Search publications of the members of the Royal Belgian institute of natural Sciences
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Analysis of high frequency geostationary ocean colour data using DINEOF
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A high-resolution DEM for the Top-Palaeogene surface of the Belgian Continental Shelf
- A 1:250,000 scale map of the surface of the Top-Palaeogene for the Belgian Continental Shelf was created based on extensive analyses of older and recent geological and geophysical datasets. The Top-Palaeogene surface is an important polygenetic unconformity that truncates older strata of the Palaeogene and to a smaller extent some of Neogene age from the overlying Quaternary deposits. As such it represents the base of the latter. The represented surface has been diachronously shaped and reworked through Late Quaternary times by different geological processes (e.g. fluvial, marine, estuarine, periglacial). Additionally, the offshore surface has been attached to the landward Top-Palaeogene surface and was transformed into a uniform 3D surface allowing new and better interpretations to be used in fundamental and applied research underpinning both scientific purposes (e.g. geology, archaeology, palaeogeography), and commercial applications (e.g. wind farms, aggregate extraction, dredging).
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Sympatric Dreissena species in the Meuse River: towards a dominance shift from zebra to quagga mussels
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The Early Carboniferous progymnosperm Protopitys: new data on vegetative and fertile structures, and on its geographic and stratigraphic distribution
- We review progress made during the last 25 years in our understanding of the Protopityales, Early Carboniferous plants belonging to the extinct group of the progymnosperms. Recent studies support previous observations that the only genus of this order, Protopitys, included large arborescent plant with trunks up to 1 m in diameter. All branch orders had an oval eustele, secondary xylem with small rays and tracheid pitting ranging from circular bordered to scalariform bordered, and vascular traces to lateral appendages emitted in an alternate to subopposite distichous arrangement. Leaf morphology remains unknown. New material also confirms that fertile organs of Protopitys consist of branching systems bearing elongated sporangia terminally. Spores have a perispore and range in two size groups, which has been interpreted as a primitive stage of heterospory. The dense wood and fertile parts of Protopitys are comparable to those of the aneurophytalean progymnosperms of the Devonian, but Protopitys is distinct by its eustelic primary vascular system, and its affinities are still uncertain. The genus is now documented from at least nine localities in Europe, North America and Australia. Recent discoveries also indicate that it was present through the whole Mississippian, from the middle Tournaisian to the Serpukhovian.
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Brabantophyton, a new genus with stenokolealean affinities from a Middle to earliest Upper Devonian locality from Belgium
- A new taxon with stenokolealean affinities, Brabantophyton runcariense gen. et sp. nov., is described from seven pyrite permineralized axes collected from the mid Givetian to earliest Frasnian (late Middle to earliest Upper Devonian) locality of Ronquières (Belgium). The specimens include stems and lateral organs. The stems are characterized by a protostele dissected into three primary ribs, each of them dividing into two secondary ribs. The protostele shows a central protoxylem strand and numerous strands distributed along the midplanes of the ribs. The vascular supply to lateral organ is composed of two pairs of traces, produced at the same time by the two ribs issued from a single primary rib of the protostele. Within each pair, the shape and the size of the traces are unequal: one is T-shaped and the other is oval to reniform. The T-shaped traces of each pair face each other. The inner cortex of the lateral organs is parenchymatous and the outer cortex is sparganum-like. The specimens of Brabantophyton runcariense show many similarities with the stenokolealean genus Crossia virginiana Beck and Stein, but the vascular supply of lateral organs of the latter consists of a more symmetrical and distinctively simpler pair of traces. Brabantophyton represents the first report of the Stenokoleales in southeastern Laurussia. The characteristics of the Brabantophyton protostele compare better with the anatomy of the radiatopses, and, within the latter, particularly with basal seed plants.
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DNA barcoding Congolese snakes
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Validation of the DNA barcoding approach to survey ant communities in the Ecuadorian Andes
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Spinnennieuws uit de wereld.
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Age and origin of Australian Bennelongia (Ostracoda, Crustacea)
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Verspreidingspatronen en bedreigingen van de arthropodenfauna van het Schelde-estuarium.
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From Naples 1963 to Rome 2013 - A brief review of how the International Research Group on Ostracoda (IRGO) developed as a social communication system
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DNA barcoding of fire and thief ants (genus Solenopsis) of the Ecuadorian Andes as a tool for biodiversity research
- DNA BARCODING OF FIRE ANTS AND THIEF ANTS (GENUS SOLENOPSIS) OF THE ECUADORIAN ANDES AS A TOOL FOR BIODIVERSITY RESEARCH SONET, G. (1), Nagy, Z. T. (1), Jacquemin, J. (2), Wauters, N. (2), Delsinne, T. (2), Leponce, M. (2) (1) Joint Experimental Molecular Unit, Royal Belgian Institute of Natural Sciences, Brussels & Royal Museum for Central Africa, Tervuren, Belgium (2) Royal Belgian Institute of Natural Sciences & Université Libre de Bruxelles, Belgium Lightning Talk, Barcoding Insects 2, Napier 208, Friday, 15:00 to 15:07 Poster Location: B25 Members of the genus Solenopsis are among the most abundant ants in tropical rainforests. They are represented by more than 200 described species worldwide and some are dreadful invasive species. The identification to the species level is hampered by a dearth of diagnostic morphological characters and represents a serious limitative step in biodiversity inventories and in the study of invasive species. We set up and validated a DNA barcoding procedure to identify ants of the genus Solenopsis collected in the Podocarpus National Park of the Ecuadorian Andes. Complete specimens were used for DNA extraction and subsequently preserved as vouchers to allow further morphological analysis. More than 14 new molecular operational taxonomic units were identified by the standard DNA barcode fragment. In some cases specimens from a single morpho-species occurring at different altitudes could be distinguished. This study resulted in an appropriate laboratory protocol and a reference library useful to identify ants of the genus Solenopsis in the Ecuadorian Andes.
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Belgian Network for DNA Barcoding
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Redescriptions of six species of Ilyodromus Sars, 1894 (Crustacea, Ostracoda, Cyprididae) from New Zealand and Eastern Australia
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Species identification of forensically important flies using DNA barcoding
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DNA barcoding in European and African Accipiter (Accipitridae: Falconiformes)
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Linking present environment and reproductive modes segregation (Geographic parthenogenesis) in Eucypris virens (Crustacea: Ostracoda)
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Een faunistische en ecologische bijdrage tot van de spinnenfauna van zuid en oost Belgie. Deel 1.
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DNA barcoding of reptiles: practical aspects
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Obituary - In memorium of Dr. Chris King (December 1943 - January 2015)
