Spatio-temporal changes in water quality in the Guarapiranga reservoir (São Paulo, Brazil): insights from a long-term monitoring data series

Semensatto, Décio; Labuto, Geórgia; Zorzal-Almeida, Stéfano; McRae, Douglas

doi:10.1007/s10661-021-09167-y

Cited by 7 publications

(2 citation statements)

References 34 publications

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“…Such situations show that the economic concern that marked the urban development of the 20th century was not accompanied with the same rigor for socio-environmental concerns, since dealing with high population density, precarious conditions of basic sanitation and poor health conditions occurred in this period [49].…”

Section: History Of the Increase In Pas Socio-environmental Aspects A...mentioning

confidence: 99%

Urban Forests, Territorial Planning and Political Stability: Key Factors to Face Climate Change in a Megacity

et al. 2023

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Megacities across the planet face a range of economic and territorial challenges. Future climate predictions suggest that several urban areas will present greater social and environmental problems in the coming decades, which makes strategic planning urgent and necessary for sustainable adaptation in all senses, i.e., economic, social and environmental. Some cities in the global south, such as Sao Paulo, had a history of rapid urban development without environmental planning throughout the 20th century, making urgent the need to expand green infrastructure, especially with the connection of forest fragments to the urban fabric. Therefore, this study aimed (i) to evaluate the increase in official urban parks throughout history, considering the spatialization and typologies of new parks in the territory of Sao Paulo, (ii) to understand the ecosystem services provided by urban forests and its distribution in the city, and (iii) to associate the temporal stability attributes of recent environmental secretaries with the officialization of protected areas in the city of Sao Paulo. The results revealed that only at the beginning of the 21st century was there an effective increase in the number of protected areas that shelter fragments of urban forests, contrasting the strong socio-spatial segregation that occurred in the 20th century with an economically vulnerable population that occupied peripheral areas with greater natural disaster risk. Political stability was a key factor for success in the environmental management of a megacity. The scenarios of environmental injustice reported in this manuscript can be revised with the implementation of policies and actions aimed at expanding green infrastructure in strategic sites, based on specific park typologies for each location. Such actions may come from public–private partnerships (PPP) that subsidize the socio-environmental transformation of the territory.

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Section: History Of the Increase In Pas Socio-environmental Aspects A...mentioning

confidence: 99%

Urban Forests, Territorial Planning and Political Stability: Key Factors to Face Climate Change in a Megacity

et al. 2023

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“…Hydropower is a significant source of renewable electricity, with a share of 16%–17% of the total world electricity generation (Killingtveit, 2019), and currently it is the main renewable energy source in most countries in Asia (Vaidya et al, 2021; Li, Chen et al, 2018), Europe (Alsaleh & Abdul-Rahim, 2021, 2022), Africa (Gyimah et al, 2021; Woldeab et al, 2018), and South America (de Oliveira et al, 2021; Semensatto et al, 2021). Furthermore, future hydropower development is primarily concentrated in developing countries and emerging economies of Southeast Asia, South America, and Africa, also with the Balkans, Anatolia, and the Caucasus being additional centers of future dam construction (Zarfl et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

On the Spatial-Temporal Behavior, and on the Relationship Between Water Quality and Hydrometeorological Information to Predict Dissolved Oxygen in Tropical Reservoirs. Case Study: La Miel, Hydropower Dam

Juliana-Andrea

Cesar

Alberto

et al. 2023

Air, Soil and Water Research

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Hydropower is currently one of the leading renewable energy sources in developing countries. Despite the benefits that it can provide, it also triggers significant environmental impacts, such as changes in the reservoirs’ water quality. In quantifying those changes, dissolved oxygen (DO) is used as one of the water quality indicators and is the most used variable to quantify water quality and analyze water pollution. This paper aims to establish a relationship between water quality and hydrometeorological variables in tropical reservoirs to better estimate dissolved oxygen. Univariate and multivariate techniques were used to analyze temporal and spatial changes in watersheds to better select vital variables for the forecast model, such as Vector Autoregression (VAR). The results show that, for all monitoring stations, the water quality variables associated with the DO process are COD, BOD, and PO₄. Likewise, precipitation and flow discharge were the hydrometeorological parameters that had the most significant impact on DO. Also, the principal component analysis (PCA) allowed us to identify that the strength of the relationships between water quality and hydrometeorology changes depending on the location of the monitoring site. Finally, the implementation of a VAR model showed good performance metrics for dissolved oxygen predictions based on all analyses.

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Analysis of indicators of surface water pollution in Atlantic Forest preservation areas

Costa

Almeida

Fenerick

et al. 2022

Environ Monit Assess

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Spatio-temporal changes in water quality in the Guarapiranga reservoir (São Paulo, Brazil): insights from a long-term monitoring data series

Cited by 7 publications

References 34 publications

Urban Forests, Territorial Planning and Political Stability: Key Factors to Face Climate Change in a Megacity

Urban Forests, Territorial Planning and Political Stability: Key Factors to Face Climate Change in a Megacity

On the Spatial-Temporal Behavior, and on the Relationship Between Water Quality and Hydrometeorological Information to Predict Dissolved Oxygen in Tropical Reservoirs. Case Study: La Miel, Hydropower Dam

Analysis of indicators of surface water pollution in Atlantic Forest preservation areas

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