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37 results for “leaf functional traits”
Effects of long-term mowing on leaf- and root-associated bacterial community structures are linked to functional traits in 11 plant species from a temperate steppe
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Quantitative trait locus mapping reveals an independent genetic basis for joint divergence in leaf function, life-history, and floral traits between scarlet monkeyflower (Mimulus cardinalis) populations
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Scale-dependent variation in leaf functional traits clarifies mechanisms of invasion
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Functional traits and drought strategy predict leaf thermal tolerance
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Genotype-environment interactions shape leaf functional traits of cacao in agroforests
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Data from: Ontogenetic changes in the phenotypic integration and modularity of leaf functional traits
1.Changes in resource availability, functional demands, hormonal regulation and developmental constraints can promote differences in the expression of leaf traits during plant development and foster changes in the targets of natural selection. As a consequence, the pattern and magnitude of covariation among traits, and therefore their phenotypic integration and modularity are equally expected to change throughout ontogeny. However, these changes have not been described yet. 2.We measured leaf economic, defensive and morphological traits in plants of Turnera velutina and estimated the magnitude and pattern of foliar integration and modularity for juvenile and reproductive individuals. In addition, we assessed the relationship between plant biomass and foliar integration within and among ontogenetic stages. 3.Both the pattern and magnitude of foliar integration changed across plant ontogeny. Foliar integration was lower in juvenile than in reproductive plants, and the pattern of phenotypic integration and modularity was different between ontogenetic stages: whereas leaves from juvenile plants showed two functional modules related to plant defence and leaf economy, traits from reproductive plants had greater interconnectivity and hence lower modularity. 4.The relationship between plant biomass and foliar integration was negative within each ontogenetic stage but positive between ontogenetic stages, suggesting that processes intrinsic to plant development influenced the magnitude of foliar integration to a greater extent than plant size. 5.Our findings indicate that plants can change the patterns of covariation among leaf traits during their development. Whereas a lower foliar integration in juvenile plants could allow for greater lability to explore a multi-trait phenotypic space, canalization of leaf attributes along ontogeny should promote greater phenotypic integration, constraining the number of multi-trait combinations that plants can express. Hence, we suggest that ontogenetic changes in foliar integration allow plants to deal with changing selective dynamics and physiological priorities along their development.
Size- and environment-driven seedling survival and growth are mediated by leaf functional traits
<p><span>Ecologists usually find that plant demography (e.g., survival and growth) changes along with plant size and environmental gradients, which suggests the effects of ontogeny-related processes and abiotic filtering. However, the role of functional traits underlying the plant size- and environment-demography relationships is usually overlooked. By measuring the individual-level leaf traits of more than 2700 seedlings in a temperate forest, we evaluated how seedling functional traits mediated the size- and environment-demography relationships. First, we found leaves were larger for taller seedlings, leaf economics traits were more conservative in taller seedlings and under high light and low elevation conditions. Then, structural equation modeling showed that a higher survival probability for taller seedlings was indirectly driven by their larger leaf area. Although taller seedlings had lower growth rates, larger and more resource-conservative leaves could promote the growth rate of these tall seedlings. Environmental variables did not appear to influence seedling survival and growth directly but did influence growth indirectly by mediating trait variation. Finally, species-specific variation in traits along with size and environments was associated with the species-specific variation in seedling survival and growth. Our study suggests that, not only plant ontogeny- and environment-related ecological processes, functional traits are also important intermediary agents underlying the usually observed plant size- and environment-demography relationships.</span></p>
Data from: Convergent effects of elevation on functional leaf traits within and among species
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Data from: Sampling intraspecific variability in leaf functional traits: practical suggestions to maximize collected information
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Size- and environment-driven seedling survival and growth are mediated by leaf functional traits
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Data from: Ontogenetic changes in the phenotypic integration and modularity of leaf functional traits
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Data from: Variation in leaf anatomical traits from tropical to cold-temperate forests and linkage to ecosystem functions
1. Leaf anatomical traits may reflect plant's adaption to environmental changes and influence ecosystem functions, as they regulate light absorption and gas exchange to some extent. Here, we hypothesized that leaf anatomical traits were closely related to gross primary productivity (GPP) because photosynthesis commonly occurs in the chloroplasts of palisade and spongy tissues in leaf. 2. Eight leaf anatomical traits were measured in 916 plant species inhabiting from tropical to cold-temperate forests in eastern China: adaxial epidermis thickness (AD), abaxial epidermis thickness (AB), leaf thickness (LT), palisade tissue thickness (PT), and spongy tissue thickness (ST), palisade-spongy tissue ratio (PT/ST), palisade tissue-leaf thickness ratio (PT/LT), and spongy tissue-leaf thickness ratio (ST/LT). 3. Leaf anatomical traits showed significant latitudinal patterns at species, plant functional groups (PFGs), and communities levels (P < 0.05), and they differed between PFG and community. Temperature and precipitation were the main factors influencing AD, AB, PT/ST, and PT/LT, explaining 33–72% of the total variation at large scale. Furthermore, AB, LT, PT/ST, and PT/LT were significantly correlated with the aridity index. 4. Our findings filled the data gap of plant anatomical traits at regional scales, and broadened current knowledge on the adaptation strategies of plant anatomical traits, which also provided new evidence for linkages of plant traits and functioning across natural communities.
Functional leaf and root traits Espeletia Colombia
<p>Values for leaf and root functional traits of species belonging to the Espeletiinae subtribe. </p>
Leaf functional traits and insular colonization: subtropical islands as a melting pot of trait diversity in a widespread plant lineage
<p><strong>Aim: </strong>One of the main goals of functional biogeography is to examine distribution patterns of trait diversity, and islands provide excellent study cases for this emerging field. We tested the hypothesis that multiple dispersals from a common mainland pool would promote functional similarity among island systems when environmental conditions are similar, but also novel phenotypic traits related to colonization history and exploitation of new habitats.</p> <p><strong>Location: </strong>Mediterranean Basin and Macaronesian islands</p> <p><strong>Methods:</strong> We used the well-known biogeographical history of a woody plant complex (Periploca laevigata s.l.) to examine trait variation and how it relates to climatic conditions of mainland and subtropical island settings. In a common garden experiment, we measured a suite of leaf physiological and anatomical traits tightly related to plant performance in 320 seedlings representing 21 populations of five sublineages: the oldest (2.6 my) island colonization (western Canary Islands) as a reference, three sublineages stemming from independent events of island colonization in the last 0.5 my from NW Africa (Cape Verde, Fuerteventura, Lanzarote), and their widespread Mediterranean mainland counterpart.</p> <p><strong>Results:</strong> We observed strong phenotypic divergence between island and mainland sublineages linked to contrasting climatic conditions. Mediterranean mainland populations displayed a very specialized leaf phenotype characteristic of arid plants (i.e. small leaves, amphistomaty, isobilateral mesophyll, high photosynthetic rates). In turn, low seasonality on islands was linked to the recurrent expression of a phenotype characterized by larger leaves and lower photosynthetic rates. Our analyses showed that the high investment in secondary compounds (i.e. tannins) on islands decouples photosynthesis from growth rates. Despite this pattern of parallel differentiation, each island sublineage displayed a distinctive phenotype, with some traits related to colonization time, which resulted in a mosaic of functional variation across island systems.</p> <p><strong>Main conclusions: </strong>Our data suggest that the studied subtropical islands promote expression of traits specific to certain sublineages and other common traits that are no untypeset proof Page 2 of 50 Journal of Biogeography longer adaptive in the original mainland pool due to Pleistocene climatic shifts. These findings ultimately extend the role of islands as biodiversity refugia and hotspots of plant functional diversity.</p>
Data from: Variation in leaf anatomical traits from tropical to cold-temperate forests and linkage to ecosystem functions
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Leaf functional traits and insular colonization: subtropical islands as a melting pot of trait diversity in a widespread plant lineage
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Data from: Are leaf functional traits “invariant” with plant size, and what is “invariance” anyway?
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