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Inproceedings Reference Digitization of Belgian Neanderthals Cultural Heritage Preservation and Scientific Exploitation.
Located in Library / RBINS Staff Publications
Inproceedings Reference Dinoflagellate cyst biostratigraphical and palaeoecological analysis of the early Paleogene Landana reference section, Cabinda Province, Angola
Systematic palynological analysis of the Landana section has revealed 90 distinct dinoflagellate cyst taxa and has resulted in the establishment of a novel preliminary dinoflagellate cyst zonation. The zonation comprises three distinct dinoflagellate cyst zones and five unzoned, yet otherwise distinct intervals, spanning the ?Danian/early Selandian to Eocene/early Oligocene. The Landana record, which represents the first extensive sub-equatorial African Paleogene dinoflagellate cyst record, was extensively compared and correlated with contemporaneous records relatively close by in the Gulf of Guinea, as well as with records from more distant locations such as Antarctica, Australia and New Zealand. The ?Danian–Selandian segment of the record is characterized by the presence of taxa such as Alterbidinium? pentaradiatum, Isabelidinium? viborgense, Isabelidinium cingulatum and Spinidinium densispinatum. The Thanetian through Ypresian succession is far more fragmentary and is devoid of any significant marker taxa. The few dinoflagellate cyst-bearing samples in the uppermost part of the record point to an Eocene to early Oligocene age. The dinoflagellate cyst assemblages are very variable, with several dinoflagellate cyst taxa and ecological groups and complexes rising to dominance successively. Overall high TOC values, significant enhancements in %TP and intervals dominated by presumably heterotrophic dinoflagellate cysts, suggest periods of significant palaeoproductivity and nutrient availability resulting from either heightened terrestrial influence or enhanced upwelling. The overall dinoflagellate cyst assemblages concur with the recorded marine vertebrate faunas and the available sedimentological data that point to a coastal/shallow marine setting for the ?Danian–Ypresian succession. This work was supported by the Belgian Science Policy Office under Grant BR/121/A3/PALEURAFRICA.
Located in Library / RBINS Staff Publications 2019
Article Reference Dinosaur ecology and climate in Eastern Siberia during the Late Cretaceous inferred from stable isotopes
Located in Library / RBINS Staff Publications 2017
Article Reference Dinosaur egg nests, mammals and other vertebrates from a new Maatsrichtian site of the Hateg Basin (Romania)
The Toteşti-baraj site is located in the central part of the Haţeg Basin, in the northwestern part of the South Carpathians. According to the geological map of the area, the outcropping sediments belong to the Maastrichtian Sânpetru Formation. However, the general appearance in the field of the studied sediments is rather different from the sediments of the type locality of the Sânpetru Formation. The facies distribution observed at Toteşti-baraj indicates a fluvial palaeoenvironment with sandy channel infills and mainly black silty and clayey overbank deposits. At the end of spring 2001, the first Belgo-Romanian excavation campaign discovered in this locality more than forty eggs organised in 11 nests. These eggs may be referred to as the oofamily Megaloolithidae and closely resemble the eggs previously described in the Haţeg Basin and the French oospecies Megaloolithus siruguei. The locality was probably frequented as a nesting site during a large time span, as dinosaur nests have been found at different stratigraphic levels. Screen-washing of 1500 kilograms of sediments collected around the nests provided a particularly diversified microvertebrate fauna. Amphibians are represented by Albanerpetontidae and discoglossid Anura. Two types of sciencomorph lepidosaurians co-existed in this locality. Dinosaur teeth are particularly diversified in the sample collected at Totesti-Barraj. Besides hadrosauroid and nodosaurid ornithischians, at least five different kinds of isolated theropod teeth may be distinguished. But the most remarkable collected micro-remains are mammal teeth, representing at present the richest multituberculate collection from the Upper Cretaceous of Europe. The presence of at least two taxa of the family Kogaionidae (Multituberculata) is attested by fourteen complete teeth and several tooth fragments of mammals. Micropalaeontological analysis and study of vertebrates are in process in order to determine more precisely the age, the faunal content and the palaeoenvironment of the Totesti-Baraj locality.
Located in Library / RBINS Staff Publications 2016
Article Reference Directed seed dispersal by western lowland gorillas (G. g. gorilla) at nest sites in Southeast Cameroon: implications for regeneration of logged forests
Located in Library / RBINS Staff Publications
Unpublished Reference Discriminating birds from noise in bird radar data from an offshore wind farm
Located in Library / RBINS Staff Publications
Conference Reference Dispersal dynamics of early life stages in the ocean
Located in Library / RBINS Staff Publications
Inproceedings Reference 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.
Located in Library / RBINS Staff Publications
Unpublished Reference Distance learning to help African countries improve their biodiversity knowledge networks.
Located in Library / RBINS Staff Publications
Proceedings Reference Distinguishing megathrust from shallow intraplate earthquakes using lacustrine turbidites (Laguna Lo Encanado, Central Chile)
One of the main challenges in seismically active regions is differentiating paleo-earthquakes resulting from different fault systems, such as the megathrust versus shallow intraplate faults in subductions settings. Such differentiation is, however, key for hazard assessments based on paleoseismic records. Laguna Lo Encanado (33.7°S; 70.3°W; 2492 m a.s.l.) is located in the Central Chilean Andes, 50 km east of Santiago de Chile, a metropole with over 5,000,000 inhabitants. During the last century the study area experienced 3 large megathrust earthquakes (1906, 1985 and 2010) and 2 intra-continental plate earthquakes (1942 and 1958) (Lomnitz, 1960). While the megathrust earthquakes cause Modified Mercalli Intensities (MMIs) of VI to VII at the lake (Van Daele et al., 2015), the shallower intraplate earthquakes cause peak MMIs up to IX (Sepulveda et al., 2008). Here we present a turbidite record of Laguna Lo Encanado going back to 1900 AD. While geophysical data (3.5 kHz subbottom seismic profiles and side-scan sonar data) provides a bathymetry and an overview of the sedimentary environment, we study 15 short cores in order to understand the depositional processes resulting in the encountered lacustrine turbidites. All mentioned earthquakes triggered turbidites in the lake, which are all linked to slumps in proximal areas, and are thus resulting from mass wasting of the subaquatic slopes. However, turbidites linked to the shallow intraplate earthquakes are additionally covered by turbidites of a finer-grained, more clastic nature. We link the latter to post-seismic erosion of onshore landslides, which need higher MMIs to be triggered than subaquatic mass movements (Howarth et al., 2014). While shallow intraplate earthquakes can cause MMIs up to IX and higher, megathrust earthquakes do not cause sufficiently high MMIs at the lake to trigger voluminous onshore landslides. Hence, the presence of these post-seismic turbidites allows to distinguish turbidites triggered by shallow intraplate earthquakes from those triggered by megathrust earthquakes. These findings are an important step forward in the interpretation of lacustrine turbidites in subduction settings, and will eventually improve hazard assessments based on such paleoseismic records in the study area, and in other subduction zones.
Located in Library / RBINS Staff Publications 2017