Use of n-alkanes to trace erosion and main sources of sediments in a watershed in southern Brazil

Galoski, Carlos Eduardo; Martínez, Angela Ethelis Jiménez; Schultz, Gilson Bauer; Santos, Irani dos; Froehner, Sandro

doi:10.1016/j.scitotenv.2019.05.209

Cited by 19 publications

(7 citation statements)

References 46 publications

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“…These were first proposed for palaeoclimatic reconstructions (Eglinton and Eglinton 2008 ). More recently, this method was tested in a catchment in Southern Brazil to discriminate the sediment contributions supplied by Pinus taeda commercial plantations and those from native forests (Galoski et al 2019 ). Biomarker analyses are expensive relative to many more conventional tracers and there remains a need to explore and confirm the incremental cost-benefits of their application in conjunction with traditional tracer types across a range of environmental settings with differing levels of source complexity.…”

Section: Emerging Themes In Sediment Fingerprinting Research and Applmentioning

confidence: 99%

Sediment source fingerprinting: benchmarking recent outputs, remaining challenges and emerging themes

et al. 2020

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Purpose This review of sediment source fingerprinting assesses the current state-of-the-art, remaining challenges and emerging themes. It combines inputs from international scientists either with track records in the approach or with expertise relevant to progressing the science. Methods Web of Science and Google Scholar were used to review published papers spanning the period 2013–2019, inclusive, to confirm publication trends in quantities of papers by study area country and the types of tracers used. The most recent (2018–2019, inclusive) papers were also benchmarked using a methodological decision-tree published in 2017. Scope Areas requiring further research and international consensus on methodological detail are reviewed, and these comprise spatial variability in tracers and corresponding sampling implications for end-members, temporal variability in tracers and sampling implications for end-members and target sediment, tracer conservation and knowledge-based pre-selection, the physico-chemical basis for source discrimination and dissemination of fingerprinting results to stakeholders. Emerging themes are also discussed: novel tracers, concentration-dependence for biomarkers, combining sediment fingerprinting and age-dating, applications to sediment-bound pollutants, incorporation of supportive spatial information to augment discrimination and modelling, aeolian sediment source fingerprinting, integration with process-based models and development of open-access software tools for data processing. Conclusions The popularity of sediment source fingerprinting continues on an upward trend globally, but with this growth comes issues surrounding lack of standardisation and procedural diversity. Nonetheless, the last 2 years have also evidenced growing uptake of critical requirements for robust applications and this review is intended to signpost investigators, both old and new, towards these benchmarks and remaining research challenges for, and emerging options for different applications of, the fingerprinting approach.

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Section: Emerging Themes In Sediment Fingerprinting Research and Applmentioning

confidence: 99%

Sediment source fingerprinting: benchmarking recent outputs, remaining challenges and emerging themes

et al. 2020

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“…Embora enchentes, alagamentos e inundações se diferenciem pela dependência de curso hídrico (BUFFON; SOUSA, 2018), extravasamento de canal e intensidade (Figura 6) (UFSC/ CEPED, 2013, SAUSEN;LACRUZ, 2015), o reflorestamento é uma medida bastante em comum e frequente (COHEN-SHACHAM et al, 2019). É importante ressaltar que o reflorestamento é sempre preferível ser realizado com plantas nativas, por possuírem mais adaptações ao solo (SHIMAMOTO et al, 2018;GALOSKI et al, 2019). A cobertura vegetal recebe destaque porque em um ambiente oferece os serviços: infiltração de água; redução do escoamento superficial; criação de habitats; sequestro de carbono; controle de erosão; e redução de temperatura (GRIMALDI et al, 2014;ADLER;TANNER, 2015;ROSIN;BENINI, 2018).…”

Section: Medidas/ Ações Para Inundações Repentinasunclassified

“…Por outro lado, o desmatamento e edificação facilitam a formação de ilhas de calor, perda de biodiversidade, fragilidade do ambiente para diversos tipos de intemperismo e escoamento superficial de água (ADLER;TANNER, 2015). As raízes e a deposição de matéria orgânica proveniente da vegetação promovem agregação do solo e mais diversos processos ecológicos com formação de poros que reduzem o escoamento superficial (GRIMALDI et al, 2014;GALOSKI et al, 2019). A cobertura vegetal tem demonstrado ser um dos principais redutores de inundações repentinas (TUCCI, 2001, GRIMALDI et al, 2014, ADLER, TANNER, 2015, NOBRE, MARENGO, 2017BENINI, 2018, COHEN-SHACHAM et al, 2019, GALOSKI et al, 2019.…”

Section: Medidas/ Ações Para Inundações Repentinasunclassified

Flash-floods control

Silva¹,

Silva²,

Mendonça³

2021

ANAP

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Flash-Floods are among the hydrological disasters that most damage life and structures in Brazil. The frequency and impacts of flash-floods may become an increasing problem due to the future scenario of an increase in global temperature causing intense precipitation. Through the literature, the aim of this study was: clarify how flash-floods occur; present national policies and legal provisions related to disaster risk management and what actions are suggested for prevention and response. Flash-floods are intense water superficial movements that are not dependent on watercourses. They are depending of warm and humid climate, rugged terrain and waterproofing land cover. All over the planet, actions are proposed for these disasters. In Brazil, Civil Defense acts through monitoring, diagnosis, prognosis and structural actions, i.e., physical, and non-structural, or regulatory. The structural actions to flash-floods are focused on land cover and mainly vegetation, while non-structural actions focus on zoning risk areas and assisting of affected populations. These measurements can be improved with social data, as income, and meteorological data, as air mass movement, temperature, humidity and clouds. Information about flash-floods, responsible agencies and measures can be used to help manage the risk of these disasters.

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“…D. Wang et al, 2018). Some new tracers have emerged in recent studies, such as n-alkanes (Galoski et al, 2019), compound-specific stable isotopes (Hirave et al, 2021;Mabit et al, 2018;Upadhayay et al, 2018), and eDNA (Frankl et al, 2022). The optimization of the mixing model may improve the accuracy of the sediment source tracing results to some extent, such as via the choice of data corrections Koiter et al, 2018) or through the use of Bayesian mixing models based on prior information and conditional probability (Stock et al, 2018;Torres-Martínez et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…The potential of fingerprint tracers has been explored like color properties (Martínez‐Carreras et al, 2010; Nosrati, Akbari‐Mahdiabad, et al, 2021), fallout radionuclides (Gourdin et al, 2014; Ni et al, 2017), magnetic parameters or geochemistry (Franz et al, 2013; Ramon et al, 2020; W. D. Wang et al, 2018). Some new tracers have emerged in recent studies, such as n‐alkanes (Galoski et al, 2019), compound‐specific stable isotopes (Hirave et al, 2021; Mabit et al, 2018; Upadhayay et al, 2018), and eDNA (Frankl et al, 2022). The optimization of the mixing model may improve the accuracy of the sediment source tracing results to some extent, such as via the choice of data corrections (Collins, Walling, et al, 2010; Koiter et al, 2018) or through the use of Bayesian mixing models based on prior information and conditional probability (Stock et al, 2018; Torres‐Martínez et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Validating the accuracy of multiple sediment fingerprinting methods

Dai

Chen

et al. 2022

Land Degrad Dev

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Sediment source fingerprinting provides an effective and reliable way for targeted control of soil erosion. However, the accuracy of source contribution predictions of different fingerprinting methods has not been well verified, which affects the further application of these methods. Here, compared with the real sediment sources measured by indoor simulated scouring experiments, we verified the accuracy of two tracers (geochemical elements and n-alkanes) and three mixing models (Walling model, MixSIAR, and Landwehr model). The results showed that geochemical properties have high accuracy in identifying sediment sources, with the mean absolute error (MAE) ranging from 3.5%-5.9%, while poor results were shown for n-alkanes (MAE values 7.5%-45.7%). The Walling model and MixSIAR showed higher accuracy of contribution prediction, and the MAE was 3.5%-5.9% and 0.7%-3.5%, respectively.Although Landwehr also presented high accuracy of model output, it was relatively less robust compared with the former two mixing models (the MAE range was 3.8%-9.7%). Furthermore, the mixing model with three correction factors (particle size, organic matter (OM), and particle size with OM) showed poor output results for scouring experiments. This study provides a reference for the selection and determination of tracers, mixing models, and correction factors in field experiments.

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Use of n-alkanes to trace erosion and main sources of sediments in a watershed in southern Brazil

Cited by 19 publications

References 46 publications

Sediment source fingerprinting: benchmarking recent outputs, remaining challenges and emerging themes

Sediment source fingerprinting: benchmarking recent outputs, remaining challenges and emerging themes

Flash-floods control

Validating the accuracy of multiple sediment fingerprinting methods

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