19 Works

Data from: The size at reproduction of canopy tree species in central Africa

Dakis-Yaoba Ouédraogo, Jean-Louis Doucet, Kasso Daïnou, Fidèle Baya, Achille Bernard Biwolé, Nils Bourland, Fousséni Fétéké, Jean-François Gillet, Yao Lambert Kouadio & Adeline Fayolle
Size at reproduction is a key aspect of species life history that has been little explored for long-lived tropical trees. In this study, we aimed to quantify reproductive diameter for 31 major timber species across 11 sites in Cameroon, Congo, and Central African Republic. Specifically, we examined (1) whether between-species variability can be explained by a set of seven species traits; (2) whether reproductive diameter varied within-species among sites; (3) whether reproductive status varied with...

Data from: DNA barcoding fishes from the Congo and the Lower Guinean provinces: assembling a reference library for poorly inventoried fauna

Gontran Sonet, Jos Snoeks, Zoltan T. Nagy, Emmanuel Vreven, Gert Boden, Floris C. Breman, Eva Decru, Mark Hanssens, Armel Ibala Zamba, Kurt Jordaens, Victor Mamonekene, Tobias Musschoot, Jeroen Van Houdt, Maarten Van Steenberge, Soleil Lunkayilakio Wamuini & Erik Verheyen
The Congolese and Lower Guinean ichthyological provinces are understudied hotspots of the global fish diversity. Here, we barcoded 741 specimens from the Lower and Middle Congo River and from three major drainage basins of the Lower Guinean ichthyological province, Kouilou-Niari, Nyanga and Ogowe. We identified 195 morphospecies belonging to 82 genera and 25 families. Most morphospecies (92.8%) corresponded to distinct clusters of DNA barcodes. Of the four morphospecies present in both neighbouring ichthyological provinces, only...

Data from: Long-term recovery of the functional community assembly and carbon pools in an African tropical forest succession

Marijn Bauters, Oscar Vercleyen, Bernard Vanlauwe, Johan Six, Bernard Bonyoma, Henri Badjoko, Wannes Hubau, Alison Hoyt, Mathieu Boudin, Hans Verbeeck & Pascal Boeckx.
On the African continent, the population is expected to expand fourfold in the next century, which will increasingly impact the global carbon cycle and biodiversity conservation. Therefore, it is of vital importance to understand how carbon stocks and community assembly recover after slash-and-burn events in tropical second-growth forests. We inventoried a chronosequence of 15 1-hectare plots in lowland tropical forest of the central Congo Basin and evaluated changes in aboveground and soil organic carbon stocks...

Data from: Phylogeny of seven Bulinus species originating from endemic areas in three African countries, in relation to the human blood fluke Schistosoma haematobium

Rima Zein-Eddine, Félicité Flore Djuikwo-Teukeng, Mustafa Al-Jawhari, Bruno Senghor, Tine Huyse & Gilles Dreyfuss
Background: Snails species belonging to the genus Bulinus (Planorbidae) serve as intermediate host for flukes belonging to the genus Schistosoma (Digenea, Platyhelminthes). Despite its importance in the transmission of these parasites, the evolutionary history of this genus is still obscure. In the present study, we used the partial mitochondrial cytochrome oxidase subunit I (cox1) gene, and the nuclear ribosomal ITS, 18S and 28S genes to investigate the haplotype diversity and phylogeny of seven Bulinus species...

Microsatellite genotypes of Aedes japonicus collected in Belgium and Germany

Nathalie Smitz
Seven polymorphic microsatellite loci were scored in 292 specimens of Ae. japonicus collected in Belgium and Germany to investigate the population genetic structure of this invasive. The objectives of the study were to determine (i) if the mosquito specimens collected along the Belgian border were introduced from the nearby existing West German population, and (ii) if the population at Natoye (Belgium) resulted from a new introduction event and/or from a few undetected specimens that escaped...

Data from: DNA barcoding reveals a largely unknown fauna of Gracillariidae leaf-mining moths in the Neotropics

D. C. Lees, A. Y. Kawahara, R. Rougerie, I. Ohshima, A. Kawakita, O. Bouteleux, J. De Prins & C. Lopez-Vaamonde
Higher taxa often show increasing species richness towards tropical low latitudes, a pattern known as the latitudinal biodiversity gradient (LBG). A rare reverse LBG (with greater richness towards temperate high latitudes) is exhibited by Gracillariidae leaf-mining moths, in which most described species occur in northern temperate areas. We carried out the first assessment of gracillariid species diversity in two Neotropical regions to test whether the relatively low tropical species diversity of this family is genuine...

Data from: The influence of spatially structured soil properties on tree community assemblages at a landscape scale in the tropical forests of southern Cameroon

Jason Vleminckx, Jean-Louis Doucet, Julie Morin-Rivat, Achille Biwolé, David Bauman, Olivier J. Hardy, Adeline Fayolle, Jean-François Gillet, Kasso Daïnou, Anaïs Gorel & Thomas Drouet
Species distribution within plant communities results from both the influence of deterministic processes, related to environmental conditions, and neutral processes related to dispersal limitation and stochastic events, the relative importance of each factor depending on the observation scale. Assessing the relative contribution of environment necessitates controlling for spatial dependences among data points. Recent methods, combining multiple regression and Moran's eigenvectors maps (MEM), have been proved successful in disentangling the influence of pure spatial processes related...

Data from: A genome-wide data assessment of the African lion (Panthera leo) population genetic structure and diversity in Tanzania

Nathalie Smitz, Olivia Jouvenet, Fredrick Ambwene Ligate, William-George Crosmary, Dennis Ikanda, Philippe Chardonnet, Alessandro Fusari, Kenny Meganck, François Gillet, Mario Melletti & Johan R. Michaux
The African lion (Panthera leo), listed as a vulnerable species on the IUCN Red List of Threatened Species (Appendix II of CITES), is mainly impacted by indiscriminate killing and prey base depletion. Additionally, habitat loss by land degradation and conversion has led to the isolation of some subpopulations, potentially decreasing gene flow and increasing inbreeding depression risks. Genetic drift resulting from weakened connectivity between strongholds can affect the genetic health of the species. In the...

Data from: Complete mitochondrial DNA replacement in a Lake Tanganyika cichlid fish

Bruno Nevado, Stephan Koblmüller, Christian Sturmbauer, Jos Snoeks, Jaime Usano-Alemany & Erik Verheyen
We used nuclear and mitochondrial DNA sequences from specimens collected throughout Lake Tanganyika to clarify the evolutionary relationship between Lamprologus callipterus and Neolamprologus fasciatus. The nuclear data supports the reciprocal monophyly of these two shell breeding lamprologine cichlids. However, mitochondrial DNA (mtDNA) sequences show that 1) L. callipterus includes two divergent and geographically disjunct (North-South) mtDNA lineages; and that 2) N. fasciatus individuals cluster in a lineage sister group to the northern lineage of L....

Data from: Towards a common methodology for developing logistic tree mortality models based on ring-width data

Maxime Cailleret, Christof Bigler, Harald Bugmann, J. Julio Camarero, Katarina Cufar, Hendrik Davi, Ilona Mészáros, Francesco Minunno, Mikko Peltoniemi, Elisabeth Robert, María-Laura Suarez, Roberto Tognetti & Jordi Martinez-Vilalta
Tree mortality is a key process shaping forest dynamics. Thus, there is a growing need for indicators of the likelihood of tree death. During the last decades, an increasing number of tree-ring based studies have aimed to derive growth–mortality functions, mostly using logistic models. The results of these studies, however, are difficult to compare and synthesize due to the diversity of approaches used for the sampling strategy (number and characteristics of alive and death observations),...

Data package from 'Pantropical variability in tree crown allometry' Global Ecology and Biogeography 2021. DOI: 10.1111/geb.13231

Grace Jopaul Loubota Panzou, Adeline Fayolle, Tommaso Jucker, Oliver Phillips, Stephanie Bohlman, Lindsay F. Banin, Simon L. Lewis, Kofi Affum-Baffoe, Luciana F. Alves, Cécile Antin, Eric Arets, Luzmila Arroyo, Timothy R. Baker, Nicolas Barbier, Hans Beeckman, Uta Berger, Yannick Enock Bocko, Frans Bongers, Sam Bowers, Thom Brade, Eduardo S. Brondizio, Arthur Chantrain, Jerome Chave, Halidou Compaore & David Coomes

Asynchronous Saturation of the Carbon Sink in African and Amazonian tropical forests

Wannes Hubau, Simon Lewis, Oliver Phillips, Kofi Kofi Affum-Baffoe, Hans Hans Beeckman, Aida Cuni-Sanchez, Corneille Ewango, Sophie Fauset, Douglas Sheil, Bonaventure Sonké, Martin Sullivan, Terry Sunderland, Sean Thomas, Katharine Abernethy, Stephen Adu-Bredu, Christian Amani, Timothy Baker, Lindsay Banin, Fidèle Baya, Serge Begne, Amy Bennett, Fabrice Benedet, Robert Bitariho & Yannick Bocko
Data and R-code from Hubau W et al. 2020. 'Asynchronous Saturation of the Carbon Sink in African and Amazonian tropical forests'. Nature 579, 80-87. 2020. DOI: 10.1038/s41586-020-2035-0. ABSTRACT: Structurally intact tropical forests sequestered ~50% of global terrestrial carbon uptake over the 1990s and early 2000s, offsetting ~15% of anthropogenic CO2 emissions1-3. Climate-driven vegetation models typically predict that this tropical forest ‘carbon sink’ will continue for decades4,5. However, recent inventories of intact Amazonian forests show declining...

Data from: Taxonomic challenges in freshwater fishes: a mismatch between morphology and DNA barcoding in fish of the north-eastern part of the Congo basin

Eva Decru, Tuur Moelants, Koen De Gelas, Emmanuel Vreven, Erik Verheyen & Jos Snoeks
This study evaluates the utility of DNA barcoding to traditional morphology-based species identifications for the fish fauna of the north-eastern Congo basin. We compared DNA sequences (COI) of 821 samples from 206 morphologically identified species. Best match, best close match and all species barcoding analyses resulted in a rather low identification success of 87.5%, 84.5% and 64.1%, respectively. The ratio ‘nearest-neighbour distance/maximum intraspecific divergence’ was lower than 1 for 26.1% of the samples, indicating possible...

Data from: Cryptic diversity and gene flow among three African agricultural pests: Ceratitis rosa, Ceratitis fasciventris and Ceratitis anonae (Diptera, Tephritidae)

Massimiliano Virgilio, Helene Delatte, Serge Quilici, Thierry Backeljau & Marc De Meyer
The ‘Ceratitis FAR complex’ is a species complex of African fruit flies (Diptera, Tephritidae) including the major agricultural pest Ceratitis rosa and the morphologically similar Ceratitis fasciventris and Ceratitis anonae. To resolve their intra- and interspecific genetic relationships and to estimate gene flow within this complex, we surveyed allelic variation at 16 microsatellite loci in 27 African populations of the three morphospecies. Interpopulation genetic distances and individual Bayesian assignments distinguished five genotypic clusters: two involving...

Data from: Testing the potential of DNA barcoding in vertebrate radiations: the case of the littoral cichlids (Pisces, Perciformes, Cichlidae) from Lake Tanganyika

Floris C. Breman, Sara Loix, Kurt Jordaens, Jos Snoeks & Maarten Van Steenberge
We obtained 398 cytochrome c oxidase subunit I barcodes of 96 morphospecies of Lake Tanganyika (LT) cichlids from the littoral zone. The potential of DNA barcoding in these fishes was tested using both species identification and species delineation methods. The best match (BM) and best close match (BCM) methods were used to evaluate the overall identification success. For this, three libraries were analysed in which the specimens were categorized into Operational Taxonomic Units (OTU) in...

Data from: A second New World hover fly, Toxomerus floralis (Fabricius) (Diptera: Syrphidae), recorded from the Old World, with description of larval pollen-feeding ecology

Kurt Jordaens, Georg Goergen, Ashley H. Kirk-Spriggs, Audrey Vokaer, Thierry Backeljau & Marc De Meyer
Recently (2013–2014), several hoverfly specimens from two localities in Benin and Cameroon (West and Central Africa) were caught from a species that we could not identify using existing identification keys for Afrotropical Syrphidae. Specific identification as Toxomerus floralis (Fabricius) was accomplished using morphology and various Neotropical identification keys. Corroboration of this identification was made by sequencing of the standard COI barcode region and a subsequent BLAST-IDS in BOLD that revealed a 100% sequence similarity with...

Data from: Multiple independent colonizations into the Congo Basin during the continental radiation of African Mastacembelus spiny eels

Julia J. Day, Antonie Fages, Katherine J. Brown, Emmanuel J. Vreven, Melanie L. J. Stiassny, Roger Bills, John P. Friel, Lukas Rüber & Antoine Fages
Aim: There has been recent interest in the origin and assembly of continental biotas based on densely sampled species-level clades, however, studies from African freshwaters are few so that the commonality of macroevolutionary patterns and processes among continental clades remain to be tested. Within the Afrotropics, the Congo Basin contains the highest diversity of riverine fishes, yet it is unclear how this fauna was assembled. To address this, and the diversification dynamics of a continental...

Data from: Testing the divergent adaptation of two congeneric tree species on a rainfall gradient using eco-physio-morphological traits

Anaïs-Pasiphaé Gorel, Kathy Steppe, Hans Beeckman, Niels J.F. De Baerdemaeker, Jean-Louis Doucet, Gauthier Ligot, Kasso Daïnou & Adeline Fayolle.
In tropical Africa, evidence of widely distributed genera transcending biomes or habitat boundaries has been reported. The evolutionary processes that allowed these lineages to disperse and adapt into new environments are far from being resolved. To better understand these processes, we propose an integrated approach, based on the eco-physio-morphological traits of two sister species with adjacent distributions along a rainfall gradient. We used wood anatomical traits, plant hydraulics (vulnerability to cavitation, wood volumetric water content...

Past connections with the mainland structure patterns of insular species richness in a continental-shelf archipelago (Aegean Sea, Greece): Species richness matrixes and shapefiles

Cyril Hammoud
Recent research in island biogeography has highlighted the important role of late Quaternary sea-level fluctuations in shaping biogeographic patterns in insular systems but focused on oceanic systems. Through this study, we aim investigate how late Quaternary sea-level fluctuations shaped species richness patterns in continental shelf island systems. Focusing on the Aegean archipelago, we first compiled maps of the area’s geography using published data, under three sea-level stands: 1) current; 2) median sea-level over the last...

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  • Royal Museum for Central Africa
  • University of Liège
  • Royal Belgian Institute of Natural Sciences
  • Ghent University
  • University College London
  • University of Antwerp
  • University of Cambridge
  • University of Graz
  • University of Leeds
  • University of Florida