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622 results for “High altitude”
Data from: Repeated evolution of reduced visual investment at the onset of ecological speciation in high-altitude <em>Heliconius</em> butterflies
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Dataset for: Molecular diversity of dragonflies in high altitude Andean lakes through DNA barcoding
<p>Genetic and morphological identification of dragonflies' larvae species in three high elevation Andean tropical lakes was done using DNA barcoding of the cytochrome oxidase 1 gene (COI). Phylogeny allowed inferring the evolutionary relationships of at least 5 species (from 74 samples) that belong to two different families within the Odonata order.</p>
Figure 8 in A new species of Gammarus Fabricius, 1775 (Crustacea: Amphipoda: Gammaridae) from extreme high-altitude Lake Tong Tso, Qinghai-Tibetan Plateau
Figure 8. Gammarus pontual sp. nov., male paratype (MZUSP 40977): (A-C) Pleopods 1-3, dorsal view, respectively. Scale bars: 1.0 mm.
Figure 7 in A new species of Gammarus Fabricius, 1775 (Crustacea: Amphipoda: Gammaridae) from extreme high-altitude Lake Tong Tso, Qinghai-Tibetan Plateau
Figure 7. Gammarus pontual sp. nov., male holotype (MZUSP 40976): (A-C) Epimeral plates 1-3, lateral view, respectively. Male paratype (MZUSP 40977): (D-F) Uropods 1-3, lateral view, respectively; (G) Telson, dorsal view. Scale bars: 0.5 mm for G; 2.0 mm for A-C; 1.0 mm for the remaining.
Figure 4 in A new species of Gammarus Fabricius, 1775 (Crustacea: Amphipoda: Gammaridae) from extreme high-altitude Lake Tong Tso, Qinghai-Tibetan Plateau
Figure 4. Gammarus pontual sp. nov., male paratype (MZUSP 40977): (A) Right gnathopod 1, lateral view; (B) Left gnathopod 1, mesial view. Scale bars: 1.0 mm.
Figure 1 in A new species of Gammarus Fabricius, 1775 (Crustacea: Amphipoda: Gammaridae) from extreme high-altitude Lake Tong Tso, Qinghai-Tibetan Plateau
Figure 1. Gammarus pontual sp. nov., male holotype (MZUSP 40976): (A) Habitus, lateral view; (B-D) Urosomites 1-3, dorsal view, respectively. Scale bars: 10.0 mm for A; 2.0 mm for B-D.
Figure 3 in A new species of Gammarus Fabricius, 1775 (Crustacea: Amphipoda: Gammaridae) from extreme high-altitude Lake Tong Tso, Qinghai-Tibetan Plateau
Figure 3. Gammarus pontual sp. nov., male paratype (MZUSP 40977): (A) Left maxilla 1, dorsal view; (B) Detail of the right palp of maxilla 1, dorsal view; (C) Left maxilla 2, dorsal view; (D) Left maxilliped, dorsal view. Scale bars: 0.1 mm for B; 1.0 mm for D; 0.5 mm for the remaining.
Figure 2 in A new species of Gammarus Fabricius, 1775 (Crustacea: Amphipoda: Gammaridae) from extreme high-altitude Lake Tong Tso, Qinghai-Tibetan Plateau
Figure 2. Gammarus pontual sp. nov., male paratype (MZUSP 40977): (A) Head, lateral view; (B) Right antenna 1, lateral view; (C) Right antenna 2, lateral view; (D) Upper lip, dorsal view; (E) Lower lip, dorsal view; (F) Left mandible, mesial view; (G) Right mandible, mesial view. Scale bars: 1.0 mm.
Figure 6 in A new species of Gammarus Fabricius, 1775 (Crustacea: Amphipoda: Gammaridae) from extreme high-altitude Lake Tong Tso, Qinghai-Tibetan Plateau
Figure 6. Gammarus pontual sp. nov., male paratype (MZUSP 40977): (A) Right pereopod 3, lateral view; (B) Right pereopod 4, lateral view; (C) Right pereopod 5, lateral view; (D) Right pereopod 6, lateral view; (E) Right pereopod 7, lateral view. Scale bars: 1.0 mm.
Figure 5 in A new species of Gammarus Fabricius, 1775 (Crustacea: Amphipoda: Gammaridae) from extreme high-altitude Lake Tong Tso, Qinghai-Tibetan Plateau
Figure 5. Gammarus pontual sp. nov., male paratype (MZUSP 40977): (A) Right gnathopod 2, lateral view; (B) Left gnathopod 2, mesial view. Scale bars: 1.0 mm.
FIGURE 5 in Anticyphon gen. nov., a new genus of Scirtidae (Coleoptera: Scirtoidea) inhabiting high altitude Andean cloud forests and páramo formation
FIGURE 5. Anticyphon oyonensis sp. nov., abdomen. A) male, B) female.
FIGURE 28 in Leaf-mining Nepticulidae (Lepidoptera) from record high altitudes: documenting an entire new fauna in the Andean páramo and puna
FIGURE 28. Details of adult morphology of high-Andean Stigmella, Nepticulidae.
FIGURE 27 in Leaf-mining Nepticulidae (Lepidoptera) from record high altitudes: documenting an entire new fauna in the Andean páramo and puna
FIGURE 27. Distribution map of the high-Andean Nepticulidae with height records.
Data from: Influences of ski-runs, meadow management and climate on the occupancy of reptiles and amphibians in a high-altitude environment of Italy
<p>Alpine ecosystems harbour a rich and highly-specialized biodiversity which is particularly susceptible to anthropogenic disturbances such as habitat loss and fragmentation as well as to climate change. Combined with other forms of land-use conversion, construction and maintenance of ski resorts can have severe consequences on alpine biodiversity. In this study, we show how one amphibian and two reptile species, namely <em>Rana </em><em>temporaria</em>, <em>Zootoca</em><em> vivipara</em> and <em>Vipera</em><em> </em><em>berus</em>, respond to such impacts by means of a multi-season occupancy analysis. We found all three species both in and outside ski-runs, showing that these habitats do not necessarily preclude their occurrence. Contrarily, this is influenced more by microhabitat availability, such as ground vegetation, humid areas, and rock cover, rather than by macro-characteristics like elevation or habitat type. Moreover, we found a climatic influence on the year-to-year occupancy change of the species, with activity-months conditions being more relevant than overwintering ones. Our results demonstrate how, in the specific case of reptiles and amphibians, ski resorts do not necessarily limit species' occurrence and that a mild series of management actions might secure the species' persistence in the area.</p>
Data from: Admixture facilitates genetic adaptations to high altitude in Tibet
<p>Genotype data for the 69 high altitude Sherpa individuals from</p> <p> </p> <p>Jeong C, Alkorta-Aranburu G, Basnyat B, Neupane M, Witonsky DB, Pritchard JK, Beall CM, Di Rienzo A. Admixture facilitates genetic adaptations to high altitude in Tibet. Nat Commun. 2014;5:3281. doi: 10.1038/ncomms4281. PMID: 24513612; PMCID: PMC4643256.</p> <p> </p> <p>Files are in PLINK binary format.</p>
Changes in ventilatory responses at high altitude measured using rebreathing
<p>Ventilatory responses to hypoxia and hypercapnia play a vital role in maintaining gas exchange homeostasis, and in adaptation to high-altitude environments. This study investigates the mechanisms underlying sensitization of hypoxic and hypercapnic ventilatory responses (HVR and HCVR, respectively) in individuals acclimatized to moderate high altitude (3800 m). Thirty-one participants underwent chemoreflex testing using the Duffin modified rebreathing technique. Measures were taken at sea level and after 2 days of acclimatization to high altitude. Ventilatory recruitment thresholds (VRT), HCVR-Hyperoxia, HCVR-Hypoxia, and HVR were quantified. Acclimatization to high altitude resulted in increased HVR (p<0.001) and HCVR-Hyperoxia (p<0.001), as expected. We also observed that the decrease in VRT under hypoxic test conditions significantly contributed to the elevated HVR at high altitude since the change in VRT across hyperoxic and hypoxic test conditions was greater at high altitude compared to baseline sea level tests (p=0.043). Pre-VRT, or basal, ventilation also increased at high altitude (p<0.001), but the change did not differ between oxygen conditions. Taken together, this data suggests that the increase in HVR at high altitude is at least partially driven by a larger decrease in the VRT in hypoxia versus hyperoxia at high altitude compared to sea level. This study highlights the intricacies of respiratory adaptations during acclimatization to moderate high altitude, shedding light on the roles of the VRT, baseline respiratory drive, and two-slope HCVR in this process. These findings contribute to our understanding of how the human respiratory control responds to hypoxic and hypercapnic challenges at high altitude.</p>
Fig 8 in First report of the high altitude cladoceran species Streblocerus serricaudatus (Fischer, 1849) S.LAT from the Western Ghats of India, Tamil Nadu
Fig 8: Antennule with 3 spines at the tip.
Fig 1 in First report of the high altitude cladoceran species Streblocerus serricaudatus (Fischer, 1849) S.LAT from the Western Ghats of India, Tamil Nadu
Fig 1: Posterior part of the body of Streblocerrus serricaudatus showing protuberances.
Fig 5 in First report of the high altitude cladoceran species Streblocerus serricaudatus (Fischer, 1849) S.LAT from the Western Ghats of India, Tamil Nadu
Fig 5: Carapace. Fig 6: Bilobed Post abdomen.
Fig 2 in First report of the high altitude cladoceran species Streblocerus serricaudatus (Fischer, 1849) S.LAT from the Western Ghats of India, Tamil Nadu
Fig 2: Kanyakumari district map showing Pechiparai dam
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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.