Combining sediment source tracing techniques with traditional monitoring: The “Arvorezinha catchment” experience

Minella, Jean; Merten, Gustavo Henrique; Schlesner, Alexandre; Bernardi, Felipe; Barros, Cláudia Alessandra Peixoto de; Tiecher, Tales; Ramon, Rafael; Evrard, Olivier; Santos, Danilo Rheinheimer dos; Reichert, José Miguel; Tassi, Rutinéia

doi:10.1002/hyp.14665

Cited by 7 publications

(3 citation statements)

References 73 publications

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“…In this Special Issue, Minella et al (2022) discuss how sediment studies in the small Arvorezinha experimental catchment located on the edge of the Brazilian meridional plateau in southern Brazil have evolved to combine traditional monitoring with sediment source tracing techniques and to allow the calculation of sediment budgets. Erosion from cultivated hillslopes, tracks and unpaved roads and channel banks amounted to 1065.4 t year −1 whereas sediment yield at the catchment outlet was only 156.7 t year −1 because of the effects of in‐field deposition, conveyance losses between the field and the valley floor and river channel, and deposition in the valley floor, in the floodplain and in riparian areas and in the river channel.…”

Section: Themesmentioning

confidence: 99%

Understanding sediment in river systems—Building on a 50‐year contribution

Webb

Foster

McNamara

2023

Hydrological Processes

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Walling wrote his first papers about suspended sediment in Devon river catchments as a young hydrologist more than 50 years ago in the early 1970s. In those days, some very senior scientists told him he was wasting his time, because soil erosion in Britain was not a problem, and British rivers were not muddy! A half a century, and more than 500 publications (the majority of which are devoted to fine sediment in river catchments) later, Des is regarded as one of the world's leading hydrologists who have focused on erosion and sediment yields and catchment sediment budgets. His prolific, distinguished and frequently highly-cited research contributions have been recognized by important awards including the IAHS/UNESCO/ WMO International Hydrology Prize, the American Geophysical Union Hydrologic Sciences Award, the Norman Hudson Memorial Award of the World Association of Soil and Water Conservation, the Chien Ning International Prize of the World Association for Sedimentation and Erosion Research and the Victoria Medal of the Royal Geographical Society. Des has advocated eloquently and powerfully that sediment studies have an important role within the discipline of hydrology, not only because of the implications for environmental protection and sustainable development, but also because fine sediment represents a key pathway for material transport at all scales ranging from the individual farmer's field to the global earth system. In order to underpin his work, Des established an intensive programme of field investigations through a network of long-term measuring sites in the local Exe basin, which operated for over 30 years. He also developed complementary high quality laboratory facilities in the Geography Department at the University of Exeter for studying sediment properties, including one of the best-equipped gamma spectrometry laboratories in the world. However, he was also keen to extend the canvas on which he worked beyond the local to the national and the international. Such activity has seen him conducting soil loss studies across several areas of Britain and investigating the delivery of sediment through larger river systems including the River Severn and the Yorkshire Ouse. He has also carried out much work overseas in North, East and Southern Africa,

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Section: Themesmentioning

confidence: 99%

Understanding sediment in river systems—Building on a 50‐year contribution

Webb

Foster

McNamara

2023

Hydrological Processes

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“…As informações são utilizadas para o aprimoramento de técnicas de modelagem e descrição dos fenômenos erosivos, sendo a identificação das fontes de sedimentos uma das principais técnicas utilizadas (MINELLA et al, 2022).…”

Section: O Experimento Realizadounclassified

Implementação de um modelo para análise de incertezas em traçagem de sedimentos

BURIOL,

Buligon,

Minella

2023

Anais Do Encontro Regional De Matemática Aplicada E Computacional Do Rio Grande Do Sul

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RESUMO: A identificação das fontes de sedimentos é uma importante etapa para a modelagem de processos erosivos em bacias hidrográficas em que, a partir de traçadores https://pt.overleaf.com/project/64324b0b60272ca7a259b591químicos presentes no solos e no rio, utiliza um conjunto de técnicas de estatísticas conhecido como fingerprinting approach. Um dos desafios para o aprimoramento desta abordagem é a estimativa das incertezas dos resultados das proporções contribuídas, nesse sentido, a definição do número de amostras utilizadas para caracterizar fontes e sedimentos erodidos é um aspecto crítico. Assim, torna-se importante aprimorar os métodos de análise de incertezas visando obter uma otimização do número de amostras necessárias e redução de custos associados. Os modelos numéricos computacionais descritos na literatura podem ser de difícil reprodução uma vez que seus códigos fonte nem sempre são disponibilizados. Nesse contexto, a implementação e compartilhamento de programas computacionais em código aberto permite a revisão e a validação dos métodos por diferentes pesquisadores, fomentando seu desenvolvimento e aprimorando os algoritmos existentes. Este trabalho revisa o modelo de Clarke e Minella (2016) que avalia a eficiência da amostragem ao estimar a contribuição de fontes de sedimentos, implementando o método na linguagem Python, reproduzindo seus resultados. A implementação desenvolvida permite avaliar o método e analisar os efeitos da redução do número de amostras sobre as incertezas relacionadas aos resultados no cálculo das proporções contribuídas pelas fontes de sedimentos.

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“…Despite high economic importance, this land use comes with noteworthy implications for the environment in terms of water resources and water quality (Ruviaro et al, 2020). Conservation agriculture is of utmost importance (Andrade et al, 2012; Hollanda et al, 2015) with special regard to pollution (Becker et al, 2009; Broetto et al, 2017; Klippel, 2016; Sharma et al, 2018) for environmental planning and management (Bastos et al, 2021; Minella et al, 2007; Minella et al, 2022; Santos et al, 2016). Among the important factors in erosion prevention are no‐tillage and extended riparian vegetation, which increase soil infiltration and physically protect streams from (possibly polluted) runoff water.…”

Section: Introductionmentioning

confidence: 99%

Rainfall event‐based surface runoff and erosion in small watersheds under dairy and direct‐seeding grain production

Ebling

Reichert

Minella

et al. 2022

Hydrological Processes

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A 3-year study on erosion and streamflow was conducted in two adjacent paired watersheds that flow into the Passo Real reservoir, one of the largest and most important reservoirs for human water supply and power generation in southern Brazil. The watersheds have similar land use and soil management, but different size and riparian vegetation. The first objective of the study was to monitor and evaluate hydrosedimentological dynamics and effects of riparian vegetation, over a range of rain events, in the two watersheds; the second was to assess the ability of the Limburg Soil Erosion Model (LISEM) to represent these small watersheds in hydrosedimentological terms (runoff and erosion) under individual rain events, in the context of better understanding the role of riparian vegetation and land cover. LISEM is a hydrological model structured on physically based equations that can be used for planning and conservation purposes. Studied rainfall events between 2016 and 2018 had a wide range in total rainfall (10-170 mm), rainfall intensity in 1 h (3-66 mm h À1 ), stream peak flows (4-5741 L s À1 ), runoff volume (0.02-40 mm), runoff coefficient (0.1-32%), maximum suspended sediment concentration (20-19 611 mg L À1 ), and sediment yield (0.002-33.790 Mg km À2 ). Both watersheds showed a rapid response to rain events with significant runoff generation. Abundance of unpaved roads (often parallel to the slope) promoted high runoff due to channelization effects. South Watershed has 59% more riparian vegetation than North Watershed, but this greater riparian vegetation was not effective in reducing surface runoff and erosion. Furthermore, local adoption of no-tillage was insufficient to control runoff and sediment yield.

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Combining sediment source tracing techniques with traditional monitoring: The “Arvorezinha catchment” experience

Cited by 7 publications

References 73 publications

Understanding sediment in river systems—Building on a 50‐year contribution

Understanding sediment in river systems—Building on a 50‐year contribution

Implementação de um modelo para análise de incertezas em traçagem de sedimentos

Rainfall event‐based surface runoff and erosion in small watersheds under dairy and direct‐seeding grain production

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