Avaliação Ecológica Rápida de qualidade de água no rio das Velhas

Callisto, Marcos; Macedo, Diego Rodrigues; Alves, Carlos Bernardo Mascarenhas; Golgher, André Braz; Agra, Janaina Uchôa Medeiros; Magalhães, Silvia Elicia Fragoso; Costa, Isabela S.

doi:10.5281/zenodo.5722097

Cited by 1 publication

(2 citation statements)

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“…Framework for Basic Sanitation (Law Project 4162/2019) assumes the goal of water supply and sewage treatment by 2033 (Callisto et al, 2021). Similarly, many rivers in central Mexico suffer from declines in water quality and desiccation which contribute to macroinvertebrate and fish population fragmentation and lead to lower MMI values (Mathuriau et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, untreated domestic sewage in urban areas is still an important source of degradation (Carvalho et al, 2017 ), favoring more resistant non‐native species to the detriment of native fishes (Carvalho et al, 2019 ). Indeed, 40% of Brazilian cities and 100 million citizens have no sewage collection or treatment and the New Regulatory Framework for Basic Sanitation (Law Project 4162/2019) assumes the goal of water supply and sewage treatment by 2033 (Callisto et al, 2021 ). Similarly, many rivers in central Mexico suffer from declines in water quality and desiccation which contribute to macroinvertebrate and fish population fragmentation and lead to lower MMI values (Mathuriau et al, 2011 ).…”

Section: Discussionmentioning

confidence: 99%

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Fish and macroinvertebrate assemblages reveal extensive degradation of the world's rivers

Feio

Hughes

Serra

et al. 2022

Global Change Biology

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Rivers suffer from multiple stressors acting simultaneously on their biota, but the consequences are poorly quantified at the global scale. We evaluated the biological condition of rivers globally, including the largest proportion of countries from the Global South published to date. We gathered macroinvertebrate‐ and fish‐based assessments from 72,275 and 37,676 sites, respectively, from 64 study regions across six continents and 45 nations. Because assessments were based on differing methods, different systems were consolidated into a 3‐class system: Good, Impaired, or Severely Impaired, following common guidelines. The proportion of sites in each class by study area was calculated and each region was assigned a Köppen‐Geiger climate type, Human Footprint score (addressing landscape alterations), Human Development Index (HDI) score (addressing social welfare), % rivers with good ambient water quality, % protected freshwater key biodiversity areas; and % of forest area net change rate. We found that 50% of macroinvertebrate sites and 42% of fish sites were in Good condition, whereas 21% and 29% were Severely Impaired, respectively. The poorest biological conditions occurred in Arid and Equatorial climates and the best conditions occurred in Snow climates. Severely Impaired conditions were associated (Pearson correlation coefficient) with higher HDI scores, poorer physico‐chemical water quality, and lower proportions of protected freshwater areas. Good biological conditions were associated with good water quality and increased forested areas. It is essential to implement statutory bioassessment programs in Asian, African, and South American countries, and continue them in Oceania, Europe, and North America. There is a need to invest in assessments based on fish, as there is less information globally and fish were strong indicators of degradation. Our study highlights a need to increase the extent and number of protected river catchments, preserve and restore natural forested areas in the catchments, treat wastewater discharges, and improve river connectivity.

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Section: Discussionmentioning

confidence: 99%