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Dataset results
571 results for “Brightness”
Data from: Being a bright snake: testing aposematism and mimicry in a Neotropical forest
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Data from: Fifty shades of brown: Macroevolution of plumage brightness in the Furnariida, a large clade of drab Neotropical passerines
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Radar dataset for 'Two layers of melting ice particles within a single radar bright band' study
<p>Radar dataset for 'Two layers of melting ice particles within a single radar bright band' study.</p> <p>Site: The University of Helsinki Station for Measuring Ecosystem-Atmosphere Relation II (SMEAR II), Hyytiälä, Southern Finland (61.845N, 24.287E).</p> <p>Time: April 18th - 19th, 2018 UTC.</p> <p>Instruments: Vertically pointing W- and C- band radars (HYDRA-W and -C). In addition to reflectivity, LDR, Doppler velocity and spectrum width that are observed by both radars, HYDRA-W records Doppler spectra. HYDRA-C operates with the maximum unambiguous Doppler velocity of 4.98 m/s. The settings of the HYDRA-W observations depend on the range. Below 996 m, the range resolution is 25.5 m and Doppler spectra are computed by using a 1024-point FFT with the Nyquist velocity of 10.24 m/s. For the heights between 996 m and 3577 m, the range resolution is kept the same, while the Doppler spectrum is computed using 512-point FFT with the Nyquist velocity of 5.12 m/s. For the heights above 3577 m, the range resolution is decreased to 34 m, while the Doppler measurements are done using the same settings. The temporal resolution of HYDRA-C and HYDRA-W measurements are 1.37 and 3.35 s, respectively. </p>
Dataset for Bright x-ray radiation from plasma bubbles in an evolving laser wakefield accelerator
<p>This dataset contains the raw data and analysis scripts for results presented in the paper. " Bright x-ray radiation from plasma bubbles in an evolving laser wakefield accelerator"</p>
Milky Way Satellites Shining Bright in Gravitational Waves: dataset release
<p>Data release relative to the analysis presented in:<br> Milky Way Satellites Shining Bright in Gravitational Waves (<a href="https://arxiv.org/abs/2002.10465">arxiv:2002.10465</a>)<br> Folders and subfolders are arranged by source properties</p> <ul> <li>Satellite name <ul> <li>Frequency <ul> <li>Component Masses <ul> <li>Inclination</li> </ul> </li> </ul> </li> </ul> </li> </ul> <p>as described in the paper.<br> Posterior samples, parameter estimation configuration files, sky localisation and SNR estimates are released.</p>
Low surface brightness observations with the Roman Telescope: The intracluster light
<p>There is a huge amount of astrophysical events that remain barely studied due to the lack of large, deep surveys. These events are those which are very faint and extend over large areas of the sky. For instance, only a handful of galaxy clusters have been observed with enough depth to witness the intracluster light (ICL), made up of stars that drift freely between galaxies in the cluster.<br> This light is key to understanding the assembly mechanisms occurring inside galaxy clusters. However, little is known about this light as it is very difficult to observe due to its low surface brightness.<br> The availability of deep surveys, such as the Hubble Frontier Fields, have expanded our knowledge of the properties, and therefore the origin, of the ICL. However, larger samples are needed to understand the evolution of this component with time and the efficiency of the different evolutionary processes inside galaxy clusters.<br> WFIRST appears as a unique tool to investigate the evolution of the ICL with time. Observing in the IR, brings the advantage that the stellar populations of the ICL are brighter in those wavelengths and their evolution with time is less dramatic compared to the optical bands, making studies of the fraction of ICL with redshift more consistent.<br> In this talk, I will present the latest advances in our understanding of the ICL. I will also talk about the lessons learned using this magnificent dataset that can be applied in future observations of the ICL with WFIRST.</p>
Data from: Sexual signals for the colour-blind: cryptic female mantids signal quality through brightness
1. Cryptic coloration may evolve in response to selective pressure imposed by predators, yet effective intraspecific communication may require some level of detectability. This creates a tension between the benefits of sexually selected visual traits and the predatory costs imposed by greater conspicuousness, and little is known about how this tension may be ameliorated in highly cryptic species. 2. We explore these competing demands in the false garden mantid Pseudomantis albofimbriata, a colour-blind and seemingly cryptic insect. We use reflectance spectrometry and receptor-noise modelling to characterize the conspicuousness of mantid body regions in the visual systems of mates (mantids), as well as potential predators (birds) and prey (bees). We then use condition manipulation and conspecific choice tests to further explore the colour traits of interest. 3. Based on visual modelling, we find that male mantids are inconspicuous to conspecifics, prey and predators – that is, they are chromatically and achromatically cryptic. In contrast, female mantids are chromatically cryptic to all potential receivers, but their abdomens are achromatically conspicuous. Our food manipulation experiment shows that females in good condition (and therefore with more eggs) have brighter abdomens than females in poor condition. Choice assays show male mantids are consistently attracted to females bearing brighter abdomens. 4. Our results reveal brightness-mediated sexual signalling in a colour-blind and classically cryptic insect. By communicating in the only visual channel available to them, female mantids are conspicuously signalling their quality to mates, while potentially minimizing their conspicuousness to predators and prey. Furthermore, by signalling with only a single body region, female mantids are apparently using coincident disruptive coloration to further decrease detectability to potential eavesdroppers. 5. Our data reveal a novel example of the way in which the trade-off between sexual selection for conspicuousness and natural selection for crypsis may be mediated in a visual signalling system. Such signals may be common in apparently cryptic species, and this study once again demonstrates the importance of analysing visual signals beyond the capacity of human vision.
Data from: The bright incubate at night: sexual dichromatism and adaptive incubation division in an open-nesting shorebird
Ornamentation of parents poses a high risk for offspring because it reduces cryptic nest defence. Over a century ago, Wallace proposed that sexual dichromatism enhances crypsis of open-nesting females although subsequent studies found that dichromatism per se is not necessarily adaptive. We tested whether reduced female ornamentation in a sexually dichromatic species reduces the risk of clutch depredation and leads to adaptive parental roles in the red-capped plover Charadrius ruficapillus, a species with biparental incubation. Males had significantly brighter and redder head coloration than females. During daytime, when visually foraging predators are active, colour-matched model males incurred a higher risk of clutch depredation than females, whereas at night there was no difference in depredation risk between sexes. In turn, red-capped plovers maintained a strongly diurnal/nocturnal division of parental care during incubation, with males attending the nest largely at night when visual predators were inactive and females incubating during the day. We found support for Wallace's conclusion that reduced female ornamentation provides a selective advantage when reproductive success is threatened by visually foraging predators. We conclude that predators may alter their prey's parental care patterns and therefore may affect parental cooperation during care.
FIGURE 6 in A new, brightly colored species of Pseudoboa Schneider, 1801 from the Amazon Basin (Serpentes, Xenodontinae)
FIGURE 6. Schematic representation of head and dorsum color patterns in (A) Pseudoboa serrana, (B) P. haasi, (C) P. martinsi, (D) P. coronata, (E) P. neuwiedii, (F, G) P. nigra. Juvenile and adult patterns shown in left and right columns, respectively. Head towards the right side of each drawing. See text for a detailed explanation.
FIGURE 5 in A new, brightly colored species of Pseudoboa Schneider, 1801 from the Amazon Basin (Serpentes, Xenodontinae)
FIGURE 5. Distribution of Pseudoboa martinsi in the Amazon basin. Abbreviations shown for the following Brazilian states: Pará (Pa), Roraima (Rr), Amazonas (Am), Rondônia (Ro), Acre (Ac), Mato Grosso (Mt).
FIGURE 3. Pseudoboa martinsi, MZUSP 8549 in A new, brightly colored species of Pseudoboa Schneider, 1801 from the Amazon Basin (Serpentes, Xenodontinae)
FIGURE 3. Pseudoboa martinsi, MZUSP 8549 (holotype) fully everted and inflated hemipenis in (A) sulcate and (B) asulcate views. Scale: 10 mm.
FIGURE 2. Pseudoboa martinsi, MZUSP 8549 in A new, brightly colored species of Pseudoboa Schneider, 1801 from the Amazon Basin (Serpentes, Xenodontinae)
FIGURE 2. Pseudoboa martinsi, MZUSP 8549 (holotype) head in (A) dorsal, (B) ventral, and (C) lateral views, and mid-body in (D) left lateral view.
FIGURE 1. Pseudoboa martinsi, MZUSP 8549 in A new, brightly colored species of Pseudoboa Schneider, 1801 from the Amazon Basin (Serpentes, Xenodontinae)
FIGURE 1. Pseudoboa martinsi, MZUSP 8549 (holotype) adult male from Fazenda Porto Alegre, Manaus, State of Amazonas, Brazil, (A) dorsal view, (B) ventral view. Scale: 100 mm.
FIGURE 4 in A new, brightly colored species of Pseudoboa Schneider, 1801 from the Amazon Basin (Serpentes, Xenodontinae)
FIGURE 4. Pseudoboa martinsi, adult specimen from Reserva Florestal Adolfo Ducke, State of Amazonas, Brazil.
FIGURE 4 in Beautiful bright belly: A distinctive new microhylid frog (Amphibia: Stumpffia) from eastern Madagascar
FIGURE 4. Sonagram and oscillogram of two calls of Stumpffia kibomena sp. nov. (recorded on 20 March 1995 at 15:15 h and 24°C air temperature).
FIGURE 3 in Beautiful bright belly: A distinctive new microhylid frog (Amphibia: Stumpffia) from eastern Madagascar
FIGURE 3. Comparative Stumpffia species in dorsolateral and ventral view. (A–B) Stumpffia aff. kibomena from Masoala (photos: J. E. Randrianirina); (C–D) S. grandis from its type locality Marojejy (photos: F. Glaw & M. Vences); (E–F) S. roseifemoralis from its type locality Marojejy (photos: F. Glaw & M. Vences).
FIGURE 1 in Beautiful bright belly: A distinctive new microhylid frog (Amphibia: Stumpffia) from eastern Madagascar
FIGURE 1. Stumpffia kibomena sp. nov. in life, in dorsolateral and ventral view, respectively. (A–B) One or two individuals (not collected) from Andasibe used for DNA sequencing (photos: D. Edmonds); (C–D) female specimen from An'Ala (photos: F. Glaw); (E–F) male paratype NMBE 1034211 from near Andasibe (photos: D. Vallan).
FIGURE 2 in Beautiful bright belly: A distinctive new microhylid frog (Amphibia: Stumpffia) from eastern Madagascar
FIGURE 2. Stumpffia kibomena sp. nov., preserved male holotype (ZFMK 60007) in dorsal and ventral view (photos: M. Franzen).
FIGURE 6 in A new species of bright-eyed treefrog (Mantellidae) from Madagascar, with comments on call evolution and patterns of syntopy in the Boophis ankaratra complex
FIGURE 6. Comparative oscillograms (top) and corresponding spectrograms (bottom) of single notes of the advertisement calls on the same time scale in the Boophis ankaratra complex. Species shown are: (A) B. boppa (Maharira); (B) B. miadana (Andohahela); (C) B. ankaratra (Maharira); (D) B. schuboeae (Ambatolahy); and (E) B. haingana (Andohahela). Spectrogram was produced in SEEWAVE using a Hanning window length of 512.
FIGURE 12 in A new species of bright-eyed treefrog (Mantellidae) from Madagascar, with comments on call evolution and patterns of syntopy in the Boophis ankaratra complex
FIGURE 12. Reproductive behavior of species of the B. ankaratra complex. (A) A typical perch of a male B. boppa preparing to call; (B) a male B. boppa during emission of advertisement call; and (C) amplexus, male not collected, female KU 336829 of B. boppa.
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.