Congruency analysis of species ranking based on leaf traits: which traits are the more reliable?

Roche, Philip; Díaz-Burlinson, Natalia; Gachet, Sophie

doi:10.1023/b:vege.0000046056.94523.57

Cited by 135 publications

(119 citation statements)

References 45 publications

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“…Importantly, our hierarchical design allows us to measure and remove the effects of lower scales from higher scales and ascribe the variation of individual scales to one or a few drivers of phenotypic variation. Given the sampling design, the main drivers of phenotypic variation associated with each of the scales are as follow: 1) the leaf scale mainly reflects the ontogenetic effects of metamer and module position; 2) the strata scale mostly reflects plastic responses to the vertical light gradient in the canopy; 3) the tree scale mainly reflects genetic differences within a species and micro-environmental gradients; 4) the species scale mainly reflects genetic differences resulting from adaptive evolution and drift; 5) the plot of variation for these traits (Roche et al 2004, Albert et al 2010, Hulshof and Swenson 2010, Messier et al 2010, Auger and Shipley 2012, Kang et al 2014. Table 2 shows the fraction of the total variance occurring at the species scale within each study though to be strongly correlated for two traits-leaf mass per area (LMA) and leaf dry matter content (LDMC).…”

Section: Sampling Design and Ecological Scalesmentioning

confidence: 99%

Trait variation and integration across scales: is the leaf economic spectrum present at local scales?

et al. 2016

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Trait-based approaches have taken an increasingly dominant role in community ecology. Although trait-based strategy dimensions such as the leaf economic spectrum (LES) have been identified primarily at global-scales, trait variation at the community scale is often interpreted in this context. Here we argue from several lines of evidence that a research priority should be to determine whether global-scale trait relationships hold at more local scales. We review recent literature assessing trait variation at smaller scales, and then present a case study exploring the relationship between the correlation strength of leaf traits and their similarity in variation structure across ecological scales. We find that the correlation strength between pairs of leaf traits does not predict whether the traits respond similarly to different drivers of variation. Instead, correlation strength only sets an upper bound to the dissimilarity in trait variation structure. With moderate correlation strengths, LES traits largely retain the ability to respond independently to different drivers of phenotypic variation at different scales. Recent literature and our results suggest that LES relationships may not hold at local scales. Clarifying under what conditions and at which scales the LES is consistently expressed is necessary for us to make the most of the emerging trait toolbox.

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Section: Sampling Design and Ecological Scalesmentioning

confidence: 99%

Trait variation and integration across scales: is the leaf economic spectrum present at local scales?

et al. 2016

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“…Traits of dominant life forms may vary widely across climatic gradients, but may also display large variation among coexisting life forms at a single site (Fonseca et al 2000;Austin and Sala 2002;Carrera et al 2003). Many studies have been oriented to identify the main trade oVs that characterize plant performance and their convergence in a wide range of habitats (Cornelissen 1999;Cornelissen et al 1999;Aerts and Chapin 2000;Fonseca et al 2000;Wright et al , 2004Reich et al 2004;Roche et al 2004;Bertiller et al 2005). In a recent study, Wright et al (2004) analyzed a worldwide spectrum of green leaf traits Wnding a large overlapping among plant functional types or growth forms and a low modulation of climate on them.…”

Section: Introductionmentioning

confidence: 99%

Leaf strategies and soil N across a regional humidity gradient in Patagonia

et al. 2006

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We analyzed leaf traits related to carbon-fixation, nutrient conservation strategies, and decomposability and their relationships with potential N-mineralization and microbial N in soil in 19 species of 5 dominant life forms growing in 40 sites across a regional humidity gradient in northern Patagonia. We hypothesized that (1) the shifting of species and life forms across the humidity gradient is related to a shifting in traits of green and senesced leaves with some overlapping among life forms, and (2) leaf traits associated with litter decomposition are related to the potential dynamics of soil-N across the humidity gradient. LMA in green leaves and P-resorption efficiency decreased with humidity while concentrations of lignin and total phenolics in green and senesced leaves and P concentration in senesced leaves increased with humidity. Soil C and N concentrations were positively correlated to humidity. Increasing soil N concentration was related to increasing rates of absolute (per unit soil mass) potential net N-mineralization and microbial-N flush. Relative (per unit N mass) potential net N-mineralization and microbial-N flush decreased with soil N and were inversely correlated to lignin concentration and C/N ratio in senesced leaves. We found overlapping in N concentration and C/N ratio in green and senesced leaves, P concentration in green leaves, and N resorption among species and life forms across the humidity gradient. We concluded that (1) leaf traits related to carbon fixation and the decomposition pathway significantly varied with humidity and were not overlapped between plant life forms from dry and humid habitats, (2) the largest overlapping among species and plant life forms across the gradient occurred in those leaf traits related to N conservation in the plant, and (3) life forms from humid habitats produce more recalcitrant litter that induce lower rates of relative potential net N mineralization (per unit N) than those of dry habitats.

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“…Leaf traits are globally repeated despite large variations in the values of the traits across individual species with very diverse phylogenetic, biogeographical and environmental affinities. As well, leaf traits can thus provide a link between various environmental factors and leaf functions, and they have been widely used in functional-structural plant models [3]. Morphological and anatomic characters of leaf are used as taxonomic markers to assist in the correct identification of the plant species.…”

Section: Morphological and Anatomical Characters Of Leafmentioning

confidence: 99%

Comparative morph-anatomical studies on selected Sudanese medicinal plants: part iv. abutilon figarianum and abutilon pannosum leaves

2017

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In this study, macro and micro morphology of the leaves of Abutilon figarianum and Abutilon pannosum(Malvaceae) were compared to assist as a relevant source of information and contribute towards the standards to dispose the quality and identity of these plants to avoid adulterations. Laminar size, shape, marginal type, leaf length, width, petiole length, leaf base angle and leaf apex angle were observed and measured. The relationships were illustrated by differences of radar shape. Transverse sections of the leaves were done using wax method. Three regions from each leaf were sectioned apex, middle and base. The epidermises formed of one layer of small polygonal cells covered by mucilage, large numbers of epidermal hairs appeared. The two leaves are dorsiventral. The vascular bundles arch shaped surrounded by collenchymas and ground parenchyma. Xylem consists of radial rows of cells. The phloem is found beneath. The structures at the apex, middle and bases of the leaves are similar, trichomes are denser in the middle region followed by the upper and lastly the lower region. Calcium oxalate druses are appeared in some parenchyma cells of the mid rib region, and these are of large numbers in the basal region.

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Congruency analysis of species ranking based on leaf traits: which traits are the more reliable?

Cited by 135 publications

References 45 publications

Trait variation and integration across scales: is the leaf economic spectrum present at local scales?

Trait variation and integration across scales: is the leaf economic spectrum present at local scales?

Leaf strategies and soil N across a regional humidity gradient in Patagonia

Comparative morph-anatomical studies on selected Sudanese medicinal plants: part iv. abutilon figarianum and abutilon pannosum leaves

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