Search publications of the members of the Royal Belgian institute of natural Sciences
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ECOCHEM validatierapport - validatie van de analysekarakteristieken parameter FEOFYTINE A MATRIX WATER
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The fern Stauropteris oldhamia Binney: New data on branch development and adaptive significance of the hypodermal aerenchyma
- Well-preserved specimens of Stauropteris oldhamia are described. The material was collected in the early 1920s from the Lower Westphalian (Early Pennsylvanian) Saurue seam from Belgium. The fossil plants occur as permineralized axes fragments within a coal ball. This study confirms most of the interpretations made by previous researchers. The observation of immature axis however suggests a less regular organization than previously interpreted beyond the three first branching orders. We also highlight the presence of profusely and dichotomously branched aphlebiae, the lack of laminate organs as well as the presence of hypodermal aerenchyma in all plant parts. We interpret these features as part of a very specialized assimilatory apparatus indicating an adaptation to a humid swamp environment.
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New insights into Mediterranean Gallo-Roman farming: a closer look at archaeological wells in Southern France
- Archaeological wells have recently become a major source of palaeoenvironmental and palaeoeconomic information, thus, providing the background for past day-to-day material life. At the site of La Lesse–Espagnac (Hérault), combined evidence from archaeobotany, morphometry and palynology, from two wells, offers a coherent picture of the diversity of the local Gallo-Roman farming economy, whose development was fuelled by the proximity of a major urban centre (Colonia Urbs Julia Septimanorum Baeterra—present day Béziers). The ever present vine growing and wine making were complemented by other food crops such as fruit trees, vegetables, condiments and cereals. The dense network of farming establishments and the scale of their production could only aggravate the extent of anthropogenic impact on the local natural woodlands and would explain the very minor role of typical thermophilous trees in the pollen diagram. The overmultiplication of these farming establishments may explain why some of them apparently ran out of momentum and eventually failed.
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Large canids at the Gravettian Předmostí site, the Czech Republic: The mandible
- Efforts to identify Paleolithic dogs or incipient dogs have been based mainly on examination of complete or nearly complete crania. Complete skulls are, however, very rare in the archaeological record. Because canid mandible are far more frequently found in Pleistocene assemblages, the objective of this study is to investigate whether it is possible to differentiate these jaws by metric and osteomorphological methods in two morphotypes: Paleolithic dogs and Pleistocene wolves. This paper is mainly based on the very rich canid assemblage from the Gravettian Předmostí site in the Czech Republic, but also includes a few mandible from several other European Paleolithic sites. This study provides additional evidence of the existence at Předmostí of the two canid morphotypes. The metric data indicate that the mandible of the Paleolithic dogs are shorter than those from Pleistocene wolves in all tested measurements of length, and the carnassial crown length is shorter in Paleolithic dogs compared with the length of this tooth in Pleistocene wolves. Furthermore, in eight of nine indexes, the Paleolithic dogs differ significantly from the Pleistocene wolves. The mandible of Paleolithic dogs differ also in non-metric features from the Pleistocene wolves: they present a high frequency of crowded premolars and backwards-oriented apex of the coronoid. This paper furthermore confirms that Paleolithic dogs occur at two late Upper Paleolithic sites (Eliseevichi, Verholenskaya) where previous studies had indicated their presence. In addition, we document the presence of Paleolithic dogs at another Gravettian site, Kostenki-8.
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Ceci n'est pas untextbackslashldots fossé de l'âge du Bronze moyen
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Biostratigraphic significance of brachiopods near the Devonian–Carboniferous boundary
- The biostratigraphic significance of selected uppermost Famennian (Upper Devonian) and lower Tournaisian (Mississippian) brachiopod genera, belonging to the orders Rhynchonellida (e.g. Araratella), Spiriferida (e.g. Sphenospira, Prospira), Spiriferinida (Syringothyris) and Productida (except Chonetidina), is discussed. Owing to the difficulties of identifying productidine and strophalosiidine genera, in contrast to rhynchonellides and spiriferides, the biostratigraphic potential of the former has generally been overlooked. Brachiopods flourished in neritic environments that were unfavourable for conodonts and ammonoids. In the absence of the latter traditional marker fossils, they are potentially important for locating the Devonian–Carboniferous boundary in shallow water depositional settings in conjunction with rugose corals and foraminifers. On a worldwide scale, further work is required to reach a better assessment of the aftermath of the Hangenberg biological Crisis on brachiopods, notably in revising the faunas from the classical areas of the Famennian and Tournaisian stages in Western Europe.
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Early modern human settlement of Europe north of the Alps occurred 43,500 years ago in a cold steppe-type environment
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Insight into the development of a carbonate platform through a multi-disciplinary approach: a case study from the Upper Devonian slope deposits of Mount Freikofel (Carnic Alps, Austria/Italy)
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Étude des pierres à aiguiser provenant de cinq sites gallo-romains de la région des Vallées des Eaux-Vives (Sud-Ouest de la Province de Namur, Belgique).
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Boussu/Boussu : le cimetière paroissial (7e-19e siècle). Seconds résultats de l’étude anthropologique.
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Taxonomic study of entomopathogenic nematodes (Nematoda: Steinernematidae, Heterorhabditidae) from Benin.
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Highly pathogenic H5N1 avian influenza in wild waterfowl, Evros Delta, Greece.
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First results on AI seroprevalence on Mute Swans in Belgium.
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Spatial analysis of Avian Influenza.
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Espèces invasives : oiseaux d'eau non indigènes à Bruxelles. Incidences, évaluation des risques et panel de mesures.
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Feasability study of a capture and testing system for wild birds to set up an ”early warning system” for West Nile virus in horse and bird in Belgium.
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In natura follow-up of LPAI infections among wild waterfowl.
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Assessment of H5N1 high pathogenic avian influenza virus persistence in water from different aquatic bird habitats.
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Monitoring through ringing: Distribution and importance of the ringing activity in Belgium and interest of the gathered data. “Monitoring, indicators and targets".
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Using Belgian Ringing Data to Estimate Bird Population Trends: A comparative Analysis. “Monitoring, indicators and targets".
