey: Problems and solutions for fluvial hydromorphological assessment in Portugal." Limnetica 30, no. 2 (December 15, 2011): 263–72. http://dx.doi.org/10.23818/limn.30.20.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Rinaldi, Massimo, Rafael Baena-Escudero, Laura Nardi, Inmaculada C. Guerrero-Amador, and Belén García-Martínez. "An assessment of the hydromorphological conditions of the middle and lower Guadalquivir River (southern Spain)." Physical Geography 41, no. 3 (August 23, 2019): 254–71. http://dx.doi.org/10.1080/02723646.2019.1653668.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Nowicka, Barbara, Marta Bałandin, and Anna Nadolna. "Sensitivity of a large flow-through lake to meteorological condition and anthropogenic stress (hydromorphological assessment)." Geographia Polonica 90, no. 4 (2017): 401–15. http://dx.doi.org/10.7163/gpol.0108.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Právetz, Tamás, György Sipos, and Zsuzsanna Ladányi. "Assessment of possible uncertainties arising during the hydromorphological monitoring of a Sand-Bedded Large River." Journal of Environmental Geography 10, no. 3-4 (November 1, 2017): 27–33. http://dx.doi.org/10.1515/jengeo-2017-0010.

Full text

Abstract:

Abstract The riverbed morphology of sand-bedded rivers is dynamically changing as a consequence of quasi continuous bedload transport. In the meantime, the dimension, size and dynamics of developing bedforms is highly depending on the regime of the river and sediment availability, both affected by natural and anthropogenic factors. Consequently, the assessment of morphological changes as well as the monitoring of riverbed balance is challenging in such a variable environment. In relation with a general research on the longer term sediment regime of River Maros, a fairly large alluvial river in the Carpathian Basin, the primary aim of the present investigation was to assess uncertainties related to morphological monitoring, i.e. testing the reproducibility of hydromorphological surveys and digital elevation model generation by performing repeated measurements among low water conditions on selected representative sites. Surveys were conducted with the combination of an ADCP sonar, GPS and total station. The most appropriate way of digital elevation modelling (DEM) was tested and 30-point Kriging was identified to be optimal for comparative analysis. Based on the results, several uncertainties may affect the reproducibility of measurements and the volumetric deviation of DEM pairs generated. The mean horizontal difference of survey tracks was 3-4 m in case of each site, however this could not explain all the DEM deviation. Significant riverbed change between measurements could also be excluded as the main factor. Finally, it was found that results might be affected greatly by systematic errors arising during motor boat ADCP measurements. Nevertheless, the observed, normalised and aggregated DEM uncertainty (600-360 m3/rkm) is significantly lower than the changes experienced between surveys with a month or longer time lag. Consequently, the developed measurement strategy is adequate to monitor long term morphological and sediment balance change on sand bedded large river.

APA, Harvard, Vancouver, ISO, and other styles

44

Trifautan, Viorica, Olga Cataraga, and Viorica Coada. "The main sources of pollution of Valea Morilor lake which caused the asphygation of fish." Acta et commentationes: Ştiinţe Exacte şi ale Naturii 13, no. 1 (November 2022): 82–99. http://dx.doi.org/10.36120/2587-3644.v13i1.82-99.

Full text

Abstract:

The paper illustrates the role of bioindicators applied to identify the sources and degree of pollution of a water basin. The laboratory test reports, standard methodologies and scientific literature considered as an auxiliary tool for the preparation and planning the sampling campaigns for the assessment of the ecological status of the aquatic environment (including sampling, analysis and microscopy) served as support. There were applied the results of the laboratory analyses from the reports on quality indices and technical report, which include qualitative elements of the general physicochemical conditions, hydromorphological and biological qualitative components from Valea Morilor lake.

APA, Harvard, Vancouver, ISO, and other styles

45

Yushchenko, Yurii, Mykola Pasichnyk, Mykola Bilokon, Andrii Nykolaiev, and Oksana Mykytchyn. "Studies of the current state of anthropogenic transformation of the young river landscape of the Prut river (within Chernivtsi region)." Scientific Herald of Chernivtsi University. Geography, no. 824 (January 30, 2020): 55–63. http://dx.doi.org/10.31861/geo.2020.824.55-63.

Full text

Abstract:

For a long time, the problem of deterioration of the bed and floodplain (young river landscape) of the Prut River has attracted attention in practical, environmental and scientific terms. This applies to all components of the landscape, ecosystems. But the central, main problem is hydromorphological transformation, associated primarily with the extraction of river alluvium. In recent decades the relevant research has been conducted.At the same time, negative processes continue to develop and require appropriate development of monitoring, database formation, understanding of the causes and patterns. In particular, the database should necessarily include data on the territorial structure of the river valley, the young river landscape. Thus, there is an urgent task to identify and assess the current state of the young river landscape of the Prut and systematize data on the patterns of processes of its hydromorphological transformation. The purpose of the study is to systematize information on the main processes of anthropogenic impact and the corresponding processes of transformation of the hydromorphological basis of the young river landscape of the Prut within Chernivtsi region to identify their patterns, consequences and assess and, on this basis, their current state. The object of research is the young river landscape of the Prut (within the Chernivtsi region), which develops on the basis of the riverbed and floodplain. The subject of research - manifestations, patterns of consequences of anthropogenic transformation of the hydromorphological basis of the young landscape of the Prut River. Methods, research procedure - hydromorphological analysis of the territorial structure of the river valley with the formation of a database of territorial landscape features in the form of homogeneous areas; systematic analysis of factors of anthropogenic transformation of the young river landscape; analysis of changes in the morphology of the riverbed and floodplain using GIS and GPS technologies. The state of research in the context of the research. A number of scientific works had been devoted to the study of anthropogenic changes in the bed and floodplain of the Prut River. In particular, regarding changes in morphology, these are the works of Yu. Yushchenko, A. Kyrylyuk, M. Pasichnyk, M. Nastyuk [3,4,7,9,11]. An important issue of the study is to identify the territorial structure of the river hydromorphological landscape.This is one of the important tasks of riverbed science [10] and landscape studies. Relevant studies are conducted in relation to rivers and river valleys of the Uppon Prut system [5, 9, 11,12]. Conclusions.Threats from catastrophic floods are an important factor in shaping the relations between society and the Carpathian rivers. Flood protection programs have long been developed. An important element are the embankment dams. Currently, most dams perform their function quite well. Last but not least, this is due to the entrenchment of riverbed. But this positive has a "bitter taste". In addition, an objective assessment of the effectiveness of flood protection and shore protection requires a thorough study of their entire history, which is the subject of a significant separate study. The risk factor for floods has influenced not only the objective formation of the system of protection by society, but also the "not very correct" use of the concepts of "harmful effects of water" and the regulation of riverbeds. It is known that due to the entrenchment of riverbeds, engineering structures in their channels are destroyed. But the entrenchment of riverbeds, as we found out, is anthropogenically caused. What is the "harmful effect of water"? Processes in society are probably harmful… The main factor in the anthropogenic transformation of the hydromorphological basis of the young landscape of the Prut River was the selection of alluvium from the riverbed. This led to a significant entrenchment of the river, especially in places of picking of river sediments (over 4 meters), and an increase in the relative height of floodplains with a corresponding transformation of their hydrological regime and other consequences. When the river entrenchment happened, the riverbed and the flow move to a lower hypsometric level and the objective laws of the flow-channel system begin to appear on it. These are the laws of formation and development of certain forms, the laws of hydromorphology. This includes the development of so-called intra-riverbed forms, and the development of riverbed forms (branches, meanders). It can also lead to conflicts with human interests: erosion of shores, coastal areas, buildings, etc. In such conditions, protective control work is really needed. But they can and should be carried out without the selection of river alluvium, which is not always in the case. By selecting alluvium again, we are only exacerbating the problem. Thus, it would seem that fair ideas of protection against dangerous phenomena and regulation of the flow-channel system are actually used incorrectly and lead to a worsening of the situation. A dangerous anthropogenic geomorphological process is developing. According to all methods of assessing the state of the hydromorphological basis of the landscape for the Prut River, estimates of "very bad" or "pre-crisis state" were obtained.

APA, Harvard, Vancouver, ISO, and other styles

46

Bedla, Dawid, Wiktor Halecki, and Karol Król. "HYDROMORPHOLOGICAL METHOD AND GIS TOOLS WITH A WEB APPLICATION TO ASSESS A SEMI-NATURAL URBANISED RIVER." Journal of Environmental Engineering and Landscape Management 29, no. 1 (February 17, 2021): 21–32. http://dx.doi.org/10.3846/jeelm.2021.14187.

Full text

Abstract:

River valleys are an essential element of urban space, and play an important role in the functioning of the natural environment and the recreation of city dwellers. Moreover, blue-green infrastructure facilitates healthy urban living. New technologies can contribute significantly to dissemination of messages of environmental protection. We discuss adaptation of the RHS method for presenting interactive data for river channels. Our assessment was focused on three parameters: habitat area, structure and conservation. The main parameters were described using selected indicators linked to natural and anthropogenic factors. The habitat modification score showed that the physical state of the Drwinka River was obviously modified, and the habitat quality assessment rated the stream as hydromorphological class III. The web application showed that the proposed method is suitable for creating realistic visual effects, and indicates greening areas against degraded areas.

APA, Harvard, Vancouver, ISO, and other styles

47

Ilanloo, Maryam, and Amir Karam. "Assessment of hydromorphological conditions of the river using the MQI method (Case study area: JAJROOD River)." Journal of Applied researches in Geographical Sciences 20, no. 56 (March 1, 2020): 35–53. http://dx.doi.org/10.29252/jgs.20.56.35.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Orlando-Bonaca, Martina, Borut Mavrič, and Gorazd Urbanič. "Development of a new index for the assessment of hydromorphological alterations of the Mediterranean rocky shore." Ecological Indicators 12, no. 1 (January 2012): 26–36. http://dx.doi.org/10.1016/j.ecolind.2011.05.010.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Zaharia, Liliana, Gabriela Ioana-Toroimac, Gabriela-Adina Moroşanu, Andreea-Cristina Gălie, Marinela Moldoveanu, Ivan Čanjevac, Philippe Belleudy, et al. "Review of national methodologies for rivers' hydromorphological assessment: A comparative approach in France, Romania, and Croatia." Journal of Environmental Management 217 (July 2018): 735–46. http://dx.doi.org/10.1016/j.jenvman.2018.04.017.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Rinaldi, M., N. Surian, F. Comiti, and M. Bussettini. "A methodological framework for hydromorphological assessment, analysis and monitoring (IDRAIM) aimed at promoting integrated river management." Geomorphology 251 (December 2015): 122–36. http://dx.doi.org/10.1016/j.geomorph.2015.05.010.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Hydromorphological assessment'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles