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9,671 results for “Leaf”
Arisaema dracontium (Araceae) - leaf - basal or on lower stem
Image of Arisaema dracontium (Araceae) - leaf - basal or on lower stem
Arisaema dracontium (Araceae) - leaf - margin of upper + lower surface
Image of Arisaema dracontium (Araceae) - leaf - margin of upper + lower surface
Passiflora lutea (Passifloraceae) - leaf - basal or on lower stem
Image of Passiflora lutea (Passifloraceae) - leaf - basal or on lower stem
Passiflora lutea (Passifloraceae) - stem - showing leaf bases
Image of Passiflora lutea (Passifloraceae) - stem - showing leaf bases
Passiflora lutea (Passifloraceae) - leaf - basal or on lower stem
Image of Passiflora lutea (Passifloraceae) - leaf - basal or on lower stem
Jeffersonia diphylla (Berberidaceae) - leaf - basal or on lower stem
Image of Jeffersonia diphylla (Berberidaceae) - leaf - basal or on lower stem
Hydrastis canadensis (Ranunculaceae) - stem - showing leaf bases
Image of Hydrastis canadensis (Ranunculaceae) - stem - showing leaf bases
Jeffersonia diphylla (Berberidaceae) - stem - showing leaf bases
Image of Jeffersonia diphylla (Berberidaceae) - stem - showing leaf bases
Silene latifolia (Caryophyllaceae) - stem - showing leaf bases
Image of Silene latifolia (Caryophyllaceae) - stem - showing leaf bases
FIGURE 4 in Taxon-specific variability of leaf traits in three long-ranging fossil-species of the Paleogene and Neogene: Responses to climate?
FIGURE 4. Site-specific data for lamina length and lamina width plotted for each taxon. 4A: Lamina length for Platanus neptuni. 4B: Lamina width for P. neptuni. 4C: Lamina length for Eotrigonobalanus furcinervis. 4D: Lamina width for E. furcinervis. 4E: Lamina length for Daphnogene cinnamomifolia. 4F: Lamina width for D. cinnamomifolia. The boxes span the 50% interquartile. The horizontal lines within the boxes indicate the median values. The "whiskers" mark the highest and lowest values. Outliers located at a distance of up to 1.5 times the quartile span outside the whiskers are drawn as asterisks, and extreme outliers are drawn as circles. Different minuscule letters indicate statistically significant differences among sites. Colors indicate deposit type. Colors indicate deposit type. Green: fluviatile. Red: volcanic. Blue: marine. Lines delimit age groups. LE: Late Eocene. EO: Early Oligocene. LO: Late Oligocene. EM: Early Miocene. For site numbers and dating see Table 1.
FIGURE 1 in Taxon-specific variability of leaf traits in three long-ranging fossil-species of the Paleogene and Neogene: Responses to climate?
FIGURE 1. Map showing the locations of the considered sites, which are numbered according to Table 1.
FIGURE 3 in Taxon-specific variability of leaf traits in three long-ranging fossil-species of the Paleogene and Neogene: Responses to climate?
FIGURE 3. Site-specific data for lamina area and lamina perimeter plotted for each taxon. 3A: Lamina area for Platanus neptuni. 3B: Lamina perimeter for P. neptuni. 3C: Lamina area for Eotrigonobalanus furcinervis. 3D: Lamina perimeter for E. furcinervis. 3E: Lamina area for Daphnogene cinnamomifolia. 3F: Lamina perimeter for D. cinnamomifolia. The boxes span the 50% interquartile. The horizontal lines within the boxes indicate the median values. The "whiskers" mark the highest and lowest values. Outliers located at a distance of up to 1.5 times the quartile span outside the whiskers are drawn as asterisks, and extreme outliers are drawn as circles. Different minuscule letters indicate statistically significant differences among sites. Colors indicate deposit type. Green: fluviatile. Red: volcanic. Blue: marine. Lines delimit age groups. LE: Late Eocene. EO: Early Oligocene. LO: Late Oligocene. EM: Early Miocene. For site numbers and dating see Table 1.
FIGURE 6 in Taxon-specific variability of leaf traits in three long-ranging fossil-species of the Paleogene and Neogene: Responses to climate?
FIGURE 6. Site-specific data for lamina centroid and leaf length-to-width ratio (LWR) plotted for each taxon. 6A: Lamina centroid for Platanus neptuni. 6B: LWR for P. neptuni. 6C: Lamina centroid for Eotrigonobalanus furcinervis. 6D: LWR for E. furcinervis. 6E: Lamina centroid for Daphnogene cinnamomifolia. 6F: LWR for D. cinnamomifolia. The boxes span the 50% interquartile. The horizontal lines within the boxes indicate the median values. The "whiskers" mark the highest and lowest values. Outliers located at a distance of up to 1.5 times the quartile span outside the whiskers are drawn as asterisks, and extreme outliers are drawn as circles. Different minuscule letters indicate statistically significant differences among sites. Colors indicate deposit type. Colors indicate deposit type. Green: fluviatile. Red: volcanic. Blue: marine. Lines delimit age groups. LE: Late Eocene. EO: Early Oligocene. LO: Late Oligocene. EM: Early Miocene. For site numbers and dating see Table 1.
FIGURE 2 in Taxon-specific variability of leaf traits in three long-ranging fossil-species of the Paleogene and Neogene: Responses to climate?
FIGURE 2. Plasticity index (PI) of various leaf traits, for the considered sites and taxa. 2A: PI for lamina area. 2B: PI for lamina length. 2C: PI for lamina perimeter. 2D: PI for lamina width. 2E: PI for lamina circularity. 2F: PI for lamina centroid. Squares: Platanus neptuni. Circles: Daphnogene cinnamomifolia. Triangles: Eotrigonobalanus furcinervis. Colors indicate deposit type. Green: fluviatile. Red: volcanic. Blue: marine. Lines delimit age groups. LE: Late Eocene. EO: Early Oligocene. LO: Late Oligocene. EM: Early Miocene. For site numbers and dating see Table 1.
FIGURE 5 in Taxon-specific variability of leaf traits in three long-ranging fossil-species of the Paleogene and Neogene: Responses to climate?
FIGURE 5. Site-specific data for lamina circularity and lamina roundness plotted for each taxon. 5A: Lamina circularity for Platanus neptuni. 5B: Lamina roundness for P. neptuni. 5C: Lamina circularity for Eotrigonobalanus furcinervis. 5D: Lamina roundness for E. furcinervis. 5E: Lamina circularity for Daphnogene cinnamomifolia. 5F: Lamina roundness for D. cinnamomifolia. The boxes span the 50% interquartile. The horizontal lines within the boxes indicate the median values. The "whiskers" mark the highest and lowest values. Outliers located at a distance of up to 1.5 times the quartile span outside the whiskers are drawn as asterisks, and extreme outliers are drawn as circles. Different minuscule letters indicate statistically significant differences among sites. Colors indicate deposit type. Colors indicate deposit type. Green: fluviatile. Red: volcanic. Blue: marine. Lines delimit age groups. LE: Late Eocene. EO: Early Oligocene. LO: Late Oligocene. EM: Early Miocene. For site numbers and dating see Table 1.
FIGURE 7. Age-specific discriminant analysis using all morphometric parameters for all sites. 7A in Taxon-specific variability of leaf traits in three long-ranging fossil-species of the Paleogene and Neogene: Responses to climate?
FIGURE 7. Age-specific discriminant analysis using all morphometric parameters for all sites. 7A: Eocene. 7B: Oligocene. Triangles: Platanus neptuni. Squares: Eotrigonobalanus furcinervis. Circles: Daphnogene cinnamomifolia.
FIGURE 8 in Taxon-specific variability of leaf traits in three long-ranging fossil-species of the Paleogene and Neogene: Responses to climate?
FIGURE 8. Circularity plotted against LWR. Blue circles: Platanus neptuni. Red squares: Eotrigonobalanus furcinervis. Yellow diamonds: Daphnogene cinnamomifolia. Black line: Relationship between circularity and length-towidth ratio of an ellipse. Please note that this relationship was calculated by using an approximate equation for the perimeter of an ellipse, which causes the slight deflection of the curve for high circularity values. As approximation, the following equation for the ellipse perimeter (EP) was used: EP = π* [2 * (a2 + b2)1/2].
Spectral and trait data for Rapid estimates of leaf litter chemistry using reflectance spectroscopy
<p>Measuring the chemical traits of leaf litter is important for understanding plants' roles in nutrient cycles, including through nutrient resorption and litter decomposition, but conventional leaf trait measurements are often destructive and labor-intensive. Here, we develop and evaluate the performance of partial least-squares regression (PLSR) models that use reflectance spectra of intact or ground leaves to estimate leaf litter traits, including carbon and nitrogen concentration, carbon fractions, and leaf mass per area (LMA). Our analyses included more than 300 samples of senesced foliage from 11 species of temperate trees, including needleleaf and broadleaf species. Across all samples, we could predict each trait with moderate-to-high accuracy from both intact-leaf litter spectra (validation <em>R<sup>2</sup></em> = 0.543-0.941; %RMSE = 7.49-18.5) and ground-leaf litter spectra (validation <em>R<sup>2</sup></em> = 0.491-0.946; %RMSE = 7.00-19.5). Notably, intact-leaf spectra yielded better predictions of LMA. Our results support the feasibility of building models to estimate multiple chemical traits from leaf litter of a range of species. In particular, the success of intact-leaf spectral models allows non-destructive trait estimation in a matter of seconds, which could enable researchers to measure the same leaves over time in studies of nutrient resorption.</p>
Fig. 5 in A new blood parasite of leaf warblers: molecular characterization, phylogenetic relationships, description and identification of vectors
Fig. 5 Sporogonic stages of Haemoproteus homopalloris n. sp. in tce biting midge Culicoides nubeculosus. Zygote (a) and sporozoite (b). Arrowcead: pigment granuges; arrow: sporozoite nucgeus. Metcanog-fixed and Giemsa-stained tcin figms. Scale-bar: a, b, 10 μm
Fig. 2 in A new blood parasite of leaf warblers: molecular characterization, phylogenetic relationships, description and identification of vectors
Fig. 2 Bayesian pcygogenetic inference of cytb gene gineages (479 bp) of 35 Haemoproteus spp. Tce tree is rooted witc Leucocytozoon sp. (gineage gSISKIN2). Cgades A and B indicate species of tce subgenus Parahaemoproteus (a) and caemoproteids witc page-staining cytopgasm of gametocytes (b). MagAvi gineage codes are provided, foggowed by parasite species names and GenBank accession numbers. Nodag support vagues indicate Bayesian posterior probabigities. New species is given in bogd
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OpenNeuro
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