Effects of land use and sampling distance on water quality in tropical headwater springs (Pimenta creek, São Paulo State, Brazil)

Marmontel, Caio Vinicius Ferreira; Lucas‐Borja, Manuel Esteban; Rodrigues, Valdemir Antônio; Zema, Demetrio Antonio

doi:10.1016/j.scitotenv.2017.12.011

Cited by 41 publications

(9 citation statements)

References 64 publications

(65 reference statements)

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“…Usually, groundwater tends to have a high electric conductivity, resulting from the presence of high amounts of dissolved inorganic substances in ionized form. According to Marmontel et al [37], the significant variation in EC values can be attributed to the different land uses, the spatial variation of spring locations, and the state of conservation of the vegetation. The electrical conductivity is an important parameter in determining the suitability of water for a specific purpose.…”

Section: Resultsmentioning

confidence: 99%

Quality of Drinking Water from Springs in Palestine: West Bank as a Case Study

Daghara

Al‐Khatib

Al-Jabari

2019

Journal of Environmental and Public Health

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The shortage of fresh water creates acute challenges in the West Bank of Palestine. Springs provide a main water resource in the West Bank. Investigating springs’ water quality is essential step for promoting their public use. The aim of this research is to assess the microbiological and physiochemical quality parameters of drinking water from springs. The study methodology included sampling through field work and laboratory testing for water quality parameters using standard procedures. The study area covered all locations containing licensed springs by the Palestinian Water Authority in the West Bank of Palestine. The number of collected samples was 127 covering 300 springs. The chemical, physical, and biological parameters for each sample were measured. Then, the obtained characteristics were evaluated based on national and international quality standards (PSI and WHO). The investigated parameters included temperature, pH, EC, total hardness, concentrations of nitrate, sodium ions, total chlorine, residual chlorine, turbidity, and total and faecal coliforms. Most of investigated physical and chemical parameters were within the acceptable standard limits. However, the turbidity and chloride and nitrate concentrations exceeded standard limits. The findings indicate that only a minor fraction of the samples (2%) requires chlorination treatment, while most of the springs (97% of samples) are classified as possessing no risk.

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Section: Resultsmentioning

confidence: 99%

Quality of Drinking Water from Springs in Palestine: West Bank as a Case Study

Daghara

Al‐Khatib

Al-Jabari

2019

Journal of Environmental and Public Health

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“…A partir do ACP, foram identificadas 19 componentes principais (CPs), no qual as 4 primeiras componentes explicam 78,02% da variância dos dados e cujo autovalor é maior que 1. Apesar de não existir uma norma padrão sobre o número de fatores que deve ser extraído das análises, com base na literatura, o critério de Kaiser é amplamente usado, e sugere a extração dos fatores com valor de eigenvalue (autovalor) acima de um (Golzarian e Frick, 2011; Calijuri et al, 2012;Vitale et al, 2017;Queiroz, Silva, e Brazil de Paiva, 2017) e o número de componentes que representem 60% da variância acumulada, refletem uma ideia aceitável da variância original de acordo com Hair, et al,2009;Gardiman Junior, 2015;Ferreira, et al, 2015) Na ACP, os dois primeiros eixos explicam 60,32% da variância total dos dados, resultados semelhantes foram encontrados por (Nascimento, Reis, Roeser, e Santiago, 2019). O eixo 1 apresentou 44,67%, cujo auto vetor é de 8,48, e se correlacionou positivamente com DBO, OD, NT, TºC, pH, turbidez e clorofila-a, e o eixo 2 apresentando 15,64% da variância dos dados e autovalor 2,97, com correlação positiva com os STD, CE e salinidade (Figura 5).…”

Section: Análises Estatísticasunclassified

“…Fia, et al (2015) evidenciaram que a entrada de matéria orgânica e de nutrientes de origem doméstica, assim como atividades agropecuárias, na rede de drenagem reduziu a qualidade da água da área urbana em Lavras, Minas Gerais. Já Ferreira et al, (2018) comprovaram a importância da mata ciliar na contribuição para a adequação da qualidade da água conforme legislação ambiental.…”

Section: Introductionunclassified

Determinação da Qualidade da Água de um Rio Tropical sob a perspectiva do Uso do Solo e Cobertura Vegetal

Okumura

Silva

et al. 2020

Rev. Bras. Geog. Fis.

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A água tem o papel fundamental para o desenvolvimento econômico de uma nação, além de ser essencial para a vida de todos os seres vivos. Atividades antrópicas, como o uso do solo, causam alterações nos parâmetros da qualidade da água. Neste estudo, foi avaliada a variabilidade espacial e sazonal dos parâmetros físicos, químicos, biológicos e microbiológicos, bem como, as possíveis relações entre os padrões do uso do solo e cobertura vegetal no Rio dos Frades, Bahia. As concentrações determinadas foram comparadas com os padrões estabelecidos pela resolução do Conselho Nacional de Meio Ambiente - CONAMA nº 357/2005. Com os resultados obtidos observou-se que os parâmetros oxigênio dissolvido, pH e demanda bioquímica de oxigênio ficaram em desacordo com valores estabelecidos pela legislação, nos locais que sofre maior interferência das zonas urbanas dos municípios de Guaratinga e Itabela. Com o auxílio de análises multivariadas observou-se que os parâmetros avaliados apresentam comportamento distinto de acordo com a precipitação, nos quais a série nitrogenada se correlacionou com o período chuvoso enquanto a turbidez com o período seco. Com o auxílio de ferramentas de um Sistema de Informações Geográficas (SIG), foi realizada a delimitação da bacia e a classificação supervisionada do uso do solo e cobertura vegetal, revelando a forte pressão antrópica sofrida pelo rio, causada principalmente pela agropecuária. Water quality assessment of a tropical river from a soil usage and vegetation cover perspectiveA B S T R A C TWater plays a fundamental role in the economic development of a nation, besides being essential for the life of all living beings. However, anthropic activities, such as land use, have caused changes in the quality of this resource. Therefore, this study evaluated the spatial and seasonal variation of the physical-chemical, biological and microbiological factors, as well as the possible relationships between the patterns of land use and vegetation cover in the Rio dos Frades Basin - BA. For this, four campaigns were carried out, August / 2018, April, July and October / 2019, where they were analyzed, according to the Standard Methods, the total and dissolved solid parameters, salinity, conductivity, chloride, total and thermotolerant coliforms, turbidity, dissolved oxygen, biochemical oxygen demand (BOD), total phosphorus, total nitrogen, ammonia, nitrite, nitrate, dissolved phosphorus, pH, chlorophyll-a and temperature, and subsequently analyzed according to CONAMA resolution 357/2005. As for analysis of land use and vegetation cover and its correlation, the software QGIS and PAST were used. With the obtained results, if the parameters OD, pH and BOD were at odds with what is recommended by the legislation, due to the use and occupation of the soil without the monitoring of basic infrastructure. Multivariate analyzes showed different behaviors according to precipitation where the nitrogen series is correlated with the rainy season and turbidity with the dry season. Analysis of land use and occupation, revealed strong anthropic pressure suffered by the river, caused mainly by agriculture.Keywords: Rio dos Frades, Water Resources, Geographic Information System, River Basins

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“…Although agricultural lands are generally considered to exert a strong influence on nutrient concentrations in streams, relative to forest-dominated sites [75], detection of a response to land cover change sometimes cannot be observed until a threshold deforestation level in the watershed (66-75%) is reached [9]. Transformations of forest cover to large-scale agricultural practices is thought to have a long-lasting impact on stream nutrients, for example transitions from forest to pasture [17] or plantation-style crops [76].…”

Section: Swidden Land Cover Change and Nutrient Dynamicsmentioning

confidence: 99%

Seasonal Fluxes of Dissolved Nutrients in Streams of Catchments Dominated by Swidden Agriculture in the Maya Forest of Belize, Central America

Buck

Esselman

Jiang

et al. 2019

Water

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The biogeochemistry of nitrogen (N) and phosphorus (P) in tropical streams and rivers is strongly regulated by the pronounced seasonality of rainfall and associated changes in hydrology. Land use and land cover change (LULCC) can also be a dominant driver of changes in stream biogeochemistry yet responses are not fully understood and vary across different LULCC scenarios. We measured dissolved and total nitrogen (N) and phosphorus (P) concentrations in four tributary streams of the Temash River watershed in southern Belize, Central America. The dominant land use practice in each of the four study catchments was swidden agriculture. We documented a strong seasonal control on the export of nutrients from these study systems with daily N fluxes increasing approximately 10-fold during the onset of the rainy season. P fluxes increased almost 4-fold during the same time period. Comparisons with nutrient export coefficients from other tropical streams suggest that nutrient export in streams of the Temash River watershed is similar or slightly lower. Establishing improved understanding of the terrestrial and hydrologic controls of N and P transport across the terrestrial-aquatic boundary and developing a comprehensive nutrient budget that includes inputs and outputs associated with crop production is warranted in future work.

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Effects of land use and sampling distance on water quality in tropical headwater springs (Pimenta creek, São Paulo State, Brazil)

Cited by 41 publications

References 64 publications

Quality of Drinking Water from Springs in Palestine: West Bank as a Case Study

Quality of Drinking Water from Springs in Palestine: West Bank as a Case Study

Determinação da Qualidade da Água de um Rio Tropical sob a perspectiva do Uso do Solo e Cobertura Vegetal

Seasonal Fluxes of Dissolved Nutrients in Streams of Catchments Dominated by Swidden Agriculture in the Maya Forest of Belize, Central America

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