5 Works

Data from: A test of community assembly rules using foliar endophytes from a tropical forest canopy

Julian Donald, Mélanie Roy, Uxue Suescun, Amaia Iribar, Sophie Manzi, Léonie Péllissier, Philippe Gaucher & Jérôme Chave
Community assembly theory assumes that ecological communities are spatially delimited into patches. Within these patches, coexistence results from environmental filtering, competition, and immigration. Truly delineated communities exist in laboratory studies of microbial cultures in Petri dishes, yet empirical tests conducted in continuous environments often use patches defined by convention as opposed to realised boundaries. Here we perform a test of ecological community assembly rules using foliar endophyte communities from a tropical rainforest, where leaves are...

Data from: Biological traits, rather than environment, shape detection curves of large vertebrates in neotropical rainforests

Thomas Denis, Cécile Richard-Hansen, Olivier Brunaux, Marie-Pierre Etienne, Stéphane Guitet & Bruno Hérault
Line transect surveys are widely used in neotropical rainforests to estimate the population abundance of medium- and large-sized vertebrates. The use of indices such as Encounter Rate has been criticized because the probability of animal detection may fluctuate due to the heterogeneity of environmental conditions among sites. In addition, the morphological and behavioral characteristics (biological traits) of species affect their detectability. In this study, we compared the extent to which environmental conditions and species’ biological...

Balanced polymorphisms and their divergence in a Heliconius butterfly

James Ogilvie, Steven Van Belleghem, Ryan Range, Riccardo Papa, Owen McMillan, Mathieu Chouteau & Brian Counterman
The evolution of mimicry in similarly defended prey is well described by Müllerian mimicry theory, which predicts the convergence of warning patterns in order to gain the most protection from predators. However, despite this prediction, we can find great diversity of color patterns amongst Müllerian mimics such as Heliconius butterflies in the neotropics. Furthermore, some species have evolved the ability to maintain multiple distinct warning patterns in single populations, a phenomenon known as polymorphic mimicry....

Data from: Initiation of Batrachochytrium dendrobatidis infection in the absence of physical contact with infected hosts – a field study in a high altitude lake

Elodie A. Courtois, Adeline Loyau, Mégane Bourgoin & Dirk S. Schmeller
Understanding transmission is a critical prerequisite for predicting disease dynamics and impacts on host populations. It is well established that Batrachochytrium dendrobatidis (Bd), the amphibian fungal pathogen responsible for chytridiomycosis, can be transmitted directly, through physical contact with an infected host. However, indirect pathways of transmission remain poorly investigated. We conducted a five-week long field infection experiment at a high altitude mountain lake in the French Pyrenees to investigate Bd transmission pathways in larval midwife...

Survival and growth of Symphonia seedlings in a reciprocal transplantation experiment

Niklas Tysklind, Marie-Pierre Etienne, Ivan Scotti, Caroline Scotii-Saintagne, Alexandra Tinaut, Maxime Casalis, Valerie Troispoux, Saint Omer Cazal & Louise Brousseau
Trees are characterised by the large number of seeds they produce. Although most of those seeds will never germinate, plenty will. Of those which germinate, many die young, and eventually only a minute fraction will grow to adult stage and reproduce. Is this just a random process? Do variations in germination and survival at very young stages rely on variations in adaptations to microgeographic heterogeneity? and do these processes matter at all in determining tree...

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Affiliations

  • University of French Guiana
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  • University of Toulouse
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  • Helmholtz Centre for Environmental Research
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  • University of Antwerp
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  • University of Rennes 1
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  • University of Geneva
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  • French National Institute for Agricultural Research
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  • National Forests Office
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  • French National Centre for Scientific Research
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  • AgroParisTech
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