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20,299 results for “Systematic”
Fig. 2 in Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution
Fig. 2. Gnypeta nigrella (LeConte), in ventral view. Scale = 1 mm.
Figure 90 in The symphytognathoid spiders of the Gaoligongshan, Yunnan, China (Araneae: Araneoidea): Systematics and diversity of micro-orbweavers
Figure 90. Crassignatha longtou sp. n. from Yamu He, female. A, lateral; B, dorsal; C, ventral.
Fig. 195 in Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution
Fig. 195. Collection localities in Canada and Alaska of G. groenlandica.
Fig. 199 in Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution
Fig. 199. Collection localities in Canada and Alaska of G. carbonaria and G. saccharina.
Fig. 194 in Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution
Fig. 194. Collection localities in Canada of G. crebrepunctata, G. dentata, and G. helenae.
Fig. 193 in Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution
Fig. 193. Collection localities in Canada and Alaska of G. minuta and G. sellmani.
Fig. 190 in Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution
Fig. 190. Collection localities in Canada and Alaska of G. ashei.
Fig. 197 in Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution
Fig. 197. Collection localities in Canada and Alaska of G. caerulea.
Fig. 191 in Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution
Fig. 191. Collection localities in Canada and Alaska of G. brincki.
Fig. 1 in Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution
Fig. 1. Gnypeta nigrella (LeConte), in dorsal view. Scale = 1 mm.
Fig. 198 in Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution
Fig. 198. Collection localities in Canada and Alaska of G. lohsei and G. canadiensis.
Fig. 196 in Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution
Fig. 196. Collection localities in Canada of G. brevicornis and G. uteana.
Systematic shotgun of bacterial genomes [fastq.gz]
<p>Simulated shotgun from complete bacterial genomes. Genome accession is reported in the read name.</p> <p>This is a subsample (188,783,954 x 2 reads) of the whole dataset (1,887,895,180 x 2 reads).</p> <p>FASTQ format.</p>
Fig. 1. Philonthus neoniger Solodovnikov, nom. nov. Holotype. Habitus. Scale bar 1 in Xanthopygoides niger Cameron, 1951 (Xanthopygina) belongs to the genus Philonthus Stephens, 1829 (Philonthina): systematic and nomenclatural changes for the African Staphylinini (Coleoptera, Staphylinidae, Staphylininae, Staphylinini)
Fig. 1. Philonthus neoniger Solodovnikov, nom. nov. Holotype. Habitus. Scale bar 1 mm.
Data from: Upper Toarcian (Lower Jurassic) marine gastropods from the Cleveland Basin, England: systematics, palaeobiogeography and contribution to biotic recovery from the early Toarcian extinction event
<p>Here we describe a new late Toarcian (Lower Jurassic) marine gastropod fauna from rocks of the Cleveland Basin exposed on the North Yorkshire coast of England. The fossil assemblage comprises sixteen species, of which three are new: <i>Katosira</i>? <i>bicarinata</i> sp. nov., <i>Turritelloidea</i> <i>stepheni</i> sp. nov. and <i>Striactaenonina elegans</i> sp. nov. Four species are described in open nomenclature as <i>Tricarilda</i>? sp., <i>Jurilda</i> sp., <i>Cylindrobullina </i>sp. and <i>Cossmannina</i> sp. The other species have previously been described: <i>Coelodiscus minutus </i>(Schübler <i>in </i>Zieten), <i>Procerithium quadrilineatum </i>(Römer), <i>Pseudokatosira</i> <i>undulata</i> (Benz in von Zieten), <i>Palaeorissoina </i>aff.<i> acuminata</i><i> </i>(Gründel, 1999b), <i>Pietteia</i> <i>unicarinata</i> (Hudleston), <i>Globularia</i> cf. <i>canina</i> (Hudleston), <i>Striactaeonina</i> cf. <i>richterorum </i>Schulbert & Nützel, <i>Striactaenonina </i>aff.<i> tenuistriata </i>(Hudleston) and <i>Sulcoactaeon</i> <i>sedgvici </i>(Phillips). Most of these species are the earliest records of their respective genera and show palaeobiogeographical connections with contemporary gastropod associations from other regions of Europe and South America. The taxonomic composition of the late Toarcian Cleveland Basin gastropod assemblage differs substantially from the faunas of the late Pliensbachian and early Toarcian <i>Tenuicostatum</i> Zone, showing the strong effect of the early Toarcian mass extinction event on the marine gastropod communities in the basin. Only a few gastropod species are shared between the late Toarcian faunas and the much more diverse Aalenian gastropod faunas in the Cleveland Basin, suggesting there was a facies control on gastropod occurrences at that time. This is also a potential explanation for the taxonomic differences between the late Toarcian gastropod faunas in the Cleveland Basin and those in France, and Northern and Southern Germany.</p>
Dataset for a systematic technology review of Function-as-a-Service platforms
<p>Description</p> <p>This dataset comprises the results of analysis of 3 commercial and 7 open source FaaS platforms. The included Excel sheet lists the results grouped into multiple classification categories and dimensions. The data for each platform reside in a separate tab, and for every collected fact there is a corresponding link to the documentation or software repository.</p>
Data from: An Early Devonian actinostelic euphyllophyte with secondary growth from the Emsian of Gaspé (Canada) and the importance of tracheid wall thickening patterns in early euphyllophyte systematics
<p>Secondary growth is a tracheophyte structural feature whose earliest known occurrence dates to the late Pragian-early Emsian. <i>Armoricaphyton</i>, <i>Franhueberia</i> and an unnamed plant from eastern Canada represent the only instances of secondary growth documented to date for the Early Devonian. Here, we describe a new Early Devonian euphyllophyte exhibiting secondary growth, from the Emsian (c. 400-395 Ma) Battery Point Formation (Québec, Canada): <i>Gmujij</i> <i>tetraxylopteroides</i> gen. et sp. nov. is characterized by a mesarch actinostele with <i>Psilophyton</i>-type (P-type) tracheid wall thickenings and exhibits a new type of anatomical organization among Early Devonian wood-producing euphyllophytes. <i>Gmujij</i> differs from coeval euphyllophytes, but lack of data on branching patterns, reproductive structures and other traditional diagnostic features preclude classification among previously recognized euphyllophyte groups. We experiment with a numerical approach to tracheid size distributions, to compare <i>Gmujij</i> with younger euphyllophytes exhibiting secondary growth. Comparisons show similarity between <i>Gmujij</i> and aneurophytalean progymnosperms, such as <i>Tetraxylopteris</i>. However, its plesiomorphic P-type tracheids set apart<i> Gmujij</i> from younger actinostelic euphyllophytes, raising questions on the importance of tracheid thickening patterns as diagnostic characters separating major lineages. Answers to this question hinge on whether transitions between wall thickening patterns require simple or complex changes in developmental regulation, a matter that requires improved understanding of regulatory programs that determine tracheid thickening patterns. Irrespective of these, <i>Gmujij</i> adds a new component to the diversity of anatomically preserved plants known in the Early Devonian, an incompletely explored interval of tracheophyte anatomical diversification, contributing information that will help understanding of the evolutionary origins of secondary growth.</p>
Data from: Systematics of Hymenophyllum subg. Mecodium (Hymenophyllaceae) in Taiwan
—Hymenophyllum subg. Mecodium, composed of the taxonomically notorious H. polyanthos and approximately 15 other closely related taxa, are common elements of filmy fern communities in the tropical and subtropical moist forests. In Taiwan, although only H. polyanthos and one or two closely related taxa were recognized in recent studies, considerable morphological variation has been observed among populations throughout the island. Thus, we conducted an extensive morphological investigation, as well as a molecular phylogenetic analysis to clarify the specific diversity and phylogenetic relationships within subg. Mecodium in Taiwan. Field and herbaria surveys helped in recognizing five morphs in Taiwan, mainly differentiated by the combination of certain traits, viz., the presence or absence of stipe wings, general frond size and shape, degree of laminar crispation, sori position, and involucre shape. The different morphs had diverse ecological preferences. The phylogenetic tree, inferred from the sequence of plastids rbcL and rps4-trnS, demonstrated that subg. Mecodium materials in Taiwan comprise several well-supported lineages, mostly corresponding to the classification based on morphology. Comparing with the protologues and type specimens of 34 related scientific names, the five morphs are herein recognized as five independent species. A new species, H. exquisitum, is described here. Also, the status of H. paniculiflorum is reconfirmed and that of H. fujisanense, H. parallelocarpum, and H. punctisorum reinstated Only H. exquisitum and H. parallelocarpum are endemic to Taiwan among all the species studied. In addition, the names Hymenophyllum blumeanum, H. integrum, H. microsorum, H. polyanthos, H. tenellum, and H. wrightii are now excluded from the regional flora, and several related taxa from China, Taiwan, and the Philippines treated as synonyms. This study unravels the deep phylogenetic relationships within the subg. Mecodium in Taiwan and Eastern Asia.
Data from: Biocultural approaches to sustainability: a systematic review of the scientific literature
Current sustainability challenges demand approaches that acknowledge a plurality of human-nature interactions and worldviews, for which biocultural approaches are considered appropriate and timely. This systematic review analyses the application of biocultural approaches to sustainability in scientific journal articles published between 1990 and 2018 through a mixed methods approach combining qualitative content analysis and quantitative multivariate methods. The study identifies seven distinct biocultural lenses, i.e. different ways of understanding and applying biocultural approaches, which to different degrees consider the key aspects of sustainability science - inter and transdisciplinarity, social justice and normativity. The review suggests that biocultural approaches in sustainability science need to move from describing how nature and culture are co-produced to co-producing knowledge for sustainability solutions, and in so doing, better account for questions of power, gender and transformations, which has been largely neglected thus far.
Confronting sources of systematic error to resolve historically contentious relationships: a case study using gadiform fishes (Teleostei, Paracanthopterygii, Gadiformes)
<p>Reliable estimation of phylogeny is central to avoid inaccuracy in downstream macroevolutionary inferences. However, limitations exist in the implementation of concatenated and summary coalescent approaches, and Bayesian and full coalescent inference methods may not yet be feasible for computation of phylogeny using complicated models and large datasets. Here, we explored methodological (e.g., optimality criteria, character sampling, model selection) and biological (e.g., heterotachy, branch length heterogeneity) sources of systematic error that can result in biased or incorrect parameter estimates when reconstructing phylogeny by using the gadiform fishes as a model clade. Gadiformes include some of the most economically important fishes in the world (e.g., Cods, Hakes, and Rattails). Despite many attempts, a robust higher-level phylogenetic framework was lacking due to limited character and taxonomic sampling, particularly from several species-poor families that have been recalcitrant to phylogenetic placement. We compiled the first phylogenomic dataset, including <span>14,208 loci (>2.8 M bp) from 58 species representing all recognized gadiform families, to infer a time-calibrated phylogeny for the group. </span>Data were generated with a gene-capture approach targeting coding DNA sequences from single-copy protein-coding genes. Species-tree and concatenated maximum-likelihood analyses resolved all family-level relationships within Gadiformes. While there were a few differences between topologies produced by the DNA and the amino acid datasets, most of the historically unresolved relationships among gadiform lineages were consistently well resolved with high support in our analyses regardless of the methodological and biological approaches used. However, at deeper levels, we observed inconsistency in branch support estimates between bootstrap and gene and site coefficient factors (gCF, sCF). Despite numerous short internodes, all relationships received unequivocal bootstrap support while gCF and sCF had very little support, reflecting hidden conflict across loci. Most of the gene-tree and species-tree discordance in our study is a result of short divergence times, and consequent lack of informative characters at deep levels, rather than incomplete lineage sorting (ILS). We use this phylogeny to establish a new<span> higher-level classification of Gadiformes as a way of clarifying the evolutionary diversification of the order.</span> We recognize 17 families in five suborders: Bregmacerotoidei, Gadoidei, Ranicipitoidei, Merluccioidei, and Macrouroidei (including two subclades). A time-calibrated analysis using 15 fossil taxa suggests that Gadiformes evolved ~79.5 million years ago (Ma) in the late Cretaceous, but that most extant lineages diverged after the Cretaceous-Paleogene (K-Pg) mass extinction (66 Ma)<span>. </span>Our results reiterate the importance of examining phylogenomic analyses for evidence of systematic error that can emerge as a result of unsuitable modeling of biological factors and/or methodological issues, even when datasets are large and yield high support for phylogenetic relationships.</p>
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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.