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1,068 results for “demographic”
Figure 1 in Genetic diversity, population structure and demographic history of Dugesia japonica in Taihang Mountains
Figure 1. Geographical distribution of Dugesia japonica populations sampled in Taihang Mountains.
Data from: Integrating demographic niches and black spruce range expansion at subarctic treelines
<p>When investigating relationships between species' niches and distributions, niches can be divided demographically, resulting in unique niches for different life stages. This approach can identify changing substrate requirements throughout a species' life cycle. Using non-metric multidimensional scaling, we quantified microsite conditions associated with successful recruitment in the tundra landscape and successful seed production amongst adult trees of black spruce (<em>Picea mariana</em>) at subarctic treeline in Yukon, Canada to assess how life stage-specific requirements may impact the distribution of this widespread boreal tree species. Treeline ecotones in this region showed high heterogeneity in tundra microsites available for establishment. Black spruce exhibited changing microsite associations from germination to reproductive maturity, which were mainly driven by changes in plant community and soil moisture. These associations limit the microsites where individuals can establish and reproduce to a subset available within the heterogeneous landscape. Overall, we suggest that (1) substrates suitable for early recruitment are limited at the range edge; and (2) reproductive adults have a narrow niche, limiting successful seed production in adults and forming sink populations where suitable conditions are limited. Our multivariate assessment of microsite suitability can provide valuable insights into the spatial distribution of a species throughout its life cycle and identify life stage-specific constraints to range expansion.</p>
Data from: Demographic effects of a megafire on a declining prairie grouse in the mixed-grass prairie
<p>Recent studies have documented benefits of small, prescribed fire and wildfire for grassland-dependent wildlife, such as lesser prairie-chickens (<em>Tympanuchus</em> <em>pallidicintus</em>), but wildlife demographic response to the scale and intensity of megafire (wildfire > 40,000 ha) in modern fragmented grasslands remains unknown. Limited available grassland habitat makes it imperative to understand if increasing frequency of megafires could further reduce already declining lesser prairie-chicken populations, or if historical evolutionary interactions with fire make lesser prairie-chickens resilient. To evaluate lesser prairie-chicken demographic response to megafires, we compared lek counts, nest density, and survival rates of adults, nests, and chicks before (2014–2016) and after (2018–2020) a 2017 megafire in the mixed-grass prairie of Kansas, USA (Starbuck fire ~254,000 ha). There was a 67% decline in attending males on leks post-fire and a 46% decline in occupied leks post-fire. Despite population declines as indicated by lek counts, adult female breeding season survival (Ŝ) was similar pre- (Ŝ <span>= </span>0.65 ± 0.08 [SE]) and post-fire (0.61 ± 0.08), as was chick survival (pre-fire: 0.23 ± 0.07; post-fire: 0.27 ± 0.11). Nest survival appeared lower post-fire (pre-fire: 0.38 ± 0.06; post-fire: 0.20 ± 0.06), <span>but did not differ at the 95% confidence interval.</span> Nest density of marked females declined 73% in areas burned by megafire. Although lesser prairie-chickens persisted in the study area and we documented minimal effects on most demographic rates, reduced lesser prairie-chicken abundance and reproductive output suggests full recovery may take >3 years. Increased propensity for megafire resulting from suppression of smaller fires, compounded by climate change and woody encroachment, may impose a short-term (3-5 year) threat to already declining lesser prairie-chicken populations.</p>
Data for Apalachicola Bay oyster demographic analysis
<p>Processed data describing the number and lengths of oysters sampled from long-term fisheries independent sampling in Apalachicola Bay, Florida. Original (raw) data collected by Florida Fish and Wildlife Conservation Commission and Florida Department of Agriculture and Consumer Services.</p>
Data for: Using a demographic model to project the long-term effects of fire management on tree biomass in Australian savannas
<p>Tropical savannas are characterised by high primary productivity and high fire frequency, such that much of the carbon captured by vegetation is rapidly returned to the atmosphere. Hence, there have been suggestions that management-driven reductions in savanna fire frequency and/or severity could significantly reduce greenhouse gas emissions and sequester carbon in tree biomass. However, a key knowledge gap is the extent to which savanna tree biomass will respond to modest shifts in fire regimes due to plausible, large-scale management interventions. Here, we: (1) characterise relationships between the frequency and severity of fires and key demographic rates of savanna trees, based on long-term observations in vegetation monitoring plots across northern Australia; (2) use these relationships to develop a process-explicit demographic model describing the effects of fire on savanna tree populations; and (3) use the demographic model to address the question: to what extent is it feasible, through the strategic application of prescribed burning, to increase tree biomass in Australian tropical savannas? Our long-term tree monitoring dataset included observations of 12,344 tagged trees in 236 plots, monitored for between 3 and 24 years. Analysis of this dataset showed that frequent high-severity fires significantly reduced savanna tree recruitment, survival and growth. Our demographic model suggested that: (1) despite the negative effects of frequent high-severity fires on demographic rates, savanna tree biomass appears to be suppressed by only a relatively small amount by contemporary fire regimes, characterised by a mix of low- to high-severity fires; and (2) plausible, management-driven reductions in the frequency of high-severity fires are likely to lead to increases in tree biomass of about 11.0 t DM ha<sup>–1</sup> (95% confidence interval: -1.2–20.8) over a century. Accounting for this increase in carbon storage could generate significant carbon credits, worth on average three times those generated annually by current greenhouse gas (methane and nitrous oxide) abatement projects, and has the potential to significantly increase the economic viability of fire/carbon projects, thereby promoting ecologically sustainable management of tropical savannas in Australia and elsewhere. This growing industry has the potential to bring much-needed economic activity to savanna landscapes, without compromising important natural and cultural values.</p>
Nationwide genomic biobank in Mexico unravels demographic history and complex trait architecture from 6,057 individuals: GWAS summary statistics
<p>Latin America continues to be severely underrepresented in genomics research, and fine-scale genetic histories as well as complex trait architectures remain hidden due to the lack of Big Data. To fill this gap, the Mexican Biobank project genotyped 1.8 million markers in 6,057 individuals from 32 states and 898 sampling localities across Mexico with linked complex trait and disease information creating a valuable nationwide genotype-phenotype database. Through a suite of state-of-the-art methods for ancestry deconvolution and inference of identity-by-descent (IBD) segments, we inferred detailed ancestral histories for the last 200 generations in different Mesoamerican regions, unravelling native and colonial/post-colonial demographic dynamics. We observed large variations in runs of homozygosity (ROH) among genomic regions with different ancestral origins reflecting their demographic histories, which also affect the distribution of rare deleterious variants across Mexico. We analysed a range of biomedical complex traits and identified significant genetic and environmental factors explaining their variation, such as ROH found to be significant predictors for trait variation in BMI and triglycerides.<br> ======================================</p> <p>This dataset contains GWAS summary statistics for the Mexico Biobank Project. Summary statistics for 22 binary and quantitative traits are provided from the full cohort of 5721 individuals from across Mexico, and a subset of 1061 individuals inferred to have more than 90% Native American ancestry.</p>
Dances with wolves: the demographic consequence of asymmetric competition and intraguild predation in a native-invasive skink system
<p><span>1. Currently, we lack enough knowledge to fully explain how the impacts of species invasion on native communities are attributed to multifaceted, individual-based behavioral outcomes.</span></p> <p><span>2. Here, we illustrate the long-term population dynamics of the native long-tailed sun skink (Eutropis longicaudata) before and after the invasion of the common sun skink (Eutropis multifasciata). We conducted diet investigation, morphological measurement, and a series of behavioral experiments both in the field and laboratory. We explained how the impacts of the invasive skink on the native skink can cascade towards the population level based on these individual-level behavioral data.</span></p> <p><span>3. We present evidence of competition exclusion of the native skink population resulting from the invasion of the common sun skink. The drastic decline found in the native skink population was largely accounted for by low recruitment, as shown by the decrease in its clutch numbers correspondingly.</span></p> <p><span>4. We also found dominance of the invasive skink in both exploitation competition and intraguild predation. Considering the highly overlapping morphological and dietary niches between the two species, our findings imply that the native skink has undergone strong food competition and predation pressure on its eggs and juveniles.</span></p> <p><span>5. Interestingly, the native skink started to display parental care behavior two years after the invasion event, and its clutch survival rate has recovered since then. The shift in parental care behavior may help the native skink cope with this new predation pressure from the invasive skink.</span></p> <p>6. Overall, the two competitive skinks showed low chances of coexisting. The negative population growth of this native skink species may be primarily derived from poor reproductive performance, given a sharp decline in its clutch numbers and its inferiority in exploitation competition, despite rebounding clutch survival rates.</p>
Data from: Demographic histories shape population genomics of the common coral grouper (Plectropomus leopardus)
<p>Many coral reef fishes display remarkable genetic and phenotypic variation across their geographic ranges. Understanding how historical and contemporary processes have shaped these patterns remains a focal question in evolutionary biology since they reveal how diversity is generated and how it may respond to future environmental change. Here we compare the population genomics and demographic histories of a commercially and ecologically important coral reef fish, the common coral grouper (<em>Plectropomus</em> <em>leopardus</em> [Lacépède 1802]), across two adjoining regions (the Great Barrier Reef; GBR, and the Coral Sea, Australia) spanning approximately 14 degrees of latitude and 9 degrees of longitude. We analysed 4,548 single nucleotide polymorphism (SNP) markers across 11 sites and show that genetic connectivity between regions is low, despite their relative proximity (~ 100 km) and an absence of any obvious geographic barrier. Inferred demographic histories using 10,479 markers suggest that the Coral Sea population was founded by a small number of GBR individuals and that divergence occurred ~ 190 kya under a model of isolation with asymmetric migration. We detected population expansions in both regions, but estimates of contemporary effective population sizes were approximately 50 % smaller in Coral Sea sites, which also had lower genetic diversity. Our results suggest that <em>P. leopardus</em> in the Coral Sea have experienced a long period of isolation that precedes the recent glacial period (~ 10–120 kya) and may be vulnerable to localised disturbances due to their relative reliance on local larval replenishment. While it is difficult to determine the underlying events that led to the divergence of Coral Sea and GBR lineages, we show that even geographically proximate populations of a widely dispersed coral reef fish can have vastly different evolutionary histories.</p>
Conservation prioritisation through genomic reconstruction of demographic histories applied to two endangered suids in the Malay Archipelago
<p><strong>Aim</strong>: The biodiversity of the Malay Archipelago is the product of the region's rich biogeographical history with periods of island connectivity and isolation during the Pleistocene glacial cycles. Here, the case of two endemic suid species, the Javan (<em>Sus verrucosus</em>) and Bawean (<em>S. blouchi</em>) warty pigs, was used to illustrate how biogeographic processes and recent anthropogenic pressures can shape demographic histories with significant implications for species conservation.</p> <p><strong>Location</strong>: Malay Archipelago, with focus on Bawean and Java.</p> <p><strong>Methods</strong>: We employed genome-wide single nucleotide polymorphisms from the Porcine SNP60 v2 BeadChip to assess interspecific genetic differentiation, to estimate divergence times, and to perform demographic model selection.</p> <p><strong>Results</strong>: In contrast to the hypothesis of recent divergence during the last glacial maximum, <em>S. blouchi</em> was found to have diverged from <em>S. verrucosus</em> at least 166k years ago following a founder event. The contemporary <em>S. blouchi</em> population was characterised by a recent bottleneck that reduced the effective population size to less than 20. The genomic assessment supports the single species status of <em>S. blouchi</em>, as was previously proposed based on morphometrics. The demographic history of <em>S. verrucosus</em> showed evidence of secondary contact with the sympatric banded pig (<em>S. scrofa vittatus</em>) that colonised Java 70k years ago.</p> <p><strong>Main</strong> <strong>conclusions</strong>: While the Javan and Bawean warty pigs have persisted throughout the Pleistocene climatic oscillations, contemporary pressures from human activities threaten their survival and immediate action should be taken to grant legal protection to both <em>S. verrucosus</em> and <em>S. blouchi</em>. This study highlighted the use of demographic history modelling using genomic data to identify evolutionary significant units and inform conservation.</p>
Data and code for: Generation and applications of simulated datasets to integrate social network and demographic analyses
<p class="MsoNormal"><span>Social networks are tied to population dynamics; interactions are driven by population density and demographic structure, while social relationships can be key determinants of survival and reproductive success. However, difficulties integrating models used in demography and network analysis have limited research at this interface. We introduce the R package genNetDem for simulating integrated network-demographic datasets. It can be used to create longitudinal social networks and/or capture-recapture datasets with known properties. It incorporates the ability to generate populations and their social networks, generate grouping events using these networks, simulate social network effects on individual survival, and flexibly sample these longitudinal datasets of social associations. By generating co-capture data with known statistical relationships it provides functionality for methodological research. We demonstrate its use with case studies testing how imputation and sampling design influence the success of adding network traits to conventional Cormack-Jolly-Seber (CJS) models. We show that incorporating social network effects in CJS models generates qualitatively accurate results, but with downward-biased parameter estimates when network position influences survival. Biases are greater when fewer interactions are sampled or fewer individuals are observed in each interaction. While our results indicate the potential of incorporating social effects within demographic models, they show that imputing missing network measures alone is insufficient to accurately estimate social effects on survival, pointing to the importance of incorporating network imputation approaches. genNetDem provides a flexible tool to aid these methodological advancements and help researchers test other sampling considerations in social network studies.</span></p>
cultural heritage elements in Andalusia and demographic data sorted by urban category
<p>Dataset concerning cultural heritage elements and demographic data in Andalusia at the municipality level, as they appear on SIMA (Sistema de Información Multiterritorial de Andalucía), March 2023. They have been sorted by urban category, depending on the number of inhabitants of each municipality: less than 1.000 inhabitants, 1.000 to 10.000 inhabitants, 10.000 to 100.000 inhabitants, and more than 100.000 inhabitants.</p>
Data from: Demographic consequences of an extreme heatwave are mitigated by spatial heterogeneity in an annual monkeyflower
<p>This repository includes three different datasets as well as associated readme files. One dataset contains fitness data for individuals planted within a common garden experiment planted near the Browder Ridge Trailhead, Oregon USA in 2019. The second dataset contains fecundity data from 12 populations in the Central Oregon Cascades in 2018 and 2019. The final dataset contains demographic and phenological data from eleven populations in the Central Oregon Cascades in 2019. </p>
GIS output and layers for the physiologically based demographic modeling analysis of interacting olive and olive fly in Andalusia
<p>GIS output and layers for the physiologically based demographic modeling analysis of interacting olive and olive fly in Andalusia performed under the MED-GOLD project within the Horizon 2020 framework program of the European Union. This version includes the file eurocordex_HadGEM2_ES_RCA4_2071-2100_rcp8.5.zip that was inadvertently not included in previous versions.</p>
Data from: Hidden demographic impacts of fishing and environmental drivers of fecundity in a sea turtle population
<p><span>Fisheries bycatch is a critical threat to sea turtle populations worldwide, particularly because turtles are vulnerable to multiple gear types. The Canary Current is an intensely fished region, yet there has been no demographic assessment integrating bycatch and population management information of the globally significant Cabo Verde loggerhead turtle (<em>Caretta</em> <em>caretta</em>) population. Using Boa Vista island (Eastern Cabo Verde) subpopulation data from capture-recapture and nest monitoring (2013–2019), we evaluated population viability and estimated regional bycatch rates (2016–2020) in longline, trawl, purse-seine, and artisanal fisheries. We further evaluated current nesting trends in the context of bycatch estimates, existing hatchery conservation measures, and environmental (net primary productivity) variability in turtle foraging grounds. We projected that current bycatch mortality rates would lead to the near extinction of the Boa Vista subpopulation. Bycatch reduction in longline fisheries and all fisheries combined would increase finite population growth rate by 1.76% and 1.95%, respectively. Hatchery conservation increased hatchling production and reduced extinction risk, but alone it could not achieve population growth. Short-term increases in nest counts (2013–2021), putatively driven by temporary increases in net primary productivity, may be masking ongoing long-term population declines. When fecundity was linked to net primary productivity, our hindcast models simultaneously predicted these opposing long-term and short-term trends. Consequently, our results showed conservation management must diversify from land-based management. The masking effect we found has broad-reaching implications for monitoring sea turtle populations worldwide, demonstrating the importance of directly estimating adult survival and that nest counts might inadequately reflect underlying population trends.</span></p>
Temporal correlations among demographic parameters are ubiquitous but highly variable across species
<p><span>Temporal correlations among demographic parameters can strongly influence </span><span>population dynamics. Our empirical knowledge, however, is very limited regarding the direction and the magnitude of these correlations and how they vary among demographic parameters and species' life-histories</span><span>. Here, we</span><span> use long-term demographic data from 15 bird and mammal species with contrasting pace of life to quantify correlation patterns among five key demographic parameters: juvenile and adult survival, reproductive probability, reproductive success and productivity.</span><span> Correlations among demographic parameters were ubiquitous, more frequently positive than negative, but strongly differed across species. Correlations did not markedly change along the slow-fast continuum of life-histories, suggesting that they were more strongly driven by ecological than evolutionary factors. </span><span>As</span><span> positive temporal demographic correlations decrease the mean of the long-run population growth rate, the common practice of ignoring temporal correlations in population models could lead to the underestimation of extinction risks in most species.</span></p>
Low- and high-intensity fire in the riparian savanna: demographic impacts in an avian model species and implications for ecological fire management
<ol> <li><span>Climate change is driving changes in fire frequency and intensity, making it more urgent for conservation managers to understand how species and ecosystems respond. In tropical monsoonal savannas – Earth's most fire-prone landscapes – ecological fire management aims to prevent intense wildfires late in the dry season through prescribed low-intensity burns early in the dry season. Riparian habitats embedded within tropical savannas represent critical refuges for biodiversity, yet are particularly fire-sensitive. Better understanding of the impact of fire – including prescribed burns – on riparian habitats is therefore key but requires long-term detailed post-fire monitoring of species' demographic rates, as effects may persist and/or be delayed.</span></li> <li><span>We analyse impacts of (prescribed) low-intensity and (prescribed but escaped) high-intensity fire in northern Australian riparian and adjacent savanna habitat. We quantify multi-year impacts on density, survival, reproduction and dispersal of an Endangered riparian bird, the western purple-crowned fairy-wren (<em>Malurus coronatus coronatus</em>), in a well-studied individually-marked population.</span></li> <li><span>Following low-intensity fire, bird density was reduced by >20% in burnt compared to adjacent unburnt riparian habitat for ≥2.5 years. This was a result of reduced breeding success and recruitment for two years immediately following fire, rather than mortality or dispersal of adults.</span></li> <li><span>In contrast, high-intensity fire (in a dry year) resulted in a sharp decline in population density by 50% 2–8 months after fire, with no signs of recovery after 2.5 years. The decline in density was due to post-fire adult mortality, rather than dispersal. Breeding success of the (few) remaining individuals was low but not detectably lower than in unburnt areas, likely because breeding success was poor overall due to prevailing dry conditions.</span></li> <li> <span><em>Synthesis and applications</em>. </span><span>Even if there is no or very low mortality during fire, and no movement of birds away from burnt areas, both low- and high-intensity fire in the riparian zone reduce population density. However, the mechanism by which this occurs, and recovery time, differs with fire intensity. To minimise impacts of fire on riparian zones in tropical savannas, we suggest employing low-intensity prescribed burns under optimal conditions shortly after the breeding season.</span> </li> </ol>
Colony-level coral demographic data from Japan & Australia (2016-2019)
<p>The persistent exposure of coral communities to more variable abiotic regimes is assumed to augment their resilience to future climatic variability. Yet, while the determinants of coral population resilience across species remain unknown, we are unable to predict the winners and losers across reef ecosystems exposed to increasingly variable conditions. Using annual surveys of 3171 coral individuals across Australia and Japan (2016-2019), we explored spatial variation across the short- and long-term dynamics of competitive, stress-tolerant, and weedy assemblages to evaluate how thermal variability mediates the structural composition of coral communities. Here this dataset contains the raw colony-level data collected during these annual surveys, detailing the size, survival, and recruitment of coral colonies within a series of permenant plots arranged throughout the reef communities of Okinawa, Kochi (both Japan), the Solitary Islands Marine Park, and Heron Island (both Australia). This data set facilitates the comparison of coral population dynamics between tropical and subtropical ecoregions and between different taxonomic and morpho-functional groups.</p>
Effects of litter quality on foraging behaviour and demographic parameters in Folsomia candida (Collembola)
<p><span>Litter quality has long been associated with demographic parameters of Collembola populations. However, little is known about the capacity of Collembola to perceive and seek better litter quality. To address this gap, three complementary laboratory experiments were carried out with the Collembola <em>Folsomia candida</em>. First, populations were fed on three different types of leaf litters (<em>Quercus pubescens, Acer opalus </em>and<em> Prunus avium</em>) and a control (agar-agar-brewer's yeast mixture) for six weeks to assess their impacts on demography (reproduction rate and population size). Second, the body length of individuals differentially fed with the same four types of resources was measured to assess a functional trait that can potentially affect movement parameters such as prospected area or foraging speed. Third, <em>F. candida</em> isolated individuals were exposed to the same litter quality gradient and placed at increasing distances from the litter (from 1 to 5 cm). For ten minutes, their foraging behaviours were recorded which included their prospected area, foraging speed, perception distance and success in reaching the litter (foraging success). As expected, low-quality litter (i.e., <em>Q. pubescens</em>) contributed to low population growth compared to the control treatment and the high-quality litters (<em>P. avium </em>and<em> A. opalus</em>). In the third experiment, the probability of finding the resource was negatively correlated to the distance but was unrelated to the litter quality and the Collembola body length. When resource was perceived, F. candida was able to switch from non-directional to directional movements, with a large variability in the perception distance from a few millimeters to several centimeters. Taken together, our results indicate that litter quality plays a relevant role on Collembola demographic parameters once the population settles on litter patch, but not on foraging behaviour to select high-quality resources.<br></span></p>
Data from: Phylogenetic, population structure, and population demographic analyses reveal that Vicia sepium in Japan is native and not introduced
<p><span><em>Vicia</em> <em>sepium</em></span><span> (bush vetch) is a perennial legume widely distributed throughout the Eurasian continent. However, its distribution in Japan is limited to Mt. Ibuki and small parts of central and southern Hokkaido. Therefore, each Japanese <em>V. sepium</em> lineage has been considered to have been introduced separately from Europe. Here, we examined whether the species was introduced or not on the basis of cpDNA sequences and genome-wide SNPs from Japanese and overseas samples. Both the cpDNA haplotype network and the nuclear DNA phylogenetic tree showed that Japanese <em>V. sepium</em> is monophyletic. Furthermore, although the nuclear DNA phylogenetic tree also showed that each lineage is clearly monophyletic, genetic admixture of the genetic cluster dominated in the Hokkaido lineage was also detected in the Mt. Ibuki lineage. Population divergence analysis showed that the two lineages diverged during the last glacial period. The Mt. Ibuki lineage showed a sudden population decline 300–400 years ago, indicating that some anthropogenic activity might be involved, while the Hokkaido lineage showed a gradual population decline from 5,000 years ago. Consequently, these two lineages show low current genetic diversity compared with overseas lineages. These results show that the Japanese <em>V. sepium</em> is not introduced but is native.</span></p>
Biogeographic barriers and historical climate affect phylogeographic structure and demographic history of the common gartersnake
<p><strong>Aim</strong>: Current distributions of widespread North American (NA) species have been shaped by Pleistocene glacial cycles, latitudinal temperature gradients, sharp longitudinal habitat transitions, and the vicariant effects of major mountain and river systems that subdivide the continent. Within these transcontinental species, genetic diversity patterns might not conform to established biogeographic breaks compared to more spatially restricted taxa due to intrinsic differences (e.g., greater dispersal ability in generalist species) or spatiotemporal differences (e.g., wide-ranging species predate younger barriers). In this study, we highlight the effects of these extrinsic variables on genetic structuring by investigating the phylogeographic history of a widespread generalist squamate found throughout NA. </p> <p><strong>Location</strong>: North America</p> <p><strong>Taxon</strong>: Common gartersnake, <em>Thamnophis sirtalis</em></p> <p><strong>Methods</strong>: We evaluate the effects of major river basins and the forest-grassland transition into the Interior Plains on genetic structure patterns using phylogenetic, spatially informed population structure, and demographic analyses of SNP data, and address range expansion history with ecological niche modeling using locality and historic climate data.</p> <p><strong>Results</strong>: We identify four phylogeographic lineages with varying degrees of connectivity between them. We find discordant population structure patterns between sex-linked and autosomal loci with respect to the relationship between the central NA lineage relative to coastal lineages. We find support for southeast Pleistocene refugia where recent secondary contact occurred during the Last Glacial Maximum and evidence for both northern and southern refugia in western NA.</p> <p><strong>Main Conclusion</strong>: Our results provide strong evidence for a Middle Pliocene origin for <em>Thamnophis</em> <em>sirtalis</em> in central-southeastern NA preceding its rapid expansion across the continent prior to middle Pleistocene climate-mediated lineage formation. We implicate major riverine networks within the Mississippi watershed in likely repeated westward expansion events across the Interior Plains. Finally, we corroborate prior conclusions that phenotypic differences between subspecies do not reflect shared evolutionary history and note that the degree of separation between inferred lineages warrants further investigation before any taxonomic revisions are proposed.</p>
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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.