Fire increases the productivity of sugarcane, but it also generates ashes that negatively affect native fish species in aquatic systems

Gonino, Gabriel Murilo Ribeiro; Figueiredo, Bruno R. S.; Manetta, Gislaine Iachstel; Alves, Gustavo Henrique Zaia; Benedito, Evanilde

doi:10.1016/j.scitotenv.2019.02.022

Cited by 27 publications

(22 citation statements)

References 50 publications

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“…A similar study by Brito et al (2017) tested toxicity over acute exposures (48 h) of three types of ash from the Brazilian Cerrado ecoregion on the planktonic crustacean Ceriodaphnia dubia, the fish Danio rerio and the mollusc Biomphalaria glabrata and found that all ash types caused toxicity to C. dubia, none affected B. glabrata and only one type was toxic for D. rerio. At higher trophic levels, negative impacts of Brazilian sugarcane ash have also been observed on several native fish species (Astyanax lacustris, Moenkhausia bonita and M. forestii) over 24-h acute exposures but not for two non-native fish species (Oreochromis niloticus and Poecilia reticulata) (Gonino et al 2019b). These studies demonstrate the variability and complexity of influencing factors in relation to the impacts of ash contamination on aquatic biota, highlighting the limited breadth of available research in this area (Hallema et al 2018).…”

Section: Introductionmentioning

confidence: 78%

Chemical composition of wildfire ash produced in contrasting ecosystems and its toxicity to Daphnia magna

Harper

Santín

Doerr

et al. 2019

Int. J. Wildland Fire

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It is well established in the world’s fire-prone regions that wildfires can considerably change the hydrological dynamics of freshwater catchments. Limited research, however, has focused on the potential impacts of wildfire ash toxicity on aquatic biota. Here, we assess the chemical composition and toxicity of ash generated from wildfires in six contrasting vegetation types distributed globally (UK grassland, Spanish pine forest, Spanish heathland, USA chaparral, Australian eucalypt forest and Canadian spruce forest). Acute (48h) immobilisation tests were conducted on the extensively studied aquatic macroinvertebrate Daphnia magna, a sensitive indicator of aquatic contaminants. We found significant differences between the chemical composition and toxicity of these ash types. The UK and Spanish ash had no detectable toxicity to Daphnia magna, whereas the Australian eucalypt, USA chaparral and Canadian spruce ash all caused significant toxicity (immobilisation). The principal characteristics of the latter ash types were their high pH, and NO3−, Cl− and conductivity levels. Elevated water-soluble and total concentrations of metals (e.g. Mn, Fe, Zn, Pb, Cu and As) and total polycyclic aromatic hydrocarbons (PAHs) were not linked to toxicity.

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Section: Introductionmentioning

confidence: 78%

Chemical composition of wildfire ash produced in contrasting ecosystems and its toxicity to Daphnia magna

Harper

Santín

Doerr

et al. 2019

Int. J. Wildland Fire

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“…The Southern region of Brazil has also experienced an increase in crop areas in the last decades, mainly sugarcane, corn, wheat, and soybean plantations, with direct impacts on the watersheds [16,17]. river region is mainly comprised of sandy soils with homogeneous grain sizes, originated from Caiuá Sandstone geological formation, and within the domains of the semi-deciduous forest, originating from the Atlantic rainforest [44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

A Fish-Based Index of Biotic Integrity for Neotropical Rainforest Sandy Soil Streams—Southern Brazil

Gonino

Benedito

Cionek

et al. 2020

Water

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Multimetric indices are considered a low-cost and rapid means of assessing ecological integrity in streams. This study aimed to develop a fish-based Index of Biotic Integrity (N3S-IBI) in an agricultural region within the domains of the Atlantic rainforest in Brazil. We sampled 23 first-order streams and used large-scale land use and a local physical condition index to choose reference sites and to classify sites according to the disturbance level. N3S-IBI resulted in six metrics (Simpson’s dominance; the numbers of Characiformes and non-native individuals (Poecilia reticulata); and the percentages of Characidae species, intolerant insectivorous individuals, and tolerant species), contemplating tolerance, composition, abundance, richness, trophic habits, and origin. The low number of metrics contributes to a quick and easy biomonitoring process. N3S-IBI showed an excellent performance to separate least and most disturbed sites in our study area and can provide additional knowledge about anthropogenic effects within this impacted region. In fact, this tool could be utilized by managers to direct restoration actions for the most disturbed sites and to strengthen the preservation of the least disturbed sites.

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“…No Brasil, as queimadas estão relacionadas ao desmatamento (DALDEGAN et al, 2019;GONINO et al, 2019). O fogo é um instrumento de manejo utilizado em aproximadamente 50% dos ecossistemas terrestres sendo de origem natural ou criminosa, podendo gerar grandes desastres ambientais (LIU et al, 2016;DINTWE et al, 2017;CLEMENTE et al, 2017;FORKEL et al, 2017).…”

Section: Introductionunclassified

Queimadas em áreas do Cerrado brasileiro

Júnior

Souza

Cedro

et al. 2020

RICA

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As queimadas têm causado prejuízos aos elementos da paisagem, destruição da fauna e flora, além da deterioração da fertilidade do solo. O objetivo do presente trabalho é a detecção e quantificação de extensas áreas atingidas por eventos de queimadas através de sensores óticos, verificando a reincidência de queimadas em localidades do Cerrado a partir de imagens de sensoriamento remoto. A área de estudo foi a microrregião de Barreiras-Bahia, que possui aproximadamente 53.000 km², sendo constituída por sete municípios: Barreiras, Luís Eduardo Magalhães, São Desidério, Formosa do Rio Preto, Riachão das Neves, Baianópolis e Catolândia. Para a realização do trabalho foram utilizados dados de foco de calor adquiridos no portal do Instituto Nacional de Pesquisas Espaciais (INPE), oriundos do satélite NOAA-19; e os dados de pluviometria foram disponibilizados pela Agência Nacional de Águas (ANA) e Instituto Nacional de Meteorologia (INMET). Para analisar a densidade dos focos de calor foi utilizado o método de densidade de Kernel, e foi analisada a sua relação com a precipitação entre 2015 a 2019. Com os dados referentes a precipitação anual média na microrregião de Barreiras, foi utilizado o método do Inverso da Distância Ponderada (IDW) para gerar mapas de índices pluviométricos. Conclui-se que quando comparadas as ocorrências de focos de calor com a média anual precipitada, em cada ano, é possível indicar que a quantidade de precipitação registrada na região, mesmo que de forma assimétrica, pode ter influenciado na ocorrência de focos de incêndio. Embora que quando comparadas a distribuição espacial dos focos de calor com a distribuição espacial da precipitação, não se observa clara relação entre ambos, já que a distribuição temporal da precipitação pode influenciar nesse processo, além da ocorrência de queimadas por práticas intencionais, acidentais ou criminosas.

show abstract

Fire increases the productivity of sugarcane, but it also generates ashes that negatively affect native fish species in aquatic systems

Cited by 27 publications

References 50 publications

Chemical composition of wildfire ash produced in contrasting ecosystems and its toxicity to Daphnia magna

Chemical composition of wildfire ash produced in contrasting ecosystems and its toxicity to Daphnia magna

A Fish-Based Index of Biotic Integrity for Neotropical Rainforest Sandy Soil Streams—Southern Brazil

Queimadas em áreas do Cerrado brasileiro

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