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4,669 results for “Environment;”
Reforestation of high elevation pines: Direct seeding success depends on seed source and sowing environment
<p>Forest persistence in regions impacted by increasing water and temperature stress will depend upon species' ability to either rapidly adjust to novel conditions or migrate to track ecological niches. Predicted, rapid climate change is likely to outpace the adaptive and migratory capacity of long-lived isolated tree species, and reforestation may be critical to species' persistence. Facilitating persistence both within and beyond a species' range requires identification of seed lots best adapted to the current and future conditions predicted with rapid climate change. We evaluate variation in emergent seedling performance that leads to differential survival among species and populations for three high-elevation five-needle pines. We paired a fully reciprocal field common garden experiment with a greenhouse common garden study to a) quantify variation in seedling emergence and functional traits, b) ask how functional traits affect performance under different establishment conditions, and c) evaluate whether trait and performance variation demonstrates local adaptation and plasticity. Among study species – limber, Great Basin bristlecone, and whitebark pines – we found divergence in emergence and functional traits, though soil moisture was the strongest driver of seedling emergence and abundance across all species. Generalist limber pine had a clear emergence advantage as well as traits associated with drought adaptation, while edaphic specialist bristlecone pine was characterized by low emergence yet high early survival once established. Despite evidence for edaphic specialization, soil characteristics alone did not explain bristlecone success. Across species, trait-environment relationships provided some evidence for local adaptation in drought-adapted traits, but we found no evidence of local adaptation in emergence or survival at this early life stage. For managers looking to promote persistence, sourcing seed from drier environments is likely to impart greater drought resistance into reforestation efforts through strategies such as greater root investment, increasing the probability of early seedling survival. This research demonstrates, through a rigorous reciprocal transplant experimental design, that it may be possible to select climate- and soil-appropriate seed sources for reforestation. However, planting success will ultimately rely on a suitable establishment environment, requiring careful consideration of interannual climate variability for management interventions in these climate- and disturbance-impacted tree species.</p>
Data from: Dietary restriction fails to extend life in stressful environments
<ol> <li>Moderate dietary restriction often prolongs life in laboratory animals, and this response has been interpreted as an adaptive strategy that promotes survival during famine. However, dietary restriction can also increase frailty, and it therefore remains unclear whether restricted diets prolong life under stressful conditions like those experienced by wild animals. </li> <li>We manipulated adult dietary protein of <em>Drosophila</em> <em>melanogaster</em> across a gradient of ambient temperature and examined effects on survival. To test for trade-offs, we also quantified the reproduction, and performance of F1, F2 and F3 descendants.</li> <li>We found that protein restriction increased longevity of one or both sexes at benign ambient temperatures (25°C, 27°C) but failed to extend longevity of flies maintained in cold (21°C, 23°C) or hot (29°C) conditions. Instead, in females, protein restriction resulted in strongly elevated mortality at cold temperatures. Protein restriction also generally reduced reproductive performance and did not consistently enhance performance of F1, F2 or F3 descendants. </li> <li>Taken together, our results challenge the long-held idea that extended longevity of diet-restricted laboratory animals represents an adaptive survival strategy in natural populations. Our findings suggest instead that this response is an artefact of benign laboratory conditions, and that DR-induced life extension might not be achieved in the more stressful conditions experienced in the wild. </li> </ol>
Figure 10 in Dragonflies and damselflies (Odonata) from Flores Island, Lesser Sunda Archipelago: New occurrences in extreme environments and an island-level checklist of this group
Figure 10. Rhyothemis phyllis ixias from coastal marsh site near Labuan Bajo, Flores Island, Lesser Sunda Archipelago, Indonesia: (A, D) females (RMBH: dried specimens; scale bar = 5 mm); (B, E) tip of abdomen of the females; and (C, F) head of the females (frontal view).
Figure 8 in Dragonflies and damselflies (Odonata) from Flores Island, Lesser Sunda Archipelago: New occurrences in extreme environments and an island-level checklist of this group
Figure 8. Neurothemis terminata from coastal marsh site near Labuan Bajo, Flores Island, Lesser Sunda Archipelago, Indonesia: (A) male, and (C) female (RMBH: dried specimens; scale bar = 5 mm); (B) anal appendages of the male (lateral view); and (D) tip of the female abdomen (lateral view).
Figure 7 in Dragonflies and damselflies (Odonata) from Flores Island, Lesser Sunda Archipelago: New occurrences in extreme environments and an island-level checklist of this group
Figure 7. Neurothemis intermedia excelsa from coastal marsh site near Labuan Bajo, Flores Island, Lesser Sunda Archipelago, Indonesia: (A) female (RMBH: dried specimen; scale bar = 5 mm); and (B) tip of abdomen of the female.
Figure 5 in Dragonflies and damselflies (Odonata) from Flores Island, Lesser Sunda Archipelago: New occurrences in extreme environments and an island-level checklist of this group
Figure 5. Orthetrum sabina from Sano Ngoang Lake, Flores Island, Lesser Sunda Archipelago, Indonesia: (A) male, and (C) female (RMBH: ethanol-preserved specimens; scale bar = 5 mm); (B) anal appendages of the male (lateral view); and (D) tip of the female abdomen (lateral view).
Figure 4 in Dragonflies and damselflies (Odonata) from Flores Island, Lesser Sunda Archipelago: New occurrences in extreme environments and an island-level checklist of this group
Figure 4. Xiphiagrion cyanomelas from Sano Ngoang Lake, Flores Island, Lesser Sunda Archipelago, Indonesia: (A, C) male, and (E) female (RMBH: ethanol-preserved specimens; scale bar = 5 mm); (B, D) anal appendages of the males (dorsal view); and (F) tip of the female abdomen (lateral view).
Figure 3 in Dragonflies and damselflies (Odonata) from Flores Island, Lesser Sunda Archipelago: New occurrences in extreme environments and an island-level checklist of this group
Figure 3. Agriocnemis pygmaea from Sano Ngoang Lake, Flores Island, Lesser Sunda Archipelago, Indonesia: (A) teneral male, and (C) adult female (RMBH: ethanol-preserved specimens; scale bar = 5 mm); (B) anal appendages of the male (dorsal view); and (D) tip of the female abdomen (lateral view).
Figure 2 in Dragonflies and damselflies (Odonata) from Flores Island, Lesser Sunda Archipelago: New occurrences in extreme environments and an island-level checklist of this group
Figure 2. Examples of extreme habitats on Flores and Kanawa islands (Lesser Sunda Archipelago, Indonesia). (A) Sano Ngoang Lake on Flores Island. This highly acidic, slightly brackish lake supports viable populations of Orthetrum sabina, Agriocnemis pygmaea, and Xiphiagrion cyanomelas. (Photo: Wiwin Windari Petersen). (B) Coastal marsh near Labuan Bajo on Flores Island. Habitat of Diplacodes trivialis, Neurothemis intermedia excelsa, N. terminata, Pantala flavescens, and Rhyothemis phyllis ixias. (Photo: Yulia S. Kolosova). (C) Dry grass savanna with Indian jujube (Ziziphus mauritiana) and tamarind (Tamarindus indica) near the foothill on Kanawa Island (waterless during dry season). Site of Pantala flavescens occurrence (vagrant specimen). (Photo: Yulia S. Kolosova).
Figure 6 in Dragonflies and damselflies (Odonata) from Flores Island, Lesser Sunda Archipelago: New occurrences in extreme environments and an island-level checklist of this group
Figure 6. Diplacodes trivialis from coastal marsh site near Labuan Bajo, Flores Island, Lesser Sunda Archipelago, Indonesia: (A, C) females (RMBH: dried specimens; scale bar = 5 mm); and (B, D) tip of abdomen of the females.
Literature on effectiveness of digital learning environments for math in grades 4-10
<p>This table contains metadata on 139 papers which were included in a literature research regarding the effectiveness of digital learning environment for math in grades 4-10. The literature research had three branches: 1) meta-studies on digital learning environments for math in grades 4-10 (13), 2) effectiveness studies regarding popular digital math learning environments (87), and 3) other effectiveness studies for digital learning environments for math in grades 4-10 (identified via a SCOPUS search, 39).</p> <p>The results of each paper are sorted according to their relevance for four core system properties of digital learning environments, namely A) domain modelling/completeness of curriculum coverage, B) user interface/intelligent interaction tools, C) inner loop/micro-adaptivity, that is, strategies to support students in completing single learning tasks, and D) outer loop/macro-adaptivity, that is, strategies to support students in selecting the next learning task. Additionally, we considered E) the integration of the system with in-class teaching.</p> <p>Conflict of interest statement: The study was financed by bettermarks. bettermarks did not influence the text of the publication or the content of this data set.</p> <p>DE: Diese Tabelle enthält Metadaten für 139 wissenschaftliche Artikel, die im Rahmen der Literaturstude "Was wirkt? Eine Literaturstudie zur Wirksamkeit von Systemeigenschaften in Mathematik-Lernumgebungen" (DELFI, 2023) berücksichtigt wurden. Die Studie befasst sich mit der Effektivität von digitalen Mathematik-Lernumgebungen für die Mittelstufe. Die Suche gliederte sich in drei Zweige, nämlich 1) Metastudien über digitale Mathematik-Lernumgebungen in der Mittelstufe (13), 2) Lernwirksamkeitsstudien zu einzelnen, bekannten Lernumgebungen (87), 3) Weitere, einzelne Lernwirksamkeitsstudien zu digitalen Mathematik-Lernumgebungen in der Mittelstufe (über eine SCOPUS-Recherche, 39).</p> <p>Die Ergebnisse der Artikel wurden gegliedert nach vier zentralen Systemeigenschaften digitaler Mathematik-Lernumgebungen, nämlich A) Vollständigkeit der Lerninhalte (bzw. Domänen-Modellierung), B) Intelligente Interaktionswerkzeuge (bzw. user interface), C) Mikro-Adaptivität (bzw. die Unterstützung der Lernenden bei der Bearbeitung einzelner Lernaufgaben) und D) Makro-Adaptivität (bzw. die Unterstützung der Lernenden bei der Auswahl der nächsten Lernaufgabe). Zusätzlich wurde E) die Einbindung im Klassenverbund mit einbezogen.</p> <p>Interessenkonflikt-Angabe: Diese Studie wurde von bettermarks finanziert. Bettermarks hat den Text der Publikation oder den Inhalt dieser Tabelle nicht beeinflusst.</p>
Wrist-worn sensor validation for heart rate variability and electrodermal activity detection in a stressful driving environment
<p>The current dataset contributes to assess the accuracy of the Empatica 4 (E4) wristband for the detection of heart rate variability (HRV) and electrodermal activity (EDA) metrics in stress-inducing conditions and growing-risk driving scenarios. Heart Rate Variability (HRV) and ElectroDermal Activity (EDA) signals were recorded over six experimental conditions (i.e., Baseline, Video Clip, Scream, No Risk Driving, Low-Risk Driving, and High-Risk Driving) and by means of two measurement systems: the E4 device and a gold standard system. The raw quality of the physiological signals was enhanced by means of robust semi-automatic reconstruction algorithms. Heart Rate Variability time-domain parameters showed high accuracy in motion-free experimental conditions, while Heart Rate Variability frequency-domain parameters reported sufficient accuracy in almost every experimental condition.</p>
Data for publication "Measuring the environment of a Cs qubit with dynamical decoupling sequences"
<p>Data sets as plotted in the preprint "Measuring the environment of a Cs qubit with dynamical decoupling sequences" are uploaded.<br> The zip file "data" contains a folder for each figure in the preprint (named after the figure). Each folder contains the data for all graphs in the respective figure.</p>
Figure 6. Axiopsis serratifrons A in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 6. Axiopsis serratifrons A. Milne-Edwards, 1873: a, male, MNHN IU-2013-637, anterior carapace, dorsal view. Parascytoleptus papua Poore and Collins, 2010, male, MNHN IU-2013-7128: b, major right cheliped. Paraxiopsis brocki (De Man, 1888), male, MNHN IU-2013-7108: c, anterior carapace, lateral view; d, antenna with scaphocerite; e, cheliped, merus; male, MNHN IU-2014-2736; f, g, pleopods 1, ventral and lateral views. Ralumcaris bisquamosa (De Man, 1905), male, MNHN IU-2013-7120: h, i, anterior carapace, dorsal and lateral views. Scale bars = 1 mm.
Figure 5 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 5. Allaxiopsis spinimana (De Man, 1905) male, NMV J67992: a, habitus; b, c, anterior carapace, dorsal and lateral views, with detail of rostrum; d, telson and uropod; e, major right cheliped, lateral; f, major right cheliped, fingers, mesial; g, minor left cheliped; h, maxilliped 3; i–l, pereopods 2–5; m, n, pleopod 2, with details of appendices interna and masculina. Scale bars = 1 mm. Bases of many setae indicated by small ovals.
Figure 4 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 4. Allaxiopsis picteti (Zehntner, 1894), males, MNHN IU-2013-1209: a, b, anterior carapace, dorsal and lateral views; c, telson and uropod; d, minor right cheliped. MNHN IU-2013-2526: e, major left cheliped. Scale bar = 1 mm.
Figure 2 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 2. Parascytoleptus papua Poore and Collins, 2010: a, MNHN IU-2014-2735; b, MNHN IU-2013-7128. Paraxiopsis brocki (De Man, 1888): c, MNHN IU-2013-7108; d, MNHN IU-2014-2736. Ralumcaris bisquamosa (De Man, 1905): e, MNHN IU-2013-7120. Photo credits: AA, b, c, e; TYC, a, d.
Figure 1 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 1. Alienaxiopsis clypeata (De Man, 1888): a, b, MNHN unregistered (stn PR86). Allaxiopsis picteti (Zehntner, 1894): c, MNHN IU-2013- 1209. Axiopsis pica Kensley, 2003, MNHN IU-2013-7048: d, preserved; e, living. Axiopsis serratifrons A. Milne-Edwards, 1873: f, MNHN IU-2013-638; g, h, MNHN IU-2013-7052; i, MNHN IU-2013-7046; j, MNHN IU-2013-302. Photo credits: AA, a–c, e, g–j; TYC, f; GCBP, d.
Figure 7 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 7. Michelea papua sp. nov., holotype: a, lateral carapace, antenna, antennule, maxilliped 3; b, carapace, antenna, antennule; c, pleomere 6, telson, uropod; d, maxilliped 3; e, f, g, pereopods 1, 3, 4; h, pereopod 5 dactylus; i, j, pleopods 1, 2. Scale bar = 1 mm.
Figure 3 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 3. Alienaxiopsis clypeata (De Man, 1888), male, MNHN IU-2016-8134: a, b, anterior carapace, dorsal and lateral views; c, telson and uropod; d, major left cheliped; e, minor right cheliped. Scale bar = 1 mm.
ScienceDex guides
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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.