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Inproceedings Reference Contemporary population genetic differentiation in Melarhaphe neritoides (Gastropoda: Littorinidae), a long-lived planktonic-dispersing mollusc.
Marine invertebrates with planktonic-dispersing larvae are assumed to be good dispersers over long distances. This high dispersal capacity implies a high gene flow between populations and a homogeneous population genetic structuring over wide geographic scales.The marine gastropod Melarhaphe neritoides has a long-lived planktonic larval dispersal stage and allozyme data suggest that it is genetically homogeneous over its whole European distribution area. In contrast, preliminary mtDNA sequence data uncovered a remarkable degree of genetic diversity and genetic structuring on smaller geographic scales.In order to explore this mtDNA diversity and structuring in M. neritoides we started to survey sequence variation at COI and 16S rDNA all over the Azores archipelago. These data reveal that the Azorean populations share very few haplotypes.Hence, it seems that M. neritoides with its long-lived planktonic larval stage nevertheless shows a strong local population genetic structuring and thus challenges the current paradigm that correlates modes of larval development with levels of genetic structuring. It also stresses the importance of the sampling intensity (both in terms of numbers of specimens and genetic markers) to avoid experimental biases when assessing genetic diversity
Located in Library / RBINS Staff Publications
Inproceedings Reference Contemporary population genetic differentiation in Melarhaphe neritoides (Gastropoda: Littorinidae), a long-lived planktonic-dispersing mollusc
Marine invertebrates with planktonic-dispersing larvae are assumed to be good dispersers over long distances. This high dispersal capacity implies a high gene flow between populations and a homogeneous population genetic structuring over wide geographic scales. The marine gastropod Melarhaphe neritoides has a long-lived planktonic larval dispersal stage and allozyme data suggest that it is genetically homogeneous over its whole European distribution area. By contrast, prelimi-nary mtDNA sequence data uncovered a remarkable degree of genetic diversity and genetic structuring on smaller geo-graphic scales. In order to explore this mtDNA diversity and structuring in M. neritoides, we started to survey sequence vari-ation at COI and 16S rDNA all over the Azores archipelago. These data reveal that the Azorean populations share very few haplotypes. Hence, it seems that M. neritoides with its long-lived planktonic larval stage nevertheless shows a strong local population genetic structuring and thus challenges the current paradigm that correlates modes of larval development with levels of genetic structuring. It also stresses the importance of the sampling intensity (both in terms of numbers of speci-mens and genetic markers) to avoid experimental biases when assessing genetic diversity. An
Located in Library / RBINS Staff Publications
Inproceedings Reference Contexte géologique des sites mésolithiques de la Heid de Fer et de L’Ourlaine à Becco (Theux, Belgique)
Located in Library / No RBINS Staff publications
Inproceedings Reference Contextualising skeletal analyses: combining burial context and paleodemographic data to study the social composition on St.Rombout's cemetery, Mechelen (10th-18th centuries AD)
Located in Library / RBINS Staff Publications 2022
Inproceedings Reference Contrasting ant diversity and distribution between ground, understorey and canopy rainforest strata along Mt Wilhelm, Papua New Guinea.
Located in Library / RBINS Staff Publications 2017
Inproceedings Reference Contrasting biogeographic patterns of two wide-spread Congolese fish species
Located in Library / RBINS Staff Publications 2023 OA
Webpublished Reference Contrasting saltmarsh vegetation impacts under increasing sea level rise rates
The resilience of saltmarshes mainly depends on their ability to gain elevation by sediment accretion to keep pace with sea level rise. While vegetation is known to facilitate sediment accretion at the plant scale by trapping mineral sediments and producing organic matter, the long- term impact at the landscape scale is still poorly understood. Here we use the biogeomorphic model Demeter to reveal contrasting vegetation impacts on spatial patterns of sediment accretion under different sea level rise regimes. Under contemporary sea level rise rates (2-10 mm/yr), vegetation inhibits sediment transport from tidal channels to platform interiors and creates levee- depression patterns. Hence, intertidal platforms accrete slower with vegetation than without, but this trend attenuates with increasing sea level rise rate, as water depth increases, and vegetation drag decreases. Under extreme sea level rise rate (20 mm/yr), platform interiors don’t keep up and turn into open water, while vegetation allows to preserve intertidal levees. Our results help to better understand some basic biophysical mechanisms that will control the fate of coastal wetlands under global climate change.
Located in Library / RBINS Staff Publications 2024
Webpublished Reference Contrasting saltmarsh vegetation impacts under increasing sea level rise rates
The resilience of saltmarshes mainly depends on their ability to gain elevation by sediment accretion to keep pace with sea level rise. While vegetation is known to facilitate sediment accretion at the plant scale by trapping mineral sediments and producing organic matter, the long-term impact at the landscape scale is still poorly understood. Here we use the biogeomorphic model Demeter to reveal contrasting vegetation impacts on spatial patterns of sediment accretion under different sea level rise regimes. Under contemporary sea level rise rates (2-10 mm/yr), vegetation inhibits sediment transport from tidal channels to platform interiors and creates levee-depression patterns. Hence, intertidal platforms accrete slower with vegetation than without, but this trend attenuates with increasing sea level rise rate, as water depth increases, and vegetation drag decreases. Under extreme sea level rise rate (20 mm/yr), platform interiors don’t keep up and turn into open water, while vegetation allows to preserve intertidal levees. Our results help to better understand some basic biophysical mechanisms that will control the fate of coastal wetlands under global climate change.
Located in Library / RBINS Staff Publications 2024
Proceedings Reference Contribution à la connasissance des saturniidae de la réserve forestière de Masako à Kisangani /RD Congo - tribu des Buaeini (Lepidoptera / Heterocera: Saturniidae, Satruniinae)
Located in Library / RBINS Staff Publications
Article Reference Contribution de la paléobotanique a l'étude pluridisciplinaire des séquences sédimentaires dans les entrées de grottes et les abris-sous-roche en Belgique : le site de Walou
Located in Library / RBINS Staff Publications 2016