Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
116
datasets available to search
ShareScore release 0.9.0
Dataset results
116 results for “sand dune”
FIGURE 6 in Phylogeography of the endangered sand dune whiptail lizard Glaucomastix abaetensis (Dias, Rocha & Vrcibradic, 2002) with the description of a new species
FIGURE 6. Glaucomastix itabaianensis sp. nov. (holotype; female; SVL = 60.0 mm; MZUSP 104255; PARNASI, Areia Branca municipality, Sergipe State, Brazil) in A) dorsal, B) ventral, and C) lateral view of head.
FIGURE 5 in Phylogeography of the endangered sand dune whiptail lizard Glaucomastix abaetensis (Dias, Rocha & Vrcibradic, 2002) with the description of a new species
FIGURE 5. Glaucomastix itabaianensis sp. nov. (holotype; female; SVL = 60.0 mm; MZUSP 104255; PARNASI, Areia Branca municipality, Sergipe State, Brazil) in dorsal view (color in preservative).
FIGURE 3 in Phylogeography of the endangered sand dune whiptail lizard Glaucomastix abaetensis (Dias, Rocha & Vrcibradic, 2002) with the description of a new species
FIGURE 3. Mismatch distribution, Fu's Fs, and Tajima's D neutrality tests, and the sums of squared deviations (SSD) for each major lineage. The expected frequency for mismatch distribution is based on a population growth-decline model determined using DnaSP 5.10.01 (Librado & Rozas 2009). The x axis shows the number of pairwise differences, the y axis shows the frequency of the pairwise comparisons. The observed frequency is represented by a continuous black line, whereas the dashed gray lines represent the expected frequency.
FIGURE 2. a in Phylogeography of the endangered sand dune whiptail lizard Glaucomastix abaetensis (Dias, Rocha & Vrcibradic, 2002) with the description of a new species
FIGURE 2. a) Bayesian phylogenetic tree inferred from combined mtDNA and nDNA (50% majority-rule consensus) for Glaucomastix abaetensis, and Bayesian species delimitation results assuming a fully resolved, three-species guide tree (bold red lines). The marginal probabilities for speciation are displayed at each node for each combination of priors for θ and τ: LD, θ = G (1, 10) and τ0 = G (1, 10); SS, θ = G (2, 2000) and τ0 = G (2, 2000); LS, θ = G (1, 10) and τ0 = G (2, 2000). Results from both rjMCMC algorithm 0 and 1 are displayed. There was high speciation probability (> 0.95) for southern and northern clades node under all combinations of priors and rjMCMC algorithm, providing robust support for recognition of two species. b) Phylogenetic reconstruction for Glaucomastix including southern lineage (G. abaetensis; MZUSP 104240) and northern lineage (G. itabaianensis sp. nov. holotype; MZUSP 104255) as a new species under BSD approach (bold red line). Colored dots represents samples for different localities as shown in the legend (lower-left corner). Colored squares on nodes correspond to Bayesian posterior probabilities values according to color gradient (see the legend; values <70% were suppressed). The best-fit model of evolution seletected for our data was GTR + G for 16S, cyt b and ND4, F81 for BDNF, and HKY+G for NT3. Kentropyx altamazonica was used as outgroup.
FIGURE 1. a in Phylogeography of the endangered sand dune whiptail lizard Glaucomastix abaetensis (Dias, Rocha & Vrcibradic, 2002) with the description of a new species
FIGURE 1. a) map of northeast Brazil showing the localities used in molecular (colored dots) and morphological analysis (colored dots and black diamonds). Light blue lines are rivers, dashed gray lines are state boundaries, the green patch is the Atlantic Rain Forest and the yellow patch is the semiarid Caatinga. b) and c) reduced median network for southern and northern lineages based on b) 1702 bp concatenated mtDNA and c) 1331 bp concatenated nDNA. Each haplotype is represented by a circle and the area of the circle is proportional to its frequency. Samples from different localities are mentioned in different colors as well as same colors/localities relationship is replicated along this paper, Abaeté (dark blue), Guarajuba (green), Costa do Sauípe (brown), Costa Azul (purple), Reserva do Caju (red), Pirambu (light blue), and Parque Nacional da Serra de Itabaiana (PARNASI; yellow). The length of each branch is proportional to the number of mutational steps on the respective branch ("one" was suppressed). The # indicates that the line has been broken to the convenient arrangement of the each nodes.
FIGURE 2A–H. Glomus rugosae. A in Glomus rugosae, a new arbuscular mycorrhizal species in Glomeraceae (phylum Glomeromycota) from maritime sand dunes of Poland and an ash pond of Czech Republic
FIGURE 2A–H. Glomus rugosae. A. Cluster with sporogenous hyphae (h), spores (sp), and a spore subtending hypha (sh). B–F. Spore wall layers (swl) 1–4. F, G. Subtending hyphal wall layers (shwl) 1–4 continuous with spore wall layers (swl) 1–4. H. Arbuscule (a), intraradical hyphae (ih), and vesicle (v) in Plantago lanceolata root stained in 0.1% Trypan blue. A, B, G, H. Spores and mycorrhizal structures in PVLG. C–F. Spores in PVLG+Melzer's reagent. A–H. Differential interference microscopy. Scale bars: A = 20 μm, B–H = 10 μm.
Figure 1 in Herpetofauna Of The Quaternary Sand Dunes Of The Middle Rio São Francisco: Bahia: Brazil. Vii. Typhlops Amoipira Sp. Nov., A Possible Relative Of Typhlops Yonenagae (Serpentes, Typhlopidae)
Figure 1. Typhlops amoipira, sp. nov.: lateral, ventral, and dorsal views of head (MZUSP 12298, holotype)
FIGURE 2 in Scaevola rialagartensis (Goodeniaceae), a new species from coastal sand dunes of Rio Lagartos, Yucatan, Mexico
FIGURE 2. Illustration of Scaevola rialagartensis. a, portion of the habit; b, branch with flowers and fruits; c, detail of the leaf; d, portion of the inflorescence; e, flower with stigma details; f, stamen, g, portion of the infrutescence; h, fruit, longitudinal section; i, seed covered with the aril; j, seeds. Illustration by Edmundo Saavedra based on the holotype specimen G. Castillo-Campos & J.J. Pale P. 29321.
FIGURE 3 in Scaevola rialagartensis (Goodeniaceae), a new species from coastal sand dunes of Rio Lagartos, Yucatan, Mexico
FIGURE 3. Scaevola rialagartensis Cast.-Campos sp. nov. in its habitat. a) shrub lying on the sand dune and parasitized by Cassytha filiformis L.; b) branch with inflorescences, flowers in anthesis, and revolute leaves. (Photos G. Castillo-Campos).
FIGURE 3. Salacia frutiplatensis a in Salacia frutiplatensis (Celastraceae, Salacioideae), a new species of the coastal sand dunes of Los Tuxtlas, Veracruz, Mexico
FIGURE 3. Salacia frutiplatensis a) mature fruits; b) branch with immature fruit; c) immature fruit on tree branch; d) cross-sectional view of a fruit with seeds coated with mucilaginous aril; e) fruit shell without seeds; f) seeds without mucilaginous aril. (Photographs by G. Castillo-Campos).
FIGURE 2 in Salacia frutiplatensis (Celastraceae, Salacioideae), a new species of the coastal sand dunes of Los Tuxtlas, Veracruz, Mexico
FIGURE 2. Illustration of Salacia frutiplatensis. a, branch with fruit; b, c, leaves; d, petiole; e, f, flowers; g, infructescence; h, i, fruit, cross-section; j, k, l, seeds with and without aril; m, seed, cross-section. Illustration by Edmundo Saavedra based on the holotype specimen G. Castillo-Campos & O. Palacios W. 29785 and G. CastilloCampos & M. Escamilla 29844.
FIGURE 1 in Salacia frutiplatensis (Celastraceae, Salacioideae), a new species of the coastal sand dunes of Los Tuxtlas, Veracruz, Mexico
FIGURE 1. Location map of Salacia frutiplatensis Cast.-Campos, sp. nov. on the coast of the Gulf of Mexico.
Contributions of the Lake-Dune Pattern to the Heights of the Tallest Dunes in the Badain Jaran Sand Sea, Northern China
<p>Contributions of the Lake-Dune Pattern to the Heights of the Tallest Dunes in the Badain Jaran Sand Sea, Northern China</p>
Fig. 1 in Dung Beetles (Coleoptera: Scarabaeidae) Trapped by a Moving Sand Dune Near Olduvai Gorge, Tanzania
Fig. 1. Scarabaeini carcasses on the surface (back region) of the barchan dune near Olduvai. Arrows exemplarily indicate the positions of individual carcasses.
FIGURE 4 in Scutellospora deformata (Scutellosporaceae), a new species of Gigasporales from the Mediterranean sand dunes of Spain
FIGURE 4. Spores of Scutellosora deformata. a. Scutellosporoid and irregular spores (glsp and isp, respectively). b–h. Outer wall with three layers (OWL1-3); middle and inner wall with three layers each (MWL1-2; IWL1-2). a, d–e. Sporogenous cell (spc) and sporogenous wall layers (SpWL1-3). h–i. Germination shield (gsh); several lobes (lo) that are separated by folds (f) and germinal pore (gp). c. IWL2 and IWL3 totally stained by PVLG + Melzer's reagent (1:1) 6 years later after mounting. g. Outer (OWL2) and inner wall (IWL1-2) stained (partially and totally, respectively) few days after mounting. Scale bars: a= 200 μm, b–f, h= 20 μm, g, i = 50 μm. Photos by: Alberto Guillen.
FIGURE 3 in Scutellospora deformata (Scutellosporaceae), a new species of Gigasporales from the Mediterranean sand dunes of Spain
FIGURE 3. Maximum likelihood (ML) phylogenetic tree on the small subunit, internal transcribed spacer (SSU-ITS1-5.8S) rDNA sequences of S. deformata and 10 known species of AMF, including Pacispora scintillians as outgroup. Here we show the tree based on Tamura & Nei (1993) the topology of which is in accordance with that obtained using the other ML methods. *Species being described. **Species that are generic types. Bootstrap values are given for each branch. The scale bar indicates the number of substitutions per site. Phylogenetic trees were viewed and edited using MEGA 7.
FIGURE 1. Study sites. A in Scutellospora deformata (Scutellosporaceae), a new species of Gigasporales from the Mediterranean sand dunes of Spain
FIGURE 1. Study sites. A. La Garrofera, B. El Perelló, C. Les Palmeres, D. El Dosser, E. Sant Antoni, F. Burguera.
FIGURE 2 in Scutellospora deformata (Scutellosporaceae), a new species of Gigasporales from the Mediterranean sand dunes of Spain
FIGURE 2. Maximum Likelihood (ML) phylogenetic tree on large subunit (LSU) rDNA sequences of S. deformata and 12 known species of AMF, including Pacispora scintillians as outgroup. Here we show the tree based on Tamura & Nei (1993) the topology of which is in accordance with that obtained using the other ML methods. *Species being described. **Species that are generic types. Bootstrap values are given for each branch. The scale bar indicates the number of substitutions per site. Phylogenetic trees were viewed and edited using MEGA 7.
FIGURE 3 in New record of the rare genus Crinalium Crow (Oscillatoriales, Cyanobacteria) from sand dunes of the Baltic Sea, Germany: epitypification and emendation of Crinalium magnum Fritsch et John based on an integrative approach
FIGURE 3. Light micrographs showing an overview of living filaments of Crinalium magnum strain Hg-6-6. A, B. Irregular clusters with trichomes varying in length. C–E. Trichomes lying in two planes. F, G. Details of trichomes and terminal cells with a thickened outer margin. H–K. Fragmentation of trichomes in old cultures (6 and more months). Arrows mark the sheath. Scale bars: 10 µm
FIGURE 5 in New record of the rare genus Crinalium Crow (Oscillatoriales, Cyanobacteria) from sand dunes of the Baltic Sea, Germany: epitypification and emendation of Crinalium magnum Fritsch et John based on an integrative approach
FIGURE 5. Ultrastructure of C. magnum strain Hg-6-6. A. Longitudinal section of the trichome showing its general organization. B, D–F. Portions of filaments showing typical arrangement of helically twisted, swirl-like thylakoids and cell inclusions. C. Junctional pores (arrows) closely associated with the cross walls. Cx, carboxysomes; Cy, cyanophycin granules. Scale bars: 1 µm
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.