32181 research outputs found
Sort by
Genetic diversity of the Indian prawn (<i>Fenneropenaeus indicus</i>) along the coastline of Madagascar
Get PDFPrediction of wave field generation performance for the new Coastal and Ocean Basin (COB) in Belgium
Get PDFNumerical modelling of changing beach morphodynamics and wave-interactions with a dike for very shallow foreshores
Get PDFVis- en zeevruchtengids voor professionele gebruikers. Bewust kiezen voor duurzame producten uit de zee
Get PDFTransnational Belgian-Dutch geological knowledge base on marine aggregates. From 3D voxel modelling to 4D cross-border environmental assessments
Get PDFA risk-based approach to cumulative effect assessments for marine management
Get PDFMarine ecosystems are increasingly threatened by the cumulative effects of multiple human pressures. Cumulative effect assessments (CEAs) are needed to inform environmental policy and guide ecosystem-based management. Yet, CEAs are inherently complex and seldom linked to real-world management processes. Therefore we propose entrenching CEAs in a risk management process, comprising the steps of risk identification, risk analysis and risk evaluation. We provide guidance to operationalize a risk-based approach to CEAs by describing for each step guiding principles and desired outcomes, scientific challenges and practical solutions. We reviewed the treatment of uncertainty in CEAs and the contribution of different tools and data sources to the implementation of a risk based approach to CEAs. We show that a risk-based approach to CEAs decreases complexity, allows for the transparent treatment of uncertainty and streamlines the uptake of scientific outcomes into the science-policy interface. Hence, its adoption can help bridging the gap between science and decision-making in ecosystem-based management
Mysterieuze vistrek: Hoe technologie een tipje van de sluier licht
Get PDFVeel vissen trekken. Ze leggen in de loop van hun leven respectabele afstanden af op zoek naar veiligheid, voedsel of een partner. In zee blijft dit reisgedrag onttrokken aan het zicht, al kom je met wat technologie al een heel eind om de ‘where-abouts’ van de meest interessante soorten te achterhalen. Een stand van zaken
Zeevraag: Kunnen sponzen bijdragen aan kankerbestrijding?
Get PDFVan alle zeeorganismen vormen sponzen de rijkste bron aan mariene natuurlijke producten inzetbaar als geneesmiddel. Ze worden ook wel de “darmen van de oceaan” genoemd omdat ze grote aantallen micro-organismen (zoals bacteriën) bevatten die het dier beschermen tegen vijanden. Aardig meegenomen is dat de stoffen die ze aanmaken ook in tal van geneeskundige toepassingen bijzonder nuttig blijken! Zo zijn er vandaag al twee bioactieve stoffen uit sponzen op de markt waarmee kanker bij mensen kan worden bestreden
Representation of dissolved organic carbon in the JULES land surface model (vn4.4_JULES-DOCM)
Get PDFCurrent global models of the carbon (C) cycle consider only vertical gas exchanges between terrestrial or oceanic reservoirs and the atmosphere, thus not considering the lateral transport of carbon from the continents to the oceans. Therefore, those models implicitly consider all of the C which is not respired to the atmosphere to be stored on land and hence overestimate the land C sink capability. A model that represents the whole continuum from atmosphere to land and into the ocean would provide a better understanding of the Earth's C cycle and hence more reliable historical or future projections. A first and critical step in that direction is to include processes representing the production and export of dissolved organic carbon in soils. Here we present an original representation of dissolved organic C (DOC) processes in the Joint UK Land Environment Simulator (JULES-DOCM) that integrates a representation of DOC production in terrestrial ecosystems based on the incomplete decomposition of organic matter, DOC decomposition within the soil column, and DOC export to the river network via leaching. The model performance is evaluated in five specific sites for which observations of soil DOC concentration are available. Results show that the model is able to reproduce the DOC concentration and controlling processes, including leaching to the riverine system, which is fundamental for integrating terrestrial and aquatic ecosystems. Future work should include the fate of exported DOC in the river system as well as DIC and POC export from soil