scholarly journals Decision Support Tools for River Restoration: The Implementation of the “River Habitat Survey” Methodology on the River Selho (Guimarães Municipality, Northwest Portugal)

Hydrology ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 69
Author(s):  
Francisco Costa ◽  
António Vieira
Keyword(s):  
River Restoration ◽  
Survey Methodology ◽  
Riparian Zone ◽  
Point Of View ◽  
River Habitat ◽  
Support Tools ◽  
River Habitat Survey ◽  
Physical Features ◽  
Hydromorphological Quality

The river habitat survey (RHS) system is a method used to assess the physical features and quality of rivers, which was developed to assist in the conservation and recovery of riverside habitats. The RHS takes into account the need to characterize areas of intervention from a hydromorphological point of view, in order to introduce corrective measures aimed at restoring degraded sections and habitats, and increasing local biodiversity. In this paper, we present the results obtained from the application of the RHS methodology to the River Selho, in the municipality of Guimarães (Portugal). The transects that we defined were strongly influenced by anthropic actions that have modified the riverside habitats, the artificialization of the river channel, and the urban occupation of the banks. Taking into account the results, we can point out the main problems that currently affect the hydromorphological quality of the transects analyzed in the River Selho, as well as identify the originating factors: the excessive silting of the watercourse; morphometric changes, with an emphasis on the narrowing and modification of the channel and the banks; as well as the massive destruction of the riparian zone. This study shows that the application of the RHS methodology is a useful tool for the management of degraded riverside areas.

scholarly journals Improvement in physical river habitat quality in response to river restoration measures

Geografie ◽  
2016 ◽  
Vol 121 (1) ◽  
pp. 54-78
Author(s):  
Kateřina Kujanová ◽  
Milada Matoušková
Keyword(s):  
Habitat Quality ◽  
River Restoration ◽  
Field Survey ◽  
Reference Conditions ◽  
Ecological Status ◽  
River Habitat ◽  
Restoration Measures ◽  
Hydromorphological Quality

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.

scholarly journals Antropogeniczne przekształcenie rzek na Ponidziu Pińczowskim

2021 ◽  
Vol 66 (3) ◽  
pp. 63-72
Author(s):  
Jarosław Suchożebrski
Keyword(s):  
Habitat Modification ◽  
River Channels ◽  
School Students ◽  
River Habitat ◽  
Synthetic Indicator ◽  
River Habitat Survey ◽  
British Research

One of the three basic components of assessing ecological state is the determination of hydromorphological conditions occurring in river channels and valleys. In this paper an effort has been taken to check usefulness for such evaluations River Habitat Survey (RHS) – British research method, which is used in Poland for classification of ecological quality of surface waters from the view-point of their actual hydromorphological state. The possibilities of using this method in field teaching of geography students were checked. For this purpose, the RHS method was modified and adapted to the needs of field exercises. Research was conducted in Nida Riverside region, near Pińczów (świętokrzyskie voivodeship, Poland). Collected material makes it possible to calculate synthetic indicator HMS (Habitat Modification Score) which allow the hydromorphological state of a river to be presented in numerical form and assessing river modification by human activities. The research released advantages of the RHS in field teaching of students. The method can also be used in field exercises with secondary school students.

scholarly journals Mobile RHS: A Mobile Application to Support the “River Habitat Survey” Methodology

2015 ◽  
Vol 64 ◽  
pp. 87-94 ◽  
Author(s):  
António Cunha ◽  
Pedro Gonçalves ◽  
João Barreira ◽  
António Trigo ◽  
Samantha Jane Hughes
Keyword(s):  
Mobile Application ◽  
Survey Methodology ◽  
River Habitat ◽  
River Habitat Survey

scholarly journals Hydromorphological and physicochemical conditions of the Parsęta River

2018 ◽  
Vol 15 (1) ◽  
pp. 53-62
Author(s):  
Józef Szpikowski ◽  
Grażyna Szpikowska
Keyword(s):  
Good Condition ◽  
River Valley ◽  
Survey Method ◽  
Anthropogenic Pressure ◽  
River Habitat ◽  
Quality Of Waters ◽  
The Individual ◽  
River Habitat Survey ◽  
High Degree

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.

scholarly journals Using the River Habitat Survey method in forecasting effects of river restoration

2014 ◽  
Vol 46 (2) ◽  
pp. 125-138 ◽  
Author(s):  
Marta Kiraga ◽  
Zbigniew Popek
Keyword(s):  
River Restoration ◽  
Evaluation Method ◽  
Ecological Status ◽  
Main Tool ◽  
Survey Method ◽  
Class Iii ◽  
Regulated Rivers ◽  
River Habitat ◽  
Before And After ◽  
River Habitat Survey

Abstract Using the River Habitat Survey method in forecasting effects of river restoration. Research presents usability of the River Habitat Survey (RHS) evaluation method in forecasting effects of the Zielawa River restoration, performed in selected section between 18 + 960 km and 19 + 460 km. The EU so-called Water Framework Directive signalizes necessity of achieving a good ecological status of European rivers in the immediate future. Accordingly, river restoration is the main tool for already technically regulated rivers’ quality upgrading. Present research contains a collation of four proposed restoration works variants and the ecological evaluation of chosen river reach before and after initiating restoration works in accordance to various variants, using the RHS method. The conclusion is fact, that in dependence of established variant it is possible to receive improvement of ecological class from present Class V to Class IV (variants 1 and 2) or Class III (variants 3 and 4)

scholarly journals THE APPLICATION OF THE RIVER HABITAT SURVEY METHOD TO THE ASSESSMENT OF THE QUALITY OF THE RIVER WARDYNKA (NORTH-WESTERN POLAND)

2013 ◽  
Vol 35 ◽  
pp. 85-94
Author(s):  
Damian Spieczyński ◽  
Małgorzata Raczyńska ◽  
Anna Grzeszczyk-Kowalska ◽  
Mariusz Raczyński ◽  
Małgorzata Zimnicka-Pluskota
Keyword(s):  
Survey Method ◽  
River Habitat ◽  
River Habitat Survey ◽  
North Western

COMBINATORIAL POLYNOMIALLY COMPUTABLE CHARACTERISTICS OF SUBSTITUTIONS AND THEIR PROPERTIES

2020 ◽  
Vol 7 (2) ◽  
pp. 34-41
Author(s):  
VLADIMIR NIKONOV ◽  
◽  
ANTON ZOBOV ◽  
Keyword(s):  
Mathematical Expectation ◽  
Point Of View ◽  
Small Range ◽  
Computational Point ◽  
Wide Range ◽  
Bijective Function ◽  
The Difference ◽  
Element Base ◽  
Selection Of

The construction and selection of a suitable bijective function, that is, substitution, is now becoming an important applied task, particularly for building block encryption systems. Many articles have suggested using different approaches to determining the quality of substitution, but most of them are highly computationally complex. The solution of this problem will significantly expand the range of methods for constructing and analyzing scheme in information protection systems. The purpose of research is to find easily measurable characteristics of substitutions, allowing to evaluate their quality, and also measures of the proximity of a particular substitutions to a random one, or its distance from it. For this purpose, several characteristics were proposed in this work: difference and polynomial, and their mathematical expectation was found, as well as variance for the difference characteristic. This allows us to make a conclusion about its quality by comparing the result of calculating the characteristic for a particular substitution with the calculated mathematical expectation. From a computational point of view, the thesises of the article are of exceptional interest due to the simplicity of the algorithm for quantifying the quality of bijective function substitutions. By its nature, the operation of calculating the difference characteristic carries out a simple summation of integer terms in a fixed and small range. Such an operation, both in the modern and in the prospective element base, is embedded in the logic of a wide range of functional elements, especially when implementing computational actions in the optical range, or on other carriers related to the field of nanotechnology.

Physical capital stock, technological upgrading and modernisation in Hungary

2005 ◽  
Vol 55 (2) ◽  
pp. 201-221 ◽  
Author(s):  
Andrea Szalavetz
Keyword(s):  
Capital Accumulation ◽  
Physical Capital ◽  
Developed Countries ◽  
Point Of View ◽  
Technology Generation ◽  
Development Policies ◽  
Specific Factors ◽  
Physical Capital Accumulation

This paper discusses the relation between the quality and quantity indicators of physical capital and modernisation. While international academic literature emphasises the role of intangible factors enabling technology generation and absorption rather than that of physical capital accumulation, this paper argues that the quantity and quality of physical capital are important modernisation factors, particularly in the case of small, undercapitalised countries that recently integrated into the world economy. The paper shows that in Hungary, as opposed to developed countries, the technological upgrading of capital assets was not necessarily accompanied by the upgrading of human capital i.e. the thesis of capital skill complementarity did not apply to the first decade of transformation and capital accumulation in Hungary. Finally, the paper shows that there are large differences between the average technological levels of individual industries. The dualism of the Hungarian economy, which is also manifest in terms of differences in the size of individual industries' technological gaps, is a disadvantage from the point of view of competitiveness. The increasing differences in the size of the technological gaps can be explained not only with industry-specific factors, but also with the weakness of technology and regional development policies, as well as with institutional deficiencies.

Flouride and Nitrate Status of Some Ground Waters in Chittor District of Rajasthan State (India)

2018 ◽  
Vol 6 (9) ◽  
pp. 119
Author(s):  
Trapti Sharma ◽  
R. P. Nagar ◽  
R. C. Gaur ◽  
Pooja Gupta ◽  
Charanjit Kaur
Keyword(s):  
Point Of View ◽  
World Health ◽  
Indian Council ◽  
Standard Methods ◽  
Ground Waters ◽  
Drinking Waters ◽  
Health Organization ◽  
Research World ◽  
Drinking Purpose

In Rajasthan state the ground waters of some areas like Ramganj-mandi, Morak, Barmer, Jaisalmer, Chittor and Udaipur etc. are susceptible from drinking point of view.To test the quality of groundwater in Chittor district 14, ground water samples were collected from various places and analyzed for pH, E.C., Fluoride and Nitrate parameters by standard methods (A.P.H. A., Washington, USA, 1995). The study revealed that none of the ground waters was found suitable completely from drinking point of view. Some are having electrical conductivity > 1.4 dS/m, some are having pH >8.5, some area having fluoride >1.5 ppm and some are having nitrate>45 ppm. These are the limits of various parameters permitted by various International authorities like Bureau of Indian Standard, Indian Council of Medical Research,world health Organization etc. for drinking waters. So, it is recommended to the residents of above areas to use water for drinking purpose only after reverse osmosis or adopting suitable method of removing excess of Fluoride and Nitrate for drinking water to avoid unwanted pathogenic diseases harmful for human health.

A Futures Study on the Quality Of Life from the Point Of View of Iranian Youth

2017 ◽  
Vol 14 (2) ◽  
pp. 1
Author(s):  
Sina Saeedy ◽  
Mojtaba Amiri ◽  
Mohammad Mahdi Zolfagharzadeh ◽  
Mohammad Rahim Eyvazi
Keyword(s):  
Quality Of Life ◽  
Life Satisfaction ◽  
Mixed Model ◽  
Satisfaction With Life ◽  
Point Of View ◽  
Human Society ◽  
Futures Studies ◽  
The Social ◽  
The University

Quality of life and satisfaction with life as tightly interconnected concepts have become of much importance in the urbanism era. No doubt, it is one of the most important goals of every human society to enhance a citizen’s quality of life and to increase their satisfaction with life. However, there are many signs which demonstrate the low level of life satisfaction of Iranian citizens especially among the youth. Thus, considering the temporal concept of life satisfaction, this research aims to make a futures study in this field. Therefore, using a mixed model and employing research methods from futures studies, life satisfaction among the students of the University of Tehran were measured and their views on this subject investigated. Both quantitative and qualitative data were analysed together in order to test the hypotheses and to address the research questions on the youth discontentment with quality of life. Findings showed that the level of life satisfaction among students is relatively low and their image of the future is not positive and not optimistic. These views were elicited and discussed in the social, economic, political, environmental and technological perspectives. Keywords:  futures studies, quality of life, satisfaction with life, youth

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