scholarly journals Long-Term Ecological Health Assessment of a Restored Urban Stream Based on Chemical Water Quality, Physical Habitat Conditions and Biological Integrity

Water ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 114 ◽  
Author(s):  
Jung-Jae Kim ◽  
Usman Atique ◽  
Kwang-Guk An
Keyword(s):  
Water Quality ◽  
Fish Assemblages ◽  
Good Condition ◽  
Oxygen Demand ◽  
Biotic Integrity ◽  
Urban Stream ◽  
Physical Habitat ◽  
Quality Factors ◽  
Restoration Measures ◽  
Chemical Water

We studied the chemical water quality, physical habitat and biotic integrity of an urban stream subjected to restoration measures in South Korea. We used the water pollution index (WPI), qualitative habitat evaluation index (QHEI) and index of biotic integrity (IBI) on the water quality, physical habitat and fish assemblage data respectively, during 2007–2016 in Gap Stream to evaluate the ecological health before and after restoration measures. The results revealed annual mean total phosphorus (TP) dramatically decreased by 13-fold for 10 years and the values of biological oxygen demand (BOD) and chemical oxygen demand (COD) also decreased by >50% over the time, indicating decrease in nutrient enrichment and organic matter pollution after restoration measures. In the meantime, biological health analyses using IBI indicated no major transformation in fish assemblages under restoration impact. However, the proportion of sensitive species increased, and tolerant species decreased after restoration. Gap stream is home to 50 distinct fish species. QHEI proposed that the physical habitat health was in ‘good’ condition during the study period. WPI showed the chemical water quality status remained ‘poor’ during and before restoration but improved to ‘fair-good’ condition in the ensuing years after restoration. The IBI results, however, indicated ‘very poor-poor’ biotic integrity irrespective of restoration measures. CHL-a and TP showed strong (r < 0.7) to moderately strong (r = 0.5–0.7) correlation with significantly important water quality factors. Spatially significant pattern change in TN and TP was obvious as measured levels were significantly higher (p < 0.01) in downstream than upstream. Principal component analysis successfully indicated the placement of water quality factors and indices used as in three distinct stream compartments. The higher pollutant levels in the downstream mainly linked to the nutrient-rich effluents from emerging from the wastewater treatment plants (WWTPs) and industrial complexes operative in the stream catchment. Overall, restoration measures indicated minor impact on fish assemblages and physical habitat due to slow and steady improvement, however, water quality improved due to a decline of nutrients and chemicals downstream. This indicated a positive tendency of improvements in physical habitat and richness of fish assemblages in Gap Stream.

Historical Changes in Large River Fish Assemblages of the Americas

2005 ◽  
Author(s):  
Keyword(s):  
Water Quality ◽  
Waste Treatment ◽  
Fish Assemblages ◽  
Large River ◽  
Low Flow ◽  
Physical Habitat ◽  
Willamette River ◽  
Habitat Alterations ◽  
The Past ◽  
Species Occurrences

<em>Abstract.</em>—The Willamette River is Oregon’s largest river, with a basin area of 29,800 km<sup>2</sup> and a mean annual discharge of 680 m<sup>3</sup>/s. Beginning in the 1890s, the channel was greatly simplified for navigation. By the 1940s, it was polluted by organic wastes, which resulted in low dissolved oxygen concentrations and floating and benthic sludge deposits that hindered salmon migration and boating. Following basin-wide secondary waste treatment and low-flow augmentation, water quality markedly improved, salmon runs returned, and recreational uses increased. However, water pollution remains a problem as do physical habitat alterations, flow modification, and alien species. Fish assemblages in the main-stem Willamette River were sampled systematically, but with different gear, in the summers of 1945, 1983, and 1999. In the past 53 years, tolerant species occurrences decreased and intolerant species occurrences increased. In the past 20 years, alien fishes have expanded their ranges in the river, and four native fish species have been listed as threatened or endangered. We associate these changes with improved water quality between 1945 and 1983, fish migrations, altered flow regimes and physical habitat structure, and more extensive sampling.

Landscape Influences on Stream Habitats and Biological Assemblages

2006 ◽  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Fish Assemblages ◽  
Stream Water ◽  
Riparian Buffers ◽  
Physical Habitat ◽  
Land Uses ◽  
Stream Water Quality ◽  
Agricultural Streams ◽  
And Function

<em>Abstract.</em>—Ecologists recognize that surrounding land use can influence the structure and function of aquatic ecosystems, but few studies have explicitly examined the relative effects of different types of land use on stream ecosystems. We quantified the relationships between different land uses (forested, urban, agricultural with or without riparian buffers) and stream physicochemical variables and resident fish assemblages in 21 southwestern Michigan streams. These streams were located within a single basin (Kalamazoo River) and ecoregion to minimize differences in natural landscape conditions. Streams responded to a gradient of land use, with forested streams having the least degraded water quality, physical habitat, and fish assemblages, and agricultural streams lacking buffers being the most degraded. Urban and agricultural streams with buffers displayed characteristics intermediate to forested and agricultural streams lacking buffers. In general, habitat complexity and water quality declined across this land-use gradient from forested to agricultural streams, whereas fish density, richness, and dominance by tolerant species increased along the land-use gradient. Although urban streams had lower percentages of altered land use (i.e., <40% urban) in their catchments compared to agricultural streams (i.e., >50% agriculture), both land uses appeared to have similar detrimental effects on streams suggesting higher per unit area impacts of urbanization on streams. The presence of forested riparian buffers along agricultural streams increased the complexity of instream habitat, but resulted in few benefits to fish assemblages, suggesting that stream water quality in altered landscapes may be constraining fish assemblages more than physical habitat.

scholarly journals Health Evaluation of Wader Fish (Puntius sp.) Caught from Brantas River, Malang City, Indonesia

2021 ◽  
Vol 934 (1) ◽  
pp. 012059
Author(s):  
A M S Hertika ◽  
D Arfiati ◽  
E D Lusiana ◽  
R B D S Putra ◽  
D R N Wasti
Keyword(s):  
Water Quality ◽  
Anthropogenic Activities ◽  
Oxygen Demand ◽  
Pollution Index ◽  
Total Suspended Solid ◽  
River Pollution ◽  
Research Area ◽  
Suspended Solid ◽  
Quality Factors ◽  
Hematological Profile

Abstract Anthropogenic activities along watershed area are often causing river pollution. This will affect the sustainability of aquatic resources, such as fish. One of the fish species in Brantas River that can be employed as bioindicator of water pollution is Wader fish (Puntius, sp.). The aim of this research was to analyze the health of Wader fish based on tits hematological profile. This study utilized descriptive method and conducted in three sites of Brantas River that located in Malang city, Indonesia. We took water quality parameters data to obtain Pollution Index of the river and blood samples to evaluate the hematological profile of wader fish caught in research area. Further analysis to evaluate relationship between water quality factors and hematological profile of Wader fish was performed by using Canonical Correspondence Analysis (CCA) with the support of PAST software version 4.06. The results showed that pH, temperature, dissolved oxygen (DO), ammonia and total suspended solid (TSS) of the study area were within the normal range, while the biological oxygen demand (BOD) value was above the standard. In addition, Pollution Index of this research suggested that Brantas River condition was low polluted. Meanwhile, the analysis of hematological profile of wader fish in terms of erythrocytes and hemoglobin were below than the recommended value, leukocytes were normal, and micronuclei were above the standard.

Water quality and prospects for revitalization of an urban stream in Recife, Brazil

2020 ◽  
Vol 11 (5) ◽  
pp. 284-294
Author(s):  
José Luís Said Cometti ◽  
Jaime Joaquim da Silva Pereira Cabral ◽  
Taylse Marielly da Conceição
Keyword(s):  
Water Quality ◽  
Riparian Forest ◽  
Stream Water ◽  
Oxygen Demand ◽  
Urban Stream ◽  
The European Union ◽  
Stream Water Quality ◽  
Anthropogenic Pressures ◽  
Untreated Sewage ◽  
Lake Zone

The urbanization of Recife characterized an occupation of the Capibaribe River banks and its tributaries. This caused the grounding, rectification and degradation of several streams. Thus, this paper presents a diagnosis of the Cavouco stream water quality and suggests measures for its restoration. The collections were performed between 2016 and 2017 in three sampling points. Analysis adopted the Standard Methods for the Examination of Water and Wastewater and calculated the Water Quality Index (WQI). A correlation test between the parameters was applied to understand the phenomenon. Actions to revitalize it followed the European Union Water Framework Directive. The WQI of the Cavouco stream had a good presentation in the small lake zone; it was poor in the Federal University (UFPE) region and awful in the Caxangá Avenue section.  Dissolved Oxygen (OD) concentration was negatively correlated with Biochemical Oxygen Demand (BOD), decreasing from upstream to downstream.  Water quality degradation is associated with untreated sewage discharge along the stream. The proposal to its recovery is to collect and treat domestic sewage, remove irregular housing, restore the riparian forest, control erosion, create linear parks and search for governance mechanisms with public participation. The proposed interventions are fundamental for the restoration of Cavouco's ecological potential, with improved water quality and reduced anthropogenic pressures.

scholarly journals Longitudinal patterns in fish and macrozoobenthos assemblages reflect degradation of water quality and physical habitat in the Bílina river basin

2010 ◽  
Vol 55 (No. 3) ◽  
pp. 123-136 ◽  
Author(s):  
P. Jurajda ◽  
Z. Adámek ◽  
M. Janáč ◽  
Z. Valová
Keyword(s):  
Water Quality ◽  
Species Richness ◽  
River Basin ◽  
Fish Species ◽  
Fish Assemblages ◽  
Physical Habitat ◽  
Elbe River ◽  
River Stretch ◽  
The Elbe River ◽  
Bílina River

The aim of this study was to provide the first account of fish and macroinvertebrate communities in a heavily degraded river basin in the Czech Republic. Fish and macrozoobenthos were surveyed at 18 sites in the Bílina River and 11 sites in tributary streams during June–July 2007. Fish were sampled by electrofishing and macrozoobenthos were collected by kick-sampling using a sweep net. The composition of macroinvertebrate assemblages in headwater and reference sites in the upper Bílina River indicated clean water with saprobic index (SI) 1.31–1.43 followed by a transitional stretch downstream the Kyjická reservoir (SI 2.05–2.32) and dramatic decline of water quality to SI 3.18 in the river stretch downstream of industrial and municipal pollution at Litvínov-Záluží. Despite several minor pollution sources on the subsequent downstream river stretch until its mouth into the Elbe River, the water quality indicators fluctuated in the range of lower betamesosaprobity (SI 2.06–2.58). Species richness and biodiversity indices followed a similar pattern as river saprobity. Twenty-three fish species were documented in the Bílina River basin. Chub (<I>Leuciscus cephalus</I>), gudgeon (<I>Gobio gobio</I>) and roach (<I>Rutilus rutilus</I>) were the most frequent species at the Bílina sites. Chub was the most numerous fish in the tributaries. Fish species richness in the longitudinal profile did not increase downstream in the Bílina mainstem, most likely because the presence of reservoirs and water pollution interrupted the river continuum pattern. Qualitative data on fish assemblages corresponded to the course of environmental stress. A sustainable fish community was documented only in the lowermost site in Ústí nad&nbsp;Labem near the confluence with the Elbe River. The Bílina River tributaries constitute potential refuges for fish in this basin.

scholarly journals Spatial analysis of water quality of the Karra River, Hetauda, Nepal

2016 ◽  
Vol 8 (1) ◽  
pp. 58-65
Author(s):  
Sadhana Pradhanang
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Surface Waters ◽  
Industrial Wastewater ◽  
Good Condition ◽  
Oxygen Demand ◽  
Industrial Effluents ◽  
Physico Chemical ◽  
Water Region

The assessment of water quality of Karra River in Hetauda, Nepal was carried out by determining the changes in the concentration levels of eight physico-chemical parameters (pH, Electric conductivity (EC), bicarbonate, dissolved oxygen (DO), silica, chemical oxygen demand (COD), phosphate and nitrate). The samples were collected from upstream, industrial belt and downstream of the Karra River. The Karra River is the dumping ground for industrial effluents of Hetauda industrial district (HID). On analysis, the concentrations of most of the physico-chemicals parameters were found to be above the prescribed limits for industrial wastewater into inland surface waters. Dissolved Oxygen was found to be in the range of 0.49- 8.47 mg/L while COD, nitrate and phosphate were recorded in the range of 8.3-367 mg/L, 0.35- 78.22 mg/L and 0.01-1.64 mg/L, respectively. Concentrations of most of these parameters were within the prescribed limits in the samples collected from upstream and downstream, revealing the river still in good condition at these points indicating less human interference at the head water region and good self-purification capacity at downstream. However the concentrations of the pollutants’ parameters are higher at the sample points just after effluent discharge.Journal of Hydrology and Meteorology, Vol. 8(1) p.58-65

scholarly journals Preliminary Analysis of Load Input into the Accumulation Varaždin by Rain Overflow

2021 ◽  
Vol 15 (4) ◽  
pp. 574-580
Author(s):  
Domagoj Nakić ◽  
Tanja Trabe Baranašić ◽  
Dražen Vouk ◽  
Bojan Đurin
Keyword(s):  
Water Quality ◽  
Chemical Oxygen Demand ◽  
Suspended Solids ◽  
Good Condition ◽  
Three Dimensional ◽  
Treatment Plant ◽  
Drainage System ◽  
Oxygen Demand ◽  
Ecological Condition ◽  
Three Dimensional Model

The wastewater treatment plant Varaždin upgrade project envisages the reconstruction of the rain overflow directly upstream of the plant. Physicochemical parameters of water quality (Biological Oxygen Demand, Chemical Oxygen Demand, Total Nitrogen, Total Phosphorus, Suspended Solids) in sewage/drainage system and in the accumulation were analyzed. In accordance with expected values of concentrations in overflow and in the accumulation, an analysis of the water quality in the accumulation after mixing was performed with certain assumptions. The results show that the ecological condition of the accumulation generally remains unchanged, classified as good condition, except for Chemical oxygen demand which is a critical parameter. Paper refers to the frequency and duration of possible exceedances of the Chemical oxygen demand limits and gives critical analysis of the realistically expected impacts. A proposal for conducting more detailed analysis with a larger database and by modelling pollution discharge by a complex three-dimensional model is given.

scholarly journals Water Quality and Dynamic of Schistosomiasis Intermediate Host Snails in the Lake Areas, District of So-Ava, Southern Benin

2018 ◽  
Vol 6 (6) ◽  
Author(s):  
Moudachirou Ibikounlé1 ◽  
Ablavi A. Onzo-Aboki ◽  
Elokou Alabi ◽  
Samoussou Dine Mahama ◽  
Samoussou Dine Mahama ◽  
...  
Keyword(s):  
Water Quality ◽  
Intermediate Host ◽  
Oxygen Demand ◽  
Control Programme ◽  
Freshwater Snails ◽  
Intermediate Hosts ◽  
Water Parameters ◽  
Physico Chemical ◽  
Physical And Chemical ◽  
Chemical Water

Objectives: Urinary schistosomiasis is known to be endemic in the lake Nokoué areas of the District of So-Ava. For the past ten years, the National Control Programme for Communicable Diseases of the Ministry of Health has been making efforts to control schistosomiaisis morbidity through mass drug treatment with Praziquantel. This study aimed to assess the diversity and dynamic of potential snails known as schistosomiasis intermediate hosts. Methodology and Results: This study was carried out for 12 months (from July 2015 to June 2016) and consisted in the periodical analysis of the physical and chemical water parameters (temperature, oxygen concentration, pH, nitrite and nitrate rates. Salinity, total dissolved solids (TDS) and, biochemical oxygen demand) in relation with diversity, distribution and relative abundance of freshwater snails (Bulinus forskalii, B. globosus and B. truncatus). To this end, seven harvesting sites on Lake Nokoué were, reasonably selected for monthly hydrobiological and malacological data monitoring. The results showed a variable correlation between the dynamic of schistosomiasis intermediate host snailsm and several physico-chemical water parameters. Bulinus globosus was negatively influenced by salinity and nitrate rates while B. forskalii was negatively influenced by pH, Oxygen, TDS, salinity and nitrate rates. The three species of freshwater snails were strongly influenced by the water temperature. Conclusion: The results suggest a seasonal schistosome transmission induced by the seasonal dynamic of intermediate host snails. Water quality seems appropriate to the development of host snails from December to March and would be the strong period of schistosomiasis transmission. However, furthermore studies will need for well understanding the dynamic transmission necessary for developing adapted strategy control.

Dynamic simulation of the effects of combined sewage overflow on small urban streams

1999 ◽  
Vol 39 (9) ◽  
pp. 235-242
Author(s):  
A. Petruck ◽  
D. Jäger ◽  
F. Sperling
Keyword(s):  
Water Quality ◽  
Oxygen Demand ◽  
Weather Conditions ◽  
Quality Parameters ◽  
Urban Stream ◽  
Water Quality Simulation ◽  
Simulated Event ◽  
Typical Event ◽  
Combined Sewage Overflow ◽  
Set Up

The recently developed water quality simulation model FGSM of the German Association for Water Pollution Control (ATV) has been set up to simulate major water quality parameters of a small urban stream. After collecting the necessary input data the model was calibrated for dry weather conditions. Based on the calibrated model typical combined sewage overflow events were simulated. The model was able to simulate dry weather conditions well. For the simulation of combined sewage overflow events a typical event was simulated. The model was able to simulate high peak flows almost without damping. The biological oxygen demand was shown to sharply increase up to 20 mg/l, while the oxygen concentration decreased to less than 5 mg/l. The simulation showed that dissolved oxygen levels stayed during the simulated event above 4 mg/l. The FGSM appears to be a valuable tool for assessing not only the chronic, but also the acute effects of combined sewage overflow events.

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