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483 results for “Qinghai”
FIGURE 2 in Two new species of Rhodiola (Crassulaceae) from the Qinghai-Tibetan Plateau
FIGURE 2. Bayesian tree of Rhodiola species based on the analysis of three plastid markers. Bayesian posterior probabilities (PP) and MP bootstrap (BP) values are shown above the branches (PP/BP). Hyphen (-) indicates bootstrap support<50.
FIGURE 1 in Two new species of Rhodiola (Crassulaceae) from the Qinghai-Tibetan Plateau
FIGURE 1. Bayesian tree of Rhodiola species based on the analysis of ITS sequences. Bayesian posterior probabilities (PP) and MP bootstrap (BP) values are shown above the branches (PP/BP). Hyphen (-) indicates bootstrap support<50.
FIGURE 2 in A new species of Ptilagrostis (Stipeae, Poaceae) from Qinghai-Tibet Plateau
FIGURE 2. Ptilagrostis arcuata: A–B. habitat; C. habit; D. panicle; E. basal leaves; F. base of panicle (without bracts); G. floret (arcuate awn); R. chromosomes; S. karyotype. P. concinna: H. habit; I. panicle; J. basal leaves; K. base of panicle (with membranous bracts); L. floret (unigeniculate awn); P. junatovii: M. habit; N. panicle; O. basal leaves; P. base of panicle (without bracts); Q. floret (unigeniculate awn). Bars in G, L, Q represent 5 mm; in E, J, O represent 1 mm; in R, S represent 5 μm.
FIGURE 1. Ptilagrostis arcuata. A in A new species of Ptilagrostis (Stipeae, Poaceae) from Qinghai-Tibet Plateau
FIGURE 1. Ptilagrostis arcuata. A. habit; B. ligule; C. base of the panicle (without bract); D. spikelet; E. glume; F. lower glume; G. upper glume; H. floret. Drawn by Ms. Zhi-Juan Chen based on the type (Z. S. Zhang & L. L. Li 217).
FIGURE 2 in Achnatherum pilosum (Stipeae, Poaceae), a new species from Qinghai-Tibet Plateau
FIGURE 2. Achnatherum pilosum (Zhang 2379, PE): A. Habitat; B. Habit; C. Panicles of A. pilosum, A. inaequiglume, A. inebrians, A. psilantherum, and A. saposhnikovii (from left to right); D. Glumes and floret; I. Lemma and proximal part of the awn; N. Anthers; S. Lemma epidermal pattern, scanning electron microscope micrograph; T. Chromosome number, mitotic metaphase. A. inaequiglume (Zhang 1303, PE): E. Glumes and floret; J. Lemma and proximal part of the awn; O. Anthers; A. inebrians (Zhang 2353, PE): F. Glumes and floret; K. Lemma and proximal part of the awn; P. Anthers; A. psilantherum (Zhang 2509, PE): G. Glumes and floret; L. Lemma and proximal part of the awn; Q. Anthers; A. saposhnikovii (Zhang 347, PE): H. Glumes and floret; M. Lemma and proximal part of the awn; R. Anthers. Scale bars: C = 5 cm; D–M = 2 mm; N–R = 1 mm; S = 10 μm; T = 5 μm.
FIGURE 1 in Achnatherum pilosum (Stipeae, Poaceae), a new species from Qinghai-Tibet Plateau
FIGURE 1. Achnatherum pilosum: A. Habit; B. Ligule; C. Glumes; D. Floret; E. Lemma, dorsal view; F. Floret, lateral view; G. Lemma, ventral view; H. Palea, dorsal view; I. Palea, ventral view; J. Lodicules; K. Anthers; L. Caryopsis, dorsal view, showing the embryo. Scale bars: A = 1 cm; B–L = 1 mm. Drawn by Mr. Zhong-Shuai Zhang (based on Zhang 2379).
FIGURE 1 in A new species of Pertusaria (Pertusariaceae, Ascomycota) from Qinghai-Tibet Plateau of China
FIGURE 1. Pertusaria tibetensis (G.Y. Han 20073197). A. Morphology (bar = 1 mm); B. Apothecia (bar = 1 mm).C. Ascus (bar = 50 μm); D. Ascospore (bar = 50 μm).
Distinct strategies of microeukaryotic generalists and specialists in Qinghai–Tibet Plateau sediment driven by salinity
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Data from: History and evolution of alpine plants endemic to the Qinghai-Tibetan Plateau: Aconitum gymnandrum (Ranunculaceae)
How Quaternary climatic oscillations affected range distributions and intraspecific divergence of alpine plants on the Qinghai-Tibetan Plateau (QTP) remains largely unknown. Here we report a survey of chloroplast (cp) and nuclear ribosomal (ITS) DNA variation aimed at exploring the phylogeographic history of the QTP alpine endemic Aconitum gymnandrum. We sequenced three cpDNA fragments (rpl20-rps12 intergenic spacer, the trnV intron and psbA-trnH spacer) and also the nuclear (ITS) region in 245 individuals from 23 populations sampled throughout the species' range. Two distinct lineages with east and west geographical distributions respectively were identified from a phylogenetic analysis of ITS sequence variation and the divergence were estimated to be around 1.45 Ma. Nine chlorotypes that clustered into two major clades were broadly congruent in geographical distribution with the two ITS lineages, which was also supported by an analysis of molecular variance (AMOVA). Analysis of the spatial distribution of chlorotypes and coalescent simulation of chlorotype genealogies supported both an early Pleistocene origin of the two main cpDNA clades and the four-refugia hypothesis during the LGM. Two previous phylogeographic studies of QTP alpine plants indicated that such plants retreated to refugia at the eastern/south-eastern plateau edge during the LGM and/or previous glacial maxima. However, the results for A. gymnandrum suggest that at least some of these cold tolerant species may have also survived centrally on the QTP platform throughout the Quaternary.
Data from: Effectiveness of complementary food supplement and dietary counseling on anemia and stunting in children aged 6-23 months in poor areas in Qinghai Province, China: a controlled interventional study
Objective: To assess the effectiveness of dietary counseling and complementary food supplements on anemia and stunting prevalence in children aged 6-23 months. Design: A controlled intervention study with measurements of height and hemoglobin levels, and cross-sectional surveys in August 2012 (baseline) and 2013 and 2014 (end-line). Setting: One intervention and control county in rural Qinghai Province, China. Intervention: Complementary food supplements (containing protein, fat, carbohydrate, vitamin A, B1, B2, B12, D3, folic acid, iron, zinc, and calcium) and complementary feeding counseling were given in the intervention county. Participants: Caregivers and their children aged 6-23 months. Primary and secondary outcomes measures: The effect of the interventions on anemia (hemoglobin< 110g/L) and stunting (z-score of height-for-age< -2.0) prevalence(controlled for differences between the counties), and infant feeding practices. Results: The surveys were conducted among 1804, 2187, and 2186 child aged 6-23 months in the intervention county in August 2012, 2013 and 2014 respectively, and 804, 680 and 790 children in the control county respectively. Between baseline and end-line, anemia prevalence decreased more in the intervention county compared to the control county (71.1% to 47.8% vs 86.3% to 75.3%, respectively; P<0.0001). There was no difference in the decrease in stunting prevalence between the counties (9.7% to 7.1% vs 17.0% to 15.0%; P=0.7954). The proportions of children given iron-rich or -fortified food, introduced (semi-) solid food at 6-8 months, and given food with minimum dietary diversity increased from 43.2% to 88.8% (P<0.0001), 81.4% to 96% (P=0.0470), and 53.0% to 59.8% (P<0.0001), respectively. Conclusions: We found much higher anemia prevalence in poor rural areas of Qinghai Province compared to national data. Community-based complementary food supplements combined with dietary counseling can improve feeding practices and reduce anemia prevalence. Future studies should use longer follow-up to assess the effects on stunting.
Effects of experimental warming on vegetative and reproductive characters of P. viviparaum in the Qinghai-Tibet Plateau
<p>This dataset contains data from a simulated warming experiment described in the paper: "Zhang, C., Li, XT., and An, YM. Effects of experimental warming on vegetative and reproductive growth of <em>Polygonum viviparaum</em> in the Qinghai-Tibet Plateau. Nordic Journal of Botany. DOI: 10.1111/njb.03157". </p> <p>The experiment investigated <i>Polygonum viviparaum</i>, a perennial herb distributed widely in arctic and alpine regions, under two different levels of experimental warming treatments to examine effects of warming on its vegetative and reproductive growth. Two types of open top chambers (OTCs), large and small, were used to generate lower and higher warming levels.</p> <p>The dataset consists of the vegetative and reproductive characters of <i>P. viviparaum</i> in control plots, large OTCs and small OTCs. The characters include plant height, leaf number, length of the longest leaf, flower diameter, bulbil length, number of flowers per spike, number of bulbils per spike, flower proportion, dry weight of stem and leaves, dry weight of flowers per spike, dry weight of bulbils per spike, reproductive allocation and bulbil germination rate.</p> <p>Main results of the experiment are that (1) the increased temperature promoted both vegetative and reproductive growth of <em>P. viviparaum</em>, but there was a significant trade-off between them. Decreased reproductive allocation under warming suggested that more available resources were devoted to vegetative growth, resulting in increased plant height, leaf number and length of the longest leaf; (2) After warming, the number and dry weight of flowers per spike decreased while the number and dry weight of bulbils per spike increased, indicating more investment to asexual reproduction over sexual reproduction in <em>P. viviparaum</em>; (3) The increase of warming further strengthened the above variation trends of vegetative and reproductive growth of <em>P. viviparaum</em>.</p>
FIGURE 42 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURE 42. Ordination plots representing the first two axes of the Canonical Variates Analysis (CVA) performed on the normalized coordinates of the morphological landmarks digitized on LM images of Hippodonta qinghainensis and other species of Hippodonta.
FIGURES 38–40 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURES 38–40. Boxplots showing quantile distributions of valves characters for Hippodonta qinghainensis 38. Valve length. 39. Valve width. 40. Stria density (= number of striae in 10 µm). The 25–75 percent quartiles (excluding outliers) are drawn using a box. The median is shown with a horizontal line inside the box. The whiskers represent the upper and lower "inner fence", i.e. are drawn from the edge of the box up to the largest/lowest data point less than 1.5 times the box height. Outliers, i.e. values outside the inner fences, are shown as circles if they lie further from the edge of the box than 3 times the box height.
FIGURES 34–37 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURES 34–37. SEM images of Hippodonta qinghainensis. Figs 34, 35. Internal view of entire valves of different size. Striae composed of simple lineolae, positioned in quite shallow and narrow depressions; interstriae strongly pronounced. Some lineolae are still covered by volae. Raphe-sternum thickened towards central raphe endings. Fig. 36. Internal view, detail of apex. Linear raphe slit distally terminated by crescent-shaped helictoglossa, positioned just below terminal area. Fig. 37. Internal, oblique view showing two rows of lineolae around the valve apex. Scale bars in Fig. 34 = 3 µm; Fig. 35, 37 = 2 µm; Fig. 36 = 1 µm.
FIGURES 28–33 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURES 28–33. SEM images of Hippodonta qinghainensis. Fig. 28. External view of entire valve. Striae composed of simple lineolae throughout. Figs 29, 31. Close-up of apices. Terminal pores of raphe are weakly deflected towards one valve side. Two rows of apical areolae at the valve apices. Fig. 30. Close-up of central area. External central raphe endings weakly developed, teardrop-shaped depressions. Fig. 32. External view of complete frustules showing broad, unornamented girdle. Fig. 33. Detail of one apex in girdle view, showing two rows of apical areolae. Scale bars in Figs 28, 32, 33 = 2 µm; Figs 29, 30, 31 = 1 µm.
FIGURE 2 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURE 2. Positions of the 20 landmarks, with fixed landmarks represented by filled circles and sliding landmarks represented by empty circles. Average valve shapes (= consensus) of the newly described species, Hippodonta qinghainensis, and of the other Hippodonta species compared in the text.
FIGURE 41 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURE 41. Classification tree model, fitted using binary recursive partitioning, that shows splits used to separate the six species of Hippodonta on the basis of the three conventional variables: valve length, valve width and stria density.
Figure 2 in The phylogenetic position of Thermophis (Serpentes: Colubridae), an endemic snake from the Qinghai-Xizang Plateau, China
Figure 2. Bayesian inference tree of the combined data. The values on the branches indicate posterior probability support/bootstrap support. The bolder branch represents the genus Thermophis. The letters refer to the current taxonomic assignment of the designated taxa. C, Colubrinae; CA, Calamariinae; N, Natricinae; PX, Pseudoxenodontinae; X, Xenodontinae.
Figure 1 in The phylogenetic position of Thermophis (Serpentes: Colubridae), an endemic snake from the Qinghai-Xizang Plateau, China
Figure 1. Sampling sites for Thermophis bayleyi (filled circles) and Thermophis zhaoermii (open circle).
FIGURES 16–20 in Pinnularia qinghainensis: a new diatom species (Bacillariophyta) found in the brackish Lake Qinghai, China
FIGURES 16–20. Pinnularia qinghainensis sp. nov., SEM external view. 16. Complete valve. 17. Detail of centre in Fig. 16, note hexagonal central area and slightly bent central raphe ends. 18, 19. Detail of pole in Fig. 16 showing curved distal raphe fissures and striae composed of 4 rows of small areolae. 20. Detail of striae showing small areolae occluded by silica plates. Scale bar = 10 μm (Fig. 16), 1 μm (Figs 17–20).
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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