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61 results for “ultramafics”
FIGURE 2 in Gynura tambuyukonensis (Asteraceae), an obligate ultramafic species endemic to Mount Tambuyukon (Kinabalu Park, Sabah, Malaysia)
FIGURE 2. Gynura tambuyukonensis in the field. A Synflorescence; B Habit of plant creeping over bare ultramafic bedrock (peridotite); C Capitulum; D leaves. Photographs by Antony van der Ent.
FIGURE 1. Gynura tambuyukonensis. A in Gynura tambuyukonensis (Asteraceae), an obligate ultramafic species endemic to Mount Tambuyukon (Kinabalu Park, Sabah, Malaysia)
FIGURE 1. Gynura tambuyukonensis. A habit; B leaf; C capitulum; D phyllary; E floret with pappus; F style; G anthers; H cypsela. Illustration by Wanwisa Bhuchaisri and Pornphen Supachok.
Data from: Distribution patterns of microbial communities in ultramafic landscape: a metagenetic approach highlights the strong relationships between diversity and environmental traits
Microbial species richness and assemblages across ultramafic ecosystems were investigated to assess the relationship between their distributional patterns and environmental traits. The structure of microorganism communities in the Koniambo massif, New Caledonia, was investigated using a metagenetic approach correlated with edaphic and floristic factors. Vegetation cover and soil properties significantly shaped the large phylogenetic distribution of operational taxonomic unit within microbial populations, with a mean per habitat of 3.477 (±317) for bacteria and 712 (±43) for fungi. Using variance partitioning, we showed that the effect of aboveground vegetation was the most significant descriptor for both bacterial and fungal communities. The floristic significant predictors explained 43% of the variation for both the bacterial and fungal community structures, while the edaphic significant predictors explained only 32% and 31% of these variations, respectively. These results confirm the previous hypothesis that the distribution of microorganisms was more structured by the vegetation cover rather than the edaphic characteristics and that microbial diversity is not limited in ultramafic ecosystems.
FIGURE 6 in Massif Speciation Events in New Caledonian Lizards: Diversification in the Genus Marmorosphax (Scincidae) Tracks Isolation on the Island's Ultramafic Surfaces
FIGURE 6. The Mt. Kaala Massif in the distance from the summit of the Massif d'Ouazangou-Taom, separated by the low-lying Iouanga River valley.
FIGURE 3 in Massif Speciation Events in New Caledonian Lizards: Diversification in the Genus Marmorosphax (Scincidae) Tracks Isolation on the Island's Ultramafic Surfaces
FIGURE 3. High elevation forest habitat on the Massif d'Ouazangou-Taom (A) and exposed cuirasse rock cap variably distributed across the summit area and ridges of massifs in the central-west and northwest ultramafic region (B).
FIGURE 8 in Massif Speciation Events in New Caledonian Lizards: Diversification in the Genus Marmorosphax (Scincidae) Tracks Isolation on the Island's Ultramafic Surfaces
FIGURE 8. Distribution of ultramafic surfaces in the central-east region of Grande Terre showing location of populations in the Group 3 M. cf. tricolor lineage and regionally sympatric Group 4 M. tricolor lineage.
FIGURE 7 in Massif Speciation Events in New Caledonian Lizards: Diversification in the Genus Marmorosphax (Scincidae) Tracks Isolation on the Island's Ultramafic Surfaces
FIGURE 7. High elevation ranges of southern Grande Terre (from Pic Ningua), predominately maquis shrubland but with isolated forest at the top of the ranges.
Figure 3 from: Tamayo MN, Bustamante RAA, Fritsch PW (2021) Vaccinium exiguum (Ericaceae, Vaccinieae), a new species from the ultramafic summit of Mt. Victoria, Palawan Island, Philippines. PhytoKeys 179: 145-154. https://doi.org/10.3897/phytokeys.179.68323
Figure 3 Translucent glands of Vaccinium exiguumA leaf margin B calyx lobe C bract. Photos by Maverick N. Tamayo.
Figure 2 from: Tamayo MN, Bustamante RAA, Fritsch PW (2021) Vaccinium exiguum (Ericaceae, Vaccinieae), a new species from the ultramafic summit of Mt. Victoria, Palawan Island, Philippines. PhytoKeys 179: 145-154. https://doi.org/10.3897/phytokeys.179.68323
Figure 2 Vaccinium exiguumA flowering branchlet B leaf, abaxial view C lateral view of flower showing ribbed corolla D distal portion of pedicel, as well as hypanthium, calyx lobes and style E stamen in oblique-lateral view showing spurs F stamen in ventral view G cross section of ovary showing seven locules. Illustrated by Maverick N. Tamayo.
Figure 1 from: Tamayo MN, Bustamante RAA, Fritsch PW (2021) Vaccinium exiguum (Ericaceae, Vaccinieae), a new species from the ultramafic summit of Mt. Victoria, Palawan Island, Philippines. PhytoKeys 179: 145-154. https://doi.org/10.3897/phytokeys.179.68323
Figure 1 Vaccinium exiguumA ultramafic summit of Mt. Victoria B flowering branchlets in situ. Photo A by Alastair Robinson. Photo B by Rene Alfred Anton Bustamante.
Figure 3 from: Fernando ES, Quakenbush JP, Lillo EP, Ong PS (2018) Medinilla theresae (Melastomataceae), a new species from ultramafic soils in the Philippines. PhytoKeys 113: 145-155. https://doi.org/10.3897/phytokeys.113.30027
Figure 3 Medinillatheresae Fernando A Young infructescence showing light green fruits with bright red calyx rim B Mature purplish-black fruits C Seedling showing foliaceus cotyledons and first two pairs of eophylls, c. 20 weeks old, grown in nursery from seed of Fernando 3831. A from Fernando 4217 (LBC) B from Fernando 3831 (LBC). Scale bars: 1 cm (A, B); 2 mm (C). All photos by Edwino S. Fernando.
Figure 4 from: Fernando ES, Quakenbush JP, Lillo EP, Ong PS (2018) Medinilla theresae (Melastomataceae), a new species from ultramafic soils in the Philippines. PhytoKeys 113: 145-155. https://doi.org/10.3897/phytokeys.113.30027
Figure 4 Medinillatheresae Fernando A Habitat on Mt Hamiguitan, forest on ultramafic soils, c. 1200 m elevation B Plant on Mt Hamiguitan with branch showing node with four leaves in a whorl and a pair of pendulous inflorescences. A photo by Edwino S. Fernando B photo by Leonard L. Co.
Figure 2 from: Fernando ES, Quakenbush JP, Lillo EP, Ong PS (2018) Medinilla theresae (Melastomataceae), a new species from ultramafic soils in the Philippines. PhytoKeys 113: 145-155. https://doi.org/10.3897/phytokeys.113.30027
Figure 2 Medinillatheresae Fernando A Pendulous inflorescences arising from nodes near base of main stem and showing flower buds with rounded tips B Inflorescence with buds and open flowers C Close up of open flower. A from Fernando 4166 (LBC) B, C from Fernando 3831 (LBC). Scale bars: 1 cm (A); 8 mm (B); 2 mm (C). All photos by Edwino S. Fernando.
Figure 1 from: Fernando ES, Quakenbush JP, Lillo EP, Ong PS (2018) Medinilla theresae (Melastomataceae), a new species from ultramafic soils in the Philippines. PhytoKeys 113: 145-155. https://doi.org/10.3897/phytokeys.113.30027
Figure 1 Medinillatheresae Fernando A Habitat at type locality, dwarf forest on ultramafic soils, c. 840 m elevation, Mt Redondo with Mt Kambinliw in the background B Terrestrial, erect growth habit C Leafy branch showing leaves arranged in a whorl and secondary veins faintly visible on adaxial surface D Dried leaf showing adaxial surface with distinct pair of secondary veins E Abaxial surface of same leaf in D without the distinct pair of secondary veins. B, D, E from Fernando 3831 (LBC), C from Fernando 4166 (LBC). Scale bars: 10 cm (B); 2 cm (C–E). All photos by Edwino S. Fernando.
Petrology, Age, and Rift Origin of Ultramafic Lamprophyres (Aillikites) at Mount Webb, a New Alkaline Province in Central Australia
<p>APPENDIX_A: LA-ICP-MS and EPMA analyses for pyrope garnet and Cr diopside used in study.</p>
Data from: Distribution patterns of microbial communities in ultramafic landscape: a metagenetic approach highlights the strong relationships between diversity and environmental traits
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Thermal emission spectra of ultramafic to felsic rocks
<p>This data set contains two files. One file contains thermal emission spectra of 10 rock samples. Data were collected at Arizona State University in the early 2000's. Most samples were purchased from Ward's. The other file contains the same spectra, degraded to the spectral bandpasses of the Mars Odyssey Thermal Emission Imaging System (THEMIS). All lab spectra were measured from rock hand samples (not particulate samples).</p> <p>These data were shown in: </p> <p>Rogers, A. D. and H. Nekvasil (2015), Feldspathic rocks on Mars: Compositional constraints from infrared spectroscopy and possible formation mechanisms, Geophys. Res. Lett., 42, 2619-2626, doi: 10.1002/2015GL063501.</p> <p>Most rocks are from the Ward's North American Rocks collection. https://www.wardsci.com/store/product/8869973/classic-north-american-rock-collection. </p> <p>The xaxis for the spectra at lab resolution is in units of wavenumber (cm^-1).</p> <p>The xaxis for the spectra at THEMIS resolution is in units of wavelength (microns).</p>
FIGURES –. Relatively rare Achnanthales (SEM, New Caledonia, Melanesia). Cocconeis margaritata Riaux-Gobin & Al-Handal, oblong SV areolae bordered by siliceous small beads (37–38), Cocconeis paucistriata Riaux-Gobin, Romero, Compère & Al-Handal (39, 40), SV striae composed of a unique areola on each side of the SV sternum (40, arrow), two (to three) marginal areolae (39, 40), simple process apertures on SV mantle (40, twin arrowheads). Cocconeis sigillata Riaux-Gobin & Al-Handal (41), low marginal crista marginalis and biseriate striae (41, arrowhead) split in two parts by an axial raised area. Achnanthidium glyphos Riaux-Gobin, Compère & Witkowski (42), naviculoïd SV shape, one row of marginal oblong SV areolae (42, arrowhead). See the RV of these taxa on their original description (refs cited above). Scale bars = 3 µm (37), 2 µm (42), 500 nm (40), 400 nm (38). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment
FIGURES –. Relatively rare Achnanthales (SEM, New Caledonia, Melanesia). Cocconeis margaritata Riaux-Gobin & Al-Handal, oblong SV areolae bordered by siliceous small beads (37–38), Cocconeis paucistriata Riaux-Gobin, Romero, Compère & Al-Handal (39, 40), SV striae composed of a unique areola on each side of the SV sternum (40, arrow), two (to three) marginal areolae (39, 40), simple process apertures on SV mantle (40, twin arrowheads). Cocconeis sigillata Riaux-Gobin & Al-Handal (41), low marginal crista marginalis and biseriate striae (41, arrowhead) split in two parts by an axial raised area. Achnanthidium glyphos Riaux-Gobin, Compère & Witkowski (42), naviculoïd SV shape, one row of marginal oblong SV areolae (42, arrowhead). See the RV of these taxa on their original description (refs cited above). Scale bars = 3 µm (37), 2 µm (42), 500 nm (40), 400 nm (38).
FIGURE 4 in Psychotria pendens (Rubiaceae, Psychotrieae), a new ultramafic species from Central Palawan, Philippines
FIGURE 4. Maximum-likelihood tree showing the phylogenetic placement of Psychotria pendens within Rubiaceae. Numbers on each node represent the bootstrap support values.
Magnetic properties of ultramafic rocks in the Troodos ophiolite, with compiled oxygen & hydrogen isotope data and magnetic susceptibility of serpentinites from different tectonic settings
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Allen Brain Atlas
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