Search publications of the members of the Royal Belgian institute of natural Sciences
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In situ observations of turbidity plumes at on offshore wind farm
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Lifestyle and Ice: The Relationship between Ecological Specialization and Response to Pleistocene Climate Change
- Major climatic changes in the Pleistocene had significant effects on marine organisms and the environments in which they lived. The presence of divergent patterns of demographic history even among phylogenetically closely-related species sharing climatic changes raises questions as to the respective influence of species-specific traits on population struc- ture. In this work we tested whether the lifestyle of Antarctic notothenioid benthic and pelagic fish species from the Southern Ocean influenced the concerted population response to Pleistocene climatic fluctuations. This was done by a comparative analysis of sequence variation at the cyt b and S7 loci in nine newly sequenced and four re-analysed species. We found that all species underwent more or less intensive changes in population size but we also found consistent differences between demographic histories of pelagic and benthic species. Contemporary pelagic populations are significantly more genetically diverse and bear traces of older demographic expansions than less diverse benthic species that show evidence of more recent population expansions. Our findings suggest that the life- styles of different species have strong influences on their responses to the same environ- mental events. Our data, in conjunction with previous studies showing a constant diversification tempo of these species during the Pleistocene, support the hypothesis that Pleistocene glaciations had a smaller effect on pelagic species than on benthic species whose survival may have relied upon ephemeral refugia in shallow shelf waters. These find- ings suggest that the interaction between lifestyle and environmental changes should be considered in genetic analyses.
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Baggeren en storten
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Dredging and dumping
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Modellering van een alternatieve stortstrategie voor de onderhoudsbaggerwerken in de voorhaven van Zeebrugge
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Field Data on the Little Known and, Endangered Lepilemur Mittermeieri
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Dispersion and deposition of sediment plumes, resulting from intensive marine aggregate extraction
- Marine aggregate extraction activities, using small (2.500m3) to large (> 10.000m3) trailer suction hopper dredgers, pressurize quasi-continuous the marine ecosystem of the Belgian part of the North Sea. Since the concession zones are within a Habitat Directive Area, or nearby, potential near- and far-field impacts need investigation. Results indicated that, after 2-yrs of intensive extraction along the far offshore coarse-grained sandbanks, some fining trend was observed in the upper seabed. In the Habitat Directive area, mud enrichment has been observed over 3 consecutive years. Hitherto, no direct link can be made with the extraction activities, though the area is further monitored to assess changes in seafloor integrity.
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Apport de l'analyse pollinique du contenu ruminal dans le diagnostic de certaines intoxications végétales chez les ruminants. Examen d'un cas.
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Study of fossil feathers using infrared spectroscopy and imagery.
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The primitive ornithischian dinosaur Kulindadromeus from the Jurassic of Siberia and the origin of feathers
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Taphonomy of the Late Jurassic Kulinda Lake
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Paléoenvironnement tardiglaciaire et holocène des lacs de Pelléautier et Siguret (Hautes Alpes, France). II: Les macrorestes.
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L'analyse des végétaux conservés dans les dépôts tourbeux.
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L'analyse des macrorestes végétaux.
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Etude de l'évolution récente de la végétation dans la Fagne de Clefay, par l'analyse pollinique des "cespites" de linaigrettes et de molinies.
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L'analyse des macrorestes végétaux et la reconstitution des environnements à l'époque quaternaire.
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Data assimilation with the ensemble Kalman filter in a numerical model of the North Sea
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Le site à microlithes de l'Organais en Saintes-Reine-de-Bretagne (Loire-Atlantique).
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Miels de thym du Maroc. I. Conditions générales de la production et de la consommation des miels traditionnels et industriels dans le Haut Atlas occidental.
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L'environnement côtier des Alpes Maritimes à la fin de la transgression versilienne d'après l'étude biostratigraphique du site de l'Etoile à Nice (France).
