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133
datasets available to search
ShareScore release 0.9.0
Dataset results
133 results for “long-term experiment”
Data from: Synonymous genetic variation in natural isolates of Escherichia coli does not predict where synonymous substitutions occur in a long-term experiment
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Data from: Large chromosomal rearrangements during a long-term evolution experiment with Escherichia coli
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Data from: Adaptation, clonal interference, and frequency-dependent interactions in a long-term evolution experiment with Escherichia coli
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Data from: Biodiversity-ecosystem functioning relationships in a long-term non-weeded field experiment
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Data from: Long-term and trans-generational effects of neonatal experience on sheep behaviour
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Data from: Ecological and evolutionary dynamics of coexisting lineages during a long-term experiment with E. coli
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Data from: Sustained fitness gains and variability in fitness trajectories in the long-term evolution experiment with Escherichia coli
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IS-mediated mutations both promote and constrain evolvability during a long-term experiment with bacteria
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Data from: Plant, soil and microbial controls on grassland diversity restoration: a long-term, multi-site mesocosm experiment
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Spontaneous intake of essential oils after a negative postnatal experience has long-term effects on blood transcriptome in chickens
GEO Series GSE102358. Gallus gallus. 24 samples. Type: Expression profiling by array.
Cattle and wild vertebrate habitat use in a long-term exclosure experiment
<p>1. Cattle and other livestock graze more than a quarter of the world's terrestrial area and are widely regarded to be drivers of global biodiversity declines. Studies often compare the effects of livestock presence/absence but, to our knowledge, no studies have tested for interactive effects between large wild herbivores and livestock at varying stocking rates on small-bodied wild vertebrates.</p> <p>2. We investigated the effects of cattle stocking rates (none/moderate/high) on the diversity of wildlife 0.05-1000 kg using camera traps at a long-term exclosure experiment within a semi-arid savanna ecosystem in central Kenya. In addition, by selectively excluding wild 'mesoherbivores' (50-1000 kg) and 'megaherbivores' (>1000 kg; elephant and giraffe), we tested whether the presence of these two wild herbivore guilds (collectively, 'larger wild herbivores') mediates the effect of cattle stocking rate on habitat use and diversity of 'smaller wildlife' (mammals ranging between 10-70 cm shoulder height and birds).</p> <p>3. Our results show that cattle enhance alpha diversity of smaller wildlife (with or without larger wild herbivore presence) and of all wildlife 0.05-1000 kg (with or without megaherbivore presence), by altering vegetation structure. However, for smaller wildlife, this effect is less pronounced in the presence of larger wild herbivores, which also shorten grass. In the absence of cattle, mesoherbivore-accessible sites showed higher alpha diversity of smaller wildlife than sites excluding mesoherbivores.</p> <p>4. Smaller wildlife habitat use was increased by high-cattle-stocking rates and wild mesoherbivores more in the presence of the other.</p> <p>5. Synthesis and applications. Our findings imply that grazing, whether by livestock or wildlife, can enhance local savanna wildlife diversity. The biodiversity benefits of localised increases in herbivory are likely to be due to shortened grass and associated visibility improvements (for predator-avoidance/foraging). This suggests that land managers can increase local biodiversity by shortening grass, with wild or domestic herbivores (or both), at least in patches within a taller-grass matrix.</p>
Data from: Mutator genomes decay, despite sustained fitness gains, in a long-term experiment with bacteria
Understanding the extreme variation among bacterial genomes remains an unsolved challenge in evolutionary biology, despite long-standing debate about the relative importance of natural selection, mutation, and random drift. A potentially important confounding factor is the variation in mutation rates between lineages and over evolutionary history, which has been documented in several species. Mutation accumulation experiments have shown that hypermutability can erode genomes over short timescales. These results, however, were obtained under conditions of extremely weak selection, casting doubt on their general relevance. Here, we circumvent this limitation by analyzing genomes from mutator populations that arose during a long-term experiment with Escherichia coli, in which populations have been adaptively evolving for >50,000 generations. We develop an analytical framework to quantify the relative contributions of mutation and selection in shaping genomic characteristics, and we validate it using genomes evolved under regimes of high mutation rates with weak selection (mutation accumulation experiments) and low mutation rates with strong selection (natural isolates). Our results show that, despite sustained adaptive evolution in the long-term experiment, the signature of selection is much weaker than that of mutational biases in mutator genomes. This finding suggests that relatively brief periods of hypermutability can play an outsized role in shaping extant bacterial genomes. Overall, these results highlight the importance of genomic draft, in which strong linkage limits the ability of selection to purge deleterious mutations. These insights are also relevant to other biological systems evolving under strong linkage and high mutation rates, including viruses and cancer cells.
ARTEMIS project - Long-term field experiment (LTE) dataset for crop modelling
<p>The spreadsheets aim at collecting general information and specific data (e.g., crop yield, soil properties and weather) from long-term field experiments (LTE's) that are used to calibrate and validate ARMOSA model for ARTEMIS project - WP3 task 3.1 activity. Particularly, information reported will be useful for providing an overview of the distribution of agro-ecological systems, management strategies, field measures, and weather data available, useful to run ARMOSA model under current and future climate change scenarios.</p>
Rotational Atherectomy: Long-term Results From a Single Center Experience
ClinicalTrials.gov study NCT05787886. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Retrospective Real-Life Study From One Brazilian Reference Center Assessing Long-Term Experience In The Treatment Of Adult Spasticity With AbobotulinumtoxinA
ClinicalTrials.gov study NCT04446702. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Rabeprazole Specific Clinical Experience Investigation for the Long-term Combination Therapy With Low-dose Aspirin
ClinicalTrials.gov study NCT02423187. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Symbicort Turbuhaler 30/60 Special Clinical Experience Investigation for Long-term Use for Chronic Obstructive Pulmonary Disease (COPD) Patients
ClinicalTrials.gov study NCT01713075. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Long-Term Experience and Health Effects of COVID-19
ClinicalTrials.gov study NCT04477902. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
The Impact of Elderly Simulation Experience on Aging Knowledge, Attitudes, Empathy, Communication Skills and Learning Satisfaction for Facility Care- Workers in Long-term Care Institutions : An Action
ClinicalTrials.gov study NCT07160907. IPD Sharing: NO. Countries: 1. Publications: 0.
Long-term Follow-up of Living Liver Donors: A Single-center Experience
ClinicalTrials.gov study NCT04814290. IPD Sharing: UNDECIDED. Countries: 0. Publications: 0.
ScienceDex guides
Understand access before you commit
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.