Rainstorm events trigger algal blooms in a large oligotrophic reservoir

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 622, P. 129711 - 129711

Published: May 25, 2023

Language: Английский

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Macroinvertebrate functional feeding group alterations in response to habitat degradation of headwater Austral streams

The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 695, P. 133910 - 133910

Published: Aug. 14, 2019

Language: Английский

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A structural equation model to predict macroinvertebrate-based ecological status in catchments influenced by anthropogenic pressures

The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 681, P. 242 - 257

Published: May 11, 2019

Language: Английский

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The consequences for stream water quality of long-term changes in landscape patterns: Implications for land use management and policies

Land Use Policy, Journal Year: 2021, Volume and Issue: 109, P. 105679 - 105679

Published: Aug. 7, 2021

Language: Английский

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Effects of both climate change and human water demand on a highly threatened damselfly

Scientific Reports, Journal Year: 2021, Volume and Issue: 11(1)

Published: April 8, 2021

Abstract While climate change severely affects some aquatic ecosystems, it may also interact with anthropogenic factors and exacerbate their impact. In dry climates, dams can cause hydrological drought during periods following a great reduction in dam water discharge. However, impact of these severe droughts on lotic fauna is poorly documented, despite expected to increase duration intensity. We document here how discharge was affected by variability 2011–2018 highly modified watershed northeastern Algeria, an endemic endangered damselfly, Calopteryx exul Selys, 1853 (Odonata: Calopterygidae), responded episodes. Analysis based compilation data (temperature, precipitation, index), management (water depth volume frequency), survey C. occurrence, capture–mark–recapture (CMR) adults. The study period characterized between 2014 2017, which led lowering into the river, associated changes chemistry, particularly 2017 2018. These events could have extirpation several populations Seybouse River (Algeria). CMR surveys showed that species sensitive fluctuations, avoiding low high levels (drought flooding). shows interacts human requirements river flow regimes, chemistry fauna. As are likely future, current highlights need for urgent new plans habitats maintain this possible others.

Language: Английский

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A partial least squares-path model of causality among environmental deterioration indicators in the dry period of Paraopeba River after the rupture of B1 tailings dam in Brumadinho (Minas Gerais, Brazil)

Environmental Pollution, Journal Year: 2022, Volume and Issue: 306, P. 119341 - 119341

Published: April 22, 2022

This study investigated the collapse of B1 mine-tailings dam that occurred in 25 January 2019 and severely affected Brumadinho region (Minas Gerais state, Brazil) socially, economically environmentally. As regards water resources, event impacted Paraopeba River first 155.3 km counted from site, meaning nearly half main course downstream B1. In sector, high concentrations tailings-related Al, Fe, Mn, P river sediment-tailings mixtures were detected, as well changes to reflectance riparian forests. water, metal raised significantly above safe levels. For caution, management authorities declared immediate suspension drinking source Metropolitan Region Belo Horizonte (6 million people), irrespective representing 30% all supply. this study, purpose was assess potential links between tailings distribution, composition forest vegetation, which worked out latent variables regression models. The represented by numerous physical chemical parameters, measured 4 times 22 sites during dry period 2019. modeling results suggested release aluminum phosphorus sand fractions mine major cause contamination. NDVI interpreted environmental deterioration. Changes redox may have manganese surface further affecting NDVI. Distance dissolved calcium appear attenuate Overall, regressions allowed robust prognoses deterioration under low flow conditions. More importantly, they can be transposed similar ruptures helping decide upon measures bring rivers pre-rupture

Language: Английский

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A partial least squares-path model of environmental degradation in the Paraopeba River, for rainy seasons after the rupture of B1 tailings dam, Brumadinho, Brazil

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 851, P. 158248 - 158248

Published: Aug. 24, 2022

Language: Английский

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Hydrogeochemical characteristics and health risk assessment of potentially toxic elements in groundwater and their relationship with the ecosystem: case study in Tunisia

Environmental Science and Pollution Research, Journal Year: 2023, Volume and Issue: 30(14), P. 40031 - 40048

Published: Jan. 5, 2023

Language: Английский

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Spatiotemporal patterns of remotely sensed phenology and their response to climate change and topography in subtropical bamboo forests during 2001-2017: a case study in Zhejiang Province, China

GIScience & Remote Sensing, Journal Year: 2023, Volume and Issue: 60(1)

Published: Jan. 3, 2023

Vegetation phenology has long been adapted to environmental change and is highly sensitive climate change. Shifts in also affect feedbacks of vegetation factors such as topography by influencing spatiotemporal fluctuations productivity, carbon fixation, the water cycle. However, there are limited studies which explores combined effects terrain on phenology. Bamboo forests exhibit outstanding phenological phenomena play an important role maintaining global balance Therefore, interaction mechanisms bamboo forest were analyzed Zhejiang Province, China during 2001–2017. The partial least squares path model was applied clarify interplay between impacts under land cover/use results revealed that average start date growing season (SOS) significantly advanced 0.81 days annually, end (EOS) delayed 0.27 length (LOS) increased 1.08 annually. There obvious spatial differences correlation coefficients metrics. Although SOS, EOS LOS affected different climatic factors, precipitation dominant factor. Due sensitivity SOS precipitation, a 100 mm increase regional annual would cause advance 0.18 be 0.12 days. Regarding affecting conditions, clear influences altitudes, slopes aspect gradients This study further showed topographic mainly interannual variations metrics precipitation. clarified pattern interactive vegetative this information crucial assessing impact sequestration potential forests.

Language: Английский

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A Regression Model of Stream Water Quality Based on Interactions between Landscape Composition and Riparian Buffer Width in Small Catchments

Water, Journal Year: 2019, Volume and Issue: 11(9), P. 1757 - 1757

Published: Aug. 23, 2019

Riparian vegetation represents a protective barrier between human activities installed in catchments and capable of generating exporting large amounts contaminants, stream water that is expected to keep quality overtime. This study explored the combined effect landscape composition buffer strip width (L) on quality. The was assessed by forest (F) agriculture (A) ratio (F/A), an index (IWQ) expressed as function physico-chemical parameters. (F/A × L) quantified multiple regression model with interaction term. carried out eight Uberaba River Basin Environmental Protection Area, located state Minas Gerais, Brazil, characterized very different F/A L values. results related improved (larger IWQ values) increasing values L, which were not surprising given abundant similar reports widespread scientific literature. But enlightening. reduced range required sustain at fair level some 40%, remarkable. spatial distribution infiltration capacity within studied catchments. high should comprise larger number patches, allowing dominance subsurface flow soil layer, condition improves probability cross interact before reaching stream. Conversely, low are prone generation overland network, because absence permanent substantially reduces patches. network channelizes runoff conveys surface into specific confluence points stream, reducing or even hampering strip. Notwithstanding interaction, calculated ranges (45–175 m) much than maximum imposed Brazilian Forest Code (30 m), result deserves reflection.

Language: Английский

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