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4,462 results for “South America”
FIG. 2 in Novelties on Tortella (Pottiaceae, Bryophyta) from South America
FIG. 2.— Tortella fruchartii (Müll. Hal.) R. H. Zander sporophyte and spores micrographs: A, Capsule showing apicule covered by the calyptra; B, Capsule irregularly ruptured; C, Spores; D, Spore detail in distal view; E, Spore detail in proximal view (A, D, E made with SEM and B, C with LM). Scale bars: A, B, 0.5 mm; C, 10 µm; D, E, 5 µm (all from Suárez 1047, CTES).
FIG. 4 in Novelties on Tortella (Pottiaceae, Bryophyta) from South America
FIG. 4.— Tortella lilliputana (Müll. Hal. ex G. Roth) R. H. Zander gametophyte micrographs: A, Vegetative leaf; B, C, Laminal cells at the middle of the leaf; D, Stem cross section; E, Leaf cross section at the middle part (A, B, D, E made with LM and C with SEM). Scale bars: A, 0.5 mm; B-E, 50 µm (all from Suárez 1488, CTES).
FIG. 1. — Anthoceros tristanianus J.C.Villarreal, J.J in Anthoceros tristanianus J.C.Villarreal, J.J.Engel & Váňa in Váňa & Engel (Anthocerotaceae, Anthocerotophyta) a new record for South America from the Colombian bryophyte flora
FIG. 1. — Anthoceros tristanianus J.C.Villarreal, J.J.Engel & Váňa in Váňa & Engel: A, Involucre; B, Antheridial chamber; C, Stoma on capsule wall; D, Spore, proximal surface; E, Spore, distal surface; F, Global distribution, Red circles indicate where the species has been reported. Scales bars: A, 1 mm; B, 35 μm; C, 40 μm; D, E, 10 μm.
Figure 3 Tanytydeus nothofagi n in First record of the genus Tanytydeus (Acari: Paratydeidae) from South America with description of a new species from the Patagonian forests of Argentina
Figure 3 Tanytydeus nothofagi n.sp., female. A – legs; B – gnathosoma in dorsal view; C – subcapitulum.
Figure 1 Tanytydeus nothofagi n in First record of the genus Tanytydeus (Acari: Paratydeidae) from South America with description of a new species from the Patagonian forests of Argentina
Figure 1 Tanytydeus nothofagi n.sp., female. A – micrograph of dorsum; B – Phase contrast micrograph of leg II (ES: eyespot, ω,φ,σ: solenidia and ε: spiniform famulus).
Figure 6 Tanytydeus nothofagi n in First record of the genus Tanytydeus (Acari: Paratydeidae) from South America with description of a new species from the Patagonian forests of Argentina
Figure 6 Tanytydeus nothofagi n.sp., male. A – genital area; B – subcapitulum; C – dorsal gnathosoma.
Fig. 4 in Psammophaga fuegia sp. nov., a New Monothalamid Foraminifera from the Beagle Channel, South America
Fig. 4. ML-tree of the genus Psammophaga, with Vellaria zucchellii as outgroup. Bootstrap values bigger than 80% are shown. Described species are highlighted in grey.
Fig. 1 in Psammophaga fuegia sp. nov., a New Monothalamid Foraminifera from the Beagle Channel, South America
Fig. 1. Map of the Beagle Channel area. The sampling sites are indicated by black dots and their correspondent numbers are shown in groups. Psammophaga fuegia was recovered by microscopy and/or environmental sequencing at fifteen sites that are highlighted by grey arrows. Specimens found in Ushuaia were sampled during a previous expedition.
Fig. 5 in Psammophaga fuegia sp. nov., a New Monothalamid Foraminifera from the Beagle Channel, South America
Fig. 5. SEM images of mineral grains found within Psammophaga fuegia specimens from sites 17 (1 and 2) and 56 (3 and 4). Images 1c, 2c, 3b, 3d, and 4b are in BSE mode highlighting density differences. All remaining images are in SE mode. Note different scales of vari- ous images and insets on images of larger scale showing the position of images in smaller scale. Mineral grains analysed for their chemical composition are marked as follows: a – amphibole, c – cordierite, h – hematite, i – ilmenite, f – ferrigehlenite, p – pyroxene, q – quartz, t – titanite, tm – titanoferous magnetite, and z – zircon.
FIGURE 3 in Re-examining the hypothesis of allopatric distribution of Myoprocta acouchy and M. pratti (Mammalia: Dasyproctidae) in South America
FIGURE 3: Geographic range of Myoprocta in Colombia and adjacent countries. Filled circles indicate localities of Red acouchi M. acouchy (Voss et al., 2001). Open circles indicate reddish acouchies from Colombia. Filled squares represent Green acouchies from Ecuador and Peru. Empty squares represent records of greenish acouchies from Colombia. Star represents the type locality of Green acouchi M. pratti (Río Marañón, Pongo de Rentema). Dotted oval indicates area of sympatry between reddish acouchies and greenish acouchies. Locality 26 (Meta, Los Micos, Colombia) is the westernmost known of reddish acouchies. The localities are presented in Appendix 2.
FIGURE 2 in Re-examining the hypothesis of allopatric distribution of Myoprocta acouchy and M. pratti (Mammalia: Dasyproctidae) in South America
FIGURE 2: Ventral and dorsal view of the skins of Myoprocta from Colombia, showing the differential color patterns. a: greenish acouchi (ICN 211); b: greenish acouchi (ICN 212); c: reddish acouchi (IAvH 2542); d: reddish acouchi (IAvH 1856).
FIGURE 1 in Re-examining the hypothesis of allopatric distribution of Myoprocta acouchy and M. pratti (Mammalia: Dasyproctidae) in South America
FIGURE 1: Ventral view of the skull of greenish acouchi M. cf. pratti (ICN 775) (top) and reddish acouchi M. cf. acouchy (ICN 1678) (bottom) from Colombia, showing the difference in the shape of sphenopalatine vacuities. Scale bar: 20 mm.
Fig. 2 in Invasion of the Indo-Pacific blenny Omobranchus punctatus (Perciformes: Blenniidae) on the Atlantic Coast of Central and South America
Fig. 2. Distribution of Omobranchus punctatus in Central and South American coasts. a) Full circle represents new records and open circle represents records from literature; b) Catch sites of Omobranchus punctatus in the eastern coast of Venezuela (Gulf of Paria) and Trinidad (see Table 1); c) Localities with records of Omobranchus punctatus in western Venezuela (Gulf of Venezuela) and Colombia (Guajira Peninsula) (see Table 1) and d) Localities with records of Omobranchus punctatus from Maranhão and Pará states, northern Brazil (see Table 1).
Fig. 8 in Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals
Fig. 8. Geometric Morphometric Analysis applied to O. hatcheri individuals. Left: plot of DF3 vs. DF2 showing means and 95% confidence intervals by sampling sites (locality labels as in Fig. 1) NIHL (white triangle), CDP (black circle), 7: PELE (gray square), PDA (black triangle), MITO (black diamond), CARI (white square), EPU (black and white diamond), RIV (gray circle), ROS (white diamond), AME (black square), CHU (gray diamond), MUS (gray triangle), LBA (white circle), and PUY (white triangle). Right: deformation grids correspond to a relative warps analysis involving only CDP, PDA, and NIHL and PUY. Arrowheads indicate displacement of landmarks relative to consensus. Shaded area remarks relative position of landmarks 5 (anterior insertion of the first dorsal fin) and 12 (distal tip of the pelvic fin onto fish body).
Fig. 6 in Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals
Fig. 6. Probability for taxonomically identified Odontesthes hatcheri individuals of being O. hatcheri (left) and probability of taxonomically identified O. bonariensis individuals of being O. bonariensis (right). Number of fish, median, quartiles, and data outside 10 and 90th percentile are indicated. Water bodies are named as in Fig. 1.
Fig. 5 in Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals
Fig. 5. Morphometric differences between species. DF1 and residual DF2 (of the regression of DF2 versus Standard length) vs. Standard length (SL). Odontesthes bonariensis (white circle), O. hatcheri (black circle), and presumptive hybrids (gray circle).
Fig. 4 in Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals
Fig. 4. Geometric Morphometric Analysis applied to Odontesthes individuals. RW2 versus RW1 and deformation grids (tied to group means) for Odontesthes bonariensis (white circle), O. hatcheri (black circle) and presumptive hybrids (gray circle). Arrowheads indicate displacement of landmarks relative to consensus. Shaded area shows relative position of landmarks 5 (anterior insertion of the first dorsal fin) and 12 (distal tip of the pelvic fin onto fish body).
Fig. 1 in Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals
Fig. 1. Distribution of O. hatcheri (light gray) and O. bonariensis (dark gray) described by Dyer (2006) and sampling localities: ULLM, Ullum Reservoir; CARZ, Carrizal Reservoir; NIHL, Nihuil Reservoir; D, Lake San Lorenzo; URRE, Lake Urre Lauquen; CDP, Casa de Piedra Reservoir; PELE, Lake Pellegrini; PDA, Piedra del Aguila Reservoir; MITO, Lake Morenito; CARI, Lake Carilafquen; EPU, Lake Epuyén; RIV, Lake Rivadavia; ROS, Lake Rosario; AME, Florentino Ameghino Reservoir; CHU, Chubut River at Los Altares; MUS, Lake Musters; LBA, Lake Buenos Aires; PUY, Lake Pueyrredón. White triangles show the location of the three hatcheries (Estación Hidrobiológica de Chascomús 35º36'S, 58º01'W, Estación de Piscicultura de Embalse 32º13'S, 64º29'W, and Estación de Piscicultura Río Limay 38º59'S, 68º14'W), sources of stocking practices.
Figure 1. Study area. A. South America and Brazil. B in Far from urban areas: plastic uptake in fish populations of subtropical headwater streams
Figure 1. Study area. A. South America and Brazil. B. Brazil and the state of Rio Grande do Sul. C. Rio Grande do Sul and the Sinos River Basin. D. The numbers from 1 to 7 in the white dots show the sampling sites in the upper section of the Sinos River basin. The colour gradient represents the terrain elevation (light green elevations of 30m altitude and dark brown elevations of 980m). The red polygons are the urban areas.
Climate model and proxy input data for PaleoDA South America reconstruction
<p>This repository contains input data needed to run the paleoclimate reconstruction code for "A continental reconstruction of hydroclimatic variability in South America during the past 2000 years", submitted to Climate of the Past in February 2024 [https://egusphere.copernicus.org/preprints/2024/egusphere-2024-545/]. The Github repository is located here: https://github.com/mchoblet/paleoda_sa/tree/main</p> <p><strong>Structure:</strong></p> <p>model_data: One File for each Model (GISS, CCSM (isoGSM), CESM, ECHAM5, iHADCM3) and variable (prec,tsurf,d18O, SPEI). Monthly resolution.</p> <p>proxy_data: One File for each proxy record type (Trees and corals contain a separate file for annual and djf linear regression parameters, the proxy data as such is the same). The data has yearly resolution, and thus also contains NaNs for when a year is not covered by a proxy. Note, that these time series are resampled to a regular resolution in the multi-time scale PaleoDA code.</p> <p><strong>Climate Model Data:</strong></p> <p>The original data can be found in https://zenodo.org/records/6610684. The data in this repository here has been slightly modified and regridded for easier processing by the reconstruction algorithm. When using the data here, please also cite https://zenodo.org/records/6610684 and the publication </p> <p>"Investigating stable oxygen and carbon isotopic variability in speleothem records over the last millennium using multiple isotope-enabled climate models", by </p> <div>Janica C. Bühler, Josefine Axelsson, Franziska A. Lechleitner, Jens Fohlmeister, Allegra N. LeGrande, Madhavan Midhun, Jesper Sjolte, Martin Werner, Kei Yoshimura, and Kira Rehfeld (https://cp.copernicus.org/articles/18/1625/2022/cp-18-1625-2022.html)</div> <p><strong>Climate Proxy Data:</strong></p> <p>A regional proxy record subselection for South America. See References in Appendix A Choblet et al. (https://egusphere.copernicus.org/preprints/2024/egusphere-2024-545/). The DOI of each record is stored as Metadata.</p> <p><strong>How were these files created?</strong></p> <p>The steps are documented in the the Github repository https://github.com/mchoblet/paleoda_sa/tree/main (data_preprocessing). The SPEI drought index has ben computed from modeled precipitation and temperature using Thornthwaite's method (using the Climate Indices package, https://github.com/monocongo/climate_indices).</p> <p><strong>Manuscript revision in July 2024:</strong></p> <ul> <li>Added historical documentary indices time series and the Puyehue lake record. For technical reasons in the PaleoDA algorithm, it is kept apart from the other lake records. The reconstruction code on Github has been updated for including these datasets.</li> </ul> <p> </p> <p> </p> <p> </p> <p> </p> <div> </div>
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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.