10 results on '"Fernanda Vendramini"'
Search Results
2. Análisis del índice de contacto piel con piel en la primera hora de vida en una maternidad pública de la ciudad de Palmas-TO
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Fernanda Vendramini Rosal, Beatriz Oliveira Leite, Isabela Franco Ramos, Isadora de Melo, and Ana Mackartney de Souza Marinho
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Embarazada ,Gestante ,Recién nacido ,Método canguru ,General Earth and Planetary Sciences ,Kangaroo method ,Pregnant ,Recém-nascido ,Newborn ,Método canguro ,General Environmental Science - Abstract
O contato pele a pele é o conjunto de práticas de cuidado relacionados à primeira interação do recém-nascido com a sua mãe. Esse vínculo deve perdurar por pelo menos uma hora, momento conhecido como “hora do ouro”. A prática tem sido muito utilizada nos últimos tempos, pelos profissionais de saúde, visto que há vários benefícios, como a diminuição do estresse materno, facilidade na amamentação e redução do risco de infecções. O objetivo desse artigo é analisar os índices de contato pele a pele, na primeira hora de vida, nos últimos cinco anos. Foi realizado um estudo descritivo, de natureza quantitativa, por meio da análise de dados, abordando sobre temas como os índices de bebês que nasceram vivos ou que não necessitam de reanimação neonatal. Além disso, este estudo apresenta registros dos partos que aconteceram no Hospital e Maternidade Pública Dona Regina Siqueira Campos, em Palmas-TO e das mães que fizeram contato pele a pele. Foram obtidos dados referentes à pesquisa com as puérperas que aderiram esse método na primeira hora de vida do bebê. Em suma, foram identificados como principais fatores para a limitação da realização do CPP tanto no parto normal quanto ao cesáreo: sem motivo notificado, impossibilidade materna, más condições maternas e sem registro. Evidenciou-se, portanto, que práticas como treinamento obrigatório da equipe, através do curso de regulação neonatal, preconizando o CPP é uma das intervenções propostas, cujo objetivo é o nascimento de um bebê saudável, com risco mínimo para a mãe. Skin-to-skin contact is the set of care practices related to the newborn's first interaction with its mother. This bond must last for at least one hour, known as the “golden hour”. The practice has been widely used in recent times by health professionals, as there are several benefits, such as reduced maternal stress, ease of breastfeeding and reduced risk of infections. The objective of this article is to analyze the rates of skin-to-skin contact, in the first hour of life, in the last five years. A descriptive study of a quantitative nature was carried out through data analysis, addressing topics such as the rates of babies who were born alive or who do not need neonatal resuscitation. In addition, this study presents records of births that took place at the Hospital and Maternity Public Dona Regina Siqueira Campos, in Palmas-TO and of mothers who made skin-to-skin contact. Data related to research with puerperal women who adhered to this method in the first hour of the baby's life were obtained. In short, the following were identified as the main factors for limiting the performance of PPC both in normal delivery and cesarean section: no notified reason, maternal impossibility, poor maternal conditions and no registration. It was evident, therefore, that practices such as mandatory training of the team, through the neonatal regulation course, advocating CPP is one of the proposed interventions, whose objective is the birth of a healthy baby, with minimal risk to the mother. El contacto piel con piel es el conjunto de prácticas de cuidado relacionadas con la primera interacción del recién nacido con su madre. Este vínculo debe durar al menos una hora, momento conocido como la “hora dorada”. La práctica há sido ampliamente utilizada en los últimos tiempos por los profesionales de la salud, ya que tiene varios beneficios, como la reducción del estrés materno, la facilidad de amamantar y la reducción del riesgo de infecciones. El objetivo de este artículo es analizar las tasas de contacto piel con piel, en la primera hora de vida, en los últimos cinco años. Se realizó un estudio descriptivo de carácter cuantitativo a través del análisis de datos, abordando temas como las tasas de bebés que nacieron vivos o que no necesitan reanimación neonatal. Además, este estudio presenta registros de nacimientos que ocurrieron en el Hospital y Maternidad Dona Regina Siqueira Campos, en Palmas-TO y de madres que hicieron contacto piel a piel. Se obtuvieron datos relacionados con la investigación con puérperas que adhirieron a este método en la primera hora de vida del bebé. En resumen, se identificaron como los principales factores limitantes de la realización de la CPP tanto en parto normal como en cesárea los siguientes: no notificación del motivo, imposibilidad materna, malas condiciones maternas y no registro. Se evidenció, por lo tanto, que prácticas como la formación obligatoria del equipo, a través del curso de regulación neonatal, preconizando la PPC es una de las intervenciones propuestas, cuyo objetivo es el nacimiento de un bebé sano, con mínimo riesgo para la madre.
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- 2022
3. Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog?
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E. Simmons, J. Guerrero-Campo, Ziba Jamzad, Bruno Enrico Leone Cerabolini, Peter J. Wilson, L. de Torres Espuny, Sandra Basconcelo, Mostafa Khoshnevis, Younes Asri, John A. Raven, A. Romo-Díez, Guillermo Funes, Adel Jalili, Glynis Jones, Fernanda Vendramini, Natalia Pérez-Harguindeguy, Simon Pierce, Sandra Díaz, A. Bogard, B. Siavash, Michael Charles, G. Carter, M.C. Pérez-Rontomé, Shahin Yazdani, F. A. Shirvany, Gabriel Montserrat-Martí, Pilar Castro-Díez, F. Kazemi-Saeed, Behnam Hamzeh'ee, Carol Palmer, M. Sharafi, Johannes H. C. Cornelissen, R. Craigie, John G. Hodgson, S. Boustani, Pedro Villar-Salvador, A. Hynd, Alireza Naqinezhad, S. R. Band, Mohammad H. Dehghan, E. Kowsary, R. Abbas-Azimi, and Systems Ecology
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Genome size ,Range (biology) ,Evolution ,Climate ,Stomatal size ,Plant genetics ,Genomics ,Plant Science ,Biology ,Genome ,Leaf structure ,GENOME SIZE ,purl.org/becyt/ford/1 [https] ,Ciencias Biológicas ,Magnoliopsida ,Ecosystem ,Photosynthesis ,Life history ,purl.org/becyt/ford/1.6 [https] ,C4 ,Principal Component Analysis ,Allometry ,genome size ,seed size ,life history ,photosynthesis ,allometry ,ecology ,evolution ,SLA ,leaf structure ,CAM ,Geography ,Ecology ,fungi ,LIFE HISTORY ,Organ Size ,Original Articles ,Seed size ,Ecología ,Diploidy ,Plant Leaves ,Plant ecology ,SEED SIZE ,Plant Stomata ,STOMATAL SIZE ,Genome, Plant ,CIENCIAS NATURALES Y EXACTAS - Abstract
12 páginas, 5 figuras, 2 tablas.-- et al., [Background and Aims]: Genome size is a function, and the product, of cell volume. As such it is contingent on ecological circumstance. The nature of ‘this ecological circumstance’ is, however, hotly debated. Here, we investigate for angiosperms whether stomatal size may be this ‘missing link’: the primary determinant of genome size. Stomata are crucial for photosynthesis and their size affects functional efficiency. [Methods]: Stomatal and leaf characteristics were measured for 1442 species from Argentina, Iran, Spain and the UK and, using PCA, some emergent ecological and taxonomic patterns identified. Subsequently, an assessment of the relationship between genome-size values obtained from the Plant DNA C-values database and measurements of stomatal size was carried out. [Key Results]: Stomatal size is an ecologically important attribute. It varies with life-history (woody species < herbaceous species < vernal geophytes) and contributes to ecologically and physiologically important axes of leaf specialization. Moreover, it is positively correlated with genome size across a wide range of major taxa. [Conclusions]: Stomatal size predicts genome size within angiosperms. Correlation is not, however, proof of causality and here our interpretation is hampered by unexpected deficiencies in the scientific literature. Firstly, there are discrepancies between our own observations and established ideas about the ecological significance of stomatal size; very large stomata, theoretically facilitating photosynthesis in deep shade, were, in this study (and in other studies), primarily associated with vernal geophytes of unshaded habitats. Secondly, the lower size limit at which stomata can function efficiently, and the ecological circumstances under which these minute stomata might occur, have not been satisfactorally resolved. Thus, our hypothesis, that the optimization of stomatal size for functional efficiency is a major ecological determinant of genome size, remains unproven., A considerable quantity of the data used in this project was collected during projects funded by respectively NERC (UK), the Research Institute of Forests and Rangelands (RIFR, Iran), Universidad Nacional de Córdoba, Comisión Interministerial de Ciencia y Tecnología (Spain) and the Darwin Initiative for the Survival of Species (DEFRA, UK).
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- 2010
4. Direct and indirect effects of climate on decomposition in native ecosystems from central Argentina
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Melisa A. Giorgis, Fernanda Vendramini, Ana M. Cingolani, Marcelo Cabido, Sandra Díaz, Natalia Pérez-Harguindeguy, and Diego E. Gurvich
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Nutrient cycle ,Ecology ,Otras Ciencias Biológicas ,LITTER QUALITY ,GRADIENTS ,Plant community ,Vegetation ,Plant litter ,NUTRIENTS ,Arid ,Ciencias Biológicas ,ACTUAL EVAPOTRANSPIRATION ,IONIC EXCHANGE RESINS ,Effects of global warming ,Litter ,Environmental science ,Ecosystem ,ARID ECOSYSTEMS ,CIENCIAS NATURALES Y EXACTAS ,Ecology, Evolution, Behavior and Systematics - Abstract
Climate affects litter decomposition directly through temperature and moisture, determining the ecosystem potential decomposition, and indirectly through its effect on plant community composition and litter quality, determining litter potential decomposition. It would be expected that both the direct and indirect effects of climate on decomposition act in the same direction along gradients of actual evapotranspiration (AET). However, studies from semiarid ecosystems challenge this idea, suggesting that the climatic conditions that favour decomposition activity, and the consequent ecosystem potential decomposition, do not necessarily lead to litter being easier to decompose. We explored the decomposition patterns of four arid to subhumid native ecosystems with different AET in central-western Argentina and we analysed if ecosystem potential decomposition (climatic direct effect), nutrient availability and leaf litter potential decomposition (climatic indirect effect) all increased with AET. In general, the direct effect of climate (AET) on decomposition (i.e. ecosystem potential decomposition), showed a similar pattern to nutrient availability in soils (higher for xerophytic and mountain woodlands and lower for the other ecosystems), but different from the pattern of leaf litter potential decomposition. However, the range of variation in the ecosystem potential decomposition was much higher than the range of variation in litter potential decomposition, indicating that the direct effect of climate on decomposition was far stronger than the indirect effect through litter quality. Our results provide additional experimental evidence supporting the direct control of climate over decomposition, and therefore nutrient cycling. For the ecosystems considered, those with the highest AET are the ecosystems with the highest potential decomposition. But what is more interesting is that our results suggest that the indirect control of climate over decomposition through vegetation characteristics and decomposability does not follow the same trend as the direct effect of climate. This finding has important implications in the prediction of the effects of climate change on semiarid ecosystems. Fil: Pérez Harguindeguy, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Díaz, Sandra Myrna. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Vendramini, Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Gurvich, Diego Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Cingolani, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Giorgis, Melisa Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Cabido, Marcelo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
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- 2007
5. Leaf traits and herbivore selection in the field and in cafeteria experiments
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Diego E. Gurvich, Marcelo Cabido, Sandra Díaz, Johannes H. C. Cornelissen, Natalia Pérez-Harguindeguy, and Fernanda Vendramini
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Herbivore ,Ecology ,Range (biology) ,Context (language use) ,Cafeteria ,Interspecific competition ,Biology ,Generalist and specialist species ,biology.organism_classification ,Ecology, Evolution, Behavior and Systematics ,Preference ,Invertebrate - Abstract
Despite the vast diversity and complexity of herbivores, plants and their interactions, most authors agree that a small number of components of leaf quality affect preference by generalist herbivores in a predictable way. However, herbivore preference is determined not only by intrinsic plant attributes and herbivore biology but also by the environmental context. Within this framework, we aimed to analyse general interspecific trends in the association between herbivory and leaf traits over a wide range of angiosperms from central Argentina. We (i) tested for consistent associations between leaf traits, consumption in the field, and preference of generalist invertebrate herbivores in cafeteria experiments; (ii) assessed how well herbivore preferences in cafeterias matched leaf consumption in the field; and (iii) developed a simple conceptual model linking leaf traits, herbivore preference in cafeterias and consumption in the field. In general, we found that tender leaves with higher nutritional quality were preferred by herbivores, both in the field and in cafeteria experiments. According to our model, this relationship between field and cafeteria consumption and leaf quality is observed when generalist herbivores and plants of high accessibility are considered. However, differences between leaf consumption in the field and in cafeteria experiments can also be found. At least two reasons can account for this: (i) specialized plant-herbivore relationships often occur in the field, whereas cafeteria experiments tend to consider only one or a few generalist herbivores; (ii) different plant species growing in the field often differ in their degree of accessibility to herbivores, whereas in cafeteria experiments all species are equally accessible. Our results add new evidence to a growing consensus that, although herbivory in the field is determined by many factors, consistent patterns of differential susceptibility to foliar feeders can be found in leaves differing in nutritional quality and thus in resource-use strategy.
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- 2003
6. Leaf traits as indicators of resource‐use strategy in floras with succulent species
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Sandra Díaz, Diego E. Gurvich, Fernanda Vendramini, John G. Hodgson, Peter J. Wilson, and Ken Thompson
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Leaf water content ,Multivariate statistics ,Specific leaf area ,Physiology ,Sclerophyll ,Botany ,Resource use ,Succulent plant ,Plant Science ,Indicator value ,Vegetation ,Biology - Abstract
Summary • Associations between specific leaf area (SLA), leaf water content (LWC) and leaf thickness (LT) in 77 species were analysed to identify which of these traits gave a better indicator value of general plant resource-use strategy within the flora of central-western Argentina, in which succulent species are common. • When all species were considered together, SLA and LWC were not significantly correlated. All high-SLA tender-leafed species showed high LWC. Low SLA, however, was associated both with low LWC (sclerophyllous species) and with high LWC (succulents). When succulents were excluded, the association between SLA and LWC was significant and positive. A similar trend was found for a mixed set of nonsucculent species from other floras of the world. • In the Argentine data set, SLA and LT, but not LWC, were significantly correlated with species’ scores along a multivariate axis of plant resource-use strategy. • Because of its clearer ecological interpretation and its applicability across different floras, SLA appears to be the best candidate for inclusion in large comparative databases.
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- 2002
7. [Untitled]
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Alejandro E. Castellanos, Johannes H. C. Cornelissen, Sandra Díaz, Natalia Pérez-Harguindeguy, Fernanda Vendramini, and Marcelo Cabido
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chemistry.chemical_classification ,Biogeochemical cycle ,Soil Science ,Plant Science ,Interspecific competition ,Mineralization (soil science) ,Biology ,Plant litter ,Dry weight ,Agronomy ,chemistry ,Botany ,Ecosystem ,Organic matter ,Nitrogen cycle - Abstract
Litter decomposition, a major determinant of ecosystem functioning, is strongly influenced by the litter quality of different species. We aimed at (1) relating interspecific variation in leaf litter decomposition rate to the functional types different species belong to; and (2) understanding the chemical and/or physical basis for such variation and its robustness to environmental factors. We selected 52 Angiosperms from a climatic gradient in central-western Argentina, representing the widest range of functional types and habitats published so far. Ten litter samples of each species were simultaneously buried for 9 weeks during the 1996 summer in an experimental decomposition bed. Decomposition rate was defined as the percentage of dry mass loss after incubation. Chemical litter quality was measured as carbon (C) content, nitrogen (N) content, and C-to-N ratio. Since tensile strength of litter and living leaves were strongly correlated, the latter was chosen as an indicator of physical litter quality. A subset of 15 species representing different functional types was also incubated in England for 15 weeks, following a similar experimental procedure. Litter C-to-N and leaf tensile strength of the leaves showed the strongest negative associations with decomposition rate, both at the species and at the functional-type level. Decomposition rates of the same species in Argentina and in England were strongly correlated. This reinforces previous evidence that species rankings in terms of litter decomposition rates are robust to methodological and environmental factors. This paper has shown new evidence of plant control over the turnover of organic matter through litter quality, and confirms, over a broad spectrum of functional types, general models of resource allocation. The strong correlations between leaf tensile strength – a trait that is easy and quick to measure in a large number of species – decomposition rate, and C-to-N ratio indicate that leaf tensile strength can be useful in linking plant quality to decomposition patterns at the ecosystem level.
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- 2000
8. An evolutionary perspective on leaf economics: phylogenetics of leaf mass per area in vascular plants
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Fernanda Vendramini, Sandra Lavorel, Peter B. Reich, Carly Golodets, Jiri Dolezal, Robin J. Pakeman, Maud Bernard-Verdier, Eric Garnier, Guillaume Cornu, Renée M. Bekker, Olivier Flores, Adeline Fayolle, Jan P. Bakker, Graciela M. Rusch, Vasilios P. Papanastasis, Pablo Cruz, Dieter Kunzmann, Michael Kleyer, Helena Freitas, Bruno Enrico Leone Cerabolini, Matthieu Delcamp, John G. Hodgson, Baptiste Testi, Natalia Pérez-Harguindeguy, Sandra Díaz, Ove Eriksson, Guido Brusa, R. M. Ceriani, Evan Weiher, Simon Pierce, Sylvie Gourlet-Fleury, Ian J. Wright, Université de La Réunion (UR), Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Department of Biological Sciences, Macquarie University, Hawkesbury Institute for the Environment, Western Sydney University, University of Minnesota [Twin Cities] (UMN), University of Minnesota System, Università degli Studi di Milano = University of Milan (UNIMI), Universidad de Córdoba = University of Córdoba [Córdoba], The James Hutton Institute, Norwegian Institute for Nature Research (NINA), University of Groningen, Centro Flora Autoctona, Partenaires INRAE, Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), AGroécologie, Innovations, teRritoires (AGIR), Institut National de la Recherche Agronomique (INRA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT), Institute of Botany, Czech Academy of Sciences [Prague] (CAS), Department of Botany, Stockholm University, Universidade de Coimbra, Tel Aviv University (TAU), University of Sheffield, Universitá degli Studi dell’Insubria = University of Insubria [Varese] (Uninsubria), Landscape Ecology Group, University of Oldenburg, Landscape Ecology and Consulting, Université Joseph Fourier - Grenoble 1 (UJF), Laboratory of Rangeland Ecology, Aristotle University of Thessaloniki, University of Wisconsin-Madison, ANR project A-BI-ME (Activites humaines, dynamique et gestion de la BIodiversite en milieu MEditerraneen) [ANR-05-BDIV-014], Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École pratique des hautes études (EPHE), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Università degli Studi di Milano [Milano] (UNIMI), Universidad Nacional de Cordoba, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Tel Aviv University [Tel Aviv], and Università degli Studi dell' Insubria
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0106 biological sciences ,Phylogénie ,Fonction physiologique ,Biodiversité et Ecologie ,Ornstein-Uhlenbeck model ,F62 - Physiologie végétale - Croissance et développement ,Évolution ,01 natural sciences ,F30 - Génétique et amélioration des plantes ,purl.org/becyt/ford/1 [https] ,Stabilizing selection ,Original Research ,Brownian model ,functional trait ,phenotypic evolution ,2. Zero hunger ,Ecology ,Phylogenetic tree ,biology ,U10 - Informatique, mathématiques et statistiques ,BROWNIAN MODEL ,FLOWERING PLANTS ,Indice de surface foliaire ,Feuille ,food and beverages ,Ornstein–Uhlenbeck model ,Surface ,phénotype ,SEED SIZE ,Functional trait ,Phenotypic evolution ,Ecology, Evolution, Behavior and Systematics ,Nature and Landscape Conservation ,Trait ,Plante ,masse foliaire ,DIVERSIFICATION ,Modèle mathématique ,CIENCIAS NATURALES Y EXACTAS ,TRAITS ,Développement biologique ,Woody plant ,Vascular plant ,Evolution ,trait fonctionnel ,FUNCTIONAL TRAIT ,010603 evolutionary biology ,CLASSIFICATION ,Biodiversity and Ecology ,Ciencias Biológicas ,Behavior and Systematics ,Molecular evolution ,Phylogenetics ,RATES ,purl.org/becyt/ford/1.6 [https] ,SEQUENCES ,fungi ,ANGIOSPERMS ,15. Life on land ,Herbaceous plant ,Ecología ,biology.organism_classification ,PHENOTYPIC EVOLUTION ,MOLECULAR EVOLUTION ,PATTERNS ,ORNSTEIN UHLENBECK MODEL ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,010606 plant biology & botany - Abstract
In plant leaves, resource use follows a trade-off between rapid resource capture and conservative storage. This “worldwide leaf economics spectrum” consists of a suite of intercorrelated leaf traits, among which leaf mass per area, LMA, is one of the most fundamental as it indicates the cost of leaf construction and light-interception borne by plants. We conducted a broad-scale analysis of the evolutionary history of LMA across a large dataset of 5401 vascular plant species. The phylogenetic signal in LMA displayed low but significant conservatism, that is, leaf economics tended to be more similar among close relatives than expected by chance alone. Models of trait evolution indicated that LMA evolved under weak stabilizing selection. Moreover, results suggest that different optimal phenotypes evolved among large clades within which extremes tended to be selected against. Conservatism in LMA was strongly related to growth form, as were selection intensity and phenotypic evolutionary rates: woody plants showed higher conservatism in relation to stronger stabilizing selection and lower evolutionary rates compared to herbaceous taxa. The evolutionary history of LMA thus paints different evolutionary trajectories of vascular plant species across clades, revealing the coordination of leaf trait evolution with growth forms in response to varying selection regimes. Fil: Flores, Olivier. Centre d’Ecologie Fonctionnelle et Evolutive; Francia. Université de la Réunion; Francia Fil: Garnier, Eric. Centre d’Ecologie Fonctionnelle et Evolutive; Francia Fil: Wright, Ian J.. Macquarie University. Department of Biological Sciences; Australia Fil: Reich, Peter B.. University of Minnesota. Department of Forest Resources and Institute on the Environment; Estados Unidos. University of Western Sydney. Hawkesbury Institute for the Environment; Australia Fil: Pierce, Simon. University of Milan. Department of Plant Production; Italia Fil: Diaz, Sandra Myrna. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Pakeman, Robin J... James Hutton Institute; Reino Unido Fil: Rusch, Graciela M.. Norwegian Institute for Nature Research; Noruega Fil: Bernard Verdier, Maud. Centre d’Ecologie Fonctionnelle et Evolutive; Francia Fil: Testi, Baptiste. Centre d’Ecologie Fonctionnelle et Evolutive; Francia Fil: Bakker, Jan P.. Community and Conservation Ecology Group; Países Bajos Fil: Bekker, Renee M.. Community and Conservation Ecology Group; Países Bajos Fil: Cerabolini, Bruno. Universita degli Studi dell’Insubria; Italia Fil: Ceriani, Roberta. Centro Flora Autoctona; Italia Fil: Cornu, Guillaume. Department Environment and Societies Research Unit Forests and Societies; Francia Fil: Cruz, Pablo. Institut National de la Recherche Agronomique; Francia Fil: Delcamp, Matthieu. Department Environment and Societies Research Unit Forests and Societies; Francia Fil: Dolezal, Jiri. Academy of Sciences of the Czech Republic. Institute of Botany; República Checa Fil: Eriksson, Ove. Stockholm University. Department of Botany; Suecia Fil: Fayolle, Adeline. Department Environment and Societies Research Unit Forests and Societies; Francia Fil: Freitas, Helena. University of Coimbra. Centre for Functional Ecology; Portugal Fil: Golodets, Carly. Faculty of Life Sciences. Department of Molecular Biology and Ecology of Plants; Israel Fil: Gourlet Fleury, Sylvie. Department Environment and Societies Research Unit Forests and Societies; Francia Fil: Hodgson, John. The University. Department of Archaeology; Reino Unido Fil: Brusa, Guido. Universitá degli Studi dell’Insubria; Italia Fil: Kleyer, Michael. Carl von Ossietzky University of Oldenburg. Landscape Ecology Group; Alemania Fil: Kunzmann, Dieter. Carl von Ossietzky University of Oldenburg. Landscape Ecology Group; Alemania Fil: Lavorel, Sandra. Universite Joseph Fourier. Laboratoire d’Ecologie Alpine and Station Alpine Joseph Fourier; Francia Fil: Papanastasis, Vasilios. Aristotle University of Thessaloniki. Laboratory of Rangeland Ecology; Grecia Fil: Perez Harguindeguy, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Vendramini, Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Weiher, Evan. University of Wisconsin Eau Claire. Department of Biology; Estados Unidos
- Published
- 2013
9. Leaf structure and defence control litter decomposition rate across species and life forms in regional floras on two continents
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Marcelo Cabido, J. Philip Grime, Fernanda Vendramini, Sandra Díaz, Barbara Marzano, Natalia Pérez-Harguindeguy, Bruno Enrico Leone Cerabolini, Johannes H. C. Cornelissen, and Systems Ecology
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Herbivore ,Decomposition ,Specific leaf area ,Physiology ,Ecology ,Range (biology) ,Leaf palatability ,food and beverages ,Plant Science ,Interspecific competition ,Plant litter ,Biology ,Evergreen ,Leaf lifespan ,Generalist and specialist species ,Litter mass loss ,Functional type ,Ecosystem ,Herbivory ,SDG 14 - Life Below Water ,SLA ,Leaf toughness - Abstract
There is some evidence that traits of fresh leaves that provide structural or chemical protection ('defence') remain operational in the leaf litter and control interspecific variation in decomposition rate in or on the soil. We tested experimentally whether the negative relationship between foliar defence and litter decomposition rate is fundamental, i.e. whether it is seen consistently across higher plant species and life forms, and whether it is repeated in the floras of geographically and climatically distinct areas separated by an ocean. We employed the published results of two outdoor litter bag experiments, in which we simultaneously compared the relative mass losses ('decomposibility') of leaf litters of a wide range of plant species. One experiment was in Cordoba, Argentina, and included 48 Argentine species typical of the dry, subtropical landscapes along a steep altitudinal gradient. The other was in Sheffield, UK, and hosted 72 British species typical of the temperate-Atlantic landscape there. We linked the two experiments through a similar experiment in Sheffield that hosted litters of subsets of both the Argentine and British species. We also tested fresh leaves of all species from the same areas for tensile strength ('toughness') and relative palatability to generalist herbivorous snails in multi-species 'cafeteria' experiments. Both in Argentina and in Great Britain there were highly significant correlations between leaf palatability (r = 0.61; 0.73) or leaf tensile strength (r = -0.60; -0.60) and litter mass loss across all species. These relationships could be explained by variation both between and within broad life-form groups. Specific leaf area (area: dry mass) of fresh leaves was consistently correlated only with litter mass loss within British life form groups. We illustrated the possible ecosystem consequences of these relationships by comparing functional traits of British species differing in leaf habit. In comparison with deciduous species, evergreens generally had innately slow growth, which corresponded to their longer-lived leaves of lower specific leaf area, higher tensile strength and lower palatability to generalist invertebrate herbivores. Correspondingly, evergreens produced more resistant leaf litter. Thus, slow-growing evergreens might maintain their position in infertile ecosystems through leaf traits that help them to conserve their nutrients efficiently and to keep nutrient mineralization low, thereby not allowing potentially fast-growing deciduous species to outcompete them.
- Published
- 1999
10. The plant traits that drive ecosystems: Evidence from three continents
- Author
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Adel Jalili, Sandra Basconcelo, K. Thompson, F. Kazemi-Saeed, A. Romo-Díez, M.C. Pérez-Rontomé, Fernanda Vendramini, Joaquín Guerrero-Campo, Michael Charles, John G. Hodgson, Valeria Falczuk, Behnam Hamzeh'ee, B. Siavash, Pilar Castro-Díez, Younes Asri, Shahin Yazdani, A. Shirvany, Gabriel Montserrat-Martí, Marcelo Cabido, J. P. Grime, S. Boustani, L. de Torres-Espuny, R. Abbas-Azimi, Sandra Díaz, S. Shaw, M. Khoshnevi, M. Maestro-Martínez, Natalia Pérez-Harguindeguy, Glynis Jones, E. Kowsary, Marcelo Román Zak, Mohammad H. Dehghan, Pedro Villar-Salvador, Johannes H. C. Cornelissen, A. Hynd, S. R. Band, Guillermo Funes, Fatemeh Zarrinkamar, Amy Bogaard, and Systems Ecology
- Subjects
Vascular plant ,ARGENTINA ,Screening techniques ,Resource (biology) ,Ecology ,biology ,Otras Ciencias Biológicas ,Plant Science ,IRAN ,biology.organism_classification ,COMPARATIVE ECOLOGY ,Ciencias Biológicas ,Taxon ,PLANT FUNCTIONAL TYPES ,Specialization (functional) ,Ordination ,Ecosystem ,Plant traits ,CIENCIAS NATURALES Y EXACTAS ,SDG 15 - Life on Land - Abstract
Question: A set of easily‐measured (‘soft’) plant traits has been identified as potentially useful predictors of ecosystem functioning in previous studies. Here we aimed to discover whether the screening techniques remain operational in widely contrasted circumstances, to test for the existence of axes of variation in the particular sets of traits, and to test for their links with ‘harder’ traits of proven importance to ecosystem functioning. Location: central‐western Argentina, central England, northern upland Iran, and north‐eastern Spain. Recurrent patterns of ecological specialization: Through ordination of a matrix of 640 vascular plant taxa by 12 standardized traits, we detected similar patterns of specialization in the four floras. The first PCA axis was identified as an axis of resource capture, usage and release. PCA axis 2 appeared to be a size‐related axis. Individual PCA for each country showed that the same traits remained valuable as predictors of resource capture and utilization in all of them, despite their major differences in climate, biogeography and land‐use. The results were not significantly driven by particular taxa: the main traits determining PCA axis 1 were very similar in eudicotyledons and monocotyledons and Asteraceae, Fabaceae and Poaceae. Links between recurrent suites of ‘soft’ traits and ‘hard’ traits: The validity of PCA axis 1 as a key predictor of resource capture and utilization was tested by comparisons between this axis and values of more rigorously established predictors (‘hard’ traits) for the floras of Argentina and England. PCA axis 1 was correlated with variation in relative growth rate, leaf nitrogen content, and litter decomposition rate. It also coincided with palatability to model generalist herbivores. Therefore, location on PCA axis 1 can be linked to major ecosystem processes in those habitats where the plants are dominant. Conclusion: We confirm the existence at the global scale of a major axis of evolutionary specialization, previously recognised in several local floras. This axis reflects a fundamental trade‐off between rapid acquisition of resources and conservation of resources within well‐protected tissues. These major trends of specialization were maintained across different environmental situations (including differences in the proximate causes of low productivity, i.e. drought or mineral nutrient deficiency). The trends were also consistent across floras and major phylogenetic groups, and were linked with traits directly relevant to ecosystem processes. Fil: Díaz, Sandra Myrna. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Hodgson, J.G.. The University. Department of Animal and Plant Sciences. Unit of Comparative Plant Ecology; Reino Unido Fil: Thompson, K.. The University. Department of Animal and Plant Sciences. Unit of Comparative Plant Ecology; Reino Unido Fil: Cabido, Marcelo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Cornelissen, Johannes H. C.. Free University. Faculty Earth and Life Sciences. Department of Systems Ecology; Países Bajos Fil: Funes, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Pérez Harguindeguy, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Vendramini, Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Falczuk, Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Zak, Marcelo Román. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Khoshnevi, M.. Research Institute of Forests and Rangelands; Irán Fil: Pérez Rontomé, M. C.. Instituto Pirenaico de Ecología; España Fil: Shirvani, F. A.. Research Institute of Forests and Rangelands; Irán Fil: Yazdani, S.. Research Institute of Forests and Rangelands; Irán Fil: Abbas Azimi, R. Research Institute of Forests and Rangelands; Irán Fil: Bogaard, A. The University. Department of Archaeology and Prehistory; Reino Unido Fil: Boustani, S.. Research Institute of Forests and Rangelands; Irán Fil: Charles, M.. The University. Department of Archaeology and Prehistory; Reino Unido Fil: Dehghan, M.. Research Institute of Forests and Rangelands; Irán Fil: de Torres Espuny, L.. Instituto Pirenaico de Ecología; España Fil: Guerrero Campo, J.. Instituto Pirenaico de Ecología; España Fil: Hynd, A.. The University. Department of Archaeology and Prehistory; Reino Unido Fil: Jones, G.. The University. Department of Archaeology and Prehistory; Reino Unido Fil: Kowsary, E.. Research Institute of Forests and Rangelands; Irán. Instituto Pirenaico de Ecología; España Fil: Kazemi Saeed, F.. Research Institute of Forests and Rangelands; Irán Fil: Maestro Martínez, M.. Instituto Pirenaico de Ecología; España Fil: Romo Diez, A.. Instituto Botanico de Barcelona; España Fil: Shaw, S.. Research Institute of Forests and Rangelands; Irán. The University. Department of Animal and Plant Sciences; Reino Unido Fil: Siavash, B.. Research Institute of Forests and Rangelands; Irán Fil: Villar Salvador, P.. Instituto Pirenaico de Ecología; España
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