10 Works

Microsatellite data of Avicennia marina from Gazi Bay, Kenya

Ludwig Triest
Mangrove ecosystems along the East African coast are often characterized by a disjunct zonation of seaward and landward Avicennia marina. This disjunct zonation may be maintained through different positions in the tidal frame, yielding different dispersal settings. The spatial configuration of the landscape and coastal processes such as tides and waves are expected to largely influence the extent of propagule transport and subsequent regeneration. We hypothesized that landward sites would keep a stronger genetic structure...

Data from: A ketocarotenoid-based color polymorphism in the Sira poison frog Ranitomeya sirensis indicates novel gene interactions underlying aposematic signal variation

Evan Twomey, James Johnson, Santiago Castroviejo-Fisher & Ines Van Bocxlaer
The accumulation of red ketocarotenoids is an important component of coloration in many organisms, but the underlying mechanisms are poorly understood. In some organisms, ketocarotenoids are sequestered from the diet and can accumulate when enzymes responsible for carotenoid breakdown are disrupted. In other organisms, ketocarotenoids are formed endogenously from dietary precursors via oxidation reactions carried out by carotenoid ketolase enzymes. Here, we study the genetic basis of carotenoid coloration in an amphibian. We demonstrate that...

Hidden hybridization and habitat differentiation ina Mediterranean macrophyte, the euryhaline genus Ruppia

Lise Beirinckx, Bram Vanschoenwinkel & Ludwig Triest
In many aquatic plant taxa, classification and identification based on morphology has always been difficult. Molecular markers revealed that the complexity in several of these aquatic taxa could be addressed to recurrent hybridization events and cryptic species diversity. The submerged macrophyte genus Ruppia is one of these aquatic genera with a complex taxonomy due to the absence of clear distinguishable traits and several hybridization events. Two species co-exist throughout Europe, R. maritima and R. spiralis...

Data from: Do people imitate when making decisions? - evidence from a spatial prisoners dilemma experiment

Jelena Grujic & Tom Lenaerts
How do people decide which action to take? This question is best answered using Game Theory, which has proposed a series of decision mechanisms that people potentially use. In network simulations, wherein games are repeated and payoff differences can be observed, those mechanisms rely often on imitation of successful behavior. Surprisingly, little to no evidence has been provided about whether, how and what people actually use to alter their actions in that context. By comparing...

Microsatellite genotypes and ITS2 DNA sequence data for Seriatopora hystrix

Rosa Maria Van Der Ven, Jean-François Flot, Carol Buitrago-López & Marc Kochzius
Coral reefs provide essential goods and services but are degrading at an alarming rate due to local and global anthropogenic stressors. The main limitation that prevents the implementation of adequate conservation measures is that connectivity and genetic structure of populations are poorly known. Here, the genetic diversity and connectivity of the brooding scleractinian coral, Seriatopora hystrix were assessed at two scales by genotyping ten microsatellite markers for 356 individual colonies. Seriatopora hystrix showed high differentiation,...

Data from: Prey colonization in freshwater landscapes can be stimulated or inhibited by the proximity of remote predators

Beth Turner, Hendrik Trekels, Mathil Vandromme & Bram Vanschoenwinkel
1. Recent findings suggest that the colonization of habitat patches may be affected by the quality of surrounding patches. For instance, patches that lack predators may be avoided when located near others with predators, a pattern known as risk contagion. Alternatively, predator avoidance might also redirect dispersal towards nearby predator-free patches resulting in so-called habitat compression. However, it is largely unknown how predators continue to influence these habitat selection behaviors at increasing distances from outside...

Serum 25(OH)D level on hospital admission is correlated with COVID-19 mortality

Geert Martens
Objective: Vitamin D deficiency was previously correlated with incidence and severity of COVID-19. We investigated the correlation between serum 25(OH)D level on admission and radiological stage and outcome of COVID-19 pneumonia. Methods: Retrospective observational trial on 186 SARS-CoV-2-infected individuals hospitalized from March 1, 2020 to April 7, 2020 with combined chest CT and 25(OH)D measurement on admission. Multivariate analysis was performed to study if vitamin D deficiency (25(OH)D < 20 ng/mL) predicts survival independently of...

Data from: Nutrient availability controls the impact of mammalian herbivores on soil carbon and nitrogen pools in grasslands

Judith Sitters, E.R. Jasper Wubs, Elisabeth S. Bakker, Thomas W. Crowther, Peter B. Adler, Sumanta Bagchi, Jonathan D. Bakker, Lori Biederman, Elizabeth T. Borer, Elsa E. Cleland, Nico Eisenhauer, Jennifer Firn, Laureano Gherardi, Nicole Hagenah, Yann Hautier, Sarah E. Hobbie, Johannes M.H. Knops, Andrew S. MacDougall, Rebecca L. McCulley, Joslin L. Moore, Brent Mortensen, Pablo L. Peri, Suzanne M. Prober, Charlotte Riggs, Anita C. Risch … &
Grasslands have been subject to considerable alteration due to human activities globally, including widespread changes in populations and composition of large mammalian herbivores and elevated supply of nutrients. Grassland soils remain important reservoirs of carbon (C) and nitrogen (N). Herbivores may affect both C and N pools and these changes likely interact with increases in soil nutrient availability. Given the scale of grassland soil fluxes, such changes can have striking consequences for atmospheric C concentrations...

Timing uncertainty in collective risk dilemmas encourages group reciprocation and polarization

Elias Fernandez Domingos, Jelena Grujić, Francisco C. Santos, Juan C. Burguillo Rial, Georg Kirchsteiger, Francisco C. Santos & Tom Lenaerts
Social dilemmas are often shaped by actions involving uncertain returns only achievable in the future, such as climate action or voluntary vaccination. In this context, uncertainty may produce non-trivial effects. Here, we assess experimentally — through a collective risk dilemma — the effect of timing uncertainty, i.e. how uncertainty about when a target needs to be reached affects the participants’ behaviours. We show that timing uncertainty prompts not only early generosity but also polarised outcomes,...

Microsatellite data of 14 Avicennia marina populations from Mozambique Channel area

Ludwig Triest
Mangrove forests are dynamic ecosystems found along sheltered low-lying coastal plains in warm-temperate, tropical and subtropical regions, predominantly on tidal flats, deltas, estuaries, bays, but also on oceanic atolls. These landforms present varied hydrodynamic and geomorphological settings for mangroves to establish and could influence the extent of propagule transport and subsequent regeneration. In this study, we examined whether these landform characteristics influence the genetic diversity and structure of Avicennia marina, one of the most abundant...

Registration Year

  • 2020
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  • Vrije Universiteit Brussel
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  • Université Libre de Bruxelles
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