The relationship between water flow and water quality in an experimental coastal watershed microbasin in Northeastern Brazil

Water quality is an important tool to support the planning and management of water resources. This article has as its main objective to evaluate changes in the quality of the surface waters of the Timbó stream as a function of flow in an experimental watershed located in São Cristóvão (SE), northeastern Brazil. Four sampling campaigns were carried out in 2018 to evaluate pH, dissolved oxygen, electrical conductivity, total dissolved solids, turbidity and temperature at three collection points. Data on land use and occupation and the flow of the Timbó stream were also obtained. The land use and occupation survey indicated that 51% of the total area of the microbasin is occupied by forests and that 49% is composed of pasture, undergrowth and exposed soil. The correlation analysis identified a strong correlation (p-value <0.05) between the studied parameters, with an emphasis on a direct relationship between Q and TUR (r = 0.9) and Q and O (r = 0.6) and an inversely proportional relationship between TDS and CE (r = -0.8), confirming the results of a principal component analysis, where the parameters contributing the most to the quality of the investigated water resource were CE, TDS, OD and turbidity.

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A Study on the Relationship between Land Use Change and Water Quality of the Mitidja Watershed in Algeria Based on GIS and RS

Sustainability ◽

10.3390/su12093510 ◽

2020 ◽

Vol 12 (9) ◽

pp. 3510 ◽

Cited By ~ 2

Author(s):

Dechao Chen ◽

Acef Elhadj ◽

Hualian Xu ◽

Xinliang Xu ◽

Zhi Qiao

Keyword(s):

Water Quality ◽

Land Use ◽

Land Use Change ◽

River Basin ◽

Agricultural Land ◽

Vegetation Coverage ◽

Water Quality Control ◽

Urban Settlement ◽

The Relationship

Many catchments in northern Algeria, including the coastal Mitidja Basin in the north central part of the country have been negatively affected by the deterioration of water quality in recent years. This study aims to discover the relationship between land use change and its impact on water quality in the coastal Mitidja river basin. Based on the data of land use and water quality in 2000, 2010 and 2017, the relationship between land use change and surface water quality index in the Mitidja Watershed was discussed through GIS and statistical analysis. The results show that the physical and chemical properties of the Mitidja river basin have obvious spatial heterogeneity. The water quality of upstream was better than that of downstream. There was a significant spatial relationship between the eight water quality indicators and three land use types, including urban residential land, agricultural land and vegetation. In most cases, settlements and agricultural land are the dominant factors leading to river pollution, and higher vegetation coverage helps to improve water quality. The regression model revealed that percentage of urban settlement area was a predictor for NH4-N, BOD5, COD, SS, PO4-P, DO and pH, while vegetation was a predictor for NO3-N. The analysis also showed that during this period, urban settlement areas increased sharply, which has a significant impact on water quality variables. Agricultural land only had a significant positive correlation with PO4-P. The results provide an effective way to evaluate river water quality, control water pollution and land use management by landscape pattern.

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Effects of land use on chemical water quality of three small streams in Budapest

Open Geosciences ◽

10.1515/geo-2016-0012 ◽

2016 ◽

Vol 8 (1) ◽

Cited By ~ 4

Author(s):

Zsuzsanna Angyal ◽

Edit Sárközi ◽

Ádám Gombás ◽

Levente Kardos

Keyword(s):

Water Quality ◽

Land Use ◽

Chemical Properties ◽

Small Areas ◽

Small Streams ◽

Laboratory Test Results ◽

The Relationship ◽

The City ◽

Chemical Water

AbstractThe location and development of cities has been influenced basically by various environmental factors. However, the relationship is bilateral, because not only the environment can affect the city, but the city can affect the environment in different ways, depending on recovery. This is especially true in the case of large cities such as Budapest where the different geological, geomorphological, hydrological, soil and bio-geographical conditions can be changed in very small areas, which implies that land use can be also modified as well. The aim of our study was to determine the chemical water quality of three small streams in Budapest which have same water flow and compare the field and the laboratory test results. Between many natural characteristics of these streams similarity is evident, however, several differences were found between the watersheds in terms of human land use. Statistical data analysis was performed as well, which was the aim to explore the relationship between the parameters. Overall, according to our study it can be concluded, the small streams have similar water chemical properties, but some parameters need special attention in the future, because the investigated small streams can be categorized into polluted and sometimes heavily polluted category.

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Changes in Selected Water Quality Parameters in the Utrata River as a Function of Catchment Area Land Use

Water ◽

10.3390/w13212989 ◽

2021 ◽

Vol 13 (21) ◽

pp. 2989

Author(s):

Katarzyna Dębska ◽

Beata Rutkowska ◽

Wiesław Szulc ◽

Dariusz Gozdowski

Keyword(s):

Water Quality ◽

Land Use ◽

Dissolved Oxygen ◽

Total Phosphorus ◽

Surface Waters ◽

Nitrate Nitrogen ◽

Ammonia Nitrogen ◽

Limit Values ◽

The Impact

Surface waters are very important for society, as they are a source of potable water, as well a water supply for agricultural, industrial and recreational purposes. This paper presents changes in the quality of the water in the Utrata River, along its entire length, as a function of the catchment area’s land use. Water-quality measurements were carried out once a month for a total period of one year (April 2019–March 2020) at 24 measurement points. The concentrations of the following compounds were measured: total phosphorus, ammonia nitrogen and nitrate nitrogen, dissolved oxygen, and chemical oxygen demand. The results were compared with the limit values specified in the Regulation of the Minister of Maritime Economy and Inland Navigation. In order to determine the impact of land use on water quality in the Utrata River, principal component analyses (PCA) were conducted. The research demonstrated a considerably negative impact of agricultural land use and the presence of urban areas on the water quality of the Utrata River, with elevated concentrations of total phosphorus, ammonia nitrogen, nitrate nitrogen and COD, and decreasing concentrations of dissolved oxygen. The presented results point to the need for effective strategies to mitigate the adverse impact of agriculture and urbanisation on the environment and surface waters.

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Avaliação da Qualidade da Água em Microbacias Hidrográficas do Extremo Sul da Bahia, Brasil

Revista Brasileira de Geografia Física ◽

10.26848/rbgf.v13.5.p2447-2461 ◽

2020 ◽

Vol 13 (5) ◽

pp. 2447

Author(s):

Reinaldo Brandi Abreu Bifano ◽

Catarina Da Rocha Marcolin ◽

Maria Otávia Silva Crepaldi ◽

Raquel Viana Quinelato ◽

Adriana Tiemi Ramos Okumura ◽

...

Keyword(s):

Water Quality ◽

Land Use ◽

Urban Areas ◽

Principal Component ◽

Water Quality Assessment ◽

Multivariate Statistical ◽

Rainy Period ◽

Physical Chemical ◽

Significant Difference

Este estudo teve como objetivo avaliar a qualidade da água das microbacias dos rios Jardim e Mutari, situadas no Extremo Sul da Bahia, através da avaliação de parâmetros físicos, químicos, microbiológicos e do uso e ocupação da terra. Para isso foram realizadas quatro coletas, em abril, maio, julho e outubro de 2019, em 8 pontos amostrais, selecionados de acordo com possíveis fontes pontuais e difusas de poluição. Foram analisados os parâmetros temperatura, potencial hidrogeniônico (pH), salinidade, oxigênio dissolvido (OD), demanda bioquímica de oxigênio (DBO), nitrito, nitrato, amônia, nitrogênio total (NT), fósforo total (PT), sólidos dissolvidos totais, coliformes totais e termotolerantes, que foram comparados com o estabelecido pela CONAMA n° 357/2005. Já as análises de uso e ocupação da terra, foram realizadas utilizando o software QGIS. Com os resultados obtidos observou-se que os parâmetros pH, OD, DBO, PT e NT apresentaram valores em desacordo com o permitido pela legislação, principalmente nos pontos próximos às áreas urbanizadas. A análise estatística multivariada PCA, permitiu identificar diferenças na qualidade da água das microbacias no período seco e chuvoso.Já o teste Kruskal-Wallis indicou diferença significativa entre os ambientes analisados. Nossos resultados indicam que é de suma importância a tomada de ações por parte do poder público que visem minimizar os impactos causados pelo uso e ocupação desordenada da terra e atividades agrícolas na qualidade da água dessas bacias hidrográficas. Cabe destacar também a importância de ações voltadas a educação ambiental principalmente da população ribeirinha. Water Quality Assessment in Hydrographic Watersheds in the Extreme South of Bahia, BrazilA B S T R A C TThis study aimed to evaluate the water quality of the Jardim and Mutari rivers, located in southern Bahia, by means of evaluating physical, chemical and microbiological parameters and land use and occupation. Four campaigns were carried out in April, May, July, and October, 2019, at 8 stations, selected according to possible punctual and diffusive sources of pollution. The water quality results were compared with that established by CONAMA n.º 357/2005and the Water Quality Index (IQA) was calculated from these. For data analysis, Principal Component Analysis (PCA) was also performed and Kruskal-Wallis tests were applied, using the PAST software.The land use and occupation analyses were performed using the QGIS software. We observed that the pH, OD, DBO, PT and NT were in disagreement with those allowed by the legislation, mainly near urban areas. The multivariate statistical analysis PCA, allowed to identify differences in the water quality of the watersheds in the dry and rainy period. The Kruskal-Wallis test indicated a significant difference between the environments analyzed.The supervised classification confirmed the need to recover areas along the riverbed within the analyzed micro-basins.Our results indicate it is crucial that public authorities act to minimize the impacts caused by the disorderly urban occupation and agricultural activities. It is also worth mentioning the importance of actions aimed at environmental education, mainly of the riverside population.Keywords: water quality, physical, chemical and biological parameters, hydrographic basins, rivers.

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HUBUNGAN KUALITAS KEHIDUPAN KERJA TERHADAP KINERJA PERAWAT PELAKSANA

Jurnal Ilmiah Permas: Jurnal Ilmiah STIKES Kendal ◽

10.32583/pskm.9.4.2019.413-420 ◽

2019 ◽

Vol 9 (4) ◽

pp. 413-420

Author(s):

Amella Gusty ◽

Dachriyanus Dachriyanus ◽

Leni Merdawati

Keyword(s):

District Hospital ◽

Simple Random Sampling ◽

Work Life ◽

Quality Of Work Life ◽

P Value ◽

Work Context ◽

Cross Sectional ◽

Quality Of Work ◽

The Relationship

Kinerja perawat merupakan hasil yang dicapai dalam melaksanakan asuhan keperawatan di rumah sakit. Terciptanya asuhan keperawatan yang optimal sangat diperlukan dukungan dari pihak rumah sakit salah satunya adalah menciptakan kualitas kehidupan kerja baik bagi perawat. Penelitian ini bertujuan untuk mengetahui hubungan antara kualitas kehidupan kerja terhadap kinerja perawat pelaksana di RSUD Teluk Kuantan. Jenis penelitian kuantitatif dengan pendekatan cross sectional. Jumlah sampel 120 responden yang diperoleh melalui proportionate simple random sampling. Hasil penelitian menunjukkan kualitas kehidupan kerja perawat RSUD Teluk Kuantan berada pada kategori sedang, kinerja perawat berada pada kategori kurang baik. Berdasarkan analisis kedua variabel teridentifikasi bahwa tidak ada hubungan antara kualitas kehidupan kerja dengan kinerja perawat pelaksana dengan p value 0,817. Dimensi work context merupakan komponen yang memiliki hubungan dengan kinerja perawat pelaksana dengan p value 0,008, dimensi work life tidak berhubungan secara signifikan dengan kinerja perawat. Kesimpulan penelitian diketahui tidak ada hubungan antara kualitas kehidupan kerja dengan kinerja perawat pelaksana. Ada hubungan dimensi work context dengan kinerja perawat pelaksana. Tidak ada hubungan dimensi work life dengan kinerja perawat. Kata kunci: kualitas kehidupan kerja, kinerja, perawat pelaksana THE RELATIONSHIP BETWEEN THE QUALITY OF WORK LIFE AND THE PERFORMANCE OF IMPLEMENTERS NURSES ABSTRACT Nurse performance is the result achieved in implementing nursing care in a hospital. The creation of optimal nursing care is very much needed support from the hospital, one of which is to create a good quality of work life for nurses. This study aims to determine the relationship between the quality of work life and the performance of nurses at the Kuantan District Hospital. This type of quantitative research with cross sectional approach. The number of samples of 120 respondents obtained through proportionate simple random sampling. The results showed that the quality of work life of nurses at the Kuantan District Hospital was in the medium category, the nurses' performance was in the unfavorable category. Based on the analysis of the two variables, it was identified that there was no relationship between the quality of work life with the performance of implementing nurses with a p value of 0.817. The work context dimension is a component that has a relationship with the performance of nurses implementing with p value 0.008, the dimension of work life does not significantly correlate with nurse performance. The conclusion of the research is that there is no relationship between the quality of work life and the performance of the implementing nurses. There is a relationship between the dimensions of the work context and the performance of the nurses. There is no relationship between the dimensions of work life and nurse performance. Keywords: quality of work life, performance, implementers nurse

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APPLICATION OF THE ATP-BIOLUMINESCENCE METHOD TO ASSESS THE QUALITY OF SANITATION OF MILKING EQUIPMENT

Problems of Veterinary Sanitation, Hygiene and Ecology ◽

10.36871/vet.san.hyg.ecol.202004010 ◽

2020 ◽

Vol 1 (4) ◽

pp. 468-472

Author(s):

P.A. Popov ◽

◽

D.V. Gruznov ◽

S.V. Tokarev ◽

◽

...

Keyword(s):

Dairy Farms ◽

Laboratory Studies ◽

Before And After ◽

Atp Bioluminescence ◽

Microbial Number ◽

Proportional Relationship ◽

The Relationship ◽

Number Of Bacteria ◽

Bioluminescence Method

The article presents the results of determining the relationship between the total microbial number and microbial ATP on the surface of milking equipment before and after treatment with neutral anolyte ANK-SUPER. The possibility of using the ATP-bioluminescence method to control the quality of sanitation of milking equipment on dairy farms is shown. Laboratory studies revealed a proportional relationship between the level of bacterial ATP and the number of bacteria on the surface of milking equipment before and after sanitation.

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THE INFLUENCE OF LOCAL LAND USE ON THE WATER QUALITY OF URBAN RIVERS

International Journal of Geomate ◽

10.21660/2016.23.1187 ◽

2016 ◽

Author(s):

Juan Carlos Covarrubia

Keyword(s):

Water Quality ◽

Land Use ◽

Urban Rivers

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Conversion of land use and household livelihoods in Vietnam: A study in Nghe An

Open Agriculture ◽

10.1515/opag-2021-0010 ◽

2021 ◽

Vol 6 (1) ◽

pp. 82-92

Author(s):

Tran Tuan Nguyen

Keyword(s):

Quality Of Life ◽

Land Use ◽

Industrial Park ◽

Average Income ◽

Positive Side ◽

Current Period ◽

Improper Use ◽

The Relationship ◽

Double Impact

Abstract This article describes the relationship between the land use purpose conversion and households’ livelihoods in suburban Vinh City, Nghe An province. In the survey with 170 households losing their land to build the VSIP Nghe An industrial park project, this article shows the double impact of this issue. (1) On the positive side, households’ quality of life in the current period shows a significant improvement. They are living in better conditions with more spacious houses and modern facilities than before. The average income of households increased by 900 USD than before. (2) On the negative side, the unemployment rate increases with women older than 35 years and men older than 40 years. Along with the improper use of compensation received, income sustainability is a doubt for these households’ future.

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