32181 research outputs found
Sort by
Who are the cable bacteria
Get PDFIn 2010, a completely novel type of microbial metabolism was discovered in marine sediments, which induces the transport of electrons over centimetre scales. The actors behind this process are the “cable bacteria”: long (> 2cm), filamentous, multicellular(>104 cells) bacteria. Cable bacteria use the electron transport to couple redox reactions between their two key metabolic resources. The bottom cells of a cable bacteria filament oxidize sulfide, which is abundant in the deeper anoxic zone of the marine sediment. The electrons derived from the sulfide oxidation are then transported along the cells of the cable bacteria to finally arrive at the cells in the oxic part of the sediment. Here these electrons are used in the second part of the cable bacteria metabolism, the reduction of oxygen. By establishing electrical currents, the cable bacteria turn the seafloor into an “electrical ecosystem”
Ecosystem-functioning approaches for assessing and managing ecosystem services = Methodes voor evaluatie en beheer van ecosysteemdiensten op basis van ecosysteemfunctioneren
Get PDFEcosystem services are a general term for all the benefits that nature provides to humans. These include food, clean drinking water, control of greenhouse gasses, protection against floods as well as potential for recreation, a sense of well-being, … . The concept has emerged in response to the unabated loss of biodiversity and as a tool to increase support for nature and biodiversity conservation. Originally it had a main purpose of awareness raising and the most commonly used approach to assess them was to attach a value – often monetary – to land use types for their capacity to deliver certain ecosystem services. With increasing interest to include ecosystem services in spatial planning and using it to support decision-making, criticism started to grow on the lack of ecological underpinning of land-use based indicators. Because of the wide array of disciplines that the concept of ecosystem services covers, developing scientifically rigorous yet user-friendly and transparent methodologies poses a huge challenge. The main aim of this research is to develop practical methodologies to improve the consideration of ecosystem functioning in ecosystem services assessments and thus advance the implementation of ecosystem services in practice
Composition of macro-infauna and their distribution across Northern Benguela upwelling system - Namibia
Get PDFHeading South or North: novel insights on European silver eel (<em>Anguilla anguilla</em> L.) migration in the North Sea
Get PDFPaving the way for macrobenthic diversity assessment in impacted areas of the Belgian part of the North Sea using metabarcoding
Get PDFInvestigating the combined effects of climate change on ecophysiological response of offshore wind farm fouling fauna
Get PDF
