56 Works

Data from: Associations among elementary school children's actual motor competence, perceived motor competence, physical activity and BMI: a cross-sectional study

An De Meester, David Stodden, Ali Brian, Larissa True, Greet Cardon, Isabel Tallir & Leen Haerens
Background: Positive associations between motor competence and physical activity have been identified by means of variable-centered analyses. To expand the understanding of these associations, this study used a person-centered approach to investigate whether different combinations (i.e., profiles) of actual and perceived motor competence exist (aim 1); and to examine differences in physical activity levels (aim 2) and weight status (aim 3) among children with different motor competence-based profiles. Methods: Children's (N=361; Boys=50%; Mage=9.50±1.24yrs) actual motor...

Data from: Structure and function of the bacterial and fungal gut microbiota of Neotropical butterflies

Alison Ravenscraft, Michelle Berry, Tobin Hammer, Kabir Peay & Carol Boggs
The relationship between animals and their gut flora is simultaneously one of the most common and most complex symbioses on Earth. Despite its ubiquity, our understanding of this invisible but often critical relationship is still in its infancy. We employed adult Neotropical butterflies as a study system to ask three questions: First, how does gut microbial community composition vary across host individuals, species and dietary guilds? Second, how do gut microbiota compare to food microbial...

Seasonal survival and reversible state effects in a long-distance migratory shorebird

Rose Swift, Amanda D. Rodewald, James Johnson, Brad Andres & Nathan Senner
1. Events during one stage of the annual cycle can reversibly affect an individual’s condition and performance not only within that stage, but also in subsequent stages (i.e., reversible state effects). Despite strong conceptual links, however, few studies have been able to empirically link individual-level reversible state effects with larger-scale demographic processes. 2. We studied both survival and potential reversible state effects in a long-distance migratory shorebird, the Hudsonian Godwit (Limosa haemastica). Specifically, we estimated...

Emplacement of massive deposits by sheet flow

Ricardo Hernandez‐Moreira, Sadegh Jafarinik, Sydney Sanders, Christopher G. St. C. Kendall, Gary Parker & Enrica Viparelli
Relatively common to the submarine setting are depositional sequences that begin with a lower erosional boundary, followed in ascending order by a either a graded or an inherently massive basal unit, a relatively coarse parallel laminated unit, a cross laminated unit, a relatively fine parallel laminated unit, and a capping layer of massive mud. These sequences are present in turbidity current, coastal storm and tsunami deposits, and their study is the key to understanding the...

Islands Within Islands: Bacterial Phylogenetic Structure and Consortia in Hawaiian Lava Caves and Fumaroles

Rebecca Prescott, Tatyana Zamkovaya, Stuart Donachie, Diana Northup, Joseph Mendley, Natalia Monsalve, Jimmy Saw, Alan Decho, Patrick Chain & Penelope Boston
Lava caves, tubes, and fumaroles in Hawai‘i present a range of volcanic, oligotrophic environments from different lava flows and host unexpectedly high levels of bacterial diversity. These features provide an opportunity to study the ecological drivers that structure bacterial community diversity and assemblies in volcanic ecosystems and compare the older, more stable environments of lava tubes, to the more variable and extreme conditions of younger, geothermally active caves and fumaroles. Using 16S rRNA amplicon-based sequencing...

Data from: Historical mutation rates predict susceptibility to radiation in Chernobyl birds

Anders P Møller, Johannes Erritzøe, Filiz Karadas & Timothy A Mousseau
Extreme environmental perturbations are rare, but may have important evolutionary consequences. Responses to current perturbations may provide important information about the ability of living organisms to cope with similar conditions in the evolutionary past. Radioactive contamination from Chernobyl constitutes one such extreme perturbation, with significant but highly variable impact on local population density and mutation rates of different species of animals and plants. We explicitly tested the hypothesis that species with strong impacts of radiation...

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