João L. M. Pedroso de Lima

João L. M. Pedroso de Lima
University of Coimbra | UC · Department of Civil Engineering

Dr.

About

203
Publications
36,414
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3,281
Citations
Citations since 2017
50 Research Items
1887 Citations
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20172018201920202021202220230100200300400
20172018201920202021202220230100200300400
20172018201920202021202220230100200300400
Additional affiliations
September 1991 - present
IMAR Marine and Environmental Research Centre
Position
  • Senior Researcher

Publications

Publications (203)
Article
Dam construction and streamflow regulation are increasing throughout the world, with impacts in impounded aquatic ecosystems. Hydropower dams, some of them causing a phenomenon called “hydropeaking” during their operation, are known for having a variety of impacts on downstream aquatic biota, particularly fish, and respective habitat. This can resu...
Article
Full-text available
Caatinga biome, located in the Brazilian semi-arid region, is the most populous semi-arid region in the world, causing intensification in land degradation and loss of biodiversity over time. The main objective of this paper is to determine and analyze the changes in land cover and use, over time, on the biophysical parameters in the Caatinga biome...
Article
Full-text available
Rice cultivation is one of the largest users of the world’s freshwater resources. The contribution of remote sensing observations for identifying the conditions under which rice is cultivated, particularly throughout the growing season, can be instrumental for water, and crop management. Data from different remote sensing platforms are being used i...
Chapter
Full-text available
No decurso da sua longa e ativa carreira académica, o Professor Luciano Lourenço desenvolveu uma intensa atividade de interação e cooperação com instituições, grupos de investigação, profissionais de diversas áreas de atividade e do conhecimento, em estreita associação à sua atividade científica e docente, mas também consequência do seu caráter bei...
Chapter
No decurso da sua longa e ativa carreira académica, o Professor Luciano Lourenço desenvolveu uma intensa atividade de interação e cooperação com instituições, grupos de investigação, profissionais de diversas áreas de atividade e do conhecimento, em estreita associação à sua atividade científica e docente, mas também consequência do seu caráter bei...
Article
Full-text available
Water scarcity and changing rainfall distribution have caused uncertainties in relation to agricultural production in semiarid areas. In this context, water reuse for irrigation is a promising alternative, although requiring irrigation and agricultural management. Production of forage plants is strategic for semiarid areas due to their high toleran...
Article
The main factors responsible for the greatest natural disasters are related to extreme weather events for which no country is really well-prepared, particularly in Latin America, and specifically in Brazil. This research was developed to determine the spatiotemporal climatic similarities of municipalities along a longitudinal gradient from the east...
Article
Full-text available
This study presents a tracer technique based on the fluorescent properties of quinine to help on the visualization of shallow flows and allow a quantitative measurement of overland flow velocities. Laboratory experiments were conducted to compare the traditional dye tracer and thermal tracer techniques with this novel fluorescent (quinine) tracer b...
Article
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This paper presents a two-dimensional (2D) numerical model of soil erosion and sediment transport resulting from rainfall induced overland flow. It is a spatial and temporal dynamic model combining physical and empirical laws and comprises: i) An overland flow module that solves the two-dimensional unsteady water flow equations on an infiltrating s...
Chapter
Rice, which is strategic for food security in some countries, is traditionally grown under continuous flooding, thus requiring much more irrigation water than non-ponded crops. Fresh water shortage issues and steadily increasing competition for water (human consumption, agriculture) make the accurate and up-to-date assessment of the spatial distrib...
Article
Measuring and monitoring the water depth/level is a key issue when studying free-surface flows. These tasks are usually expensive in terms of time and money; however, even that expenditure is sometimes not enough to assure reliable and/or accurate results. Free-surface flows are complicated to deal with, as the instability caused by e.g., turbulenc...
Article
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Understanding the temporal and spatial dynamic of soil temperature is crucial for agriculture, since it affects soil evaporation and soil biological activity, influencing seed germination, root growth and absorption of water and nutrients by crops, and ultimately the runoff process. Mulching is one of the most applied soil and water conservation me...
Article
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Impact of nature-based solutions for soil and water conservation in semi-arid Brazil. Conservation techniques are highly relevant, for sustainable land use, especially in semiarid regions. The aim of this study was to investigate the impact of conservation techniques in reducing sediment losses and increasing soil moisture, under natural rainfall i...
Article
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This paper aims to investigate the performance of mulch cover with coir dust (Cocos nucifera L.) and cover crop with Palma cactus (Opuntia ficus indica Mill.) as soil and water conservation techniques, in a laboratory soil flume under simulated rainfall. Palma cactus plants oriented at 90 • and 30 • angles with the slope direction were considered....
Article
Liquid-phase nonpoint source pollution dispersion and removal on sustainable urban drainage systems (SUDS) is an important issue for urban pollution mitigation which remains a challenge, as current researches mostly focus on pollutants removal by settling. Nevertheless, most of liquid-phase pollutants behave as dissolved substances on overland flow...
Article
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RESUMO A região semiárida do nordeste brasileiro é marcada por elevadas incertezas quanto à ocorrência de chuvas intensas, bem como por anos sequenciados de secas. Esses fenômenos naturais, somados à reduzida utilização de práticas conservacionistas, podem gerar degradação dos solos. Nesse contexto, o presente estudo objetivou avaliar a importância...
Article
This paper seeks to understand the relationship between risk and cultural heritage as a strategy to raise awareness of the vulnerabilities of populations and their cultural heritage. It focuses on the built heritage of Lisbon Downtown in its different dimensions, tangible and intangible, and argues for the concept of place identity as a way of full...
Article
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The role of stony soils in runoff response of mountain catchments is rarely studied. We have compared simulated response of stony soils with measured catchment runoff for events caused by rains of small and high intensities in the mountain catchment of the Jalovecký Creek, Slovakia. The soil water response was simulated for three sites with stonine...
Article
Soil erosion in the presence of surface rock fragments and organic mulches has been mostly studied for 1-dimensional surface flows. This study evaluates the influence of different distribution patterns of rock fragment surface cover on runoff and soil loss from converging and diverging plane surfaces. The laboratory apparatus was comprised of a rai...
Article
Full-text available
It is widely accepted that urbanization modifies the hydrological processes, increasing runoff and flood hazard. However, after decades of research, the magnitude of the impacts is not well understood. This is partially due to spatial-temporal differences in rainfall-runoff processes over complex landscapes comprising different land-uses, typical o...
Article
Urbanization affects runoff processes and sediment transport, but the magnitude of the impacts remains poorly understood. Different spatial patterns of pervious and impervious surfaces influence flow and sediment connectivity between hillslopes and stream networks. Following years of research on the peri-urbanizing Ribeira dos Covões catchment in P...
Article
Full-text available
This preface is part of the special issue “Innovative monitoring techniques and modelling approaches for analysing hydrological processes in small basins”. It is a result of the 17th Biennial Conference ERB 2018, Darmstadt, Germany, 11–14 September 2018. https://www.adv-geosci.net/48/index.html
Conference Paper
Full-text available
A termografia de infravermelhos tem como base a deteção da radiação infravermelha emitida pelos corpos, convertendo-a posteriormente em imagens visíveis (termogramas). Estas imagens, que contêm informação sobre a temperatura da superfície dos corpos, são já utilizadas por exemplo na monitorização de processos industriais, construção civil, medicina...
Article
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Hydrological studies in small basins are essential for investigating the role of distinct processes on water resources conservation and to assess the impact of the natural ecosystems on improving water security especially in semiarid environments. In Brazil, the cooperative hydrological Network REHISA (“REde de HIdrologia do SemiÁrido”) comprises h...
Article
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Application of crop residues (mulch) over the soil surface is a common practice to control soil erosion and promote infiltration. This laboratory study aimed at investigating the effect of different rice straw mulch sizes on runoff and sediment transport. The experimental runs were conducted using a soil flume of adjustable slope and a rainfall sim...
Article
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Understanding small-scale hydrologic processes and the impact of soil conservation techniques are crucial in reducing runoff and sediment losses in semi-arid regions. This study was conducted in the Alto Ipanema River Basin, in Pernambuco State (Brazil). Soil and water dynamics were intensely monitored in twelve experimental plots with different co...
Chapter
Full-text available
Article
For a long time, tracer techniques based on dyes, salts and more recently heat have been used to estimate shallow flow velocities. Traditionally, flow velocity estimation using tracers would consist of tracking the movement of the leading edge or the centroid of the tracer with the flow. An alternative methodology uses an analytical solution of an...
Article
Full-text available
Abstract The use of mulch as a management tool has shown one of the highest effectiveness/cost ratios for improving agricultural soil fertility, crop productivity, soil restoration in badlands and post-fire soil erosion mitigation. Some researchers have suggested that mulching costs can be reduced by applying it in strips rather than over the entir...
Article
RESUMO Os sistemas de aproveitamento de água de chuva baseiam-se na coleta do escoamento de superfícies pouco permeáveis, como telhados e ruas. Esses sistemas são projetados, muitas vezes, com dados de pluviômetros, e não de pluviógrafos, e podem desconsiderar informações importantes da quantidade precipitada disponível para aproveitamento. Neste t...
Article
Full-text available
Terrain slope and drainage networks are useful components to the basins morphometric characterization as well as to hydrologic modelling. One way to obtain the slope, drainage networks, and basins delineation is by their extraction from Digital Elevation Models (DEMs) and, therefore, their accuracy depends on the accuracy of the used DEM. Regional...
Article
The kinematic wave theory has been a widely accepted technique for modeling overland flow. Although it is recognized that overland flow is nonlinear, linear approximations have nonetheless been applied and found to be satisfactory on small impermeable areas such as those found in the urban environment as well as on steep slopes. Linear approximatio...
Article
The accurate measurement of velocities of shallow overland flows normally found in the field of hydrology is essential to understand the kinematics of these flows. In view of this, we have tested the capability of a new thermal particle tracer (cold oil droplets) under controlled laboratory conditions to measure the velocity of shallow overland flo...
Article
Full-text available
Environmental monitoring plays a central role in diagnosing climate and management impacts on natural and agricultural systems; enhancing the understanding of hydrological processes; optimizing the allocation and distribution of water resources; and assessing, forecasting, and even preventing natural disasters. Nowadays, most monitoring and data co...
Preprint
Full-text available
Environmental monitoring plays a central role in diagnosing climate and management impacts on natural and agricultural systems, enhancing the understanding hydrological processes, optimizing the allocation and distribution of water resources, and assessing, forecasting and even preventing natural disasters. Nowadays, most monitoring and data collec...
Poster
Objetivo: Verificar se as linhas de água extraídas de Modelos Digitais de Elevação (MDEs) criados a partir dos MDEs globais ASTER e SRTM e de linhas de água existentes no projeto colaborativo OpenStreetMap (OSM) possuem maior exatidão vertical que as linhas de água extraídas dos MDEs originais. Metodologia: A reconstrução dos MDEs ASTER e SRTM é fe...
Article
Planning the vegetation restoration of badlands requires an understanding of the mechanisms associated with seed transport due to runoff and soil erosion. This is particularly important in semiarid environments, such as those found in Pernambuco, Northeast Brazil, where rainfall mostly occurs in the form of intense short-term events with a high pot...
Article
Full-text available
A caracterização da variabilidade espacial é importante para identificar áreas com potencial diferente para a produção de culturas. O objetivo do presente estudo é avaliar o impacto da presença e ausência de mulching, utilizando a variabilidade espacial em altura e diâmetro da colheita de oleaginosas não convencional (Moringa oleifera Lam.), Em um...
Article
Catchment geomorphology is one of the most important factors governing runoff and erosion. However, its complexity is difficult to describe accurately; thus, for simplicity, many studies assume hillslopes with a uniform sloping profile. The influence of this simplification on estimating the rainfall-runoff and sediment loss processes is not well un...
Article
Full-text available
Wildfires typically transform vegetation and litter into a heterogeneous layer of ash and charred material covering the soil surface that can substantially modify the post-fire hydrological and erosive response. To further elucidate the influence of post-fire covering layers on sheet and concentrated flow erosion, we carried out laboratory rainfall...
Article
The accurate measurement of shallow flow velocities is crucial to understand and model the dynamics of sediment and pollutant transport by overland flow. In this study, a novel triple-tracer approach was used to re-evaluate and compare the traditional and well established dye and salt tracer techniques with the more recent thermal tracer technique...
Article
Full-text available
Abstract: Drainage networks allow the extraction of topographic parameters that are useful for basins characterization and necessary for hydrologic modelling. One way to obtain drainage networks is by their extraction from Digital Elevation Models (DEMs). However, it is common that no freely available DEMs at regional or national level exist. One...
Article
Full-text available
Among the urban aquatic pollutants, the most common is sediment which also acts as a transport medium for many contaminants. Hence there is an increasing interest in being able to better predict the sediment wash–off from urban surfaces. The exponential wash-off model is the most widely used method to predict the sediment wash-off. Although a numbe...
Article
Full-text available
Roof runoff is an important source of urban stormwater and a main source of rainwater harvesting. Deposition of pollutants on rooftops can have a negative impact on runoff quality and, therefore, on harvested rainwater. Laboratory experiments with simulated rainfall were performed in order to study the washout of fine sand particles deposited on a...
Article
Prediction and risk assessment of hydrological extremes are great challenges. Following climate predictions, frequent and violent rainstorms will become a new hazard to several regions in the medium term. Particularly agricultural soils will be severely threatened due to the combined action of heavy rainfall and accompanying winds on bare soil surf...
Article
Full-text available
Post-fire forest residue mulching using eucalypt bark strands have been proven effective for reducing hillslope runoff and erosion in field plots of different sizes (0.25–100 m²). Application rates of around 8–10 Mg ha⁻¹ achieved about 80% protective soil surface. Lower application rates, however, would reduce costs and, possibly, allow faster appl...
Book
Full-text available
A Special Issue: Hydrological Behaviour In Small Basins Under Changing Conditions. The ERB (The Euromediterranean Network of Experimental and Representative Basins) is an open association of 23 European countries operating and managing well instrumented experimental and representative basins for hydrological and environmental research on a long-ter...
Conference Paper
Full-text available
Prediction and risk assessment of hydrological extremes are great challenges. Following climate predictions, frequent and violent rainstorms will become a new hazard to several regions in the medium term. Particularly agricultural soils will be severely threatened due to the combined action of heavy rainfall and accompanying winds on bare soil surf...
Article
Full-text available
This study aimed to evaluate the applicability of an infrared thermography technique relying on cooling the soil surface with cold water for assessing soil water repellency (SWR) severity under field conditions. This study is a follow-up of earlier exploratory small-scale laboratory tests, where SWR spatial variability was mapped and repellent area...
Conference Paper
Full-text available
The evolution of urban areas strongly influences the rainfall-runoff process, leading to an increase of the superficial flow and a decrease of infiltration. This study pretends to quantify the infiltration process in Calçada à Portuguesa pavements. Field tests with a double-ring infiltrometer were carried out, by two different methodologies: (i) va...
Article
Full-text available
Purpose Relatively little is known in the Mediterranean environment about changes in streamflow during urban development in partially urbanized peri-urban catchments. This paper explores the modification of streamflow regime as a consequence of the construction of an enterprise park, a major road, and expansion of residential areas, leading to urba...
Article
Full-text available
Purpose This study aims to quantify and characterise sediments accumulated in the street gutters in an urban area of Poços de Caldas, Brazil. The main research questions are: What type of urban areas, e.g. those under construction, produce most sediments and what are the main characteristics of such sediments? What differences, e.g. granulometry, c...
Article
Transport of soil particles prior to the occurrence of overland flow is one of the big question marks in soil erosion studies. The exact measurement of short-distance transported soil particles is a challenge to soil erosion science due to the particular requirements of the experimental design and test procedure. To quantify amount and distance of...
Article
Full-text available
This exploratory study presents a technique to assess soil water repellency (SWR) spatial variability based on infrared thermography. Small-scale laboratory tests were carried out using a soil flume and a loamy-sand soil, where SWR was induced on soil surface with waterproofing spray and repellent areas were mapped through thermal imaging, using a...
Poster
Full-text available
No contexto do saneamento urbano, por mais abrangentes que sejam as políticas públicas específicas e por maior que tenham sido os esforços nas esferas política, técnica e econômica para conter e controlar a poluição urbana, ainda é insipiente a atenção que se dá em relação à poluição difusa proveniente da ocupação urbana em geral e principalmente n...
Article
Generally, roofs are the best candidates for rainwater harvesting. In this context, the correct evaluation of the quantity and quality of runoff from roofs is essential to effectively design rainwater harvesting systems. This study aims to evaluate the performance of a kinematic wave based numerical model in simulating runoff on sloping roofs, by c...
Article
The present study aims to evaluate small-scale infiltration losses of Portuguese cobblestone pavements. This type of pavement consists of rectangular hand-cut natural stones, mainly limestone, with different sizes and it is the most usual type of pavement for sidewalks and squares in Portuguese villages and cities. Portuguese cobblestone pavement c...
Article
Rainfall simulation is widely used in the laboratory and in field work to produce artificial rainfall for small-scale surface hydrology and soil erosion studies. Simulated rainfall produced by simulators must be predictable, accurate and consistent to be useful to model the related physical processes. Pressure fluctuations in the water supply syste...
Conference Paper
Full-text available
A posição das linhas de água é necessária para vários tipos de análises no âmbito da Hidrologia, podendo a sua localização ser obtida a partir de dados oficiais com elevada exatidão. No entanto, por vezes, esta informação não está disponível ou pode ter custos elevados. Em alternativa, a rede hidrográfica pode ser obtida a partir de dados de acesso...