153167 résultats

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153167 résultats

2022

The Mosquitome : a new frontier for sustainable vector control

The emergence and rapid spread of resistance to chemical insecticides in all major mosquito vectors during the last 30 years is an emblematic evolutionary step in these mosquitoes adapting to human-made environments. Insecticide resistance seriously jeopardizes recent public health success in...

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2022

Potential microplastics impacts on African fishing resources

Microplastic (MP) pollution is increasing worldwide and affecting aquatic fauna in different ways, which endangers current aquatic resources in a still unknown extent. MP-induced threats to marine fauna are critical for developing countries, where waste treatment may be not optimal and coastal...

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2022

Evaluating the impact of using digital soil mapping products as input for spatializing a crop model : the case of drainage and maize yield simulated by STICS in the Berambadi catchment (India)

Digital Soil Mapping (DSM) can be an alternative data source for spatializing crop models over large areas. The objective of the paper was to evaluate the impact of DSM products and their uncertainties on a crop model's outputs in an 80 km(2) catchment in south India. We used a crop model called...

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2022

Knowledge gaps in economic costs of invasive alien fish worldwide

Invasive alien fishes have had pernicious ecological and economic impacts on both aquatic ecosystems and human societies. However, a comprehensive and collective assessment of their monetary costs is still lacking. In this study, we collected and reviewed reported data on the economic impacts of...

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2022

Potential impact of 1.5, 2 and 3 degrees C global warming levels on heat and discomfort indices changes over Central Africa

Investigating the effects of the increased global warming through the lens of the Paris agreements would be of particular importance for Central African countries, which are already experiencing multiple socio-political and socio-economic constraints, but are also subject to severe natural hazards...

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2022

Delayed effects of a single dose of a neurotoxic pesticide (sulfoxaflor) on honeybee foraging activity

Pesticide risk-assessment guidelines for honeybees (Apis mellifera) generally require determining the acute toxicity of a chemical over the short-term through fix-duration tests. However, potential long-lasting or delayed effects resulting from an acute exposure (e.g. a single dose) are often...

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2022

Human-vector malaria transmission model structured by age, time since infection and waning immunity

Malaria is one of the most common mosquito-borne diseases widespread in tropical and subtropical regions, causing thousands of deaths every year in the world. Few models considering a multiple structure model formulation including (i) the chronological age of human and mosquito populations, (ii) the...

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2022

NMR-based metabolic profiling and discrimination of wild tropical tunas by species, size category, geographic origin, and on-board storage condition

Tunas are among the most traded and valued fish species, and good traceability of tuna products in the world market is needed to protect both consumers and tuna stocks. To that purpose, high-resolution proton nuclear magnetic resonance (H-1 NMR) spectroscopy combined with multivariate data analysis...

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2022

Getting out of crises : environmental, social-ecological and evolutionary research is needed to avoid future risks of pandemics

The implementation of One Health/EcoHealth/Planetary Health approaches has been identified as key (i) to address the strong interconnections between risk for pandemics, climate change and biodiversity loss and (ii) to develop and implement solutions to these interlinked crises. As a response to the...

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2022

Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands

Mesopelagic communities are characterized by a large biomass of diverse macrozooplankton and micronekton (MM) performing diel vertical migration (DVM) connecting the surface to the deeper ocean and contributing to biogeochemical fluxes. In the Southern Ocean, a prominent High Nutrient Low...

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2022

Acute and chronic toxicity assessments of 17 beta-estradiol (E-2) and 17 alpha-ethinylestradiol (EE2) on the calanoid copepod Acartia clausi : effects on survival, development, sex-ratio and reproduction

Estrogens, such as the 17 beta-estradiol (E2) and the 17 alpha-ethinylestradiol (EE2), have been regarded as a global threat to aquatic ecosystems due to their pseudo-persistence, their high estrogenic activity and their toxicity towards non-target species. Data regarding their ecotoxicological...

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2022

In situ arsenic speciation at the soil/water interface of saline-alkaline lakes of the Pantanal, Brazil : a DGT-based approach

Arsenic (As) is a naturally occurring element in the Earth's crust, exhibiting toxicity towards a wide range of living organisms. Its properties and environmental dynamics are strongly regulated by its speciation, and the species As (III) and As(V) are the most commonly found in environmental...

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2022

Impacts of meander migration on the Amazon riverine communities using Landsat time series and cloud computing

River meander migration is a process that maintains biodiverse riparian ecosystems by producing highly sinuous rivers, and oxbow lakes. However, although the floodplains support communities with fish and other practices in the region, meandering rivers can directly affect the life of local...

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2022

Uranium speciation control by uranyl sulfate and phosphate in tailings subject to a Sahelian climate, Cominak, Niger

Long-term uranium mobility in tailings is an environmental management issue. The present study focuses on two U-enriched layers, surficial and buried 14.5 m, of the tailings pile of Cominak, Niger. The acidic and oxidizing conditions of the tailings pile combined with evapotranspiration cycles...

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2022

Phylogenomic relationships and historical biogeography in the South American vegetable ivory palms (Phytelepheae)

The palm tribe Phytelepheae form a clade of three genera and eight species whose phylogenetic relationships and historical biogeography are not fully understood. Based on morphological similarities and phylogenetic relatedness, it has been suggested that Phytelephas seemannii and Phytelephas...

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2022

Provenance of the Middle Jurassic-Cretaceous sedimentary rocks of the Arequipa Basin (South Peru) and implications for the geodynamic evolution of the Central Andes

The provenance of Middle Jurassic-Cretaceous sedimentary rocks deposited in the southern Peruvian Arequipa Basin has been investigated based on the measurement of 41 Sr-Sm-Nd isotopic compositions of sedimentary rocks, 993 U-Pb zircons ages, and 202 Lu-Hf zircon isotope data. The Middle Jurassic...

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2022

Using carbonate absorbance peak to select the most suitable regression model before predicting soil inorganic carbon concentration by mid-infrared reflectance spectroscopy

Mid-Infrared reflectance spectroscopy (MIRS, 4000-400 cm(-1)) is being considered to provide accurate estimations of soil inorganic carbon (SIC) contents, based on prediction models when the test dataset is well represented by the calibration set, with similar SIC range and distribution and...

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2021

In-situ variability of DOM in relation with biogeochemical and physical parameters in December 2017 in Laucala Bay (Fiji Islands) after a strong rain event

Heavy rain events alter the biogeochemical outflows, affects water quality and ecosystem health within the coastal waters of small Pacific Islands. We characterized snapshots of the optical fingerprints of dissolved organic matter (DOM) sources together with the select nutrients, biogeochemical and...

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2021

International science foresight workshop : global challenges and research gaps : the Royaumont process

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2021

Pêche côtière en province Nord : enquête sur l'efficacité des aides provinciales

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