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.
20
datasets available to search
ShareScore release 0.9.0
Dataset results
20 results for “historical associations”
Figure 4 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 4. Historical sample of Acanthobdella peledina Grube, 1851 (lot EEZM 387 "Onega Lake. N. Livanow, 1902"). These specimens are the only preserved part of Livanow's general sample that was used for preparation of the classical monograph on this species (Livanow 1906). (a) Anterior part of the incomplete specimen and trace of its lost posterior part by albumin-gelatin gel. (b-d) Three complete specimens. Scale bar = 2.5 mm. Photo: T. A. Eliseeva and A. V. Bespyatykh.
Figure 3 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 3. Extract from the Systematic Catalogue of Collections and Preparations of Invertebrates of the Zootomy Cabinet Museum of the Imperial Kazan University (Meyer 1915). (a) Title page. (b) Selected entries [In Russian] for the specimens under discussion with our English translations and remarks (red letters). Photos: T. A. Eliseeva and A. V. Bespyatykh.
Figure 2 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 2. Collection vials with selected samples from the historical Hirudinea collection (EEZM): (a) Acanthobdella peledina Grube, 1851 (lot EEZM 387 "Onega Lake. N. Livanow, 1902"); (b) Hirudo medicinalis Linnaeus, 1758 (lot EEZM 406-407 "Kazan. E. Meyer, 1891"); and (c) Glossiphonia grubei (Lukin & Epshtein, 1959) (lot EEZM 397 "Lake Baikal (Maloe More [Strait]). V. Garjaew, 1899"). Photos: T. A. Eliseeva and A. V. Bespyatykh.
Figure 1 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 1. Cabinet with the historical Hirudinea collection in the EEZM – Edward Eversman Zoology Museum and Herbarium, Kazan (Volga Region) Federal University (formerly Zootomy Cabinet Museum of the Imperial Kazan University), prepared by Nikolaj A. Livanow and Eduard A. Meyer. The red numbers indicate exposition vials with samples of Acanthobdella peledina Grube, 1851 (1), Hirudo medicinalis Linnaeus, 1758 (2), and Glossiphonia grubei (Lukin & Epshtein, 1959) (3). Photo: T. A. Eliseeva and A. V. Bespyatykh.
Wood Buffalo Environmental Association (WBEA) Historical Monitoring Data used in "Passive Tracer Modelling at Super-Resolution with WRF-ARW to Assess Mass-Balance Schemes"
<p>Wood Buffalo Environmental Association (WBEA) Historical Monitoring Data from two monitoring stations Bertha Ganter – Fort McKay and Barge Landing for 20 August 2013 to 2 September 2013. This data was used in "Passive Tracer Modelling at Super-Resolution with WRF-ARW to Assess Mass-Balance Schemes" (Fathi et al., 2022 - egusphere-2022-1125) for model output and observational data comparisons. The same data can be accessed and downloaded from "<a href="https://wbea.org/historical-monitoring-data/">https://wbea.org/historical-monitoring-data/</a>".</p>
Code for: A century of wild bee sampling: historical data and neural network analysis reveal ecological traits associated with species loss
Open the record for dataset details and reuse information.
Data from: Evidence for contemporary and historical gene flow between guppy populations in different watersheds, with a test for associations with adaptive traits
In dendritic river systems, gene flow is expected to occur primarily within watersheds. Yet, rare cross‐watershed transfers can also occur, whether mediated by (often historical) geological events or (often contemporary) human activities. We explored these events and their potential evolutionary consequences by analyzing patterns of neutral genetic variation (microsatellites) and adaptive phenotypic variation (male color) in wild guppies (Poecilia reticulata) distributed across two watersheds in northern Trinidad. We found the expected signatures of within‐watershed gene flow; yet we also inferred at least two instances of cross‐watershed gene flow—one in the upstream reaches and one further downstream. The upstream cross‐watershed event appears to be very recent (41 ± 13 years), suggesting dispersal via recent flooding or undocumented human‐mediated transport. The downstream cross‐watershed event appears to be considerably older (577 ± 265 years), suggesting a role for rare geological or climatological events. Alongside these strong signatures of both contemporary and historical gene flow, we found little evidence of impacts on presumably adaptive phenotypic differentiation, except perhaps in the one instance of very recent cross‐watershed gene flow. Selection in this system seems to overpower gene flow—at least on the spatiotemporal scales investigated here.
Fig. 1 in Is Phylogeographic Congruence Predicted by Historical Habitat Stability, or Ecological Co-associations?
Fig. 1. Ecological niche models (ENMs) estimated for each of the five species from present-day to Last Glacial Maximum, and climatic stability based on the ENM time series. Color coding uses "warm" colors to indicate areas of highest probability of occurrence, or highest climatic stability. Species names are abbreviated as follows: C.p. (Cryptocercus punctulatus), R.f. (Reticulitermes flavipes), O.d. (Odontotaenius disjunctus), S.s. (Scolopocryptops sexspinosus), and N.a. (Narceus americanus).
Fig. 4 in Is Phylogeographic Congruence Predicted by Historical Habitat Stability, or Ecological Co-associations?
Fig. 4. Assessment of phylogeographic structure via comparison of FST (grey bars) versus Φ ST (black bars). All values represent mean differentiation across all pairs of BAPS clusters per species (i.e., "global" values). Species names are abbreviated as in Fig. 1.
Fig. 2 in Is Phylogeographic Congruence Predicted by Historical Habitat Stability, or Ecological Co-associations?
Fig. 2. Unrooted dendrograms representing two competing hypotheses about key drivers of phylogeographic congruence among five saproxylic invertebrates: abiotic factors related to historical climatic stability (left) versus biotic factors related to ecological co-associations (right). Scale bars represent either the inverse of a measure of habitat overlap (1 – Schoener's D; left), or the cumulative dissimilarity score for species interactions based on trophic guild, timing of colonization during succession, frequency of syntopy, and presumed interaction type (right). Numbers on nodes for the biotic drivers scenario indicate the number of jackknife replicates (out of 4) that supported a given predicted partition. Species names are abbreviated as in Fig. 1.
Fig. 3 in Is Phylogeographic Congruence Predicted by Historical Habitat Stability, or Ecological Co-associations?
Fig. 3. The number and distribution of spatial-genetic clusters, and phylogenetic relationships among mitochondrial DNA (mtDNA) haplotypes, for each of the five focal species. BAPS clusters were arbitrarily color-coded (alphabetic names are also shown), and spatial projections were based on membership of georeferenced individuals (Voronoї tessellations not shown). Grey shading identifies the "northern region" of the study area, referred to in the main text. Rooted phylogenetic trees (outgroup not shown) are simplified and color-coded corresponding to BAPS cluster membership of each mtDNA haplotype. Nodes with bootstrap support values>70% are marked by asterisks. Species names are abbreviated as in Fig. 1.
Is phylogeographic congruence predicted by historical habitat stability, or ecological co-associations?
<p>Comparative phylogeographic studies can uniquely distinguish idiosyncratic versus community-wide responses to past environmental change. However, to date, impacts of species interactions have been largely overlooked. Here we used non-genetic data to characterize two competing scenarios about expected levels of congruence among five saproxylic invertebrate species (i.e., a wood-feeding cockroach, termite and beetle; a predatory centipede, and a detritivorous millipede) from the southern Appalachians mountains—a topographically complex unglaciated landscape. Under one scenario, abiotic factors primarily drove species' responses, with predicted congruence based on spatial overlap of climatically stable habitat areas estimated for each species via ecological niche modeling. The other scenario considered biotic factors to be most influential, with proxies for actual or potential direct interactions used to predict congruence. Analyses of mitochondrial and nuclear DNA sequence datasets for each species focused on four axes of comparison: the number and distribution of spatial-genetic clusters, phylogeographic structure, changes in long-term effective population size, and historical gene flow dynamics. Overall, we found stronger support for ecological co-associations scenario, suggesting an important influence of biotic factors in constraining or facilitating species' responses to Pleistocene climatic cycles. However, there was an imperfect fit between this scenario's predictions and outcomes of empirical data analyses. Thus, our conclusions are compelling, but tentative. This work advances comparative phylogeography by expanding the scope of inferences beyond abiotic drivers, and provides insights into the evolutionary history of a functionally important ecological community, within a globally recognized center of endemism.</p>
Data from: Genomic sequencing reveals historical, demographic and selective factors associated with the diversification of the fire-associated fungus Neurospora discreta
Open the record for dataset details and reuse information.
Data from: Evidence for contemporary and historical gene flow between guppy populations in different watersheds, with a test for associations with adaptive traits
Open the record for dataset details and reuse information.
Data from: Is famine exposure during developmental life in rural Bangladesh associated with a metabolic and epigenetic signature in young adulthood? A historical cohort study
Open the record for dataset details and reuse information.
Is phylogeographic congruence predicted by historical habitat stability, or ecological co-associations?
Open the record for dataset details and reuse information.
Genetic variation in Neotropical butterflies is associated with sampling scale, species distributions, and historical forest dynamics
Open the record for dataset details and reuse information.
Figure 5 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 5. Historical samples of Hirudo medicinalis Linnaeus, 1758 (lot EEZM 406-407 "Kazan. E. Meyer, 1891") and Glossiphonia grubei (Lukin & Epshtein, 1959) (lot EEZM 397 "Lake Baikal (Maloe More [Strait]). V. Garjaew, 1899"). (a) H. medicinalis (specimen No 1; dorsal view). (b) H. medicinalis (specimen No 2; ventral view). (c) G. grubei (dorsal view). Scale bar = 10 mm. Photo: A. V. Bespyatykh.
Data from: Phylogenetic covariance probability: confidence and historical associations
The correlation that exists among multiple cladograms is often taken as evidence of some underlying macroevolutionary phenomenon common to the histories of those clades and, thus, as an explanation of the patterns of association of the constituent taxa. Such studies have various forms, the most common of which are cladistic biogeography and host--parasite coevolution. The issue of confidence has periodically been a theoretical consideration of vicariance biogeographers but in practice has been largely ignored by others. Previous approaches to assessing confidence in historical associations are examined here in relation to the difference between simple-event and cumulative probabilities and in relation to the restrictiveness of joint hypothesis testing. The phylogenetic covariance probability (PCP) test, a novel approach to assessing confidence in hypotheses of historical association, employs the empirical protocol of Brooks parsimony analysis (BPA) in an iterative, computer-intensive randomization routine. The PCP value consists of the frequency with which a solution as efficient or more efficient than the observed hypothesis of correlated phylogeny is achieved with random associations (e.g., of parasites and hosts or of taxa and areas). Because only the associations, and not the contributing phylogenies, are subjected to randomization, the test is not prone to certain criticisms leveled at other cladistic randomization routines. The behavior of the PCP test is examined in relation to eight published studies of historical association. This test is appropriately sensitive to the degrees of freedom allowed by the number of contributing clades and the number of taxa in those clades, to the extent of noncorrelated associations in the observed hypothesis, and to the relative information content contributing to that hypothesis.
Data from: Phylogenetic covariance probability: confidence and historical associations
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.