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1,068 results for “demographic”
Trends in authorship demographics for manuscripts published in Endocrine journals: A 70-year analysis
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Data from: Accounting for uncertainty in dormant life stages in stochastic demographic models
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Data from: Ecological speciation in sympatric palms: 4. Demographic analyses support speciation of Howea in the face of high gene flow
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Data from: The ecology of wildlife disease surveillance: demographic and prevalence fluctuations undermine surveillance
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Data from: How well do molecular and pedigree relatedness correspond, in populations with variable mating systems, and types and quantities of molecular and demographic data?
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Data from: The double edged sword: the demographic consequences of the evolution of self-fertilisation
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Data from: Inbreeding depression and drift load in small populations at demographic disequilibrium
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Data from: Evaluation of demographic history and neutral parameterization on the performance of Fst outlier tests
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Who are we now? A demographic assessment of the evolution societies
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Data from: Integrated population models poorly estimate the demographic contribution of immigration
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Lwala household survey 2018-2019: Demographic, depression, and economic variables
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Data from: Spatial familial networks to infer demographic structure of wild populations
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Autoantibodies are abundant in all human sera: a demographic characterization via protein microarrays
GEO Series GSE39087. Homo sapiens. 166 samples. Type: Protein profiling by protein array.
The dogs of Chernobyl: demographic insights into populations inhabiting the nuclear exclusion zone
GEO Series GSE219090. Canis lupus familiaris. 299 samples. Type: Genome variation profiling by SNP array.
Key patient demographics shape innate immune topography in non-critical hypoxic COVID-19 pneumonia
GEO Series GSE236177. Homo sapiens. 41 samples. Type: Expression profiling by high throughput sequencing.
World Demographic Data by Country (1955-2020)
<p>Demographic data set of countries of the world (1955-2020). This dataset is created using Web Scraping technics on webpage: <a href="https://www.worldometers.info/population/">https://www.worldometers.info/population/</a>.</p>
Dataset: Genetic and demographic trends from rear to leading edge are explained by climate and forest cover in a cold adapted ectotherm
<p>Two datasets were provided: </p> <p>1) Microsatellite polymorphism of 16 loci in the diploid lizard species <em>Zootoca vivipara louislantzi</em></p> <p>2) Geographic characteristics of the 42 sampled populations </p>
Data from: Speciation in mountain refugia: phylogeography and demographic history of the pine siskin and black-capped siskin complex
Following Pleistocene glacial maxima, species that adapted to temperate climates in low-latitude refugia had to modify their ranges as climate changed, expanding either latitudinally towards the poles, or altitudinally to higher elevations in mountainous regions. Within just a few thousand years, populations taking alternative routes during interglacials became isolated from each other and subjected to different selection pressures, often leading to lineage divergence and speciation. The pine siskin Spinus pinus is a common and widespread songbird showing relative phenotypic uniformity across the North American continent. One exception is the subspecies found in the highlands of northern Central America (S. p. perplexus), which shows marked differentiation in plumage color and shares some traits with the endemic and partly sympatric black-capped siskin S. atriceps, suggesting potential introgression or even a hybrid origin of perplexus. Relationships and species limits among pinus, perplexus and atriceps have been controversial for decades. We provide new molecular evidence to help resolve the evolutionary history of the group. Phylogenetic analysis of mitochondrial DNA and nuclear intron sequences revealed three distinct lineages within the complex, corresponding to: 1) S. pinus individuals from Canada through central Mexico (S. p. pinus and S. p. macropterus), 2) individuals from the highlands of Guatemala and Chiapas (S. p. perplexus), and 3) S. atriceps. Pine siskins across North America show evidence of a recent postglacial population expansion and extremely low levels of diversity and structure. In contrast, S. p. perplexus shows evidence of demographic stasis, reflecting long-term isolation and restricted dispersal. Marked and diagnostic genetic differences among the three lineages in mtDNA and at least one intron, suggest that a hybrid origin of S. p. perplexus is unlikely, yet some degree of introgression between S. p. perplexus and S. atriceps cannot be ruled out in localities where they occur in sympatry.
Data from: Intra-specific relatedness, spatial clustering and reduced demographic performance in tropical rainforest trees
Intra-specific negative density dependence promotes species coexistence by regulating population sizes. Patterns consistent with such density dependence are frequently reported in diverse tropical tree communities. Empirical evidence demonstrating whether intra-specific variation is related to these patterns, however, is lacking. The present study addresses this important knowledge gap by genotyping all individuals of a tropical tree in a long-term forest dynamics plot in tropical China. We show that related individuals are often spatially clustered, but having closely related neighbors reduces the growth performance of focal trees. We infer from the evidence, that dispersal limitation and negative density dependence are operating simultaneously to impact the spatial distributions of genotypes in a natural population. Furthermore, dispersal limitation decreases local intra-specific genetic diversity and increases negative density dependence thereby promoting niche differences and species co-existence as predicted by theory.
Data from: Demographic inferences using short-read genomic data in an Approximate Bayesian Computation framework: in silico evaluation of power, biases, and proof of concept in Atlantic walrus
Approximate Bayesian Computation (ABC) is a powerful tool for model-based inference of demographic population histories from large genetic data sets. For most organisms its implementation has been hampered by the lack of sufficient genetic data. Genotyping-by-sequencing (GBS) provides cheap genome-scale data to fill this gap, but its potential has not fully been exploited. Here, we explored power, precision and biases of a coalescent-based ABC approach where GBS data were modeled with either a population mutation parameter (θ) or with a fixed sites (FS) approach, allowing single or several segregating sites per locus. With simulated data ranging from 500 to 50,000 loci a variety of demographic models could be reliably inferred across a range of timescales and migration scenarios. Posterior estimates were informative with 1,000 loci for migration and split time in simple population divergence models. In more complex models posterior distributions were wide and almost reverted to the uninformative prior even with 50,000 loci. ABC parameter estimates, however, were generally more accurate than an alternative composite-likelihood method. Bottleneck scenarios proved particularly difficult and only recent bottlenecks without recovery could be reliably detected and dated. Notably, minor allele frequency filters – usual practice for GBS data – negatively affected nearly all estimates. With this in mind, we used a combination of FS and θ approaches on empirical GBS data generated from the Atlantic walrus (Odobenus rosmarus rosmarus), collectively providing support for a population split before the last glacial maximum followed by asymmetrical migration and a range-wide bottleneck. Overall, this study evaluates the potential and limitations of GBS data in an ABC-coalescence framework and proposes a best-practice approach.
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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.