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In Situ Mortality Experiments with Juvenile Sea Bass (Dicentrarchus labrax) in Relation to Impulsive Sound Levels Caused by Pile Driving of Windmill Foundations.
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In situ observations of suspended particulate matter plumes at an offshore wind farm, southern North Sea
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Suspended particulate matter (SPM) plumes associated with the monopile foundations of the Belgian offshore wind farm (OWF) Belwind I were acoustically profiled by means of a Doppler current profiler (ADCP). Together with the analysis of a bottom lander dataset of optical and acoustic backscatter sensors (OBSs and ADPs respectively), the spatiotemporal SPM plume dynamics were inferred. The fieldwork comprised (1) near-bed measurements of hydrodynamics and SPM concentrations in the direct vicinity of the wind turbines, by means of a bottom lander over a spring–neap cycle in May 2010; this dataset represents a typically tidedriven situation because there was no significant meteorological forcing during the measurement period; (2) additional vessel-based measurements conducted in May 2013 to capture the SPM plumes inside and outside the OWF over part of a tidal cycle. Both in situ datasets revealed that the SPM plumes were generated at the turbine piles, consistent with aerial and space-borne imagery. The SPM plumes are well aligned with the tidal current direction in the wake of the monopiles, concentrations being estimated to reach up to 5 times that of the background concentration of about 3 mg/l. It is suggested that the epifaunal comunities colonizing the monopile surface and the protective rock collar at the base play a key role as source of the suspended matter recorded in the plumes. The organisms filter and trap fine SPM from the water column,resulting in predominant accumulation of SPM, including detritus and (pseudo-) faeces, at the base of the piles. When tidal currents exceed a certain velocity, fine particles in the nearbed fluff layer are re-suspended and transported downstream in the wake of the piles.
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In the treetops of Papua New Guinea. . In XXII Simposio de Mirmecologia, 18-22 October, pp. 159, Ilhéus, Bahia, Brasil.
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Papua New Guinea rainforests are among the most biodiverse on Earth. They still cover extensive areas but are being altered at a rapid rate. Their biodiversity is still largely unexplored especially in the treetops, called the canopy. For exploring the canopy biodiversity, new tools based on hot air or helium balloons are being developed. They allow collecting in situ plants and insects. Ants reign in the canopy. They are sometimes found living inside extraordinary epiphytes, which adapted their structure to accommodate the ants. For protecting native rainforests, an innovative approach, linking biodiversity research and capacity building, is implemented. Gifted naturalists, called parataxonomists and paraecologists, are recruited in villages and trained by internationally renowned scientists. Research stations create local employment. This source of income added to money from sponsors allow local communities to obtain access to a higher level of education and health care without having to give in to the pressure related to deforestation. (Author & director: Maurice Leponce, 2015, HD, 16min)
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In-situ trace element and Sr isotope signature of apatite: a new key to unravelling the genesis of polymetallic mineralisation in black shales (Early Cambrian Niutitang Formation, Southern China)
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RBINS Staff Publications 2022
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Incised Pleistocene valleys in the Western Belgium coatsal plain: Age, origins and implications for the evolution of the Southern North Sea basin
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RBINS Staff Publications 2016
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Inclusiveness and Diversity in Citizen Science
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RBINS Staff Publications 2021
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Incongruence between molecular phylogeny and morphological classification in amphipod crustaceans: A case study of Antarctic lysianassoids
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In Antarctic waters, the superfamily Lysianassoidea is one of the most important amphipod groups both in terms of species number and abundance. Dominant members of this superfamily are species of the orchomenid complex, found throughout the Southern Ocean. This study presents the first molecular phylogenetic analysis based on a representative subset of the Antarctic species belonging to different orchomenid genera and hence provides a framework for a systematic revision of these taxa. The current classification of the orchomenid genera is mainly based on mouthpart morphology. The validity of these morphological characters was assessed by resolving phylogenetic relationships using nuclear 28S rRNA and mitochondrial cytochrome oxidase subunit I sequences. The molecular data rejected most of the previously proposed taxonomic subdivisions within this complex. The genera Abyssorchomene and Orchomenella as well as the subgenus Orchomenopsis appeared to be non-monophyletic. This implies that the supposed diagnostic characters are likely a result of convergent evolution. Further, our results indicated the necessity of a revision of the family-level systematics.
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Index to hydrobiologia, Volumes 76-125 (1981-1985)
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RBINS Staff Publications
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India as a “Noah’s Ark” before Collision with Eurasia: Palaeoenvironment and Palaeobiogeography of the Continental Early Eocene Vertebrate Fauna of Gujarat
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For the past twenty years, an Indian-American-Belgian team carried out twelve seasons of collaborative fieldwork in search of vertebrates from the Cambay Formation in lignite mines of Gujarat, western India. Here is a summary of our main discoveries in the Vastan, Mangrol, and Tadkeshwar mines, including an updated overview of the whole vertebrate fauna. The fauna is around 54.5 million years old, representing tropical rainforest conditions in a coastal brackish palaeoenvironment. It includes the earliest modern mammals from the Indian subcontinent as well as endemic taxa. The most important result at the palaeobiogeographical level is the discovery of several vertebrate taxa of Gondwanan affinities, indicating that the early Eocene was a crucial period in India when Laurasian taxa with western European affinities co-existed with relict taxa from Gondwana before the actual collision of India and Eurasia. Terrestrial faunas could have dispersed to or from Europe when the Indian subcontinent came into contact, episodically, with different island blocks, such as the Kohistan-Ladakh island-arc system, along the northern margin of Neotethys Ocean.
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RBINS Staff Publications 2025 OA
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Indicateurs de stress dans un échantillon d’anciens Pascuans
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RBINS Staff Publications 2016
