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.
59
datasets available to search
ShareScore release 0.9.0
Dataset results
59 results for “thermal niche”
Data from: Thermal niches of wheat curl mite, Aceria tosichella (Acari: Eriophyidae): congruence between physiological and geographical distribution data
<p><strong>Filename: parm.csv</strong></p> <p>Population growth rate of the two wheat curl mite (WCM) lineages reared in different temperatures.</p> <ol> <li>lineage - mitochondrial lineage (MT-1 or MT-8)</li> <li>temp - the rearing temperature (ºC)</li> <li>n - no. of replications of the experiment</li> <li>r, r.lower, r.upper - estimated intrinsic population growth rate and its 95% confidence intervals</li> </ol> <p><strong>Filename: aceria.csv</strong></p> <p>Data on field sampling localities, WCM abundance and thermal niche suitabiity.</p> <ol> <li>julian - Julian date</li> <li>x, y - geodetic coordinates (EPSG: 2180)</li> <li>stems - no. of stems collected</li> <li>MT1, MT8- mitochondrial lineage (MT-1 or MT-8)</li> <li>TNS1, TNS8 - thermal niche suitability for lineages</li> </ol>
Data and code from: Predicting the fundamental thermal niche of ectotherms
<p>Climate warming is predicted to increase mean temperatures and thermal extremes on a global scale. Because their body temperature depends on the environmental temperature, ectotherms bear the full brunt of climate warming. Predicting the impact of climate warming on ectotherm diversity and distributions requires a framework that can translate temperature effects on ectotherm life history traits into population- and community-level outcomes. Here we present a mechanistic theoretical framework that can predict the fundamental thermal niche and climate envelope of ectotherm species based on how temperature affects the underlying life history traits. The advantage of this framework is two-fold. First, it can translate temperature effects on the phenotypic traits of individual organisms to population-level patterns observed in nature. Second, it can predict thermal niches and climate envelopes based solely on trait response data and hence completely independently of any population-level information. We find that the temperature at which the intrinsic growth rate is maximized exceeds the temperature at which abundance is maximized under density-dependent growth. As a result, the temperature at which a species will increase the fastest when rare is lower than the temperature at which it will recover from a perturbation the fastest when abundant. We test model predictions using data from a native-invasive interaction to identify the temperatures at which the invader can most easily invade the native's habitat, and the native species is most likely to resist the invader. The framework is sufficiently mechanistic to yield reliable predictions for individual species, and sufficiently broad to apply across a range of ectothermic taxa. This ability to predict the thermal niche before a species encounters a new thermal environment is essential to mitigating some of the major effects of climate change on ectotherm populations around the globe.</p>
Data from: defining the pyro-thermal niche: do seed traits, ecosystem type and phylogeny influence thermal thresholds in seeds with physical dormancy
<p>Seeds are a key pathway for plant population recovery following disturbance. To prevent germination during unsuitable conditions, most species produce dormant seeds. In fire-prone regions, physical dormancy (PY) enables seeds to germinate after fire. The thermal niche, incorporating seed dormancy and mortality temperature responses, has not been characterised for PY seeds from fire prone environments.</p> <p>We aimed to assess variation in thermal thresholds between species with PY seeds and if the pyro-thermal niche is aligned with seed mass, ecosystem type or phylogenetic relatedness.</p> <p>We collected post heat-shock germination data for 58 Australian species that produce PY seeds. We applied species-specific thermal performance curves to define three critical thresholds (DRT<sub>50, </sub>dormancy release temperature; T<sub>opt</sub>,<sub> </sub>optimum dormancy release temperature and LT<sub>50</sub>, lethal temperature), defining the pyro-thermal niche. Each species was assigned a mean seed weight and ecosystem type. We constructed a phylogeny to account for species relatedness and calculated phylogenetic signal (h<sup>2</sup>) for LT<sub>50,</sub> T<sub>opt</sub>, and<sub> </sub>DRT<sub>50</sub>.</p> <p>Seeds of <em>Pomaderris</em> (Rhamnaceae) had the highest T<sub>opt</sub> and LT<sub>50</sub>, and <em>Pomaderris bodalla</em> having the highest DRT<sub>50 </sub>of 101.3°C. Seeds from species within this family exhibited higher temperature thresholds than those from Fabaceae. Seed mass was only influential in explaining LT<sub>50 </sub>variation.</p>
Data from: Defining the pyro-thermal niche: do seed traits, ecosystem type and phylogeny influence thermal thresholds in seeds with physical dormancy
Open the record for dataset details and reuse information.
Data and code from: Predicting the fundamental thermal niche of ectotherms
Open the record for dataset details and reuse information.
Endothermy makes fishes faster but does not expand their thermal niche
<p class="MsoNoSpacing">1. Regional endothermy has evolved several times in marine fishes, and two competing hypotheses are generally proposed to explain the evolutionary drivers behind this trait: thermal niche expansion and elevated cruising speeds. Evidence to support either hypothesis is equivocal, and the ecological advantages conferred by endothermy in fishes remain debated.</p> <p class="MsoNoSpacing">2. By compiling published biologging data and collecting precise speed measurements from free-swimming fishes in the wild, we directly test whether endothermic fishes encounter broader temperature ranges, swim faster, or both. Our analyses avoid several complications associated with earlier tests of these hypotheses, as we use precise measurements of the thermal experience and speed of individual fish.</p> <p class="MsoNoSpacing">3. Phylogenetically-informed analyses of 89 studies reporting temperature ranges encountered by tagged fishes reveal that endotherms do not encounter broader temperature ranges than their ectothermic counterparts. In contrast, speed measurements from 45 individuals (16 species, of which 4 were regional endotherms) show that endothermic fishes cruise ~ 1.6 times faster than ectotherms, after accounting for the influence of body temperature and body mass on speed.</p> <p class="MsoNoSpacing">4. Our study shows that regionally endothermic fishes – those with the ability to conserve metabolically derived heat through vascular countercurrent heat exchangers and elevate the temperature of internal tissues – swim at elevated cruising speeds, although not as fast as previously thought. Contrary to previous studies of endothermy's role in thermal niche expansion, our results suggest the significance of endothermy in fishes lies in the advantages it confers to swimming performance rather than facilitating occupation of broader thermal niches. Given speed's major influence on metabolic rate, our updated speed estimates imply endotherms have lower routine energy requirements than current estimates.</p> <p class="MsoNoSpacing">5. Our findings shed light on the evolutionary drivers of regional endothermy in fishes and question the view that the trait confers resilience to climate change through broader thermal tolerance than that of ectotherms.</p>
Telemetry data from: Realized thermal niche approach eliminates temperature bias in 3 bioenergetic model estimates
<h4>Raw data for Ivanova et al paper in Ecology and Evolution</h4><p>Datafile is an .rds file.</p>
The thermal niche and phylogenetic assembly of evergreen tree metacommunities in a mid-to-upper tropical montane zone
<p>Frost and freezing temperatures have posed an obstacle to tropical woody evergreen plants over evolutionary timescales. Thus, along tropical elevation gradients, frost may influence woody plant community structure by filtering out lowland tropical clades, and allowing extra-tropical lineages to establish at higher elevations.</p> <p>Here we assess the extent to which frost influences the taxonomic and phylogenetic structure of naturally-patchy evergreen forests (locally known as <em>shola</em>) along a mid-upper montane elevation gradient in the Western Ghats, India. Specifically, we examine the role of large-scale macroclimate and factors affecting local microclimates, including <em>shola</em> patch size and distance from <em>shola</em> edge, in driving <em>shola </em>metacommunity structure. We find that the <em>shola </em>metacommunity shows phylogenetic overdispersion with elevation, with greater representation of extra-tropical lineages above 2000m, and marked turnover in taxonomic composition of <em>shola </em>woody communities near the frost-affected forest edge above 2000m, from those below 2000m. Both minimum winter temperature and patch size were equally important in determining metacommunity structure, with plots inside very large <em>sholas </em>dominated by older tropical lineages, with many endemics. Phylogenetic overdispersion in the upper montane <em>shola </em>metacommunity thus resulted from tropical lineages persisting in the interiors of large closed frost-free <em>sholas</em>, where their regeneration niche has been preserved over time.</p>
Micro and macroclimatic constraints on the activity of a vulnerable tortoise: a mechanistic approach under a thermal niche view
<p>1. Thermal constraints imposed by the environment limit the activity time of ectotherms and have been a central issue in ecophysiology. Assessing these restrictions is key to determining the vulnerability of species to changing thermal niches and developing conservation strategies. 2. We generate an explicit tortoise model of thermal constraints at both micro and macroclimate scales based on thermophysiology parameters and environmental operative temperatures during a biologically significant period. As a study model, we use a vulnerable species of gopher tortoise (Gopherus evgoodei), whose primary habitat is the tropical dry forests in northwestern Mexico. 4. Our mechanistic model is based on a monitoring of 5-years of environmental operative temperatures (Te). Here, we use the hours of activity (ha) and hours of thermal restriction (hr), calculated from the voluntary temperature range of G. evgoodei with respect to Te, to project and compare the thermal constraints across space and time. In addition, this model was projected using a pessimistic climate change scenario for 2070 (RCP 8.5). 5. The results show that the period of activity of G. evgoodei, predicted by ha and hr, is limited by the frequency and availability of Te and differs significantly throughout the year and among years. In addition, under the RCP 8.5 scenario, we predict that hr will increase considerably and exceed the critical value (3.11 hr) placing this species as highly vulnerable. 6. We discuss and compare the period of potential activity, thermoregulation strategies, and costs and benefits with other Gopherus species. Finally, we identify critical areas to develop management strategies for protecting this Mexican endemic tortoise.</p>
Physiological thermal niches, elevational ranges and thermal stress in dendrobatid frogs: an integrated approach
<p><strong>Aim: </strong>We investigated the relationship between thermal physiology, elevational distribution, and thermal stress among nine closely related dendrobatid frogs during their aquatic stage by employing an integrated approach, combining thermal physiology, environmental temperature modelling, and predictive assessments of current and future exposure to thermal variation.</p> <p><strong>Location:</strong> Ecuador</p> <p><strong>Taxon:</strong> Amphibians; Anura, Dendrobatidae, Epipedobates, Hyloxalus</p> <p><strong>Methods:</strong> We determined the Thermal Performance Curves of larval growth (TPCs) for each species and modelled the thermal variation in contrasting aquatic larval environments for both present and future times. This allowed us to estimate the expected elevational distributions and forecast periods of exposure to stressful temperatures that inhibit larval growth due to elevation and global warming.</p> <p><strong>Results:</strong> We found significant correlations between optimum temperature (Topt), 50 % maximum performance temperature (maxB50), 50% minimum performance temperature (minB50), and cold resistance (survival at 9 ºC) with the current elevational distributions. However, thermal physiology predicted lower than observed distributions for high-elevation dendrobatids and higher than observed maximum elevations for lowland species. Nonetheless, our models predicted that low thermal variability habitats (i.e. streams and deep permanent ponds) can buffer the future increase in temperatures for all taxa, even when considering the most extreme scenario. In contrast, all species within high thermal variation habitats (open forest temporary ponds) are expected to experience stressful temperatures under present conditions.</p> <p><strong>Main Conclusions:</strong> The findings indicate that thermal physiology may not be a limiting factor for dendrobatid frog species' ranges in this equatorial mountain gradient. Highland species may need to adapt to suboptimal performance, while some lowland species could occupy higher elevations. This study emphasizes the importance of habitat buffering to mitigate thermal stress in the face of climate change for amphibians in tropical mountains.</p>
Data and code from: Thermal niche and habitat use by co-occurring lake trout (Salvelinus namaycush) and brook trout (S. fontinalis) in stratified lakes
<p>Realized thermal niche and habitat use are two conceptualizations of fish habitat based on organismal performance or lake-specific ecology, respectively. Both habitat types were compared for lake trout (<em>Salvelinus</em> <em>namaycush</em>) and brook trout (<em>S</em>. <em>fontinalis</em>) co-occurring in four large (> 500 ha) oligotrophic lakes. Lakes were partitioned into two morphological categories based on possession of a central or non-central deep basin with corresponding differences in adjoining shelf areas. Lake asymmetry in basin location has been shown to strongly influence food web connections based on isolation of basins from shelf areas.</p> <p>Generally, overlap between both habitat types occurred in several comparisons with lake trout, suggesting that thermal habitat is a reasonable proxy for habitat use boundaries though not a full replacement for insights gained from habitat use models.</p> <p>For brook trout, overlap was not as consistent, especially for lakes with non-central basins. In central basin lakes, there were closer proximity between the two species and overlap in both thermal niche and habitat use models. There was very limited overlap of either habitat type in lakes with non-central basins. Further, there were no shared areas of interspecific overlap between thermal niche and habitat use in non-central basins pointing to additional complexity governing habitat partitioning between lake trout and brook trout in these types of lakes. The shelf area effect on spatial structure of habitat, and likely food web connections, can occur in lakes regardless of basin centrality so long as shelf areas are large. In this lake set, lakes were sufficiently large to observe this phenomenon.</p>
Data for: Beyond latitude: Temperature, productivity, and thermal niche conservatism drive global body size variation in Odonata
<p><strong><span>Aim</span></strong><span>: </span><span>So far, </span><span>latitudinal body size-clines have been primarily discussed in the context of thermoregulation, sensu Bergmann. However, body size patterns are ambiguous in ectotherms and this heterogeneity remains poorly understood. We tested whether Bergmann's rule and the resource availability rule which states that energetic requirements determine species' body size, apply to damselflies and dragonflies (Odonata). Furthermore, we hypothesised that the contrasting effects of thermoregulation and resource availability (e.g. productivity) can obscure the overall gradient in body size variation.</span></p> <p><span><strong>Location</strong>: </span><span>Global</span></p> <p><span><strong>Time</strong> <strong>period</strong>: </span><span>Contemporary</span></p> <p><span><strong>Major</strong> <strong>taxa</strong> <strong>studied</strong>: </span><span>Odonata</span></p> <p><span><strong>Methods</strong>:</span><span> Using data for 43% of all odonate species described so far, we tested our hypotheses in phylogenetically and spatially comparative analyses at assemblage and species level. </span><span>For the distribution data, we integrated expert range maps and ecoregional ranges based on all available occurrence records. To distinguish between long-term versus evolutionarily recent responses of environmental drivers in body size, we constructed a phylogenetically informed classification of all odonate species and decomposed the body size into its phylogenetic and specific component for our subset of species.</span></p> <p><span><strong>Results</strong>: </span><span>We documented a weak positive relationship between body length and latitude but found strong and contrasting effects for temperature between dragonflies and damselflies and consistent positive effects for productivity that explained 35%–57% of body size variation. Moreover, we showed a strong phylogenetic signal in sized-based thermoregulation that shaped the distribution of dragonflies, but not of damselflies.</span></p> <p><span><strong>Main</strong> <strong>conclusion</strong>: </span><span>We concluded that temperature, productivity, and conservatism in size-based thermoregulation synergistically determine the distribution of ectotherms, while the taxon-specific importance of these factors can lead to contrasting results and weak latitude–size relationships. Our results reinforce the importance of body size as a determinant of species distributions and responses to climate change.</span></p>
Linking temperature dependence in fitness effects of mutations to thermal niche adaptation
<p>Fitness effects of mutations may generally depend on temperature that influences all rate-limiting biophysical and biochemical processes. Earlier studies suggested that high temperatures may increase the availability of beneficial mutations ("more beneficial mutations"), or allow beneficial mutations to show stronger fitness effects ("stronger beneficial mutation effects"). The "more beneficial mutations" scenario would inevitably be associated with increased proportion of conditionally beneficial mutations at higher temperatures. This in turn predicts that populations in warm environments show faster evolutionary adaptation but suffer fitness loss when faced with cold conditions, and those evolving in cold environments become thermal-niche generalists ("hotter is narrower"). Under the "stronger beneficial mutation effects" scenario, populations evolving in warm environments would show faster adaptation without fitness costs in cold environments, leading to a "hotter is (universally) better" pattern in thermal niche adaptation. We tested predictions of the two competing hypotheses using an experimental evolution study in which populations of two model bacterial species, <em>Escherichia coli</em> and <em>Pseudomonas fluorescens</em>, evolved for 2,400 generations at three experimental temperatures. Results of reciprocal transplant experiments with our <em>P. fluorescens</em> populations were largely consistent with the "hotter is narrower" prediction. Results from the <em>E. coli</em> populations clearly suggested stronger beneficial mutation effects at higher assay temperatures, but failed to detect faster adaptation in populations evolving in warmer experimental environments (presumably because of limitation in the supply of genetic variation). Our results suggest that the influence of temperature on mutational effects may provide insight into the patterns of thermal niche adaptation and population diversification across thermal conditions.</p>
Colonizing polar environments: thermal niche evolution in Collembola
<p>Temperature is a primary driver in defining the ecophysiological activity and performance of ectotherms. Thus, thermal tolerance limits have a profound effect in determining geographic ranges. In regions with extreme cold temperatures, lower thermal limits of species are a key physiological trait for survival. Moreover, thermal niche breadth also plays an important role in allowing organisms to withstand climatic variability and confers species with broader potential to establish in new regions. Here we study the evolution of thermal tolerance limits among Collembola (Arthropoda) and explore how they are affected by the colonization of polar environments. In addition, we test the hypothesis that globally invasive species are more eurythermal than non-invasive ones. Critical thermal limits (CT<sub>min</sub> and CT<sub>max</sub>), classic measurements of thermal tolerance, were compiled from the literature and complemented with experimental assays for springtail species. Genetic data of the mitochondrial gene cytochrome oxidase subunit 1 (COI) was used to assemble a phylogeny. Our results show that polar springtails have lower CT<sub>min</sub> and lower CT<sub>max</sub> compared to species from temperate and tropical regions, consistent with the Polar pressure hypothesis. We found no phylogenetic signal for CT<sub>max</sub>, but low values of phylogenetic signal for CT<sub>min</sub>. Globally invasive species do not have significantly broader thermal tolerance breadth (CT<sub>range</sub>) than non-invasive ones, thus not supporting the predictions of the Eurythermality hypothesis. We conclude that polar springtails have evolved their thermal niches in order to adapt to extremely cold environments, which has led to decreasing both upper and lower thermal tolerance limits.</p>
Data from: Detection of evolutionary conserved and accelerated genomic regions related to adaptation to thermal niches in Anolis lizards
Open the record for dataset details and reuse information.
Colonizing polar environments: thermal niche evolution in Collembola
Open the record for dataset details and reuse information.
Data from: What doesn’t kill you makes you stronger: Fear of predation widens the thermal niche of the harmful algal bloom species Phaeocystis globosa
Open the record for dataset details and reuse information.
The thermal niche and phylogenetic assembly of evergreen tree metacommunities in a mid-to-upper tropical montane zone
Open the record for dataset details and reuse information.
Data from: Effects of hypoxia and ocean acidification on the upper thermal niche boundaries of coral reef fishes
Open the record for dataset details and reuse information.
Data from: Physiological thermal niches, elevational ranges and thermal stress in dendrobatid frogs: An integrated approach
Open the record for dataset details and reuse information.
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.