Search publications of the members of the Royal Belgian institute of natural Sciences
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Anthracologisch onderzoek van houtskoolbranderskuilen
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Notes on Chersodromia from Portugal, Spain and France with the description of a new brachypterous species (Diptera, Hybotidae, Tachydromiinae)
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The genus Tachydromia Meigen (Diptera: Hybotidae) from Africa
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Distribution of the genus Culicoides (Diptera: Ceratopogonidae) along the Scheldt and its tributaries in Flanders with special attention for the pest species Culicoides riethi
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Asilidae (Diptera) from mangrove, an unusual habitat fro robber flies (Souhteast Asia, Singapore)
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Sélection de charbon de bois pour datation radiocarbone Villers-le-Bouillet – le Marais
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Chapter 17. Flight interception traps for arthropods
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Sélection de charbon de bois pour datation radiocarbone Villers-la Ville
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Archaeobotanical evidence on the Neolithisation of Northeast Bulgaria in the Balkan-Anatolian context: chronological framework, plant economy and land use
- The study presents archaeobotanical analyses of four Early Neolithic sites (Koprivets, Orlovets, Dzhulyunitsa, Samovodene) from Northeast Bulgaria. Those archaeobotanical data are linked to comprehensive series of 14C dates for the early Neolithic in northeastern Bulgaria allowing their attribution to high resolution radiocarbon chronology. In the considered sites the dominating cereal crop during the Early Neolithic is hulled barley (Hordeum vulgare var. vulgare), followed by einkorn (Triticum monococcum) and few emmer (Triticum dicoccum) what is a clear difference from the southern parts of Bulgaria where during the early Neolithic the dominating cereal crops are einkorn and emmer. Further principal crops, present from the earliest phases of the Neolithic in the region are lentil – Lens culinaris, pea – Pisum sativum, grass pea – Lathyrus sativus/cicera and flax – Linum usitatissimum. Wide spectrum of finds of gathered plants (at least 11 taxa) reflects the use of the natural vegetation resources. Useful for reconstructing the vegetation and land use in the Neolithic are also wood charcoal identifications, indicating apart of oak forests also presence of open vegetation, riparian forests and wetlands. The relatively open vegetation in the surrounding of the early Neolithic settlements could be one of the reasons why the corresponding locations were chosen by the Neolithic people to settle there. On the other hand this open vegetation could be caused by the Neolithic land use and animal husbandry, which have also led to certain reduction of the forests in the immediate surroundings of the settlements.
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A link between host dispersal and parasite diversity in two sympatric cichlids of Lake Tanganyika
- 1. A major goal in ecology is to unravel how species assemblages emerge and how they are structured across the landscape. Host–parasite systems are particularly interesting in this context, as limited host dispersal may promote the differentiation of parasite communities. 2. We examined whether the patterns of species diversity in Cichlidogyrus, a genus of monogenean parasitic flatworms with a direct life cycle, are consistent with the hypothesis that parasite diversity is driven by host dispersal. This was carried out by comparing two sympatric cichlid hosts (Tropheus moorii and Simochromis diagramma) with contrasting dispersal abilities. Genetic connectivity among host populations along the Zambian shoreline of Lake Tanganyika was estimated using microsatellite genotyping. Cichlidogyrus parasites were isolated and identified morphologically to the species level. 3.Simochromis diagramma, a host with a high dispersal capacity, was infected by a low number of Cichlidogyrus species, and the parasite assemblages were similar among host populations. In contrast, T. moorii, a host with a low dispersal capacity, was infected by a large number of Cichlidogyrus species, and the parasite assemblages differed strongly among host populations. These outcomes were thus as expected from the hypothesis. 4. Because of the strong host specificity of these Cichlidogyrus species, a lack of connectivity among host populations might facilitate allopatric speciation of the parasite.
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A remarkable new species of Rhaphium Meigen (Diptera, Dolichopodidae) from Sri Lanka
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Srilankamyia - a new dolichopodine genus (Diptera, Dolichopodidae).
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The 70the Birthday Anniversary of Prof. Dr. Oleg Negrobov
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Using DNA barcodes for diversity assessment in Hybotidae (Diptera, Empidoidea)
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Een nieuwe verspreidingsatalas van de loopkevers en zandloopkevers (Carabidae) in Belgie. Rapporten van het Instiuut voor Natuur- en Bosonderzoek 2008
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Description d'une nouvelle espèce afrotropicale d'Anomala Samouelle, 1819 de Côte d'Ivoire (Coleoptera, Melolonthidae, Rutelinae, Anomalini)
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Contribution à l'étude des Rutelinae du Sénégal (Coleoptera, Scarabaeoidea, Melonthidae, Rutelinae)
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Description of two new species of Anomala Samouelle (Coleoptera, Scarabaeoidea, Scarabaeidae, Rutelinae)
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Climate variability and associated vegetation response throughout Central and Eastern Europe (CEE) between 60 and 8 ka
- Abstract Records of past climate variability and associated vegetation response exist in various regions throughout Central and Eastern Europe (CEE). To date, there has been no coherent synthesis of the existing palaeo-records. During an \INTIMATE\ meeting (Cluj Napoca, Romania) focused on identifying \CEE\ paleo-records, it was decided to address this gap by presenting the palaeo-community with a compilation of high-quality climatic and vegetation records for the past 60–8 ka. The compilation should also serve as a reference point for the use in the modelling community working towards the \INTIMATE\ project goals, and in data-model inter-comparison studies. This paper is therefore a compilation of up to date, best available quantitative and semi-quantitative records of past climate and biotic response from \CEE\ covering this period. It first presents the proxy and archive used. Speleothems and loess mainly provide the evidences available for the 60–20 ka interval, whereas pollen records provide the main source of information for the Lateglacial and Holocene. It then examines the temporal and spatial patterns of climate variability inferred from different proxies, the temporal and spatial magnitude of the vegetation responses inferred from pollen records and highlights differences and similarities between proxies and sub-regions and the possible mechanisms behind this variability. Finally, it identifies weakness in the proxies and archives and their geographical distribution. This exercise also provides an opportunity to reflect on the status of research in the area and to identify future critical areas and subjects of research.
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Landwirtschaft und Landnutzung in der Region von Ovčarovo-Gorata: archäobotanische Forschungen zum Frühneolithikum in Nordostbulgarien
- There is no archaeobotanical evidence from the site Ovčarovo-Gorata. During the excavations of the site in the 1970ties neither archaeobotanical sampling nor survey for pollen analysis in the surrounding were conducted. Those research gaps could partly be compensated by the archaeobotanical studies on the Neolithic settlements of Orlovec, Koprivec, Samovodene und Džuljunica carried out in the period of 1996-2006. The paleobotanical evidence from those sites allows to reconstruct the agriculture and land use in the region of Ovčarovo-Gorata during the Neolithic and to put them in a regional context. The current study is based on identification and analysis of charred (and few mineralised) plant remains, like seeds/fruits and charred wood. Those plant remains were extracted from the sediment samples (average volumes 10-20 litre) using manual floation. The here considered archaeobotanical data includes 31 samples, with total volume of 430 l and containing over 2400 identified plant remains. The archaeobotanical finds were analysed with the help of binocular and reflected light microscope, as well as corresponding identification literature and reference materials from the herbarium at the Department of Botany of the Sofia University. The early Neolithic samples from Džuljunica, Orlovec and from the oldest layers of Koprivec could be considered as synchronous and belong to the earliest phase of the Neolithic in the region (ca. 6100-5700 calBC). The samples from the early Neolithic layers of Samovodene (horizon 11-8) belong to the developed early Neolithic and are considered as contemporary with the period Karanovo II in Thrace and correspondently to the occupation of Ovčarovo-Gorata (ca. 5700-5400 calBC). Few of the samples (n=4) come also from the Late Neolithic (ca. 5400-4800 calBC) in the region, from Samovodene (horizon 5-3) and from Koprivec. The results of the archaeobotanical studies show the combination of the three main cereal crops (einkorn, emmer and barley) known also from the early Neolithic of Thessaly and Anatolia. In the samples from northeast Bulgaria the dominating cereal crop is the hulled barley, what is a clear difference from the southern parts of Bulgaria where in the early Neolithic the dominating cereal crops are hulled wheats – einkorn and emmer. The further principal crops, typical for the Neolithic period, are also found in the earliest phases of the Neolithic in the region. Those are a variety of pulses (lentil, pea and grass pea) as well as flax. In the late Neolithic samples there are also finds of bitter vetch. The wide spectrum of gathered plants (at least 11 taxa) reflects also the use of the natural vegetation resources from a variety of habitats in the surrounding. Further evidence which could be used for reconstructing the vegetation and land use in the Neolithic are the wood charcoal identifications from Džuljunica. Considering those sources of information it could be concluded that in the surrounding of the sites apart of oak forests also open vegetation, riparian forests and wetlands were developed. The relative open vegetation in the surrounding of the early Neolithic settlements could be one of the reasons why the corresponding locations were chosen by the Neolithic people to settle there. On the other hand this open vegetation could be caused by the Neolithic land use and animal husbandry, which have also led to certain reduction of the forests in the immediate surroundings of the settlements.
