Water Quality

Pastén, Pablo; Vega, Alejandra S.; Lizama, Katherine; Guerra, Paula; Pìzarro, Jaime

doi:10.1007/978-3-030-56901-3_10

Cited by 6 publications

(12 citation statements)

References 16 publications

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“…The effects of nutrient pollution on riverine fish assemblages have been widely studied (e.g., [73][74][75]). Concentrations registered in Chilean rivers remain low compared to other rivers, but the natural oligotrophic state of southern Chilean rivers makes them highly sensitive to nutrient concentration increase [6]. Already in 2010, a significant (up to six-fold) increase of concentrations of nitrate was registered in the Biobío and Valdivia rivers [76].…”

Section: Discussionmentioning

confidence: 99%

“…Already in 2010, a significant (up to six-fold) increase of concentrations of nitrate was registered in the Biobío and Valdivia rivers [76]. These significant increases of nutrient concentrations are expected to continue and affect riverine biota, including fish [6]. The sensitivity of species-poor riverine biota that inhabits these rivers to pollution could have been clearly evidenced in 2004 in the Cruces River (tributary of the Valdivia River) which has undergone ecosystem collapse due to nutrient pollution and water quality decreasing as consequence of inefficient operation of a pulp-mill plant [44].…”

Section: Discussionmentioning

confidence: 99%

“…This discharge decrease, in turn, will exacerbate effects of other stressors (e.g., water pollution) by directly increasing concentrations of pollutants [5]. Furthermore, whereas examples of effective management of freshwater ecosystems that are focused on improvement of water quality in all freshwater ecosystems are available (e.g., European Union policies), in Chile and Latin America environmental public policies are still often inefficient to ensure good ecological status and effective management of freshwater ecosystems [6]. As a consequence, accelerated deterioration of water and its ecological qualities are currently evidenced in multiple river basins across Chile [5].…”

Section: Introductionmentioning

confidence: 99%

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Taxonomic and Functional Responses of Species-Poor Riverine Fish Assemblages to the Interplay of Human-Induced Stressors

Colin

Habit

Manosalva

et al. 2022

Water

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The effects of human-induced stressors on riverine fish assemblages are still poorly understood, especially in species-poor assemblages such as those of temperate South American rivers. In this study we evaluated the effects of human-induced stressors on the taxonomic and functional facets of fish assemblages of two central-southern Chilean rivers: the Biobío River (flow regulated by multiple dams) and the Valdivia River (free-flowing). The study design considered reference condition, urban polluted, and urban-industrial polluted sites. To evaluate the effects of stressors on fish assemblages we assessed: (i) components of beta diversity; (ii) spatial and temporal patterns of fish structure using a multivariate approach; and (iii) functional diversity (specialization, originality, dispersion, and entropy) using linear models. We found a strong association between taxonomic and functional fish assemblage facets with a predominance of natural processes in the Valdivia River reflected in marked temporal dynamics. In contrast, the Biobío River showed a clear loss of association with seasonal pattern, and both taxonomic and functional facets appeared to respond significantly to pollution zones. Implementation of stricter environmental policies and integrated river basin management are instrumental for conserving species-poor fish assemblages in Chilean temperate rivers characterized by low functional traits redundancy.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Taxonomic and Functional Responses of Species-Poor Riverine Fish Assemblages to the Interplay of Human-Induced Stressors

Colin

Habit

Manosalva

et al. 2022

Water

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“… High turbidity events impact the operation of the drinking water supply systems [ 86 , 87 ]. High concentrations of metals and metalloids in rivers of northern-central zones [ 88 ] and groundwaters [ 21 ]. Causes Climate change: lack of precipitation and drought [ 89 ].…”

Section: Materials: a Literature Review Of The Challenges For Sustain...mentioning

confidence: 99%

“…Chile is a country transitioning toward the challenges of sustainability and resilience within a context defined by several attributes linked to its landscape. A variety of different geo-climatic settings across latitudes and longitudes take place, with strong gradients of climate variables, a diversity of geomorphologic and geochemical driving forces, and the presence of large geophysical features including the Andes, the Pacific Ocean, and the Atacama Desert in the north [ [18] , [19] , [20] , [21] ]. Despite its strong natural variability, administrative decision-making in Chile is centralized, with regional offices and agencies of centralized institutions having more power than local governments [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Toward sustainability and resilience in Chilean cities: Lessons and recommendations for air, water, and soil issues

François

Gironás

Rivera

et al. 2023

Heliyon

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Evaluation of surface water quality in basins of the Chilean Altiplano-Puna and implications for water treatment and monitoring

Lizama-Allende

Rámila²,

Leiva

et al. 2022

Environ Monit Assess

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Water quality characterization and assessment are key to protecting human health and ecosystems, especially in arid areas such as northern Chile, where water resources are scarce and rich in pollutants. The objective of this study was to review and assess available official water quality data in the Chilean Altiplano-Puna basins for a 10-year period (2008–2018), including water treatment systems. Within the 43,600 km 2 of Chilean Altiplano-Puna territory, only 16 official water quality monitoring stations had up-to-date data, and the sampling frequency was less than 3 per year. Most of the water samples collected at the evaluated stations exceeded the drinking and irrigation water Chilean standards for arsenic, boron, and electrical conductivity. Moreover, the characteristics of the Altiplano-Puna affect water quality inside and beyond the area, limiting water usage throughout the Altiplano-Puna basins. Drinking water treatment plants exist in urban and rural settlements; however, the drinking water supply in rural locations is limited due to the lack of adequate treatment and continuity of service. Wastewater treatment plants operate in some urban locations but rarely exist in rural locations. Limited data impede the proper assessment of water quality and thus the evaluation of the need for treatment systems. As such, the implementation of public policies that prioritize water with appropriate quantity and quality for local communities and ecosystems is imperative. Supplementary Information The online version contains supplementary material available at 10.1007/s10661-022-10628-1.

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Water Quality

Cited by 6 publications

References 16 publications

Taxonomic and Functional Responses of Species-Poor Riverine Fish Assemblages to the Interplay of Human-Induced Stressors

Taxonomic and Functional Responses of Species-Poor Riverine Fish Assemblages to the Interplay of Human-Induced Stressors

Toward sustainability and resilience in Chilean cities: Lessons and recommendations for air, water, and soil issues

Evaluation of surface water quality in basins of the Chilean Altiplano-Puna and implications for water treatment and monitoring

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