537 research outputs found
Phylogenetic diversity and the structure of host-epiphyte interactions
No full textThis repository contains code, and data used in the paper "Phylogenetic diversity and the structure of host-epiphyte interactions!", by Marcio R. Pie, Fernanda S. Caron, Sven P. Batke, Johan Reyes-Chávez, Thom Dallimore et al. Use the following link: https://github.com/fernandacaron/epi_evo
Does Clade Density Constrain Geographical Range Evolution?
No full textThe role of biotic interactions, such as interspecific competition, in driving geographical range evolution is still poorly understood. For instance, lineages distributed across regions with a large number of potential competitors might experience some level of geographical packing of their range limits, so that changes in their geographical distributions are hampered. Conversely, a large number of competitors could instead lead to accelerated rates of geographical range evolution, with lineages shifting their ranges to avoid competition. We recently introduced the concept of clade density (CD; the sum of the areas of overlap between a species and other members of its higher taxon, weighted by their phylogenetic distance) as a proxy of the potential for interspecific competition across the geographical distribution of a given species. In this study, we used a large dataset with 5936 terrestrial vertebrate species to test whether CD is significantly associated with variation in the rate of geographical range evolution using two alternative approaches. First, we tested if there is a significant relationship between CD and the geographical distance between sister species. In addition, we estimated tip rates of geographical range evolution and tested if they were consistently associated with variation in CD. We found no evidence for an effect of CD on geographical range evolution in either of the tested approaches, even after accounting for phylogenetic uncertainty. These results are inconsistent with equilibrial models of species diversification and suggest that interspecific competition might not play a pervasive role in geographical range evolution of terrestrial vertebrates
Re: Caron et al. (2021) sociocultural context and autistics quality of life: A comparison between Quebec and France
No full text\ua9 The Author(s) 2021. The purpose of this letter to the editors is to highlight to the readership of Autism the recommended use of the Autism Quality of Life measure for research with autistic adults. The Autism Quality of Life was developed for use alongside the WHOQoL-BREF and WHO Disabilities module. The letter raises some concerns about the use of the Autism Quality of Life as a stand-alone measure in a recent study by Caron et al. published in Autism
Iglesia del papa o iglesia del rey? Política y religión en Sicilia bajo el reinado de Carlos II
No full textThe author examines the solidity of royal patronage in Sicily and proposes to revise the usual observation of a balance between Sicilians and Spanish in the appointments to bishoprics under Charles II. His thorough examination of these appointments, taking into account the naturalization of foreigners, shows the extent of the monarch’s power over the Sicilian Church. The intangibility of the force of royal patronage in Sicily is comparable, indeed, to that in Spanish America and did not decline under Charles II. Actually, it did not falter until the early Eighteenth century, on the occasion of the War of the Spanish successionL’auteur examine la solidité du patronage royal en Sicile et propose de revenir sur le constat habituel d’un équilibre entre locaux et Espagnols dans les nominations à la tête des évêchés et cardinales sous Charles II. Son examen fouillé de ces nominations, prenant en compte les naturalisations d’étrangers, démontre l’ampleur du pouvoir du monarque sur l’Église Sicilienne. L’intangibilité de la force du patronage royal en Sicile est comparable à celui des Indes. Cette force ne décline nullement sous Charles II, et ne chancelle qu’au début du XVIII siècle, avec la guerre sur la succession des Habsbourg d’Espagn
Merobruchus hastatus Kingsolver 1980
No full textMerobruchus hastatus Kingsolver, 1980 Paratypes (4) “ COSTA RICA, Gste. / Sta. Rosa Nat. Pk. / 12.III. 1976 / ex. Lysilloma desmostachys / D. H. Janzen” “DEPTº ZOOL. / UF - PARANÁ”, printed on white label. “ PARATYPE / Merobruchus hastatus (Sharp, 1885) / Det. Kingsolver”, printed on white and yellow label. “ PARATYPE / Merobruchus hastatus / Kinsolver, 1980 ”, printed on yellow label. “ DZUP / 130616 – 130619 ”, printed on white label. Remarks: Last label added with the correct name of the author of the species, DZUP / 130619 genitalia preserved in glycerin.Published as part of Ribeiro-Costa, Cibele S., Almeida, Lúcia M., Caron, Edilson, Corrêa, Geovan H., Linzmeier, Adelita M. & Dos, Paula B., 2010, Catalog of the types of some families of Coleoptera (Insecta) deposited at Coleção de Entomologia Pe. J. S. Moure, Curitiba, Brazil, pp. 1-34 in Zootaxa 2535 on page 23, DOI: 10.5281/zenodo.19660
Phylogenetic diversity and the structure of host-epiphyte interactions across the Neotropics
No full textUnderstanding the mechanisms driving community assembly has been a major focus of ecological research for nearly a century, yet little is known about these mechanisms in commensal communities, particularly with respect to their historical/evolutionary components. Here, we use a large-scale dataset of 4,440 vascular plant species to explore the relationship between the evolutionary distinctiveness (ED) (as measured by the ’species evolutionary history’ (SEH)) of host species and the phylogenetic diversity (PD) of their associated epiphyte species. Although there was considerable variation across hosts and their associated epiphyte species, they were largely unrelated to host SEH. Our results mostly support the idea that the determinants of epiphyte colonization success might involve host characteristics that are unrelated to host SEH (e.g., architectural differences between hosts). While determinants of PD of epiphyte assemblages are poorly known, they do not appear to be related to the evolutionary history of host species. Instead, they might be better explained by neutral processes of colonization and extinction. However, the high level of phylogenetic signal in epiphyte PD (independent of SEH) suggests it might still be influenced by yet unrecognized evolutionary determinants. This study highlights how little is still known about the phylogenetic determinants of epiphyte communities
Asynchronous field-induced ferromagnetism of the two Fe sub-lattices in (Hf,Ta)Fe2: Emergence of an additional first-order phase transition
No full textSamanta T, Wiesekopsieker S, Taake C, Caron L. Asynchronous field-induced ferromagnetism of the two Fe sub-lattices in (Hf,Ta)Fe2: Emergence of an additional first-order phase transition. APL Materials. 2025;13(3): 031112.The field-induced change of the magnetic phase transitions in partially Ta-substituted Hf0.84Ta0.16Fe2 has been examined by combining dc-magnetization, ac-susceptibility, magnetoresistance, and analysis of the isothermal entropy change [Delta S infinity (mu H-0)(n)] field-exponent (n). The system exhibits a first-order magnetic transition (FOMT) from a ferromagnetic (FM) to an antiferromagnetic (AFM) state at T-C (262 K) and a second-order AFM to paramagnetic (PM) transition at T-N (323 K) for lower applied field mu H-0 = 0.1 T. The shift of T-C and T-N follows opposite trends with increasing mu H-0 as expected for this material class. However, a field-induced FOMT has been observed associated with T-N above 2 T, as confirmed by the negative slope of the inverse Arrott plot, the phase transition peak in ac-susceptibility, a slope change in isothermal magnetoresistance, and an overshoot of n greater than 2. The result can be ascribed to the asynchronous field-induced FM ordering of adjacent antiferromagnetically coupled 6h Fe sub-lattices at T-N, which results in the increase of the temperature range of the FOMT. (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license(https://creativecommons.org/licenses/by/4.0/)
Coaching and barriers to weight loss: an integrative review
No full textKaren Fernanda Muñoz Obino,1 Caroline Aguiar Pereira,1 Rafaela Siviero Caron-Lienert2 1Nutrology/Clinical Nutrition Unit, Ernesto Dornelles Hospital, 2Nutrition of the Educational and Research Institute of Moinhos de Vento Hospital, Porto Alegre, Brazil Introduction: Coaching is proposed to raise a patient’s awareness and responsibility for their health behaviour change by transforming the professional–patient relationship.Objective: To review the scientific literature on how coaching can assist in weight loss and improve a patient’s state of health.Methodology: An integrative literature search was performed using PubMed, Latin American and Caribbean Literature in Health Sciences, and Scientific Electronic Library Online. We selected articles that were published in Portuguese, English, and Spanish over the last 10 years. Data analysis was performed using a validated data collection instrument.Results: Among the 289 articles identified in the search, 276 were excluded because they did not address the leading research question, their full texts were not available on the Internet, or they were duplicate publications. Therefore, for the analysis, we selected 13 articles that we classified as randomized clinical studies (46.15%; n=6), cohort studies (30.76%; n=4), cross-sectional studies (7.69%; n=1), case studies (7.69%; n=1), and review articles (7.69%; n=1). Joint intervention (combined in-person and telecoaching sessions) constituted the majority of session types. The use of technical coaching was superior in reducing anthropometric measurements and increasing the levels of motivation and personal satisfaction compared with formal health education alone.Conclusion: Coaching is an efficient, cost-effective method for combining formal education and treatment of health in the weight-loss process. Additional randomized studies are needed to demonstrate its effectiveness with respect to chronic disease indicators. Keywords: coaching, weight loss, quality of life, health promotion, neurolinguistic programming 
Observation of magnetic skyrmion lattice in Cr0.82Mn0.18Ge by small-angle neutron scattering
No full textUkleev V, Samanta T, Utesov OI, White JS, Caron L. Observation of magnetic skyrmion lattice in Cr0.82Mn0.18Ge by small-angle neutron scattering. Scientific Reports . 2025;15(1): 2865.Incommensurate magnetic phases in chiral cubic crystals are an established source of topological spin textures such as skyrmion and hedgehog lattices, with potential applications in spintronics and information storage. We report a comprehensive small-angle neutron scattering (SANS) study on the B20-type chiral magnet Cr[Formula: see text]Mn[Formula: see text]Ge, exploring its magnetic phase diagram and confirming the stabilization of a skyrmion lattice under low magnetic fields. Our results reveal a helical ground state with a decreasing pitch from 40 to 35nm upon cooling, and a skyrmion phase stable in applied magnetic fields of 10-30mT, and over an unusually wide temperature range for chiral magnets of 6 K ([Formula: see text], [Formula: see text] K). The skyrmion lattice forms a standard two-dimensional hexagonal coordination that can be trained into a single domain, distinguishing it from the three-dimensional hedgehog lattice observed in MnGe-based systems. Additionally, we demonstrate the persistence of a metastable SkL at 2K, even at zero field. These findings advance our understanding of magnetic textures in Cr-based B20 compounds, highlighting Cr0.82Mn0.18Ge as a promising material for further exploration in topological magnetism. © 2025. The Author(s)
Daily dynamics of contrasting spring algal blooms in Santa Monica Bay (central Southern California Bight)
No full text© The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Ollison, G., Hu, S., Hopper, J., Stewart, B., Smith, J., Beatty, J., Rink, L., & Caron, D. Daily dynamics of contrasting spring algal blooms in Santa Monica Bay (central Southern California Bight). Environmental Microbiology. (2022), https://doi.org/10.1111/1462-2920.16137.Protistan algae (phytoplankton) dominate coastal upwelling ecosystems where they form massive blooms that support the world's most important fisheries and constitute an important sink for atmospheric CO2. Bloom initiation is well understood, but the biotic and abiotic forces that shape short-term dynamics in community composition are still poorly characterized. Here, high-frequency (daily) changes in relative abundance dynamics of the metabolically active protistan community were followed via expressed 18S V4 rRNA genes (RNA) throughout two algal blooms during the spring of 2018 and 2019 in Santa Monica Bay (central Southern California Bight). A diatom bloom formed after wind-driven, nutrient upwelling events in both years, but different taxa dominated each year. Whereas diatoms bloomed following elevated nutrients and declined after depletion each year, a massive dinoflagellate bloom manifested under relatively low inorganic nitrogen conditions following diatom bloom senescence in 2019 but not 2018. Network analysis revealed associations between diatoms and cercozoan putative parasitic taxa and syndinean parasites during 2019 that may have influenced the demise of the diatoms, and the transition to a dinoflagellate-dominated bloom.This work was supported by the National Science Foundation #1136818 (David A. Caron)
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