Impact of rapid urbanization on stream water quality in the Brazilian Amazon

Ferreira, Sávio José Filgueiras; Pinel, Sébastien; Ríos‐Villamizar, Eduardo Antonio; Miranda, Sebastião Átila Fonseca; Pascoaloto, Domitila; Vital, Ana Rosa Tundis; Monteiro, Maria Terezinha Ferreira; Silva, Maria do Socorro Rocha da; Cunha, Thaís Rivera Brandão da; Santos, Almir Salgado dos; Bender, Steffen; Cunha, Hillândia Brandão da

doi:10.1007/s12665-021-09621-7

Cited by 24 publications

(5 citation statements)

References 43 publications

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“…Furthermore, projections suggest that by 2050, pastures and agricultural expansion could cover 40% of the entire Amazon region (Soares-Filho et al, 2006), potentially increasing nutrient loads to waterways. Urban expansion facilitated by dams and agro-industrial operations has also contributed to nutrient increases in Amazonian rivers due to untreated sewage (Ferreira et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Impact of Run-of-River Damming on Increasing Phytoplankton Biomass and Species Shift in a Large Amazonian River: Ecological Implications and Recommendations

Pineda,

Campos,

Zanon

et al. 2024

Preprint

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Run-of-river (ROR) dams, often perceived as having minimal environmental impact, can induce significant hydrodynamic changes that alter aquatic ecosystems. We investigated the impacts of an ROR dam on the Madeira River, the largest Amazon tributary, focusing on phytoplankton communities and their ecological implications. Our study examined changes in biomass and species composition before and after damming as well as their drivers in both the main channel and tributaries (N=549 samples). Following dam construction, we observed a shift in the phytoplankton community from lotic diatoms to lentic phytoflagellates. This transition was likely facilitated by altered hydrodynamics and possibly influenced by the decomposition of flooded vegetation in the dam’s influence zone. The decomposition of this vegetation could explain both the observed increase in oxygen consumption and the subsequent rise in phytoflagellate biomass after damming. On the other hand, despite an overall increase in phytoplankton biomass, the values remained within oligo- and mesotrophic conditions, which related to the low nutrient concentrations observed. However, we caution that the dam-created hydrodynamic conditions are optimal for phytoplankton growth, potentially exacerbating nutrient-related issues in the future. We recommend proactive management strategies to prevent nutrient enrichment from agricultural and livestock activities in isolated Amazon areas affected by dams, thereby mitigating potential water quality degradation linked to phytoplankton biomass increase.HighlightsROR dams can significantly alter aquatic ecosystems and hydrodynamic conditions.Post-dam, phytoplankton shifted from lotic diatoms to lentic phytoflagellates.Decomposing flooded vegetation likely increased phytoflagellate biomass.Phytoplankton biomass increased but remained within oligo- and mesotrophic levels.Proactive management is needed to prevent future nutrient enrichment issues.Graphical abstract

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Section: Discussionmentioning

confidence: 99%

Impact of Run-of-River Damming on Increasing Phytoplankton Biomass and Species Shift in a Large Amazonian River: Ecological Implications and Recommendations

Pineda,

Campos,

Zanon

et al. 2024

Preprint

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“…Juína is one of the planned cities in an area of recent occupation in the State of Mato Grosso, Brazil (Gomes and Santos 2001), being founded in 1979. Currently, the municipality of Juína has a population of 41,190 and a population density of 1.50 inhabitants km − 2 , of which approximately 87% live in urban areas, whereas 13% live in rural areas. The current population growth rate is 0.68%, which has been increasing since early 2000s (IBGE 2021).…”

Section: Study Areamentioning

confidence: 99%

“…aquatic and terrestrial insects, birds, bats) and It is important to consider that public management strategies of greenspaces in Amazon cities are failing to establish appropriate practices that incorporate the spatial urban growth and their effects for the maintenance of biodiversity (Martins et al 2017;Soares et al 2021). Understanding the impacts resulting from the urbanization of Amazon becomes urgent, both to preserve biodiversity and associated ecosystem functions and services (Tritsch and Le Tourneau 2016; Ferreira et al 2021).…”

Section: Introductionmentioning

confidence: 99%

From green to grey: Unravelling the role of urbanization on diversity of dung beetles in an Amazonian landscape

Correa,

Salomão,

Alvarado

et al. 2023

Urban Ecosyst

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The Brazilian Amazon has undergone an intense process of urbanization responsible for changes in the land use and land cover patterns in the last decades. Therefore, understanding the impacts resulting from the urbanization of Amazon become urgent, both to preserve biodiversity and associated ecosystem functions and services, since Amazon region comprise a key ecosystem regarding biodiversity and ecological dynamics. We studied, for the rst time, the impact of urbanization on dung beetles, a recognized bioindicator group, in Amazonian landscapes. For this, we assessed the dung beetle taxonomic and functional responses along a preserved-rural-urban habitat gradient in an Amazonian city, and how landscape predictors affect dung beetle diversity. We found a consistent shift in species composition and reduction of both taxonomic and functional diversity from forest patches located outside the city towards those located in the city core. In addition, forest cover was the main driver of dung beetle responses at the landscape scale, where the increase of forest cover positively affected dung beetle diversity. Our results provide evidence that urbanization negatively impacts the dung beetle taxonomic and functional diversity in Amazonian cities, and reinforce the importance of maintaining forest cover to conserve dung beetles in tropical forests. Finally, the development of sustainable initiatives for the conservation of biodiversity in urban landscapes, such as public policies aimed at the maintenance of urban forest fragments, can help to maintain biodiversity and ecosystem processes within cities and to mitigate the urbanization impacts.

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“…Ancestral practices of pre-Columbian indigenous peoples consisted of burying waste generated in the soil, promoting the anthropogenic enrichment of its fertility, and giving rise to Black Earth, lands with a high concentration of phosphorus and organic matter (Orozco-Ortiz et al, 2021). However, the expansion of human occupation in the Amazon indigenous lands through mining (Salomão et al, 2023), agriculture and livestock (Riquetti et al, 2023), logging (Lapola et al, 2023), tourism (Peredo & Wurzelmann, 2015, Maldonado-Erazo et al, 2023 and urbanization Research, Society and Development, v. 12, n. 14, e88121444612, 2023 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v12i14.44612 3 (Ferreira et al, 2021 have influenced human vulnerability and environmental systems, through the increase in the generation of dry waste such as plastic, paper, metal and glass (Jaramillo et al, 2023, Vélez et al, 2019, batteries and chemical waste (Sanches et al, 2021), and waste from health services (Aleixo & Braga, 2022).…”

Section: Introductionmentioning

confidence: 99%

Impact of collection from indigenous lands on the municipal solid waste management system: A case study in the Amazon

Menichelli,

Oliveira,

Medeiros

2023

RSD

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In the Amazon, solid waste collection is generally restricted to urban areas, excluding indigenous lands and rural areas. The objective of this research was to analyse the impact of collecting waste generated from indigenous lands on the municipal solid waste (MSW) management system, through life cycle assessment (LCA). A case study in the Humaitá city, state of Amazonas, Brazil, was based on life cycle inventory data, obtained from literature and field surveys, such as the waste gravimetry. The LCA followed the model proposed by ISO 14040 and 14044 and estimated greenhouse gas (GHG) emissions for three MSW management scenarios. The first, called Base Scenario (SB), corresponded to that practiced in Humaitá: collection of MSW from the urban area, logistic, and disposal in landfill. The second scenario (S1) corresponded to SB and the collection of waste generated on indigenous lands in that municipality. The third scenario (S2) corresponded to S1, excluding organic waste, which would be destined for composting on indigenous lands. The base scenario totalled an emission of 1,539 t CO2eq.year-1. Collecting solid waste from indigenous lands would increase these GHG emissions by 5.2% (S1) and 0.9% (S2) in relation to SB. The decentralized management of organic waste through composting associated with the separation and storage of dry waste would reduce the burning of waste in indigenous areas, their environmental vulnerability and promote the inclusion of these peoples.

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Impact of rapid urbanization on stream water quality in the Brazilian Amazon

Cited by 24 publications

References 43 publications

Impact of Run-of-River Damming on Increasing Phytoplankton Biomass and Species Shift in a Large Amazonian River: Ecological Implications and Recommendations

Impact of Run-of-River Damming on Increasing Phytoplankton Biomass and Species Shift in a Large Amazonian River: Ecological Implications and Recommendations

From green to grey: Unravelling the role of urbanization on diversity of dung beetles in an Amazonian landscape

Impact of collection from indigenous lands on the municipal solid waste management system: A case study in the Amazon

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