Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
885
datasets available to search
ShareScore release 0.9.0
Dataset results
885 results for “data strategy”
Data from: Stay or go? Changing breeding conditions affect sexual difference in colony attendance strategies of Atlantic puffins Fratercula arctica
Open the record for dataset details and reuse information.
Data from: No evidence that life history strategies shape within-body mosaics of ageing
Open the record for dataset details and reuse information.
Data from: Snowmelt and laying date shape the parental care strategy of a high-Arctic shorebird
Open the record for dataset details and reuse information.
Data from: Energy acquisition and allocation strategies in scleractinian corals: Insights from intraspecific trait variability
Open the record for dataset details and reuse information.
Data for: The association between personalities, alternative breeding strategies, and reproductive success in dunnocks
Open the record for dataset details and reuse information.
Data from: Ruderals naturalize, competitors invade: varying roles of plant adaptive strategies along the invasion continuum
Open the record for dataset details and reuse information.
Data for: Does migration distance influence intra-individual variation in migratory behaviour in a seabird species with diverse migration strategies?
<p>GPS tracking data from adult lesser black-backed gulls (<em>L. fuscus) </em>with 2 – 7 years of tracking data per individual from several colonies in the Netherlands, Belgium and the UK. This data has gone through initial cleaning to remove faulty GPS locations was combined with meta data from colonies to create a single .RDS file. </p> <p>Result for the manuscript "High repeatability in migratory behaviours in a generalist seabird regardless of migration strategy" can be obtained from this data using the R scripts at https://github.com/jbrow247/LBBG_MigrationPlasticity_Pub. </p>
Data from: Longevity, body dimension and reproductive mode drive differences in aquatic versus terrestrial life history strategies
<p>1. Aquatic and terrestrial environments display stark differences in key environmental factors and phylogenetic composition but their consequences for the evolution of species' life history strategies remain poorly understood.</p> <p>2. Here, we examine whether and how life history strategies vary between terrestrial and aquatic species. We use demographic information for 685 terrestrial and 122 aquatic animal and plant species to estimate key life history traits. We then use phylogenetically corrected least squares regression to explore potential differences in trade-offs between life history traits between both environments. We contrast life history strategies of aquatic vs. terrestrial species in a principal component analysis while accounting for body dimensions and phylogenetic relationships.</p> <p>3. Our results show that the same trade-offs structure terrestrial and aquatic life histories, resulting in two dominant axes of variation that describe species' pace-of-life and reproductive strategies. Terrestrial plants display a large diversity of strategies, including the longest-lived species in this study. Aquatic animals exhibit higher reproductive frequency than terrestrial animals. When correcting for body size, mobile and sessile terrestrial organisms show slower paces of life than aquatic ones.</p> <p>4. Aquatic and terrestrial species are ruled by the same life history trade-offs, but have evolved different strategies, likely due to distinct environmental selective pressures. Such contrasting life history strategies have important consequences for the conservation and management of aquatic and terrestrial species.</p>
Data from: Geographic patterns in colonial reproductive strategy in Myrmecina nipponica: links between biogeography and a key polymorphism in ants
<p>The ability to express different phenotypes can help define species distributions by allowing access to, and exploitation of, new environments. Social insects employ two markedly different reproductive strategies with contrasting cost/benefit characteristics: independent colony foundation (ICF), which is associated with high dispersal range and high risk, and dependent colony foundation (DCF), characterized by low risk but low dispersal. The ant <i>Myrmecina nipponica</i> employs both of these strategies, with the frequency of each apparently varying between populations. We combine molecular data with data on reproductive strategy from different populations of this species throughout Japan to explore how this polymorphism is linked to environmental factors and if this relationship can help explain the current and historical biogeography of this species. Reproductive strategy exhibited a strong geographic pattern, with ICF predominant in southern populations and DCF more common in northern and southern highland populations. Molecular analyses clearly divided populations into broad geographic regions, with the southern-lowland populations basal to (southern-highland (+ northern)) populations. Intra-population polymorphism in colony founding strategy was widespread, and polymorphism was reconstructed as the likely ancestral state. The frequency of different strategies was linked with climate, with DCF more common in colder areas. A recent inferred origin to the northern lineage suggests that colonization of northern Japan was a rapid event coincident with warming at the end of the last glacial maxima, likely facilitated by the cold-adaptive advantages of DCF. We discuss how such polymorphisms could help explain the biogeography of this and other social insects.</p>
Data from: The diversity of post-fire regeneration strategies in the cerrado ground layer
<p>1. Disentangling species strategies that confer resilience to natural disturbances is key to conserving and restoring savanna ecosystems. Fire is a recurrent disturbance in savannas, and savanna vegetation is highly adapted to, and often dependent on fire. However, although the woody component of tropical savannas is well studied, we still do not understand how ground-layer plant communities respond to fire, limiting conservation and management actions.</p> <p>2. We investigated the effects of prescribed fire on community structure and composition, and evaluated which traits are involved in plant community regeneration after fire in the cerrado ground layer. We assessed traits related to species persistence and colonization capacity after fire, including resprouter type, underground structure, fire-induced flowering, regeneration strategy and growth form. We searched for functional groups related to response to fire, to shed light on the main strategies of post-fire recovery among species in the ground layer.</p> <p>3. Fire changed ground-layer community structure and composition in the short term, leading to greater plant species richness, population densities, and increasing bare soil, compared with unburned communities. Eight months after fire, species abundance did not differ from pre-disturbance values for 86% of the species, demonstrating the resilience of this layer to fire. Only one ruderal species was disadvantaged by fire and 13% of the species benefited. Rapid recovery of soil cover by native vegetation in burned areas was driven by species with high capacity to resprout and spread vegetatively. Recovery of the savanna ground-layer community, as a whole, resulted from a combination of different species traits. We summarized these traits into five large groups, encompassing key strategies involved in ground layer regeneration after fire.</p> <p>Synthesis: Fire dramatically changes the ground layer of savanna vegetation in the short term, but the system is highly resilient, quickly recovering the pre-fire state. Recovery involves different strategies, which we categorized into five functional groups of plant species: grasses, seeders, bloomers, undergrounders, and resprouters. Knowledge of these diverse strategies should be used as a tool to assess conservation and restoration status of fire-resilient ecosystems in the cerrado.</p>
Data from: Juvenile social dynamics reflect adult reproductive strategies in bottlenose dolphins
The juvenile period is a challenging life history stage, especially in species with a high degree of fission-fusion dynamics, such as bottlenose dolphins, where maternal protection is virtually absent. Here, we examined how juvenile male and female bottlenose dolphins navigate this vulnerable period. Specifically, we examined their grouping patterns, activity budget, network dynamics, and social associations in the absence of adults. We found that juveniles live in highly dynamic groups, with group composition changing every 10 minutes on average. Groups were generally segregated by sex, and segregation was driven by same-sex preference rather than opposite-sex avoidance. Juveniles formed strong associations with select individuals, especially kin and same-sex partners, and both sexes formed cliques with their preferred partners. Sex-specific strategies in the juvenile period reflected adult reproductive strategies, in which the exploration of potential social partners may be more important for males (which form long-term alliances in adulthood) than females (which preferentially associate with kin in adulthood). Females spent more time alone and were more focused on foraging than males, but still formed close same-sex associations, especially with kin. Males cast a wider social net than females, with strong same-sex associations and many male associates. Males engaged in more affiliative behavior than females. These results are consistent with the social bonds and skills hypothesis and suggest that delayed sexual maturity in species with relational social complexity may allow individuals to assess potential associates and explore a complex social landscape without the risks associated with sexual maturity (e.g. adult reproductive competition; inbreeding).
Data from: Six co-occurring conifer species in northern Idaho exhibit a continuum of hydraulic strategies during an extreme drought year
As growing seasons in the northwestern USA lengthen, on track with climate predictions, the mixed conifer forests that dominate this region will experience extended seasonal drought conditions. The year of 2015, which had the most extreme drought for the area on record, offered a potential analog of future conditions. During this period, we measured the daily courses of water potential and gas exchange as well as the hydraulic conductivity and vulnerability to embolism of six dominant native conifer species, Abies grandis, Larix occidentalis, Pinus ponderosa, Pinus monticola, Pseudotsuga menziesii, and Thuja occidentalis, to determine their responses to 5 months of record low precipitation. The deep ash-capped soils of the region allowed gas exchange to continue without significant evidence of water stress for almost two months after the last rainfall event. Midday water potentials never fell below -2.2 MPa in the evergreen species and -2.7 MPa in the one deciduous species. Branch xylem was resistant to embolism, with P50 values ranging from -3.3 to -7.0 MPa. Root xylem, however, was more vulnerable, with P50 values from -1.3 to -4.6 MPa. With predawn water potentials as low as -1.3 MPa, the two Pinus species likely experienced declines in root hydraulic conductivity. Stomatal conductance of all six species was significantly responsive to vapor pressure only in the dry months (August-October), with no response evident in the wet months (June-July). While there were similarities among species, they exhibited a continuum of isohydry and safety margins. Despite the severity of this drought, all species were able to continue photosynthesis until mid-October, likely due to the mediating effects of the meter-deep, ash-capped silty-loam soils with large water storage capacity. Areas with these soil types, which are characteristic of much of the Northwest USA, could serve as refugia under drier and warmer future conditions.
Data from: Resource acquisition strategies facilitate Gilbertiodendron dewevrei monodominance in African lowland forests
1. Tropical forests are hyperdiverse, yet extensive areas of monodominant forest occur in the tropics worldwide. Most long-lived and persistent monodominant tree species form ectomycorrhizal fungi symbioses, allowing them to obtain nutrients directly from soil organic matter. This might promote monodominance by reducing nutrient availability to co-occurring species, the majority of which form associations with arbuscular mycorrhizal fungi. 2. Gilbertiodendron dewevrei forest is the most widespread monodominant forest in tropical Africa. Its distribution appears determined in part by moisture availability, but its monodominance is not thought to be driven by its fungal partner or soil fertility. 3. Here we compare soil fertility of twenty G. dewevrei stands to mixed forest from three sites across an 8,400 km2 region of the Central African Republic and the Republic of Congo. In contrast to previous studies, we find monodominant G. dewevrei stands associated with infertile soils, as base cations (calcium, magnesium, total exchangeable bases) and extractable manganese are extremely low, and significantly lower in soils under G. dewevrei forest compared to mixed forest. Further, and consistent with ectomycorrhizal forests globally, soil carbon to nitrogen and carbon to phosphorus ratios are significantly higher in G. dewevrei stands than in mixed forest stands, providing evidence in support of direct acquisition of nitrogen and phosphorus from soil organic matter by ectomycorrhizal fungi. 4. Gilbertiodendron dewevrei recruits from the seedling bank, with its large seedlings surviving in high densities for over a decade. We tested whether light plasticity could facilitate monodominance by growing seedlings of G. dewevrei under controlled light conditions. We found that its seedlings grow well under a wide range of irradiance levels and conclude that this plasticity affords a competitive advantage. 5. Synthesis: We reframe the discussion of factors contributing to monodominance of G. dewevrei into one of resource acquisition and use efficiency. In particular, G. dewevrei is associated with moist and infertile soils and competes well under a variety of light conditions. Our data is consistent with a model where root associations with ectomycorrhizal fungi drive monodominance through the direct acquisition of nutrients from soil organic matter, promoting nutrient limitation of co-occurring species.
Data from: Cis-regulatory differences in isoform expression associate with life history strategy variation in Atlantic salmon
<p><span><span><span><span><span><span><span><span><span><span><span><b>A major goal in biology is to understand how evolution shapes variation in individual life histories. Genome-wide association studies have been successful in uncovering genome regions linked with traits underlying life history variation in a range of species. However, lack of functional studies of the discovered genotype-phenotype associations severely restrains our understanding how alternative life history traits evolved and are mediated at the molecular level. Here, we report a <i>cis</i>-regulatory mechanism whereby expression of alternative isoforms of the transcription co-factor <i>vestigial-like 3</i> (<i>vgll3</i>) associate with variation in a key life history trait, age at maturity, in Atlantic salmon (<i>Salmo salar</i>). Using a common-garden experiment, we first show that <i>vgll3 </i>genotype associates with puberty timing in one-year-old salmon males. By way of temporal sampling of <i>vgll3 </i>expression in ten tissues across the first year of salmon development, we identify a pubertal transition in <i>vgll3</i> expression where maturation coincided with a 66% reduction in testicular <i>vgll3</i> expression. The <i>late </i>maturation allele was not only associated with a tendency to delay puberty, but also with expression of a rare transcript isoform of <i>vgll3</i> pre-puberty. By comparing absolute <i>vgll3 </i>mRNA copies in heterozygotes we show that the expression difference between the <i>early</i>and <i>late</i> maturity alleles is largely <i>cis</i>-regulatory. We propose a model whereby expression of a rare isoform from the <i>late </i>allele shifts the liability of its carriers towards delaying puberty. These results exemplify the potential importance of regulatory differences as a mechanism for the evolution of life history traits.</b></span></span></span></span></span></span></span></span></span></span></span></p>
Data from: Nest attendance by tropical and temperate passerine birds: same constancy, different strategy
1. Parental care in birds varies among species and geographic regions. Incubation behavior influences embryonic development rate and varies substantially among species. 2. We studied attendance at the nest by videoing nests or collecting data from the literature for 112 species in north temperate and lowland tropical sites, then associated patterns of incubation on- and off-bouts with species and environmental traits. 3. Songbirds nesting at low elevations incubate their eggs for an average of 74.1% (12.9 s.d., n = 60 species) of the time in temperate regions and 71.0% (12.2 s.d., n = 52 species) in tropical regions during daylight hours, and 84.3% (8.2 s.d.) and 85.3% (6.2 s.d.), respectively, of each 24-hour cycle. 4. While these attendance percentages do not differ significantly between latitudes, our data also show that lowland tropical songbirds make fewer visits to the nest and, consequently, have longer on-bouts and off-bouts during incubation. This pattern in attendance reflects a latitudinal contrast in parental care strategy, where lowland tropical birds reduce visits to the nest by increasing on- and off-bout lengths while maintaining the same proportion of time spent incubating their eggs (constancy). 5. Similar constancy across latitude suggests that tropical and temperate birds may be similarly constrained to maintain elevated egg temperatures for normal embryo growth. 6. The different attendance strategies adopted in each region may reflect differences in ambient temperature, adult foraging time, and nest predation rate. Consistently warm ambient temperatures likely allow tropical birds to take longer off-bouts, and thereby to reduce activity around the nest, compared to temperate birds.
Data from: A new Devonian euthycarcinoid evidences the use of different respiratory strategies during the marine-to-terrestrial transition in the myriapod lineage
<p><span>Myriapods were, together with arachnids, the earliest animals to occupy terrestrial ecosystems, by at least the Silurian. The origin of myriapods and their land colonization have long remained puzzling until euthycarcinoids, an extinct group of aquatic arthropods considered amphibious, were shown to be stem group myriapods, extending the lineage to the Cambrian and evidencing a marine-to-terrestrial transition. Although possible respiratory structures comparable to the air-breathing tracheal system of myriapods are visible in several euthycarcinoids, little is known about the mechanism by which they respired. Here we describe a new euthycarcinoid from Upper Devonian alluvio-lagoonal deposits of Belgium. Synchrotron-based elemental x-ray analyses were used to extract all available information from the only known specimen. Sulfur x-ray fluorescence (XRF) mapping and spectroscopy unveil sulphate evaporation stains, spread over the entire slab, suggestive of a very shallow-water to terrestrial environment prior to burial consistent with an amphibious lifestyle. Trace metal XRF mapping reveals a pair of ventral spherical cavities or chambers on the second post-abdominal segment that do not compare to any known feature in aquatic arthropods, but might well play a part in air-breathing. Our data provide additional support for amphibious lifestyle in euthycarcinoids and show that different respiratory strategies were used during the marine-to-terrestrial transition in the myriapod lineage.</span></p>
Paper-Quake Mitigation Strategy: Experimental Raw Data
<p>Experimental Raw Data for the paper "Absorbent porous paper reveals how earthquakes could be mitigated" published in Geophysical Research Letters (GRL). DOI: <a href="https://doi.org/10.1029/2020GL090792">https://doi.org/10.1029/2020GL090792</a></p>
80 Initial Data-set Studies SMS Strategy CG
<p>Initial Data set of 80 primary studies SMS: "Empirical Strategies in Software Engineering Research: A Literature Survey", by Cathy Guevara-Vega<br> </p>
Data from: The roots of the drought: hydrology and water uptake strategies mediate forest-wide demographic response to precipitation
Drought-induced tree mortality is expected to increase globally due to climate change, with profound implications for forest composition, function and global climate feedbacks. How drought is experienced by different species is thought to depend fundamentally on where they access water vertically below ground, but this remains untracked so far due to the difficulty of measuring water availability at depths at which plants access water (few to several tens of meters), the broad temporal scales at which droughts at those depths unfold (seasonal to decadal), and the difficulty in linking these patterns to forest-wide species-specific demographic responses. We address this problem through a new eco-hydrological framework: we used a hydrological model to estimate belowground water availability by depth over a period of two decades that included a multi-year drought. Given this water availability scenario and 20yr long-records of species-specific growth patterns, we inversely estimated the relative depths at which 12 common species in the forest accessed water via a model of water-stress. Finally, we tested whether our estimates of species relative uptake depths predicted mortality in multi-year drought. The hydrological model revealed clear belowground niches as precipitation was decoupled from water availability by depth at multi-annual scale. Species partitioned the hydrological niche by diverging in their uptake depths and so in the same forest stand, different species experienced very different drought patterns, resulting in clear differences in species-specific growth. Finally, species relative water uptake depths predicted species mortality patterns after the multi-year drought. Species that our method ranked as relying on deeper water were the ones that had suffered from greater mortality, as the zone from which they access water took longer to recharge after depletion. This research changes our understanding of how hydrological niches operate for trees with a trade-off between realized growth potential and survival under drought with decadal scale return time. The eco-hydrological framework highlights the importance of species-specific below ground strategies in predicting forest response to drought. Applying this framework more broadly may help us better understand species-coexistence in diverse forest communities and improve mechanistic predictions of forests productivity and compositional change under future climate.
Data from: The influence of wind selectivity on migratory behavioral strategies
Air and water currents affect the timing and energy expenditure of many migratory animals, and therefore selection of favorable currents is important for optimal migratory performance. However, waiting for favorable currents also incurs costs. Here we conduct an optimality analysis to determine how wind selectivity affects three migratory currencies: time, energy, and risk. To describe variation in these metrics under varying degrees of selectivity, we constructed an individual-based model to simulate fall migration of passerines across eastern North America, allowing birds to use different thresholds of wind profit as the criterion for daily departure. A gradient of thresholds were tested across a range of realistic wind currents, from initiating flights only on nights when winds were directed in their preferred migratory direction (highly selective), to flying under most wind conditions (low selectivity). Our analysis indicated that relative mortality risk was lowest at intermediate selectivity; energy expended during flight was least for the most selective individuals; and of those that successfully completed migration, time spent on migration was lowest for the least selective birds. We solved for the optimal range of wind selectivity and show that this departure criterion alone can produce a tradeoff between time and energy that has been seen in many other behavioral contexts. While we solved for optima using some conditions specific to eastern North America, we show that variation in wind selectivity at departure can produce migratory behaviors that mimic the classic "time-minimizer" and "energy-minimizer" strategies developed from measurements of wild birds across multiple continents.
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.