scholarly journals The Use of Biological Indices for the Assessment of the River Quality (Ruda River, Poland)

2017 ◽  
Vol 24 (2) ◽  
pp. 285-298 ◽  
Author(s):  
Aneta Spyra ◽  
Justyna Kubicka ◽  
Małgorzata Strzelec
Keyword(s):  
Water Quality ◽  
Benthic Invertebrates ◽  
Ecological Status ◽  
Field Studies ◽  
Human Pressure ◽  
Dam Reservoir ◽  
River Quality ◽  
Water Field ◽  
Study Sites

AbstractRecognition of the deteriorating conditions of rivers worldwide has called for increased efforts to improve the ecological quality of impacted river systems. This is particularly important in areas that have suffered from a significant impact of human pressure on the ecological status of water. Field studies were conducted in the Ruda River in an area that had undergone anthropogenic disturbances. The objectives of our survey were to test the biological metrics based on benthic macroinvertebrates at four study sites. Spring and autumn surveys of benthic invertebrates indicated that based on the BMWP and BMWP(PL) indices, water quality was higher in comparison with the value of Multimetric index at all of the sites that were studied. Our results revealed that the water quality was higher at the study sites that are located above the dam reservoir based on both the chemical and biological parameters. This study also indicated that both spring and autumn constitute appropriate periods for carrying out monitoring studies. The values of multimeric index indicated the same water quality (except for site 1) in both sampling periods. Anthropogenic transformations of a riverbed influence the flora and fauna and affect the ecological status of rivers.

Long-term changes in water quality and ecological status of lakes in the Wielkopolska National Park and its buffer zone with special reference to effectiveness of the lakes’ protection

2016 ◽  
Vol 45 (4) ◽  
Author(s):  
Agnieszka E. Ławniczak
Keyword(s):  
Water Quality ◽  
Catchment Area ◽  
National Park ◽  
Ecological Status ◽  
Buffer Zone ◽  
Field Studies ◽  
Long Term Changes ◽  
Protection Strategies

AbstractThis paper evaluates water quality and ecological status of lakes located in the Wielkopolska National Park and its buffer zone. Changes in water quality were analyzed from 1974 to 2012 in order to assess the effectiveness of the protection strategies implemented on the studied lakes since 1957, i.e. the date when the park was established. The ecological status of the lakes was assessed with the use of macrophytes as well as hydromorphological and physicochemical analyses performed in 2012. Changes in water quality of the studied lakes within the last 40 years were analyzed based on available published and unpublished data, as well as field studies. All water bodies are characterized by advanced eutrophication. However, evaluation of the ecological status showed good status of the charophyte-dominated lakes, i.e. Lake Wielkowiejskie and Lake Budzyńskie. Lack of significant differences in physicochemical water qualities between the park and its buffer zone indicated that measures implemented to protect the water, particularly in the park, are ineffective. This study shows that more radical conservation measures are necessary to protect and improve the water quality, not only in WPN and its buffer zone but also in the whole catchment area.

Freshwater nematodes as bioindicators in field studies - the NemaSPEAR[%]-index.

2021 ◽  
pp. 323-340
Author(s):  
Sebastian Höss ◽  
Walter Traunspurger
Keyword(s):  
Ecological Status ◽  
Nematode Species ◽  
Field Studies ◽  
Freshwater Ecosystems ◽  
Freshwater Nematodes ◽  
Chemically Induced ◽  
Freshwater Habitats ◽  
Induced Changes ◽  
Quality Assessments

Abstract This chapter, after a general introduction to quality assessments of freshwater habitats, reviews the use of freshwater nematodes as in situ bioindicators, including in monitoring the ecological quality of freshwater habitats. By drawing on studies of nematode communities in unpolluted and polluted habitats as examples, it highlights both the different methods used to assess the quality of freshwater ecosystems and their applications. A focus of the chapter is the development of a new index that uses freshwater nematodes to assess chemically induced changes in the ecological status of freshwater habitats, the NemaSPEAR[%]-index (Nematode SPEcies At Risk).

scholarly journals Continuous and Periodic Monitoring System of Surface Water Quality of an Impounding Reservoir: Sulejow Reservoir, Poland

2019 ◽  
Vol 16 (3) ◽  
pp. 301
Author(s):  
Aleksandra Ziemińska-Stolarska ◽  
Mirosław Imbierowicz ◽  
Marcin Jaskulski ◽  
Aleksander Szmidt ◽  
Ireneusz Zbiciński
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Monitoring System ◽  
Online Monitoring ◽  
Surface Water Quality ◽  
Dam Reservoir ◽  
Reservoir Water ◽  
Periodic Monitoring

Keywords: online monitoring; dam reservoir; water quality; multi-parameter probe; eutrophication

Distillate water quality of a single-basin solar still: laboratory and field studies

Solar Energy ◽  
2004 ◽  
Vol 76 (5) ◽  
pp. 635-645 ◽  
Author(s):  
A Hanson ◽  
W Zachritz ◽  
K Stevens ◽  
L Mimbela ◽  
R Polka ◽  
...  
Keyword(s):  
Water Quality ◽  
Field Studies ◽  
Solar Still

scholarly journals Environmental assessment of water quality in various lakes of the Volyn region, which is intensively used in recreation

2020 ◽  
Keyword(s):  
Water Quality ◽  
Environmental Assessment ◽  
Ecological Status ◽  
Ecological Assessment ◽  
Limiting Factors ◽  
Practical Significance ◽  
High Quality ◽  
Ecological Index ◽  
Quality Of Water

Introduction. Assessment of the ecological status of lakes is important for their conservation and protection. Many lakes are intensively used in recreation in Volyn Region. The development of the resort and recreational facilities requires significant additional volumes of fresh water to maintain the depth of the reservoirs in the bathing area, certain sanitary and temperature regimes of the reservoirs. The limiting factors are the sanitary and hygienic indicators of water. First and foremost, high quality of water should be provided for the organization of contact types of recreation (bathing, diving, water skiing, etc.). The purpose of article. The purpose of the article is ecological assessment of water quality in various lakes of Volyn Region, which are most intensively used in recreation. Methods. Research methods are expeditionary, methods of mathematical statistics and environmental assessment of water quality, which were carried out in accordance with the methodology for assessing the quality of surface water in the respective categories. During the preparation of the article, materials from their own expeditionary studies of the natural-economic state of the lakes were used, as well as the results of chemical analysis of the water composition conducted by the Water and Soil Monitoring Laboratory of the Regional Water Resources Office in Volyn Region and the Complex Laboratory for Observation of the Environmental Environmental Center. Results. The analysis of the qualitative indicators of the lakes Svitiaz, Velyke Zgoranske and Somyn showed the high quality of water in the lakes. For the period of 2015–2019, water quality was classified as „good” class II, by degree of cleanliness „clean”, by category as „very good”, by degree of cleanliness „clean” on all lakes. The value of IE for the Lake Velyke Zgoranske varied in the range of 1.81–2.44, in the range of 1.66–2.07 for the Lake Svitiaz, and in the range of 2.56–2.96 for the Lake Somyn. Index І2 (ecological and sanitary indicators) has the most influence on the magnitude of the ecological index of water quality. The scientific novelty lies in establishing block and integral indexes of ecological assessment of water quality, classes and categories of water quality of the most recreationally-developed lakes of Volyn Region, as well as in assessment of the dynamics of indicators of water quality of lakes during the years of 2015–19. Practical significance is defined with the opportunity of development of a set of measures for the rational use and protection of lakes.

scholarly journals Diatom diversity and water quality of a suburban stream: a case study of the Rzeszów city in SE Poland

2016 ◽  
Vol 41 (1) ◽  
pp. 19-34 ◽  
Author(s):  
Teresa Noga ◽  
Jadwiga Stanek-Tarkowska ◽  
Urszula Kloc ◽  
Natalia Kochman-Kędziora ◽  
Mateusz Rybak ◽  
...  
Keyword(s):  
Water Quality ◽  
Ecological Status ◽  
Sensitivity Index ◽  
Diatom Assemblages ◽  
Diatom Index ◽  
Se Poland ◽  
Physicochemical Factors ◽  
Index Index ◽  
The City

Abstract The aim of this work was to investigate the diversity of diatom assemblages developed in the Przyrwa stream, to assess water quality based on benthic diatoms and to make an attempt at the identification of physicochemical factors having the greatest impact on the differentiation of diatom assemblages. Studies were conducted in 2011-2012 on the Przyrwa stream, a left-side tributary of the Wisłok River flowing through the city of Rzeszów and with its spring section located on the borders of the city. A total of 259 diatom taxa were identified in the Przyrwa stream during three studied seasons. At all investigated sites, the most abundant population consisted of Ulnaria ulna (Nitzsch) Compère, Cocconeis pediculus Ehrenb., Achnanthidium minutissimum (Kütz.) Czarnecki var. minutissimum, Navicula gregaria Donkin, Planothidium frequentissimum (Lange-Bert.) Lange-Bert., P. lanceolatum (Brébisson) Lange-Bert., Navicula lanceolata (C. Agardh) Ehrenb., Amphora pediculus (Kütz.) Grunow, Eolimna minima, (Grunow) Lange-Bert., Melosira varians C. Agardh and Cyclotella meneghiniana Kütz. Based on IPS (Specific Pollution Sensitivity Index) and GDI (Generic Diatom Index) indices, the ecological status of the Przyrwa stream was assessed as moderate to poor (mostly III-IV class of water quality), while the TDI (Trophic Diatom Index) index indicated a poor to bad ecological status (mainly IV-V class of water quality).

scholarly journals Factors Influencing Abundances and Population Size Structure of the Threatened and Endemic Cyprinodont Aphanius iberus in Mediterranean Brackish Ponds

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3264
Author(s):  
Serena Sgarzi ◽  
Sandra Brucet ◽  
Mireia Bartrons ◽  
Ignasi Arranz ◽  
Lluís Benejam ◽  
...  
Keyword(s):  
Water Quality ◽  
Total Nitrogen ◽  
Size Structure ◽  
Ecological Status ◽  
Maximum Size ◽  
Structured Populations ◽  
Negative Effect ◽  
The Mean ◽  
Abiotic And Biotic Factors

Aphanius iberus is an endemic cyprinodontoid fish species of Mediterranean ponds in danger of extinction. In this study, we studied some abiotic and biotic factors that can influence A. iberus’s size structure and density in Mediterranean brackish ponds. We sampled fish using fyke nets in 10 ponds of Empordà (Spain) during the spring season. Our results showed that a better ecological status (according to the Water Quality of Lentic and Shallow Ecosystems (QAELS) index), pond’s depth and pond’s isolation (reflected by an increase in total nitrogen) were related to larger individual sizes and more size-diverse populations. Increasing the salinity is known to help the euryhaline A. iberus acting as a refuge from competitors. Nevertheless, our results showed that higher conductivities had a negative effect on A. iberus’s size structure, leading to a decrease in the mean and maximum size of the fish. Fish abundance (expressed as captures per unit of effort (CPUE)) seemed to increase with increasing the pond’s depth and total nitrogen (the latter reflecting pond isolation). In conclusion, our results suggest that achieving a better pond ecological status may be important for the conservation of endangered A. iberus, because better size-structured populations (i.e., larger mean and average lengths) were found at higher water quality conditions.

scholarly journals Bio-Évaluation De La Qualité Des Eaux De Surface D’oued Beht (Maroc) Indice Biologique Global Des Réseaux De Contrôle Et De Surveillance (IBG-RCS)

2017 ◽  
Vol 13 (3) ◽  
pp. 94
Author(s):  
Lamhasni Nihad ◽  
Chillasse Lahcen ◽  
Timallouka Mohamed
Keyword(s):  
Water Quality ◽  
Biological Assessment ◽  
Biological Index ◽  
Surveillance Networks ◽  
Urban Waste ◽  
River Quality ◽  
Anthropogenic Action ◽  
The Impact

The present study concerns the biological assessment of Beht’s river quality in Morocco during the period Mai-June of 2014 using the standard Global Biological Index of Control and Surveillance Networks (GBICSN).Thus twelve sampling stations were chosen for the determination of the impact of agricultural and urban waste of Beht’s area on the biological waters quality of this river. As results this biological approach showed downgrading notes of the biological index from the watershed’s uphill to its downstream reflecting this way the deterioration of water quality with increasing anthropogenic action and inputs.

scholarly journals Zooplankton of Mokraya Sura River

2016 ◽  
Vol 51 ◽  
pp. 29-35 ◽  
Author(s):  
Vladymir Yakovenko ◽  
Elena Fedonenko
Keyword(s):  
Water Quality ◽  
Species Composition ◽  
Ecological Status ◽  
River Mouth ◽  
Joint Effect ◽  
Planktonic Rotifers ◽  
Results Of Biotesting ◽  
Industrial Sewage ◽  
Aeration Plant

Structural and functional characteristics of zooplankton as well as the results of biotesting were researched to indicate the ecological status of Mokraya Sura river sites. Zooplankton sampling was performed at the sites of Mokraya Sura river in autumn 2014 and in spring 2015. Species composition and abundance of zooplankton showed that zooplankton is most depressed at the upper sites of the river due to joint effect of slime accumulation eutrophication and industrial sewage. Biotesting results estimated water quality of the site near aeration plant sewage emergency discharge as most polluted of the river sites where large abundance and biomass of zooplankton were created mostly by planktonic rotifers. Large figures of filter-seeding crustaceans as well as low saprobity index indicate improvement in water quality at the sites 3 km and 2 km upstream from the river mouth.

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