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.
100
datasets available to search
ShareScore release 0.9.0
Dataset results
100 results for “Arborea arborea”
Santa Barbara Coastal site, station Santa Cruz Island, Diablo, Santa Barbara Channel, study of plant cover of Eisenia arborea in units of percent on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains plant cover of Eisenia arborea measurements in percent units and were aggregated to a yearly timescale.
FIGURE 3A. Asterochiton arboreae n in Revision of the whitefly genus, Asterochiton Maskell (Hemiptera: Aleyrodidae) from New Zealand, a study of intraspecific variation
FIGURE 3A. Asterochiton arboreae n. sp. Holotype puparium, A–B, E–I; Paratype puparia, C–D. A. Dorsum line drawing, B. Dorsum slide mount, C. Puparium on leaf, adult emerged, D. Dorsum of puparium from which adult parasitoid has emerged. E. Thoracic tracheal pore and tracheal fold with stippling, F. Vasiform orifice and abdominal segments VI–VIII. G. Antenna and legs, H. Vasiform orifice, I. Vasiform orifice, caudal pore, ventral setae, posterior spiracles and caudal trachea with stippling.
Data from: Anatomical and ontogenetic reassessment of the Ediacaran frond Arborea arborea and its placement within total group Eumetazoa
Organisms in possession of a frondose body plan are amongst the oldest and most enigmatic members of the soft‐bodied Ediacaran macrobiota. Appraisal of specimens from the late Ediacaran Ediacara Member of South Australia reveals that the frondose taxon Arborea arborea probably possessed a fluid‐filled holdfast disc, the size and form of which could vary within populations. Mouldic preservation of internal anatomical features provides evidence for tissue differentiation, and for bundles of tubular structures within the stalk of the organism. These structures connect in a fascicled arrangement to individual lateral branches, before dividing further into individual units housed on those branches. The observed fascicled branching arrangement, which seemingly connects individual units to the main body of the organism, is consistent with a biologically modular construction for Arborea, and raises the possibility of a colonial organization. In conjunction with morphological characters previously recognized by other authors, including apical‐basal and front‐back differentiation, we propose that to the exclusion of all alternative known possibilities, Arborea can be resolved as a total group eumetazoan.
Data from: Conservation phylogeography: does historical diversity contribute to regional vulnerability in European tree frogs (Hyla arborea)
Documenting and preserving the genetic diversity of populations, which conditions their long-term survival, has become a major issue in conservation biology. The loss of diversity often documented in declining populations is usually assumed to result from human disturbances; however, historical biogeographic events, otherwise known to strongly impact diversity, are rarely considered in this context. We apply a multi-locus phylogeographic study to investigate the late-Quaternary history of a tree frog (Hyla arborea) with declining populations in the northern and western part of its distribution range. Mitochondrial and nuclear polymorphisms reveal high genetic diversity in the Balkan Peninsula, with a spatial structure molded by the last glaciations. While two of the main refugial lineages remained limited to the Balkans (Adriatic coast, southern Balkans), a third one expanded to recolonize Northern and Western Europe, loosing much of its diversity in the process. Our findings show that mobile and a priori homogeneous taxa may also display substructure within glacial refugia ("refugia within refugia"), and emphasize the importance of the Balkans as a major European biodiversity center. Moreover, the distribution of diversity roughly coincides with regional conservation situations, consistent with the idea that historically impoverished genetic diversity may interact with anthropogenic disturbances, and increase the vulnerability of populations. Phylogeographic models seem important to fully appreciate the risks of local declines and inform conservation strategies.
Data from: Allele phasing is critical to revealing a shared allopolyploid origin of Medicago arborea and M. strasseri (Fabaceae)
Background: Whole genome duplication plays a central role in plant evolution. There are two main classes of polyploid formation: autopolyploids which arise within one species by doubling of similar homologous genomes; in contrast, allopolyploidy (hybrid polyploidy) arise via hybridization and subsequent doubling of nonhomologous (homoeologous) genomes. The distinction between polyploid origins can be made using gene phylogenies, if alleles from each genome can be correctly retrieved. We examined whether two closely related tetraploid Mediterranean shrubs (Medicago arborea and M. strasseri) have an allopolyploid origin - a question that has remained unsolved despite substantial previous research. We sequenced and analyzed ten low-copy nuclear genes from these and related species, phasing all alleles. To test the efficacy of allele phasing on the ability to recover the evolutionary origin of polyploids, we compared these results to analyses using unphased sequences. Results: In eight of the gene trees the alleles inferred from the tetraploids formed two clades, in a non-sister relationship. Each of these clades was more closely related to alleles sampled from other species of Medicago, a pattern typical of allopolyploids. However, we also observed that alleles from one of the remaining genes formed two clades that were sister to one another, as is expected for autopolyploids. Trees inferred from unphased sequences were very different, with the tetraploids often placed in poorly supported and different positions compared to results obtained using phased alleles. Conclusions: The complex phylogenetic history of M. arborea and M. strasseri is explained predominantly by shared allotetraploidy. We also observed that an increase in woodiness is correlated with polyploidy in this group of species and present a new possibility that woodiness could be a transgressive phenotype. Correctly phased homoeologues are likely to be critical for inferring the hybrid origin of allopolyploid species, when most genes retain more than one homoeologue. Ignoring homoeologous variation by merging the homoeologues can obscure the signal of hybrid polyploid origins and produce inaccurate results.
Data from: First-generation linkage map for the European tree frog (Hyla arborea) with utility in congeneric species
Background: Western Palearctic tree frogs (Hyla arborea group) represent a strong potential for evolutionary and conservation genetic research, so far underexploited due to limited molecular resources. New microsatellite markers have recently been developed for Hyla arborea, with high cross-species utility across the entire circum-Mediterranean radiation. Here we conduct sibship analyses to map available markers for use in future population genetic applications. Findings: We characterized eight linkage groups, including one sex-linked, all showing drastically reduced recombination in males compared to females, as previously documented in this species. Mapping of the new 15 markers to the ~200 My diverged Xenopus tropicalis genome suggests a generally conserved synteny with only one confirmed major chromosome rearrangement. Conclusions: The new microsatellites are representative of several chromosomes of H. arborea that are likely to be conserved across closely-related species. Our linkage map provides an important resource for genetic research in European Hylids, notably for studies of speciation, genome evolution and conservation.
Amelanchier arborea (Rosaceae) - bark
Image of Amelanchier arborea (Rosaceae) - bark
FIGURE 1–60 in Platessa arborea sp. nov. (Bacillariophyceae): A new tree moss dwelling diatom from the Eastern Himalayas, India
FIGURE 1–60. Light microscope images of Platessa arborea sp. nov. Valves representing the size diminution series. 1–30. Raphesternum valve, and 31–60. Sternum valve. Scale bar: 10 μm.
FIGURE 61–67 in Platessa arborea sp. nov. (Bacillariophyceae): A new tree moss dwelling diatom from the Eastern Himalayas, India
FIGURE 61–67. Platessa arborea sp. nov. SEM. 61. External view of the whole valve (Raphe-sternum valve) showing the striae arrangement and rectangular axial area at the middle of the valve. 62. External view of the whole valve (Sternum valve) showing the broad axial area at the center and biseriate striae near the mantle. 63. External view of apices showing the hooked proximal raphe ends and distal raphe end deflection. 64. Internal view of apices showing the proximal and distal raphe ends curvature and deflection. 65. Internal view of the whole valve (Raphe-sternum valve) showing the opposite deflection of both raphe ends and distal raphe ends with prominent helictoglossae. 66–67. Internal view of the whole valve (Sternum valve) showing the wide axial area and raised interstriae. Scale bars: = 1 μm (Figs 61–67).
FIGURE 2. Salzmannia arborea. A. Vegetative branch. B. Bark. C. Infructescence. D in Taxonomic notes on Chiococca and Salzmannia (Rubiaceae, Chiococceae) in northeastern Brazil, with a new combination and a new species
FIGURE 2. Salzmannia arborea. A. Vegetative branch. B. Bark. C. Infructescence. D. Apical bud with resinous exudate, indicated by arrow. (From J.G. Jardim & J.L. Paixão 6458). Photos by Jomar Jardim.
FIGURE 1. Salzmannia arborea. A. Flowering branch. B in Taxonomic notes on Chiococca and Salzmannia (Rubiaceae, Chiococceae) in northeastern Brazil, with a new combination and a new species
FIGURE 1. Salzmannia arborea. A. Flowering branch. B. Leaf of vegetative branch. C. Node with stipule. D. Inflorescences. E. Flower in anthesis. F. Open corolla with stamens and style. G. Stamen. H. Mature fruit. I. Pyrene. Drawn from A.M. Carvalho 4085 (A); J.G. Jardim & J.L. Paixão 6458 (B, C, H, I); S.C. Sant'Ana et al. 912 (D–G). Illustration by Rhudson H.S.F Cruz.
FIGURE 54. Daviesia arborea. A. Flowering branchlet. B. Inflorescence, flowers showing calyces only. C. Flower. D in A monograph of Daviesia (Mirbelieae, Faboideae, Fabaceae)
FIGURE 54. Daviesia arborea. A. Flowering branchlet. B. Inflorescence, flowers showing calyces only. C. Flower. D. Calyx opened out, upper lobes at left. E. Standard. F. Wings. G. Keel. H, Same, opened out. I. Pod. A, B from Lebler s.n. (BRI 147802); C–H from Crisp 8308; I from Lebler s.n. (BRI 147803). Drawn by B-J. Osborne and D. Fortescue. Adapted from Crisp (1991a) with permission from CSIRO Publishing.
Data from: First-generation linkage map for the European tree frog (Hyla arborea) with utility in congeneric species
Open the record for dataset details and reuse information.
Data from: Conservation phylogeography: does historical diversity contribute to regional vulnerability in European tree frogs (Hyla arborea)
Open the record for dataset details and reuse information.
Data from: Sex-chromosome differentiation parallels post-glacial range expansion in European tree frogs (Hyla arborea).
Open the record for dataset details and reuse information.
Data from: Anatomical and ontogenetic reassessment of the Ediacaran frond Arborea arborea and its placement within total group Eumetazoa
Open the record for dataset details and reuse information.
Data from: Spatial and temporal patterns of genetic variation in the widespread antitropical deep-sea coral Paragorgia arborea
Open the record for dataset details and reuse information.
Data from: Within- and among-population impact of genetic erosion on adult fitness-related traits in the European tree frog Hyla arborea
Open the record for dataset details and reuse information.
Data from: Timeframe of speciation inferred from secondary contact zones in the European tree frog radiation (Hyla arborea group)
Open the record for dataset details and reuse information.
Data from: Allele phasing is critical to revealing a shared allopolyploid origin of Medicago arborea and M. strasseri (Fabaceae)
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.