Marie-Paule Bonnet

Marie-Paule Bonnet
Institute of Research for Development | IRD · Environment and Resources Department

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156
Publications
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Publications

Publications (156)
Article
Full-text available
Although Brazil is among the world's largest consumers of pesticides, their impacts on local populations have struggled to emerge as a public problem due to a political context that is particularly favourable to industrial agriculture. In this article, we investigate how the knowledge produced on the impact of pesticides contributes (or not) to the...
Preprint
Full-text available
Theoretical trends in agent-based modeling (ABM) draw sharp lines that usually limit the expressiveness of models to fit their methodological box: KISS puts emphasis on parsimonious and tractable model for systematic simulation analysis, KIDS focuses on the use of data for model specification and simulation validation, while KILT highlights the inv...
Article
The Amazon floodplains are complex systems influenced by the annual hydrological regime with an effect on the structuring of physical, chemical and biological processes. Thus, we evaluated the relationship of environmental factors with the composition and variation of functional groups based on morphology (MBFG) during the hydrological year in an A...
Article
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In this study, 16 satellite-based precipitation products (SPPs) comprising satellite, gauge and reanalysis datasets were assessed on a monthly time step using precipitation data from 11 gauge stations across Nigeria within the 2000–2012 period as reference. Despite the ability of some of the SPPs to reproduce the salient north–south pattern of the...
Preprint
Full-text available
Understanding the mechanisms that generate organism distribution patterns from the beta diversity perspective can assist in environmental monitoring strategies. In this study, we emphasized the limnic zooplankton due to the ability of these organisms to respond quickly to environmental variations. Therefore, we evaluated the following questions: (i...
Article
The contamination of coastal environments by metallurgical wastes involves multiple biogeochemical processes; accordingly, understanding metal behavior and risk evaluation of contaminated areas, such as Sepetiba Bay (Rio de Janeiro, Brazil), remains challenging. This study coupled Zn isotopic analyses with sequential extractions (BCR) to investigat...
Article
Full-text available
Scarcity of water temperature data in rivers may limit a diversity of studies considering this property, which regulates many physical, chemical, and biological processes. We present a robust method to generate a consistent, continuous daily river water temperature (RWT) data series for medium and large rivers using the combined techniques of remot...
Chapter
In the Lago Grande de Curuaí, a floodplain of the Amazon River, located close to the city of Santarem (Brazil), the inhabitants have always adapted their activities (centered on agriculture, fishing, cattle raising) to the seasonal fluctuations of the water level. Historically, strong floods occurred about every 20 years, but recently, they have oc...
Article
O lago Poópo é o segundo maior lago da Bolívia e atualmente vem passando por uma forte crise hídrica que alguns autores associam diretamente a mudança de ocupação da terra. Neste trabalho foi realizada a classificação do uso e ocupação do solo na sub-bacia P6 do lago entre os anos de 1985 e 2017. Foi analisado o desempenho dos classificadores SVM (...
Article
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Canadian Water Quality Index (CWQI) provides protection for freshwater life promoting healthy ecosystems and safeguarding human health. Biological Diatom Index (BDI) was developed to indicate the ecological status and water quality of freshwater systems. This paper evaluates the relations between the two different indices. During rising and falling...
Article
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Flooding dynamics across a medium‐size (Janauacá Lake, 786 km2) floodplain system along the Amazon/Solimões River over a 9‐years period (2006–2015) is studied through integration of remote sensing and limited in situ data in hydrologic‐hydrodynamic modelling based on Telemac‐2D model. We firstly detail the methodological approach and the modelling...
Article
This study aims reporting on 23 gridded precipitation datasets (P-datasets) reliability across West Africa through direct comparisons with rain gauges measurement at the daily and monthly time scales over a 4 years period (2000-2003). All P-datasets reliability vary in space and time. The most efficient P-dataset in term of Kling–Gupta Efficiency (...
Article
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In three-dimensional simulations of free-surface flow where the vertical velocities are relevant, such as in lakes, estuaries, reservoirs, and coastal zones, a nonhydrostatic hydrodynamic approach may be necessary. Although the nonhydrostatic hydrodynamic approach improves the physical representation of pressure, acceleration and velocity fields, i...
Conference Paper
Amazonian floodplains ensure fundamental hydro-ecological functions and support a high level of biodiversity. Transformation in the Amazon basin, land use changes, dam construction and climate variability, increasingly threaten these emblematic ecosystems. In view of supporting their conservation, it is important to monitor the spatiotemporal distr...
Article
During the last decades, agriculture has drastically increased over the South American Andean Plateau (Altiplano), resulting in extensive changes in land cover from native vegetation to essentially Quinoa crop. Along with climatic variability, these land use changes appear as a catalyst in worsening the already existing drought events and water sca...
Article
Full-text available
Amazonian floodplains form complex hydrological networks that play relevant roles in global biogeochemical cycles, and bacterial degradation of the organic matter in these systems is key for regional carbon budget. The Amazon undergoes extreme seasonal variations in water level, which produces changes in landscape and diversifies sources of organic...
Article
Many trophic indices have been constructed for temperate aquatic environments, but few have proved reliable for tropical environments. Indices constructed on the basis of nutrients may not be effective for describing the trophic state because the fractions of nitrogen and phosphorus differ in their potential to predict the nutrient limitation in tr...
Article
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Amazonian aquatic environments are complex, and their interaction promotes heterogeneous environments that in turn make it difficult to describe the development of patterns. Amazonian floodplain lakes have different environmental and biological responses in similar water periods due to the interannual variation. We evaluated if the interannual vari...
Article
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Lake Titicaca is a crucial water resource in the central part of the Andean mountain range, and it is one of the lakes most affected by climate warming. Since surface evaporation explains most of the lake's water losses, reliable estimates are paramount to the prediction of global warming impacts on Lake Titicaca and to the region's water resource...
Article
Full-text available
This paper proposes a protocol to assess the space–time consistency of 12 satellite-based precipitation products (SPPs) according to various indicators, including (i) direct comparison of SPPs with 72 precipitation gauges; (ii) sensitivity of streamflow modelling to SPPs at the outlet of four basins; and (iii) the sensitivity of distributed snow mo...
Article
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The processes in tropical floodplain lakes enable maintaining phytoplankton nutrient requirements over a hydrological year. The nutrients such as nitrogen, phosphorus and carbon compounds play an essential role in phytoplankton growth. However, the way that nutrients and phytoplankton interact and how this relationship varies seasonally in tropical...
Article
This paper presents the interest of a highly sensitive biosensor coated with a TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> mesoporous film as a sensitive layer. The main novelty is related to the modeling of the device and simulation by using the finite element method with a COMSOL mult...
Article
Full-text available
This paper proposes a protocol to assess the space-time consistency of satellite precipitation estimates (SPEs) according to various indicators including: (i) direct comparison of SPEs with 72 precipitation gauges; (ii) sensitivity of streamflow modelling to SPEs at the outlet of four basins; and (iii) the sensitivity of distributed snow models to...
Article
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Launched in 2014, the Global Precipitation Measurement (GPM) mission aimed at ensuring the continuity with the Tropical Rainfall Measuring Mission (TRMM) launched in 1997 that has provided unprecedented accuracy in Satellite Precipitation Estimates (SPEs) on the near-global scale. Since then, various SPE versions have been successively made availab...
Article
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Lake Titicaca is an important water ecosystem of South America. Due to uncertainties in estimating the evaporation losses from the lake, surface water storage calculations are uncertain. In this paper, we try to improve evaporation loss estimations by comparing different methods to calculate daily and monthly evaporation from Lake Titicaca. These w...
Article
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The present study aims at the assessment of six satellite rainfall estimates (SREs) in Pakistan. For each assessed products, both real-time (RT) and post adjusted (Adj) versions are considered to highlight their potential benefits in the rainfall estimation at annual, monthly, and daily temporal scales. Three geomorphological climatic zones, i.e.,...
Conference Paper
Full-text available
Resumo. A augmentacao do poder computaçional e dos dados de sensoriamento remoto abriram 4 novos horizontes para monitorar hidrológicos eventos. Tambem, existe uma necessidade no 5 monitoramento da bacia amazônica que enfrenta uma antropização crescente e eventos hidrológicos 6 extremos. A modelagem hidrodinâmica gera novas informações. Utilizamos...
Chapter
In the world richest biotope, wetlands, and specially floodplains, remain particularly active zones in terms of nutrients, biodiversity, flows spreading, sediment transfer and human activities. Today, these sensitive zones are facing increasing human pressures and augmentation in frequency and intensity of extreme events. The impact of such extreme...
Chapter
In the world’s richest biotope, wetlands, and especially floodplains, remain particularly active zones in terms of nutrients, biodiversity, flows spreading, sediment transfer, and human activities. Today, these sensitive zones are facing increasing human pressures and augmentation in frequency and intensity of extreme hydrological events. The impac...
Conference Paper
Full-text available
The new IMERG and GSMaP-v6 satellite rainfall estimation (SRE) products from the GPM mission have been available since January 2015. With a finer spatial resolution of 0.1°, these products should provide more accurate information than their latest widely adapted (relatively coarser spatial scale, 0.25°) counterpart (TMPA product). The present study...
Conference Paper
Full-text available
In May 2016, a new Digital Elevation Model (DEM) called ALOS-DEM was made available by the Japan Aerospace Exploration Agency (JAXA). With a resolution of 30 m the ALOS-DEM bring valuable information over remote regions. The ALOS-DEM is assessed for the first time and over the South American Andean Plateau considering both vertical and relative acc...
Article
Full-text available
The new IMERG and GSMaP-v6 satellite rainfall estimation (SRE) products from the Global Precipitation Monitoring (GPM) mission have been available since January 2015. With a finer grid box of 0.1°, these products should provide more detailed information than their latest widely-adapted (relatively coarser spatial scale, 0.25°) counterpart. Integrat...
Article
Full-text available
In 2015, an emergency state was declared in Bolivia when Poopó Lake dried up. Climate variability and the increasing need for water are potential factors responsible for this situation. Because field data are missing over the region, no statements are possible about the influence of mentioned factors. This study is a preliminary step toward the und...
Article
In the Amazon Basin, floodplains form a complex mosaic of freshwater systems with differing morphologies, resulting in varied inundation patterns and heterogeneous chemical and ecological characteristics. In this study, we focused on the Janauacá floodplain, a medium-sized system (786 km2, including the local watershed) located along the Solimões R...
Conference Paper
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In the low Amazonian basin, interactions between floodplains and river channels are important in terms of water exchanges, sediments, or nutrients. These floodplains and wetlands are considered as hotspot of biodiversity.They are among the most productive in the world. However, they are threatened by climatic changes and anthropic activities. Hence...
Conference Paper
Rainfall is considered to be a prime driver in triggering of climate extremes (flooding and droughts) throughout the globe. For the management of economic, social and environmental impacts of these extremes, various Hazard Assessment Models (HAMs) available and proposed. Major barrier in the use of such HAMs lies in the preparation of their input d...
Article
Full-text available
Previously available only over the Continental United States (CONUS), the 1 arc-second mesh size (spatial resolution) SRTM-GL1 (Shuttle Radar Topographic Mission – Global 1) product has been freely available worldwide since November 2014. With a relatively small mesh size, this digital elevation model (DEM) provides valuable topographic information...
Article
In this study, rating curves (RCs) were determined by applying satellite altimetry to a poorly gauged basin. This study demonstrates the synergistic application of remote sensing and watershed modeling to capture the dynamics and quantity of flow in the Amazon River Basin, respectively. Three major advancements for estimating basin-scale patterns i...
Chapter
The large floodplains associated with the Amazon River and its main tributaries affect water transport, influence sediment and chemical budgets and support highly diverse ecosystems and productive fisheries. Approximately 25% of the Amazon River discharge is routed through these systems along a 2,000 km reach between Sao Paulo de Olivença and Óbido...
Article
The large floodplains associated with the Amazon River and its main tributaries affect water transport, influence sediment and chemical budgets and support highly diverse ecosystems and productive fi sheries. Approximately 25% of the Amazon River discharge is routed through these systems along a 2,000 km reach between Sao Paulo de Olivença and 6bid...
Article
Full-text available
In the Amazon basin, the recently released SRTM Global 1 arc-second (SRTMGL1) remains the best topographic information for hydrological and hydrodynamic modeling purposes. However, its accuracy is hindered by errors, partly due to vegetation, leading to erroneous simulations. Previous efforts to remove the vegetation signal either did not account f...
Conference Paper
Full-text available
Resumo-Previamente disponível sobre os Estados Unidos continentais, o Modelo Digital de Elevação (DEM) SRTM-GL1, foi recentemente disponibilizado em âmbito mundial gratuitamente. Com uma resolução espacial de 30 m esse modelo deveria fornecer informações topográficas precisas nas regiões isoladas. Essas informações são essências para a caracterizaç...
Conference Paper
Full-text available
Resumo. Modelos Digitais de Elevação (MDEs) são atualmente utilizados em modelagem hidrológica e hidrodinâmica. Na bacia Amazônica, o SRTM-GL1 ainda é o único e a melhor informação topográfica disponível em escala adequada para estudos de várzea. Entretanto, sua precisão é dificultada por vários erros em parte devido ao dossel florestal. No caso de...
Conference Paper
Full-text available
Digital Elevation Models (DEMs) are currently used for hydrological and hydrodynamic modeling purposes. In the Amazon basin, the SRTM-GL1 is still the only and best available topographic information at a scale suitable for floodplain studies. Its accuracy is however hindered by various errors partly due to vegetation canopy. In the case of floodpla...
Article
Full-text available
O uso de grupos substitutos em programas de biomonitoramento tem sido proposto para minimizar os altos custos financeiros e tempo para processamento das amostras. Os objetivos deste estudo foram avaliar a correlação entre (i) a distribuição espacial nos principais grupos zooplanctônicos (cladóceros, copépodes, protozoários testáceos e rotíferos), (...
Article
Full-text available
Nine satellite rainfall estimations (SREs) were evaluated for the first time over the South American Andean plateau watershed by comparison with rain gauge data acquired between 2005 and 2007. The comparisons were carried out at the annual, monthly and daily time steps. All SREs reproduce the salient pattern of the annual rain field, with a marked...
Conference Paper
Full-text available
Resumo: Six products of satellite rainfall estimation were evaluated by comparison with rainfall gauges data acquired between 2005 and 2007 in the Andean Altiplano watershed. Comparisons were done on annual, monthly, 15 days and daily time scales. The results differ from one product to another and in function of the considered time scale. The evalu...
Conference Paper
Full-text available
A set of altimetry-based rating curves have been obtained by polynomial fit of ENVISAT water stages and discharges obtained from MGB-IPH model, with constraints on parameters values. The rated discharges, e.g. the discharge obtained from ENVISAT heights through the rating curves were successfully validated towards simulated discharges (meanEns = 0,...
Article
Full-text available
The new Global Digital Elevation Model (GDEM v2) has been available since 17 October 2011. With a resolution of approximately 30 m, this model should provide more accurate information than the latest version of Shuttle Radar Topographic Mission (SRTM v4) with a resolution of 90 m outside of the USA. The accuracies of these two recently released dig...
Article
Full-text available
One critical concern for Thailand reservoirs which are used for irrigated agriculture (mainly paddy rice) and aquaculture is the lack of information on contamination from trace metal element (TME) in waters and biological compartments of the reservoirs. TME are both from natural and anthropogenic origins and may affect the quality of lake waters an...
Article
Full-text available
Diurnal variations in surface circulation, heat budget and thermal structure were investigated in a tropical reservoir using a synergistic approach that combines in situ observations, remote-sensing data and numerical modelling. The study area, the Itumbiara Reservoir (Brazil) at the beginning of the austral winter, is characterized by the presence...