Effects of ashes from a Brazilian savanna wildfire on water, soil and biota: An ecotoxicological approach
| Autor: | Cesar Koppe Grisolia, Esther Lima de Carvalho, Maria Luiza Fascineli, Cintia Carla Niva, Mayara S. Guarieiro, Eduardo Cyrino Oliveira-Filho, Darlan Q. Brito, Zélia Malena Barreira Dias |
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| Rok vydání: | 2018 |
| Předmět: |
Environmental Engineering
010504 meteorology & atmospheric sciences media_common.quotation_subject Soil science 010501 environmental sciences Ecotoxicology complex mixtures 01 natural sciences Wildfires Soil Nutrient Soil pH parasitic diseases Animals Environmental Chemistry Biomphalaria glabrata Organic matter Subsurface flow Waste Management and Disposal 0105 earth and related environmental sciences media_common chemistry.chemical_classification biology Hatching Water Biota biology.organism_classification Grassland Pollution chemistry Environmental chemistry Environmental science Reproduction Brazil |
| Zdroj: | Science of The Total Environment. 618:101-111 |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2017.11.051 |
| Popis: | Wildfire is very common in Brazilian savannas, and its effects on water, soil and aquatic/soil organisms are poorly understood. In this study, we observed the effects of fire, especially of ashes, on surface soil and subsurface water in a typical Brazilian savanna (Cerrado sensu strictu) for one year. Soil analyses (pH, organic matter content, potential acidity, K, Ca, Mg and P) and subsurface water analyses (NO3-, PO43- Mg2+, Ca2+ and K+) were assessed. We evaluated the ecotoxicological effects of ashes on three different endpoints and species, in fish Danio rerio (embryonic development), aquatic snail Biomphalaria glabrata (reproduction) and a soil species Enchytraeus sp. (reproduction). We found a higher amount of exchangeable cations and organic matter content in short-term fire effects on soil, but the higher availability of nutrients did not affect the soil pH in field plots. The effects of ashes on soil and subsurface water did not persist for one-year post-fire, except for organic matter content in burned areas. No toxic effects were observed on hatching success and incidences of developmental abnormalities in D. rerio embryos. However, ash input had adverse effects on reproduction in snails and enchytraeids. We reported a statistically significant decrease in snail eggs exposed to the 50g.L-1 and 100g.L-1 of ashes after four weeks (p |
| Databáze: | OpenAIRE |
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