Influence of the residue from an iron mining dam in the growth of two macrophyte species

Bottino, Flávia; Milan, J. A. M.; Cunha-Santino, Marcela Bianchessi da; Bianchini, Irineu

doi:10.1016/j.chemosphere.2017.08.030

Cited by 32 publications

(11 citation statements)

References 27 publications

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“…The influence of human disturbances on macrophyte communities has also been increasingly studied in Brazil. For example, macrophytes communities responded to the impacts of agriculture (Ribeiro et al 2019, Forini et al 2020, mining (Mormul et al 2015, Bottino et al 2017 and the functioning of hydroelectric power plants (Thomaz et al 2006).…”

Section: Effects Of Environmental Factors On Macrophytesmentioning

confidence: 99%

Ecology of Aquatic Macrophytes in Brazil: The Legacy of Francisco De Assis Esteves

Thomaz¹,

Carvalho²,

Mormul³

et al. 2022

Oecol. Austr.

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In this review, we evaluate the contribution of Brazilian limnologists to research outputs on aquatic macrophyte ecology. We found a strong “adviser effect” of Professor F.A. Esteves on the Brazilian scientific production focused on aquatic macrophytes. In general, articles focused on a variety of themes, including, inter alia, the role of aquatic macrophytes on the biodiversity of other groups, the interaction between macrophytes and the environment, the effects of environmental factors on aquatic macrophytes distribution and biodiversity, the effects of invasive species on aquatic biodiversity, aquatic macrophytes control and decomposition. Emerging topics (e.g., metacommunity ecology, biodiversity-ecosystem functioning, and patterns of diversity and their determinants) are being embraced by Brazilian limnologists that use aquatic macrophytes as organism models. Despite the fact there is much to study, we think that directly (e.g., via mentoring) or indirectly (via publications), our current knowledge about macrophytes ecology was inspired by Chico Esteves.

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Section: Effects Of Environmental Factors On Macrophytesmentioning

confidence: 99%

Ecology of Aquatic Macrophytes in Brazil: The Legacy of Francisco De Assis Esteves

Thomaz¹,

Carvalho²,

Mormul³

et al. 2022

Oecol. Austr.

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“…Without the above-mentioned normalization, depending on water environmental conditions, the typical range of the intrinsic growth rate r for the benthic algae are O(10 −2 ) (1/day) to O(10 −1 ) (1/day) [12,14,78]. The parameter λ, which is here interpreted as the inverse of the mean interval of flood events such that a large part of the algae population would be flushed out, is O(10 −2 ) (1/day) to O(10 −1 ) (1/day) as well [78,79].…”

Section: An Application Problemmentioning

confidence: 99%

Stochastic control of single-species population dynamics model subject to jump ambiguity

Yoshioka

Tsujimura

2020

Journal of Biological Dynamics

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A logistic type stochastic control model for cost-effective singlespecies population management subject to an ambiguous jump intensity is presented based on the modern multiplier-robust formulation. The Hamilton-Jacobi-Bellman-Isaacs (HJBI) equation for finding the optimal control is then derived. Mathematical analysis of the HJBI equation from the viewpoint of viscosity solutions is carried out with an emphasis on the non-linear and non-local term, which is a key term arising due to the jump ambiguity. We show that this term can be efficiently handled in the framework of viscosity solutions by utilizing its monotonicity property. A numerical scheme to discretize the HJBI equation is presented as well. Our model is finally applied to management of algae population in river environment. Optimal management policies ranging from the short-term to long-term viewpoints are numerically investigated.

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“…Therefore, it is pertinent to analyze water samples from both rivers, with the main objective to evaluate the concentrations of major, minor and trace elements, as well as changes in physicochemical parameters of the rivers. These analyses could help to observe the ecosystem health and also as an indicator for local population health that consumes fish and uses the water from the affected rivers (Meche et al 2010;Bottino et al 2017). Thus, this study aims to evaluate physicochemical parameters and trace element concentrations in Carmo and Gualaxo do Norte Rivers to monitor the problems related to the Fundão dam three years after its rupture.…”

Section: Introductionmentioning

confidence: 99%

Water Quality From Gualaxo Do Norte And Carmo Rivers (Minas Gerais, Brazil) After The Fundão Dam Failure

et al. 2021

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Mining waste is rich in trace elements, which present a high toxic potential and may represent a risk for aquatic ecosystems. The Fundão dam failure, considered the largest environmental disaster in the world, affected 663.2 km of watercourses, including Carmo and Gualaxo do Norte Rivers. The ore tail also affected the riverside communities, destroying villages, killing people and affecting the subsistence farming. To evaluate the influence of the mine tailing wave on the water quality of the Carmo and Gualaxo do Norte Rivers water samples were collected at nine points located in Barra Longa during the rainy season. Physicochemical parameters (conductivity, resistivity, EH, total dissolved solids, pH and temperature) and major, minor and trace elements concentrations (Ba, Co, Cr, Cu, Ni, Sc, Sr, V, Zn, As, Pb, Al, Fe, Mn, Ca, K, Mg and P) were evaluated and compared with previous studies and conformity limits established by a national resolution (CONAMA Resolution N°357/2005). Only conductivity, Fe and Mn presented non-conformity values according to CONAMA Resolution N°357/2005. These results may be related not only to the dam burst but also to the rainy season and non-detectable pollution sources. Furthermore, the decreased levels in the toxic elements in the rivers over time, may be related to its association with sediments in addition to their flux to the Atlantic Ocean. Thus, after nearly six years, the environmental and social impacts are still alive and the minerals dragged to the riverbed could bring cumulative effects for the entire environment what means an uncertain future to the Rio Doce Basin and adjacent coastal zone.

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Influence of the residue from an iron mining dam in the growth of two macrophyte species

Cited by 32 publications

References 27 publications

Ecology of Aquatic Macrophytes in Brazil: The Legacy of Francisco De Assis Esteves

Ecology of Aquatic Macrophytes in Brazil: The Legacy of Francisco De Assis Esteves

Stochastic control of single-species population dynamics model subject to jump ambiguity

Water Quality From Gualaxo Do Norte And Carmo Rivers (Minas Gerais, Brazil) After The Fundão Dam Failure

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