Diagnóstico de la calidad de las aguas superficiales en la región de Los Altos Norte de Jalisco, México

Villanueva, Aldo Antonio Castañeda; López, Hugo Ernesto Flores; Cuevas-Villanueva, Ruth Alfaro

doi:10.15174/au.2018.1843

Cited by 2 publications

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“…On the other hand, in a few subbasins rainfall had a dilution effect due to an increase of water levels, where nutrient wash-off was not significant [18]. A higher wash-off effect indicates that there is a strong anthropogenic impact, mainly due to livestock, agricultural, and industrial activities, in the development of eutrophication in most subbasins, as suggested by several authors [19,20,56]. The correlation analysis showed that significant correlations (p < 0.05), suggesting nutrient wash-off, were often located in areas with strong primary and industrial activities.…”

Section: Precipitationmentioning

confidence: 99%

“…The Verde and Santiago Rivers' poor water quality and risk of eutrophication have been extensively documented [20,31]. The main causes of eutrophication in these regions include excessive nutrient loads due to the massive livestock populations, lack of regulation in fertilizer use for agriculture, and inefficient wastewater treatment programs [20,55,56]. Additionally, the Verde River-Santa Rosa Dam subbasin is located north of the Guadalajara Metropolitan Area, which has one of the highest human settlement proportions in the region.…”

Section: Average Tsimentioning

confidence: 99%

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A GIS Methodology to Determine the Critical Regions for Mitigating Eutrophication in Large Territories: The Case of Jalisco, Mexico

et al. 2021

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Inadequate management practices for solid waste and wastewater are some of the main causes of eutrophication globally, especially in regions where intensive livestock, agricultural, and industrial activities are coupled with inexistent or ineffective waste and wastewater treatment infrastructure. In this study, a methodological approach is presented to spatially assess the trophic state of large territories based on public water quality databases. The trophic state index (TSI) includes total nitrogen, total phosphorus, chlorophyll A, chemical oxygen demand, and Secchi disk depth values as water quality indicators. A geographical information system (GIS) was used to manage the spatiotemporal attributes of the water quality data, in addition to spatially displaying the results of TSI calculations. As a case study, this methodological approach was applied to determine the critical regions for mitigating eutrophication in the state of Jalisco, Mexico. Although a decreasing trend was observed for the TSI values over time for most subbasins (2012–2019), a tendency for extreme hypereutrophication was observed in some regions, such as the Guadalajara metropolitan area and the Altos region, which are of high economic relevance at the state level. A correlation analysis was performed between the TSI parameters and rainfall measurements for all subbasins under analysis, which suggested a tendency for nutrient wash-off during the rainy seasons for most subbasins; however, further research is needed to quantify the real impacts of rainfall by including other variables such as elevation and slope. The relationships between the water quality indicators and land cover were also explored. The GIS methodology proposed in this study can be used to spatially assess the trophic state of large regions over time, taking advantage of available water quality databases. This will enable the efficient development and implementation of public policies to assess and mitigate the eutrophication of water sources, as well as the efficient allocation of resources for critical regions. Further studies should focus on applying integrated approaches combining on-site monitoring data, remote sensing data, and machine learning algorithms to spatially evaluate the trophic state of territories.

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Section: Precipitationmentioning

confidence: 99%

Section: Average Tsimentioning

confidence: 99%

A GIS Methodology to Determine the Critical Regions for Mitigating Eutrophication in Large Territories: The Case of Jalisco, Mexico

et al. 2021

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Trajectory of public private associations. Case: wastewater treatment plant "Agua Prieta" - Jalisco

MORENO-ORTIZ,,

ZABALA-PINEDA,

AGUILAR-JUÁREZ

2023

EJM

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Objectives: Public-private associations (PPPs), for the government sector, an opportunity to take advantage of the experience and efficiency of the private sector to improve the representation of services and develop the necessary infrastructures for economic and social development. PPPs generally involve large-scale projects, but unfortunately some sectors, such as water management, exclude the opinion of experts, giving rise to monopolies that greatly benefit the private sector, even excluding them from responsibilities by not fully resolving the problem for which they were created. contracted, the costs being absorbed by the public sector. Methodology: Confirming the success of PPP participation in works still in operation is premature, but an analysis of the current results is made, taking as a case study, the "Agua Prieta" Wastewater Treatment Plant (PTAR). Contribution: The results show that the collaboration of community groups in carrying out a participatory diagnosis and having follow-up and evaluation mechanisms to monitor the performance of the private partner, are actions that further improve the chances of success of the project; On the other hand, competition and the adequate selection of private partners represent the biggest failure factor in the implementation of PPPs.

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Diagnóstico de la calidad de las aguas superficiales en la región de Los Altos Norte de Jalisco, México

Cited by 2 publications

References 0 publications

A GIS Methodology to Determine the Critical Regions for Mitigating Eutrophication in Large Territories: The Case of Jalisco, Mexico

A GIS Methodology to Determine the Critical Regions for Mitigating Eutrophication in Large Territories: The Case of Jalisco, Mexico

Trajectory of public private associations. Case: wastewater treatment plant "Agua Prieta" - Jalisco

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