818 Works

IASI-FT Sea Surface Temperature (from IASI/Metop-A)

Ana Claudia Parracho & Sarah Safieddine
The IASI Sea Surface Temperature (SST) product is a monthly (level L3), 1×1 degree global dataset of skin temperatures over the sea derived from the IASI satellite radiances data. The dataset consists of monthly mean TXT files. Each file is a grid organized by latitude (-90 to 89 °N) and longitude (-180 to 180 °E). The land and sea ice grid points are filled using NaN. Size of the grid: 180 lines and 361 columns....

Data from: Reduction of baseline corticosterone secretion correlates with climate warming and drying across wild lizard populations

Andréaz Dupoué, Alexis Rutschmann, Jean F. Le Galliard, Jean Clobert, Pauline Blaimont, Barry Sinervo, Donald B. Miles, Claudy Haussy & Sandrine Meylan
1. Climate change should lead to massive loss of biodiversity in most taxa but the detailed physiological mechanisms underlying population extinction remain largely elusive so far. In vertebrates, baseline levels of hormones such as glucocorticoids (GCs) may be indicators of population state since their secretion to chronic stress can impair survival and reproduction. However, the relationship between GC secretion, climate change and population extinction risk remains unclear. 2. In this study we investigated whether levels...

Data from: Assessing bundles of ecosystem services from regional to landscape scale: insights from the French Alps

Emilie Crouzat, Maud Mouchet, Francis Turkelboom, Coline Byczek, Jeroen Meersmans, Frederic Berger, Pieter Johannes Verkerk & Sandra Lavorel
1. Assessments of ecosystem services (ES) and biodiversity (hereafter ecological parameters) provide a comprehensive view of the links between landscapes, ecosystem functioning and human well-being. The investigation of consistent associations between ecological parameters, called bundles, and of their links to landscape composition and structure is essential to inform management and policy, yet it is still in its infancy. 2. We mapped over the French Alps an unprecedented array of 18 ecological parameters (16 ES and...

Data from: Developmental plasticity affects sexual size dimorphism in an anole lizard

Camille Bonneaud, Erin Marnocha, Anthony Herrel, Bieke Vanhooydonck, Duncan J. Irschick & Thomas B. Smith
While developmental plasticity has been shown to contribute to sexual size dimorphism (SSD) in laboratory studies, its role in shaping SSD variation in wild vertebrate populations is unclear. Here we use a field study and a laboratory experiment to show that resource availability influences the degree of SSD among insular populations of Anolis sagrei lizards in the Bahamas. Total amounts of food biomass explained variation in male, but not female, body size on six Bahamian...

Data from: The population biology of fungal invasions

Pierre Gladieux, Alice Feurtey, Michael E. Hood, Alodie Snirc, Joanne Clavel, Cyril Dutech, Melanie Roy & Tatiana Giraud
Fungal invasions are increasingly recognized as a significant component of global changes, threatening ecosystem health and damaging food production. Invasive fungi also provide excellent models to evaluate the generality of results based on other eukaryotes. We first consider here the reasons why fungal invasions have long been overlooked: they tend to be inconspicuous, and inappropriate methods have been used for species recognition. We then review the information available on the patterns and mechanisms of fungal...

Data from: The consequences of co-infections for parasite transmission in the mosquito Aedes aegypti

Alison B. Duncan, Philip Agnew, Valérie Noel & Yannis Michalakis
1)Co-infections may modify parasite transmission opportunities directly as a consequence of interactions in the within host environment, but also indirectly through changes in host life-history. Furthermore, host and parasite traits are sensitive to the abiotic environment with variable consequences for parasite transmission in co-infections. (2)We investigate how co-infection of the mosquito Aedes aegypti with two microsporidian parasites (Vavraia culicis and Edhazardia aedis) at two levels of larval food availability affects parasite transmission directly, and indirectly...

Data from: Climatic conditions cause complex patterns of covariation between demographic traits in a long-lived raptor

Ivar Herfindal, Martijn Van De Pol, Jan T. Nielsen, Bernt-Erik Sæther, Anders P. Møller & Bernt-Erik Saether
1. Environmental variation can induce life-history changes that can last over a large part of the lifetime of an organism. If multiple demographic traits are affected, expected changes in climate may influence environmental covariances among traits in a complex manner. Thus, examining the consequences of environmental fluctuations requires that individual information at multiple life stages is available, which is particularly challenging in long-lived species. 2. Here, we analyse how variation in climatic conditions occurring in...

Data from: The spatial dynamics of predators and the benefits and costs of sharing information

Matthieu Barbier & James R. Watson
Predators of all kinds, be they lions hunting in the Serengeti or fishermen searching for their catch, display various collective strategies. A common strategy is to share information about the location of prey. However, depending on the spatial characteristics and mobility of predators and prey, information sharing can either improve or hinder individual success. Here, our goal is to investigate the interacting effects of space and information sharing on predation efficiency, represented by the expected...

Data from: Evolution of haploid–diploid life cycles when haploid and diploid fitnesses are not equal

Michael F. Scott & Marie Rescan
Many organisms spend a significant portion of their life cycle as haploids and as diploids (a haploid–diploid life cycle). However, the evolutionary processes that could maintain this sort of life cycle are unclear. Most previous models of ploidy evolution have assumed that the fitness effects of new mutations are equal in haploids and homozygous diploids, however, this equivalency is not supported by empirical data. With different mutational effects, the overall (intrinsic) fitness of a haploid...

Data from: Re-growing a tropical dry forest: functional plant trait composition and community assembly during succession

Vanessa Buzzard, Catherine M. Hulshof, Trevor Birt, Cyrille Violle & Brian J. Enquist
A longstanding goal of ecology and conservation biology is to understand the environmental and biological controls of forest succession. However, the patterns and mechanisms that guide successional trajectories, especially within tropical forests, remain unclear. We collected leaf functional trait and abiotic data across a 110-year chronosequence within a tropical dry forest in Costa Rica. Focusing on six key leaf functional traits related to resource acquisition and competition, along with measures of forest stand structure, we...

Data from: Unexpected pattern of pearl millet genetic diversity among ethno-linguistic groups in the Lake Chad Basin

Abdel Kader Naino Jika, Yann Dussert, Christine Raimond, Eric Garine, Anne Luxereau, Najat Takvorian, Ramatou Sidikou Djermakoye, Toudou Adam & Thierry Robert
Despite of a growing interest in considering the role of sociological factors in seed exchanges and their consequences on the evolutionary dynamics of agro-biodiversity, very few studies assessed the link between ethno-linguistic diversity and genetic diversity patterns in small-holder farming systems. This is key for optimal improvement and conservation of crop genetic resources. Here, we investigated genetic diversity at 17 SSR markers of pearl millet landraces (varieties named by farmers) in the Lake Chad Basin....

Data from: Two colonisation stages generate two different patterns of genetic diversity within native and invasive ranges of Ulex europaeus

Benjamin Hornoy, Anne Atlan, Valérie Roussel, Yvonne M. Buckley & Michèle Tarayre
Genetic diversity and the way a species is introduced influence the capacity of populations of invasive species to persist in, and adapt to, their new environment. The diversity of introduced populations affects their evolutionary potential, which is particularly important for species that have invaded a wide range of habitats and climates, such as European gorse, Ulex europaeus. This species originated in the Iberian peninsula and colonised Europe in the Neolithic; over the course of the...

Data from: High genetic variation in resting stage production in a metapopulation: is there evidence for local adaptation?

Anne Carole Roulin, Mahendra Mariadassou, Matthew D. Hall, Jean-Claude Walser, Christoph Haag & Dieter Ebert
Local adaptation is a key process for the maintenance of genetic diversity and population diversification. A better understanding of the mechanisms that allow (or prevent) local adaptation constitutes a key in apprehending how and at what spatial scale it occurs. The production of resting stages is found in many taxa and reflects an adaptation to outlast adverse environmental conditions. Daphnia magna (Crustacea) can alternate between asexual and sexual reproduction, the latter being linked to dormancy,...

Data from: No evidence for prezygotic postcopulatory avoidance of kin despite high inbreeding depression

Pauline Vuarin, Alice Bouchard, Loïc Lesobre, Gwènaëlle Levêque, Toni Chalah, Michel Saint Jalme, Frédéric Lacroix, Yves Hingrat & Gabriele Sorci
Offspring resulting from mating among close relatives can suffer from impaired fitness through the expression of recessive alleles with deleterious effects. Post-copulatory sperm selection (a pre-zygotic mechanism of cryptic female choice) has been suggested to be an effective way to avoid inbreeding. To investigate whether post-copulatory female choice allows avoiding fertilization by close kin, we performed artificial inseminations in a promiscuous bird, the houbara bustard (Chlamydotis undulata undulata). Females were inseminated with a mix of...

Data from: Let the most motivated win: resource value components affect contest outcome in a parasitoid wasp

Anthony G.E. Mathiron, Patrice Pottier, Marlène Goubault & Anthony G E Mathiron
Studying physical contests for indivisible resources is a major theme in behavioral ecology. Intensity (aggressiveness) and outcome of such contests may be influenced by individual abilities to gain and keep the resource (Resource Holding Potential, RHP), but also by the value they place in the resource (Resource Value, RV). Contestants can assess resource quality directly (objective RV) or estimate it according to their physiological status and their experience (subjective RV). In some parasitoid species, adult...

Data from: An experimental test of density-dependent selection on temperament traits of activity, boldness and sociability

Jean-François Le Galliard, Matthieu Paquet, Marianne Mugabo & J.-F. Le Galliard
Temperament traits are seen in many animal species, and recent evolutionary models predict that they could be maintained by heterogeneous selection. We tested this prediction by examining density-dependent selection in juvenile common lizards Zootoca viviparascored for activity, boldness and sociability at birth and at the age of 1 year. We measured three key life-history traits (juvenile survival, body growth rate and reproduction) and quantified selection in experimental populations at five density levels ranging from low...

Data from: Habituation in non-neural organisms: evidence from slime moulds

Romain P. Boisseau, David Vogel & Audrey Dussutour
Learning, defined as a change in behaviour evoked by experience, has hitherto been investigated almost exclusively in multicellular neural organisms. Evidence for learning in non-neural multicellular organisms is scant and only a few unequivocal reports of learning have been described in single celled organisms. Here we demonstrate habituation, an unmistakable form of learning, in the non-neural organism Physarum polycephalum. In our experiment, using chemotaxis as the behavioural output and quinine or caffeine as the stimulus,...

Data from: Surviving in mountain climate refugia: new insights from the genetic diversity and structure of the relict shrub Myrtus nivellei (Myrtaceae) in the Sahara desert

Jérémy Migliore, Alex Baumel, Marianick Juin, Bruno Fady, Anne Roig, Nathalie Duong & Frédéric Médail
The identification of past glacial refugia has become a key topic for conservation under environmental change, since they contribute importantly to shaping current patterns of biodiversity. However, little attention has been paid so far to interglacial refugia despite their key role for the survival of relict species currently occurring in climate refugia. Here, we focus on the genetic consequences of range contraction on the relict populations of the evergreen shrub Myrtus nivellei, endemic in the...

Data from: How the truffle got its mate: insights from genetic structure in spontaneous and planted Mediterranean populations of Tuber melanosporum

Elisa Taschen, François Rousset, Mathieu Sauve, Laure Benoit, Marie-Pierre Dubois, Franck Richard, Marc-André Selosse, M.-P. Dubois & M.-A. Selosse
The life cycles and dispersal of edible fungi are still poorly known, thus limiting our understanding of their evolution and domestication. The prized Tuber melanosporum produces fruitbodies (fleshy organs where meiospores mature) gathered in natural, spontaneously inoculated forests or harvested in plantations of nursery-inoculated trees. Yet, how fruitbodies are formed remains unclear, thus limiting yields, and how current domestication attempts affect population genetic structure is overlooked. Fruitbodies result from mating between two haploid individuals: the...

Data from: Mature male parr contribution to the effective size of an anadromous Atlantic salmon (Salmo salar) population over 30 years

Devon L. Johnstone, Michael F. O'Connell, Friso P. Palstra & Daniel E. Ruzzante
We describe temporal changes in the genetic composition of a small anadromous Atlantic salmon (Salmo salar) population from South Newfoundland, an area where salmon populations are considered threatened (COSEWIC 2010). We examined the genetic variability (13 microsatellite loci) in 869 out-migrating smolt and post-spawning kelt samples, collected from 1985 to 2011 for a total of 22 annual collections and a 30 year span of assigned cohorts. We estimated the annual effective number of breeders (Nb)...

Data from: Decomposing changes in phylogenetic and functional diversity over space and time

Loïc Chalmandrier, Tamara Münkemüller, Vincent Devictor, Sébastien Lavergne & Wilfried Thuiller
1. The α, β, γ diversity decomposition methodology is commonly used to investigate changes in diversity over space or time but rarely conjointly. However, with the ever-increasing availability of large-scale biodiversity monitoring data, there is a need for a sound methodology capable of simultaneously accounting for spatial and temporal changes in diversity. 2. Using the properties of Chao's index, we adapted Rao's framework of diversity decomposition between orthogonal dimensions to a multiplicative α, β, γ...

Data from: Size evolution in microorganisms masks trade-offs predicted by the growth rate hypothesis

Isabelle Gounand, Tanguy Daufresne, Dominique Gravel, Corinne Bouvier, Thierry Bouvier, Marine Combe, Claire Gougat-Barbera, Franck Poly, Clara Torres-Barceló & Nicolas Mouquet
Adaptation to local resource availability depends on responses in growth rate and nutrient acquisition. The growth rate hypothesis (GRH) suggests that growing fast should impair competitive abilities for phosphorus and nitrogen due to high demand for biosynthesis. However, in microorganisms, size influences both growth and uptake rates, which may mask trade-offs and instead generate a positive relationship between these traits (size hypothesis, SH). Here, we evolved a gradient of maximum growth rate (μmax) from a...

Data from: The functional syndrome: linking individual trait variability to ecosystem functioning

Allan Raffard, Antoine Lecerf, Julien Cote, Mathieu Buoro, Remy Lassus & Julien Cucherousset
Phenotypic variability is increasingly assessed through functional response and effect traits, which provide a mechanistic framework for investigating how an organism responds to varying ecological factors and how these responses affect ecosystem functioning. Covariation between response and effect traits has been poorly examined at the intraspecific level, thus hampering progress in understanding how phenotypic variability alters the role of organisms in ecosystems. Using a multi-trait approach and a nine-month longitudinal monitoring of individual red-swamp crayfish...

Data from: Negative frequency-dependent selection of sexually antagonistic alleles in Myodes glareolus

Mikael Mokkonen, Hanna Kokko, Esa Koskela, Jussi Lehtonen, Tapio Mappes, Henna Martiskainen & Suzanne C. Mills
Sexually antagonistic genetic variation, where optimal values of traits are sex-dependent, is known to slow the loss of genetic variance associated with directional selection on fitness-related traits. However, sexual antagonism alone is not sufficient to maintain variation indefinitely. Selection of rare forms within the sexes can help to conserve genotypic diversity. We combined theoretical models and a field experiment with Myodes glareolus to show that negative frequency-dependent selection on male dominance maintains variation in sexually...

Data from: Minimal ProtoHox cluster inferred from bilaterian and cnidarian Hox complements

Daniel Chourrout, Frédéric Delsuc, Pascal Chourrout, Rolph B Edvardsen, Fabian Rentzsch, Eduard Renfer, Marit F. Jensen, Baoli Zhu, Pieter De Jong, Robert E. Steele & Ulrich Technau
Bilaterian animals have a Hox gene cluster essential for patterning the main body axis, and a ParaHox gene cluster. Comparison of Hox and ParaHox genes has led workers to postulate that both clusters originated from the duplication of an ancient cluster named ProtoHox, which contained up to four genes with at least the precursors of anterior and posterior Hox/ParaHox genes. However, the way in which genes diversified within the ProtoHox, Hox and ParaHox clusters remains...

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Affiliations

  • French National Centre for Scientific Research
    817
  • French National Institute for Agricultural Research
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  • University of Montpellier
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