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3,585 results for “Population study”
Data from: Population collapse of habitat-forming species in the Mediterranean: a long-term study of gorgonian populations affected by recurrent marine heatwaves
<p><span><span><span><span><span><span><span><span><span><span><span>Understanding the resilience of temperate reefs to climate change requires exploring the recovery capacity of their habitat-forming species from recurrent marine heatwaves (MHWs). Here, we show that, in a Mediterranean highly enforced Marine Protected Area established more than 40 years ago, habitat-forming octocoral populations that were firstly affected by a severe MHW in 2003 have not recovered after 15 years. Contrarily, they have followed collapse trajectories that have brought them to the brink of local ecological extinction. Since 2003, impacted populations of the red gorgonian <i>Paramuricea clavata</i> (Risso, 1826) and the red coral <i>Corallium rubrum</i> (Linnaeus, 1758) have followed different trends in terms of size structure, but a similar progressive reduction in density and biomass. Concurrently, recurrent MHWs were observed in the area during the 2003-2018 study period, which may have hindered populations recovery. The studied octocorals play a unique habitat-forming role in the coralligenous assemblages (i.e., reefs endemic to the Mediterranean Sea home to approximately 10% of its species). Therefore, our results underpin the great risk that recurrent MHWs pose for the long-term integrity and functioning of these emblematic temperate reefs.</span></span></span></span></span></span></span></span></span></span></span></p>
Impacts of using different standard populations in calculating age-standardized death rates when age-specific death rates in the populations being compared do not have a consistent relationship: A cross-sectional population-based observational study on US state HIV death rates
<p><strong>Objective</strong>: To examine if the rankings of state HIV age-standardized death rates (ASDRs) changed if different standard population (SP) was used.</p> <p><strong>Design</strong>:<strong> </strong>A cross-sectional population-based observational study. Setting 36 states in the United States.</p> <p><strong>Participants</strong>: People died from 2015 to 2019.</p> <p><strong>Main outcome measures</strong>: State HIV ASDR using 4 SPs, namely WHO2000, US2000, US2mor020, and Eur2011–2030.</p> <p><strong>Results</strong>: The rankings of 19 states did not change when ASDRs were calculated using US2000 and US2020. Of the 17 states whose rankings changed, the rankings of 9 states calculated using US2000 were higher than those calculated using US2020; in 8 states, the rankings were lower. The states with the greatest changes in rankings between US2000 and US2020 were Kentucky (12th and 9th, respectively) and Massachusetts (8th and 11th, respectively).</p> <p><strong>Conclusions</strong>: State ASDRs calculated using the current official SP (US2000) weigh middle-age HIV death rates more heavily than older-age HIV death rates, resulting in lower ASDRs among states with higher older-age HIV death rates.</p>
Figure 5 in First population study of Caribitroides (Caribitroides) tuxtlensis (Amphipoda: Talitridae) from a rainforest in Veracruz state, eastern Mexico
Figure 5. Mortality of Caribitroides (Caribitroides) tuxtlensis Lindeman, 1990. Relationship between age classes and the number of individuals in the Sierra de Santa Martha, Los Tuxtlas, Veracruz. A, females; B, males.
Figure 3 in First population study of Caribitroides (Caribitroides) tuxtlensis (Amphipoda: Talitridae) from a rainforest in Veracruz state, eastern Mexico
Figure 3. Size frequency distribution (Length total mm) and the Von Bertalanffy model for of Caribitroides (Caribitroides) tuxtlensis Lindeman, 1990 in the Sierra de Santa Martha, Los Tuxtlas, Veracruz. A, females; B, males.
Figure 4 in First population study of Caribitroides (Caribitroides) tuxtlensis (Amphipoda: Talitridae) from a rainforest in Veracruz state, eastern Mexico
Figure 4. Relationship between the total length of the gravid females Caribitroides (Caribitroides) tuxtlensis Lindeman, 1990 and the number of eggs, 1990 in the Sierra de Santa Martha, Los Tuxtlas, Veracruz.
FIGURE. Umbellules within four populations of Sanicula orthacantha, showing the fruits characters and the variation in numbers of staminate flowers (each line represents a plant individual). The ratio of staminate flowers number/ umbellule number is given for each individual. A. China, Hubei, Xuan'en, Qizimei Mountain, H.M. Li, Y.M. Yi & Y.S. Zhang 1077 (NAS). B. China, Jiangxi, Jiujiang, Lushan, H.M. Li, Y.S. Zhang & Y. Xu 1109 (NAS). C. China, Chongqing, Nanchuan, Jinfo Shan, H.M. Li, Y.S. Zhang & X. Zhang 1141 (NAS). D. China, Sichuan, Emei Shan, H.M. Li & Y.S. Zhang 1157 (NAS). All same scale. in Taxonomic studies on the genus Sanicula (Apiaceae) from China ( ): The clarification of some morphological distinction between S. orthacantha var. orthacantha and S. orthacantha var. brevispina, with the reduction of S. petagnioides to the synonymy of the former, and S. orthacantha var. stolonifera to
FIGURE. Umbellules within four populations of Sanicula orthacantha, showing the fruits characters and the variation in numbers of staminate flowers (each line represents a plant individual). The ratio of staminate flowers number/ umbellule number is given for each individual. A. China, Hubei, Xuan'en, Qizimei Mountain, H.M. Li, Y.M. Yi & Y.S. Zhang 1077 (NAS). B. China, Jiangxi, Jiujiang, Lushan, H.M. Li, Y.S. Zhang & Y. Xu 1109 (NAS). C. China, Chongqing, Nanchuan, Jinfo Shan, H.M. Li, Y.S. Zhang & X. Zhang 1141 (NAS). D. China, Sichuan, Emei Shan, H.M. Li & Y.S. Zhang 1157 (NAS). All same scale.
FIGURE. Umbellules within two populations of Sanicula orthacantha var. brevispina from China, Sichuan, Emei Shan, showing the fruits characters and the variation in numbers of staminate flowers (each line represents a plant individual). The ratio of staminate flowers number/ umbellule number is given for each individual. A. C.H. Li 1122 (NAS). B. H.M. Li & Y.S. Zhang 1151 (NAS). in Taxonomic studies on the genus Sanicula (Apiaceae) from China ( ): The clarification of some morphological distinction between S. orthacantha var. orthacantha and S. orthacantha var. brevispina, with the reduction of S. petagnioides to the synonymy of the former, and S. orthacantha var. stolonifera to
FIGURE. Umbellules within two populations of Sanicula orthacantha var. brevispina from China, Sichuan, Emei Shan, showing the fruits characters and the variation in numbers of staminate flowers (each line represents a plant individual). The ratio of staminate flowers number/ umbellule number is given for each individual. A. C.H. Li 1122 (NAS). B. H.M. Li & Y.S. Zhang 1151 (NAS).
FIGURE. Individuals in two Populations of Sanicula orthacantha var. brevispina from China, Sichuan, Emei Shan, showing the variation in plant size and rhizome character (each line represents a population). A. C.H. Li 1122 (NAS). B. H.M. Li & Y.S. Zhang 1151 (NAS). in Taxonomic studies on the genus Sanicula (Apiaceae) from China ( ): The clarification of some morphological distinction between S. orthacantha var. orthacantha and S. orthacantha var. brevispina, with the reduction of S. petagnioides to the synonymy of the former, and S. orthacantha var. stolonifera to
FIGURE. Individuals in two Populations of Sanicula orthacantha var. brevispina from China, Sichuan, Emei Shan, showing the variation in plant size and rhizome character (each line represents a population). A. C.H. Li 1122 (NAS). B. H.M. Li & Y.S. Zhang 1151 (NAS).
FIGURE. Cauline Leaves of Sanicula orthacantha var. brevispina from China, Sichuan, Emei Shan, showing the size and shape of leaves within and between populations (each line represents a plant individual). A. C.H. Li 1122 (NAS). B. H.M. Li & Y.S. Zhang 1151 (NAS). in Taxonomic studies on the genus Sanicula (Apiaceae) from China ( ): The clarification of some morphological distinction between S. orthacantha var. orthacantha and S. orthacantha var. brevispina, with the reduction of S. petagnioides to the synonymy of the former, and S. orthacantha var. stolonifera to
FIGURE. Cauline Leaves of Sanicula orthacantha var. brevispina from China, Sichuan, Emei Shan, showing the size and shape of leaves within and between populations (each line represents a plant individual). A. C.H. Li 1122 (NAS). B. H.M. Li & Y.S. Zhang 1151 (NAS).
Data from: Using a reference population yardstick to calibrate and compare genetic diversity reported in different studies: an example from the brown bear.
In species with large geographic ranges, genetic diversity of different populations may be well studied, but differences in loci and sample sizes can make the results of different studies difficult to compare. Yet, such comparisons are important for assessing the status of populations of conservation concern. We propose a simple approach of using a single well-studied reference population as a "yardstick" to calibrate results of different studies to the same scale, enabling comparisons. We use a well-studied large carnivore, the brown bear (Ursus arctos), as a case study to demonstrate the approach. As a reference population, we genotyped 513 brown bears from Slovenia using 20 polymorphic microsatellite loci. We used this dataset to calibrate and compare heterozygosity and allelic richness for 30 brown bear populations from 10 different studies across the global distribution of the species. The simplicity of the reference population approach makes it useful for other species, enabling comparisons of genetic diversity estimates between previously incompatible studies and improving our understanding of how genetic diversity is distributed along a species range.
FIGURE. Map of specimens collected for the phylogenetic analysis in this study, excluding Tulipa iliensis and T. altaica, which both lacked GPS information. Populations of the new species T. toktogulica are labelled in order of discovery. in Tulipa toktogulica (Liliaceae), a cryptic, endangered new species from the western Tien-Shan, Kyrgyzstan
FIGURE. Map of specimens collected for the phylogenetic analysis in this study, excluding Tulipa iliensis and T. altaica, which both lacked GPS information. Populations of the new species T. toktogulica are labelled in order of discovery.
Dataset for: Factors associated with self-reported diagnosed asthma in urban and rural Malawi: observations from a population-based study of 3 non-communicable diseases
<p>This dataset was used in analyses reported on the in paper with the same title, published in PLOS Global Health.</p>
Attitudes toward artificial intelligence and robots in healthcare in the general population: a qualitative study
<p>It is an extract of the transcripts of in-depth interviews used for the preparation of the paper titled "The perception of facilitators and barriers to the use of e-health solutions in Poland: a qualitative study"</p> <p>This research was funded in whole by the National Centre of Science, Poland within the project titled "Determinanty akceptacji i gotowości wykorzystania aplikacji e-zdrowia i technologii Zdrowia 4.0 w polskim społeczeństwie" (Grant No 2021/43/B/NZ7/02140). </p> <p>For the purpose of Open Access, the author has applied a CC-BY public copyright license to any Author Accepted Manuscript (AAM) version arising from this submission.</p>
FIGURE 5 in Recommendations For Monitoring Avian Populations With Point Counts: A Case Study In Southeastern Brazil
FIGURE 5: Monthly counts of rare (sightings ≤ 5 for the entire year) species comparing endemic and non-endemic species show that these rare species may be seen in any month of the year. Months are separated by dry and wet seasons.
FIGURE 4 in Recommendations For Monitoring Avian Populations With Point Counts: A Case Study In Southeastern Brazil
FIGURE 4: Comparisons of species richness (A) and abundance (C) by time of day (morning – AM, and afternoon – PM), and separated by endemic and nonendemic species richness (B) and abundance (D) as the difference between AM and PM during 2006 show that more species and individuals were recorded on morning counts. Months begin in April to clearly separate the dry from the wet season. Error bars represent 95% confidence interval.
Small craters population as a useful geological investigative tool: Apollo 17 region as a case study - Craters Data
<p>Crater coordinates for areas under investigation. Unit names ref. to paper.</p> <p>Data format: Lat,Lon,Diam_km,Diam_m and Area in Km^2</p>
Power study results files for manuscript "Testing pleiotropy vs. separate QTL in multiparental populations"
<p>Results files for power study in manuscript "Testing pleiotropy vs. separate QTL in multiparental populations" by F Boehm, E Chesler, B Yandell, and K Broman.</p>
Dataset for article "Prevalence of Depressive Symptoms Among the US Population During COVID-19 (2021-2022): A Study Using the Goodville App"
<p>This dataset contains PHQ-8 data obtained using Goodville app. The dataset was used for preparing research article "Prevalence of Depressive Symptoms Among the US Population During COVID-19 (2021-2022): A Study Using the Goodville App". The first page of excel table includes all US PHQ-8 data. The second page includes only valid PHQ-8 patterns after Rasch analysis. </p>
Data for Storeria dekayi population estimation study
Open the record for dataset details and reuse information.
FIGURE 6 in Micromorphological studies of leaf epidermal features in populations of maples (Acer L.) from Iran
FIGURE 6. Hierarchical clustering of the studied taxa based on the results of Multivariate mixed data analysis under Gower similarity index.
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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.