Quality of surface water related to land use: a case study in a catchment with small farms and intensive vegetable crop production in southern Brazil

Ribeiro, Karina Hacke; Favaretto, Nerilde; Dieckow, Jeferson; Souza, Luiz Cláudio de Paula; Minella, Jean Paolo Gomes; Almeida, Luciano de; Ramos, Michele Ribeiro

doi:10.1590/s0100-06832014000200030

Cited by 20 publications

(22 citation statements)

References 19 publications

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“…One of the main problems is the fact that the riparian vegetation in the study area is scarce or absent (Erechim, 2011). The presence of riparian forest is linked to water supply volume and quality (Ribeiro et al, 2014), and lack of vegetation could promote pollution.…”

Section: Discussionmentioning

confidence: 99%

Integrated analysis of water quality from two rivers used for public supply in southern Brazil

et al. 2017

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Aim This study aimed to evaluate the water quality of streams that are used for public supply, through an integrated analysis using a biotic index, as well as physicochemical and microbiological parameters. Methods The data were obtained monthly, from November 2014 to April 2015, at eight locations in two rivers in the south of Brazil. The landscape is predominantly rural, with the occurrence of small reforested areas, as well as yerba mate and grape cultivations. Macroinvertebrate samples were collected monthly using a Surber sampler. Water temperature and dissolved oxygen concentration were measured in the field using a portable oximeter. The following parameters were measured in the laboratory: pH, Turbidity, BOD, Conductivity and Nitrate. Results The evaluation carried out in the rivers revealed good water quality, but some sample sites presented reduced water quality. The waters of the Leãozinho River were classified as doubtful at site 1 and as good at sites 2, 3 and 4. Ligeirinho River presented an acceptable rating at sites 1 and 4 and was classified as good at sites 2 and 3. The BMWP’ index was significantly correlated with the abundance of macroinvertebrates, EPT richness and BOD. The abundance and richness of macroinvertebrates in Leãozinho and Ligeirinho Rivers were associated with the physical, chemical and microbiological parameters. Conclusion This study reinforces the importance of biomonitoring in the evaluation of water quality for human consumption, considering that environmental management and monitoring practices should integrate physicochemical, microbiological and biological parameters.

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Section: Discussionmentioning

confidence: 99%

Integrated analysis of water quality from two rivers used for public supply in southern Brazil

et al. 2017

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“…El ACP revela que los sitios influenciados por suelos agrícolas tienen una mayor carga de materia orgánica, al presentar los valores más altos de DBO 5 , color y coliformes, y la mayor concentración de nitratos, nitritos, nitrógeno amoniacal, nitrógeno total, ortofosfatos y fósforo total. Las zonas agrícolas suelen permitir una mayor erosión de suelos, lo que puede favorecer el ingreso de materia orgánica de la cuenca de captación y, como consecuencia, incrementar la DBO 5 y los nutrientes en el curso de los ríos, como lo han detectado Egler et al, (2012) y Ribeiro et al (2014); además, en este estudio, debido a que se incorporó a las zonas pecuarias dentro de la zonas agrícolas, el aumento de coliformes en éstas puede atribuirse a la actividad pecuaria. Por otra parte, los sitios con influencia urbana presentaron mayor conductividad, alcalinidad, dureza y concentración de cloruros.…”

Section: Discussionunclassified

Aquatic macroinvertebrates assemblages related to diverse land uses in the Apatlaco and Chalma-Tembembe rivers (Balsas basin), Mexico

2016

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Ensambles de macroinvertebrados acuáticos relacionados con diversos usos del suelo en los ríos Apatlaco y Chalma-Tembembe (cuenca del Río Balsas), MéxicoAquatic macroinvertebrates assemblages related to diverse land uses in the Apatlaco and Chalma-Tembembe rivers (Balsas basin), MexicoRecibido: 05 de noviembre de 2015. Aceptado: 13 de mayo de 2016. Ruiz-Picos R. A., J. E. Sedeño-Díaz y E. López-López. 2016. Ensambles de macroinvertebrados acuáticos relacionados con diversos usos del suelo en los ríos Apatlaco y Chalma-Tembembe (cuenca del Río Balsas), México. Hidrobiológica 26 (3): 443-458. RESUMENAntecedentes. Los ríos son considerados sistemas integradores que reflejan los procesos físicoquímicos y biológicos que se llevan a cabo en su cuenca de captación y presentan un flujo constante de materia y energía. Esto se debe a su conectividad y a las interacciones con su cuenca de captación y la atmósfera. Los ríos Apatlaco y Chalma-Tembembe (Cuenca del Río Balsas) presentan diferentes grados de perturbación, ocasionados por los cambios en el uso del suelo (US) en sus cuencas de captación. Objetivos. Analizar las relaciones que guardan las características físico-químicas del agua y los ensambles de invertebrados acuáticos (IA) con los distintos US adyacentes a los ríos Apatlaco y Chalma-Tembembe. Metodos. En ambos ríos, se tomaron muestras de agua (20 sitios) y de IA, durante cuatro temporadas, y se determinó el porcentaje de US correspondiente a su área de influencia. Se realizaron análisis de ordenación, similitud y de correlación de Pearson (p < 0.05), con los parámetros fisicoquímicos, biológicos y el US. Resultados. El río Apatlaco presentó mayor perturbación debido a la combinación de US, con alto porcentaje de uso urbano; y el Chalma-Tembembe mostró características fisicoquímicas y biológicas más homogéneas. Conclusiones. Se detectaron algunos ensambles de familias de macroinvertebrados correlacionados con ecosistemas sanos, (Belostomatidae, Cordulegastridae, Corixidae, Corydalidae, Dryopidae, Elmidae, Hebridae, Helicopsychidae, Heptageniidae, Hydrobiosidae, Lepidostomatidae, Libellulidae, Perlidae, Philopotamidae, Polycentropodidae, Scirtidae, Staphilinidae y Tabanidae); con ambientes altamente perturbados (Ancylidae, Asellidae, Chironomidae, Hyalellidae, Psychodidae y Clase Hirudinea); y los sitios impactados por actividades agrícolas se correlacionaron con abundancias moderadas y baja diversidad de IA.Palabras clave: Bioindicación, cuenca de captación, invertebrados acuáticos, ríos tropicales, uso del suelo. ABSTRACTBackground. Rivers are considered as integrators systems reflecting physicochemical and biological processes that take place in its catchment area and have a constant flow of matter and energy. This is due to its connectivity and interactions with its watershed and the atmosphere. The Apatlaco and Chalma-Tembembe rivers (Balsas River basin) have different levels of disturbance, caused by changes in land use (US) in its watershed. Goals. To analyze the relationships of the physico-chemical chara...

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“…Furthermore, there are reasons to believe that the current agricultural practice in the E watershed can significantly modify the ion balance at all channel orders and therefore affect the Sp.C (e.g., [61]). The very high Sp.C values measured prior to breakup (e.g., Figure 6 at Site E2) are particularly intriguing.…”

Section: Conductivitymentioning

confidence: 99%

The Winter Environmental Continuum of Two Watersheds

Turcotte

Morse

2017

Water

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This paper examines the winter ecosystemic behavior of two distinct watersheds. In cold-temperate regions, the hydrological signal and environmental parameters can fluctuate dramatically over short periods of time, causing major impacts to aquatic habitats. This paper presents the results of the 2011-2012 winter field campaign in streams and rivers near Quebec City, QC, Canada. The objective was to quantify water quantity and quality parameters and their environmental connectivity from headwater creeks above to the larger rivers below over the entire freeze-up, midwinter and breakup periods with a view toward exploring the watershed continuum. The paper presents how aquatic pulses (water level, discharge, temperature, conductivity, dissolved oxygen and turbidity, measured at seven sites on an hourly basis along channels of different sizes and orders) evolve through the aquatic environment. Ice conditions and the areal ice coverage were also evaluated (on a daily time step along each instrumented channel). Some findings of the investigation revealed that water temperatures remained well above 0 • C during winter in headwater channels, that dissolved oxygen levels during winter were relatively high, but with severe depletions prior to and during breakup in specific settings, that high conductivity spikes occurred during runoff events, that annual turbidity extremes were measured in the presence of ice and that dynamic ice cover breakup events have the potential to generate direct or indirect mortality among aquatic species and to dislodge the largest rocks in the channel. The authors believe that the environmental impact of a number of winter fluvial processes needs to be further investigated, and the relative significance of the winter period in the annual environmental cycle should be given additional attention.

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Quality of surface water related to land use: a case study in a catchment with small farms and intensive vegetable crop production in southern Brazil

Cited by 20 publications

References 19 publications

Integrated analysis of water quality from two rivers used for public supply in southern Brazil

Integrated analysis of water quality from two rivers used for public supply in southern Brazil

Aquatic macroinvertebrates assemblages related to diverse land uses in the Apatlaco and Chalma-Tembembe rivers (Balsas basin), Mexico

The Winter Environmental Continuum of Two Watersheds

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