35 publication(s) trouvée(s)
Article scientifique
Coupling of soil carbon and water dynamics in two agroforestry systems in Malawi
Consequences of climate change are likely to pose severe challenges on agriculture in Southern Africa. Agroforestry systems (AFSs) can potentially …
Article scientifique
Wet and dry seasons modulate coastal coccolithophore dynamics off South-western Nigeria (Gulf of Guinea)
Coccolithophores are calcifying unicellular phytoplankton at the base of the marine food web, playing a key role in pelagic calcium …
Article scientifique
Mercury contamination in staple crops impacted by artisanal and small-scale gold mining (ASGM): stable Hg isotopes demonstrate dominance of atmospheric uptake pathway for Hg in crops
This study investigates mercury (Hg) biogeochemical cycling and Hg uptake mechanisms in three common staple crops at a contaminated farm …
Article scientifique
Marine snow morphology drives sinking and attenuation in the ocean interior
Simultaneous measurements of marine snow (particles larger than 600 µm) morphologies, estimates of their in situ sinking speeds, and midwater …
Article scientifique
Depth effects of long-term organic residue application on soil organic carbon stocks in central Kenya
In arable soils, a substantial portion of soil organic carbon (SOC) is stored below the plough layer. To develop sustainable …
Article scientifique
Biogeochemical functioning of Lake Alaotra (Madagascar): a reset of aquatic carbon sources along the land–ocean aquatic continuum
Our understanding of the role of tropical lakes in regional carbon budgets remains hampered by a lack of data covering …
Article scientifique
Seasonality and synchrony of photosynthesis in African forests inferred from spaceborne chlorophyll fluorescence and vegetation indices
Global atmospheric carbon dioxide concentrations are largely driven by changes in fossil fuel emissions and terrestrial photosynthesis, of which tropical …
Article scientifique
Detection of fast-changing intra-seasonal vegetation dynamics of drylands using solar-induced chlorophyll fluorescence (SIF)
Dryland ecosystems are the habitat supporting 2 billion people on Earth, and they strongly impact the global terrestrial carbon sink. …
Article scientifique
Spatiotemporal variability of CO 2 , N 2 O and CH 4 fluxes from a semi-deciduous tropical forest soil in the Congo Basin
Tropical forests play an important role in the greenhouse gas exchange between the biosphere and atmosphere. Despite having the second …
Article scientifique
Elephant megacarcasses increase local nutrient pools in African savanna soils and plants
African elephants ( Loxodonta africana ) are the largest extant terrestrial mammals, with bodies containing enormous quantities of nutrients. Yet, …
Article scientifique
Selecting allometric equations to estimate forest biomass from plot- rather than individual-level predictive performance
In the context of global change, it is essential to quantify and monitor the carbon stored in forests. Allometric equations …
Article scientifique
Plutonium concentrations link soil organic matter decline to wind erosion in ploughed soils of South Africa
Loss of soil organic matter (SOM) from arable land poses a serious threat to soil fertility and crop yields, and …
Article scientifique
Seasonal and spatial pattern of dissolved organic matter biodegradation and photodegradation in boreal humic waters
Studying the competitive effects of microbial and light-induced transformation of dissolved organic matter (DOM) and trace metals is crucially important …
Article scientifique
Modeling integrated soil fertility management for maize production in Kenya using a Bayesian calibration of the DayCent model
Sustainable intensification schemes such as integrated soil fertility management (ISFM) are a proposed strategy to close yield gaps, increase soil …
Article scientifique
Influence of oxygen minimum zone on macrobenthic community structure in the northern Benguela Upwelling System: a macro-nematode perspective
Understanding the dynamics of marine ecosystems, particularly the benthic communities, is crucial for predicting the impacts of climate change and …
Article scientifique
Thermophilisation of Afromontane forest stands demonstrated in an elevation gradient experiment
Abstract. The response of tropical trees and tree communities to climate change is crucial for the carbon storage and biodiversity …
Article scientifique
Temperature sensitivity of soil organic carbon respiration along a forested elevation gradient in the Rwenzori Mountains, Uganda
Abstract. Tropical montane forests store high amounts of soil organic carbon (SOC). However, global warming may affect these stocks via …
Article scientifique
Stable isotope profiles of soil organic carbon in forested and grassland landscapes in the Lake Alaotra basin (Madagascar): insights in past vegetation changes
Abstract. The extent to which the central highlands of Madagascar were once covered by forests is still a matter of …
Article scientifique
Assessing the impacts of agricultural managements on soil carbon stocks, nitrogen loss, and crop production – a modelling study in eastern Africa
Abstract. Improved agricultural management plays a vital role in protecting soils from degradation in eastern Africa. Changing practices such as …
Article scientifique
Mercury accumulation in leaves of different plant types – the significance of tissue age and specific leaf area
Abstract. Mercury, Hg, is one of the most problematic metals from an environmental perspective. To assess the problems caused by …
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