cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.12853909
title: The analysis of inter- and intrapopulation variability of <i>Milnesium eurystomum</i> Maucci, 1991 reveals high genetic divergence and a novel type of ontogenetic variation in the order Apochela

description: Tardigrada are a phylum of cosmopolitan invertebrates inhabiting both terrestrial and marine ecosystems. The carnivorous species are usually characterized by a wide buccal tube, which constitutes the first and rigid part of the digestive system. Among tardigrades, only the genus <i>Milnesium</i> is considered exclusively carnivorous and includes the largest known species in the phylum. Some members of the genus exhibit developmental variability in taxonomically important morphological traits such as the number of points on the secondary branches of claws and cuticular sculpturing. <i>Milnesium eurystomum</i> is one of the largest tardigrades, with body length reaching 1.2<b> </b>mm, and it is equipped with an exceptionally wide buccal tube, enabling this animal to feed on various prey, including other tardigrade species. Importantly, <i>M. eurystomum</i>, as well as other species with wide buccal tubes, were described solely using mature females, thus their developmental variability remains unknown. Interestingly, small <i>Milnesium</i> specimens with remarkably wide buccal tubes have never been reported, raising a question of whether such hatchlings and juveniles (first and second life stages) are extremely rare and simply have never been reported, or their buccal apparatus morphology is different from adults and thus constitutes as an undescribed buccal tube developmental variability. To answer this question, we analysed four populations of <i>M. eurystomum</i> originating from Greenland, Svalbard and Scotland. Due to discrepancies in species delineation based on different types of data, we parallelly applied various methods of species delimitation, both morphological and molecular. Thanks to ontogenetic analysis, we show and describe a novel type of developmental variability in the size and shape of the buccal tube. We also provide novel morphological traits and data for this species, together with the first record and characterization of males. Finally, we discuss the consequences of our findings for the taxonomy of <i>Milnesium</i> and tardigrades in general.
DOI: 10.6084/m9.figshare.12853909.v1
title: The analysis of inter- and intrapopulation variability of <i>Milnesium eurystomum</i> Maucci, 1991 reveals high genetic divergence and a novel type of ontogenetic variation in the order Apochela

description: Tardigrada are a phylum of cosmopolitan invertebrates inhabiting both terrestrial and marine ecosystems. The carnivorous species are usually characterized by a wide buccal tube, which constitutes the first and rigid part of the digestive system. Among tardigrades, only the genus <i>Milnesium</i> is considered exclusively carnivorous and includes the largest known species in the phylum. Some members of the genus exhibit developmental variability in taxonomically important morphological traits such as the number of points on the secondary branches of claws and cuticular sculpturing. <i>Milnesium eurystomum</i> is one of the largest tardigrades, with body length reaching 1.2<b> </b>mm, and it is equipped with an exceptionally wide buccal tube, enabling this animal to feed on various prey, including other tardigrade species. Importantly, <i>M. eurystomum</i>, as well as other species with wide buccal tubes, were described solely using mature females, thus their developmental variability remains unknown. Interestingly, small <i>Milnesium</i> specimens with remarkably wide buccal tubes have never been reported, raising a question of whether such hatchlings and juveniles (first and second life stages) are extremely rare and simply have never been reported, or their buccal apparatus morphology is different from adults and thus constitutes as an undescribed buccal tube developmental variability. To answer this question, we analysed four populations of <i>M. eurystomum</i> originating from Greenland, Svalbard and Scotland. Due to discrepancies in species delineation based on different types of data, we parallelly applied various methods of species delimitation, both morphological and molecular. Thanks to ontogenetic analysis, we show and describe a novel type of developmental variability in the size and shape of the buccal tube. We also provide novel morphological traits and data for this species, together with the first record and characterization of males. Finally, we discuss the consequences of our findings for the taxonomy of <i>Milnesium</i> and tardigrades in general.
DOI: 10.6084/m9.figshare.12853924
title: The relative role of glacial refugia and longstanding barriers in the diversification of a fossorial squamate

description: The Neotropics host the highest number of species of the biological realms, but the roles of Pleistocene climatic oscillations and longstanding geographic barriers on the origins of this remarkable biodiversity remains debated. Here, we test the relative contribution of these evolutionary mechanisms on the genetic and phenotypic diversification of <i>Amphisbaena pretrei</i>, a poorly studied amphisbaenid from eastern Brazil. Ecological niche modelling identified a large area along the coast of north-eastern Brazil that remained climatically stable since the last glacial maximum (21 kyr). Morphological analysis revealed the existence of differentiation in the southernmost sampled locality, despite generalized morphometric conservatism. Genetic structure was organized into two clades that are separated by the São Francisco river and that diverged some 3 Myr, before the recent Pleistocene glacial cycles. Coalescent analyses rejected all scenarios that included demographic changes, supporting instead diversification under population stability, also confirmed by neutrality tests. Taken together, our results support a prominent role of the São Francisco river as a longstanding barrier favouring the diversification of the fossorial <i>A. pretrei</i>, relative to recent Pleistocenic demographic dynamics. Generally, this study shows that including species with diverse natural histories is necessary before attempting any generalization regarding the evolutionary processes underlying Neotropical biodiversity.
DOI: 10.6084/m9.figshare.12853924.v1
title: The relative role of glacial refugia and longstanding barriers in the diversification of a fossorial squamate

description: The Neotropics host the highest number of species of the biological realms, but the roles of Pleistocene climatic oscillations and longstanding geographic barriers on the origins of this remarkable biodiversity remains debated. Here, we test the relative contribution of these evolutionary mechanisms on the genetic and phenotypic diversification of <i>Amphisbaena pretrei</i>, a poorly studied amphisbaenid from eastern Brazil. Ecological niche modelling identified a large area along the coast of north-eastern Brazil that remained climatically stable since the last glacial maximum (21 kyr). Morphological analysis revealed the existence of differentiation in the southernmost sampled locality, despite generalized morphometric conservatism. Genetic structure was organized into two clades that are separated by the São Francisco river and that diverged some 3 Myr, before the recent Pleistocene glacial cycles. Coalescent analyses rejected all scenarios that included demographic changes, supporting instead diversification under population stability, also confirmed by neutrality tests. Taken together, our results support a prominent role of the São Francisco river as a longstanding barrier favouring the diversification of the fossorial <i>A. pretrei</i>, relative to recent Pleistocenic demographic dynamics. Generally, this study shows that including species with diverse natural histories is necessary before attempting any generalization regarding the evolutionary processes underlying Neotropical biodiversity.
DOI: 10.6084/m9.figshare.12853915.v1
title: Filling the gaps in a highly diverse Neotropical lizard lineage: a new and endemic genus of Cercosaurinae (Squamata: Gymnophthalmidae) with the description of two new species from the Northern Andes of Colombia

description: In the last decade, understanding of the Neotropical lizards family Gymnophthalmidae has changed dramatically with the recognition of several new genera, resolution of non-monophyly, definition of previously unknown lineages and refined biogeographic hypotheses. Recent field explorations on the northern Cordillera Central in Colombia uncovered two undescribed species that cannot be assigned to any currently recognized gymnophthalmid genus. Based on a molecular phylogenetic analysis combined with morphological and genetic distances, we describe a new genus and two new species from the northern Andes of Colombia. <i>Magdalenasaura</i> gen. nov. is restricted to the Magdalena biogeographic province and is sister to the cis-Andean genus <i>Gelanesaurus</i>. The new genus can be readily distinguished from all other Cercosaurinae genera by a combination of genetic and morphological characters. The new genus contains <i>Magdalenasaura leurosquama</i> sp. nov. and <i>M. adercum</i> sp. nov., both found in forested habitats near streams at altitudes ranging from 1300 to 1850 m on the eastern flank of the northern Cordillera Central in Colombia. We differentiate the Cercosaurinae genera from Colombia based on general scutellation. Filling the gaps of the tremendous diversity of gymnophthalmid lizards will improve taxonomic and biogeographic hypotheses to better understand the evolution of endemic lineages from the north-western corner of South America. http://zoobank.org/urn:lsid:zoobank.org:pub:47E621FD-BEA9-4C65-87D8-D832C4EEC3A4
DOI: 10.6084/m9.figshare.12853915
title: Filling the gaps in a highly diverse Neotropical lizard lineage: a new and endemic genus of Cercosaurinae (Squamata: Gymnophthalmidae) with the description of two new species from the Northern Andes of Colombia

description: In the last decade, understanding of the Neotropical lizards family Gymnophthalmidae has changed dramatically with the recognition of several new genera, resolution of non-monophyly, definition of previously unknown lineages and refined biogeographic hypotheses. Recent field explorations on the northern Cordillera Central in Colombia uncovered two undescribed species that cannot be assigned to any currently recognized gymnophthalmid genus. Based on a molecular phylogenetic analysis combined with morphological and genetic distances, we describe a new genus and two new species from the northern Andes of Colombia. <i>Magdalenasaura</i> gen. nov. is restricted to the Magdalena biogeographic province and is sister to the cis-Andean genus <i>Gelanesaurus</i>. The new genus can be readily distinguished from all other Cercosaurinae genera by a combination of genetic and morphological characters. The new genus contains <i>Magdalenasaura leurosquama</i> sp. nov. and <i>M. adercum</i> sp. nov., both found in forested habitats near streams at altitudes ranging from 1300 to 1850 m on the eastern flank of the northern Cordillera Central in Colombia. We differentiate the Cercosaurinae genera from Colombia based on general scutellation. Filling the gaps of the tremendous diversity of gymnophthalmid lizards will improve taxonomic and biogeographic hypotheses to better understand the evolution of endemic lineages from the north-western corner of South America. http://zoobank.org/urn:lsid:zoobank.org:pub:47E621FD-BEA9-4C65-87D8-D832C4EEC3A4
DOI: 10.6084/m9.figshare.12853930.v1
title: Phylogeographical patterns of <i>Campanula</i> gr. <i>arvatica</i>, an endemic group of the Cantabrian mountains (NW Iberian Peninsula), based on plastid and nuclear DNA polymorphisms

description: Endemicity is a key consideration for conservation, and taxa that are endemic to a single country are vaulable conservation targets. In this study, we investigate endemic species of the genus <i>Campanula</i> in northern Iberian Peninsula based on sequences of nrDNA (internal transcribed spacer, ITS) and plastid regions (<i>rbcL, trnL-F</i> and <i>trnS-G</i>) and additionally the secondary structure of ITS2. The main aim of this work was to evaluate the evolutionary history of <i>Campanula</i> gr. <i>arvatica</i> from the Cantabrian Range (northern Iberian Peninsula) and establish phylogeographical patterns. Our results showed that molecular data from nuclear DNA and plastid regions should be applied for management and conservation strategies to monitor this endemic group from northern Spain. Furthermore, molecular evidence indicates significant differences among the three taxa analysed and shows the importance of the Cantabrian Mountains as a refuge for endemic Iberian flora in which processes of neo-speciation and/or crypto-speciation are under way.
DOI: 10.6084/m9.figshare.12853918
title: Phylogeny-based species delimitation and integrative taxonomic revision of the <i>Hyalinobatrachium fleischmanni</i> species complex, with resurrection of <i>H. viridissimum</i> (Taylor, 1942)

description: <i>Hyalinobatrachium fleischmanni</i> is one of the widest ranging glassfrog species, occurring in the lowlands from Mexico through Central America to Ecuador. Despite its conservative morphology, previous studies suggested that the species is comprised of multiple lineages. Here we test the hypothesis of cryptic species within <i>H. fleischmanni</i> by means of morphology, morphometrics, bioacoustics, and molecular analysis. Molecular delimitation based on mitochondrial and nuclear genes detected 17 candidate species within <i>H. fleischmanni</i> but combined with other sources of evidence, we support the recognition of at least three different species within the name <i>H. fleischmanni</i>. The identity of <i>H. fleischmanni</i> sensu stricto is supported for populations from Costa Rica to eastern Honduras while the name <i>Hyalinobatrachium tatayoi</i> corresponds to the southern lineages in Costa Rica and South America. Those two species differ in the note duration of the advertisement call and in the absence of nuptial pads in the hand webbing of <i>H. fleischmanni</i> males. Populations from Mexico and Guatemala represent a third species to which we assign the available name <i>H. viridissimum</i> <b>comb. nov.</b> <i>Hyalinobatrachium viridissimum</i> differs from <i>H. fleischmanni</i> and <i>H. tatayoi</i> in mitochondrial DNA divergence, variation in peak frequency, and note duration of the advertisement call. A divergent lineage from western and central Honduras is tentatively assigned to <i>H. viridissimum</i>. Based on these results, we provide updated information for each species. http://www.zoobank.org/urn:lsid:zoobank.org:pub:96D65174-4F8B-4E4B-8C85-967767311255
DOI: 10.6084/m9.figshare.12853918.v1
title: Phylogeny-based species delimitation and integrative taxonomic revision of the <i>Hyalinobatrachium fleischmanni</i> species complex, with resurrection of <i>H. viridissimum</i> (Taylor, 1942)

description: <i>Hyalinobatrachium fleischmanni</i> is one of the widest ranging glassfrog species, occurring in the lowlands from Mexico through Central America to Ecuador. Despite its conservative morphology, previous studies suggested that the species is comprised of multiple lineages. Here we test the hypothesis of cryptic species within <i>H. fleischmanni</i> by means of morphology, morphometrics, bioacoustics, and molecular analysis. Molecular delimitation based on mitochondrial and nuclear genes detected 17 candidate species within <i>H. fleischmanni</i> but combined with other sources of evidence, we support the recognition of at least three different species within the name <i>H. fleischmanni</i>. The identity of <i>H. fleischmanni</i> sensu stricto is supported for populations from Costa Rica to eastern Honduras while the name <i>Hyalinobatrachium tatayoi</i> corresponds to the southern lineages in Costa Rica and South America. Those two species differ in the note duration of the advertisement call and in the absence of nuptial pads in the hand webbing of <i>H. fleischmanni</i> males. Populations from Mexico and Guatemala represent a third species to which we assign the available name <i>H. viridissimum</i> <b>comb. nov.</b> <i>Hyalinobatrachium viridissimum</i> differs from <i>H. fleischmanni</i> and <i>H. tatayoi</i> in mitochondrial DNA divergence, variation in peak frequency, and note duration of the advertisement call. A divergent lineage from western and central Honduras is tentatively assigned to <i>H. viridissimum</i>. Based on these results, we provide updated information for each species. http://www.zoobank.org/urn:lsid:zoobank.org:pub:96D65174-4F8B-4E4B-8C85-967767311255
DOI: 10.6084/m9.figshare.12853933
title: Morphological phylogeny of <i>Reinwardtia</i> Brauer & Bergenstamm (Diptera, Muscidae), with the description of a new species from the Neotropical region

description: <i>Reinwardtia</i> Brauer & Bergenstamm is a monotypic genus, with only <i>R. tachinina</i> described from Venezuela. Here, we revised the genus to include <i>Reinwardtia bicolor</i> sp. nov. from Colombia and Ecuador. To investigate the phylogenetic positioning of <i>Reinwardtia</i>, we present a morphological analysis, including 16 species of the Neotropical Reinwardtiini genera. We used 35 characters from male and female adults. Based on this phylogenetic analysis, <i>Reinwardtia</i> is a monophyletic genus, a sister-group of the monotypic <i>Synthesiomyia</i> Brauer & Bergenstamm. http://zoobank.org:pub:F8495ED0-FBDA-4A91-9A76-40B708FC6997 http://zoobank.org/urn:lsid:zoobank.org:act:8BF649B3-C9F3-4B90-B120-1CE28F051F5A
DOI: 10.6084/m9.figshare.12853933.v1
title: Morphological phylogeny of <i>Reinwardtia</i> Brauer & Bergenstamm (Diptera, Muscidae), with the description of a new species from the Neotropical region

description: <i>Reinwardtia</i> Brauer & Bergenstamm is a monotypic genus, with only <i>R. tachinina</i> described from Venezuela. Here, we revised the genus to include <i>Reinwardtia bicolor</i> sp. nov. from Colombia and Ecuador. To investigate the phylogenetic positioning of <i>Reinwardtia</i>, we present a morphological analysis, including 16 species of the Neotropical Reinwardtiini genera. We used 35 characters from male and female adults. Based on this phylogenetic analysis, <i>Reinwardtia</i> is a monophyletic genus, a sister-group of the monotypic <i>Synthesiomyia</i> Brauer & Bergenstamm. http://zoobank.org:pub:F8495ED0-FBDA-4A91-9A76-40B708FC6997 http://zoobank.org/urn:lsid:zoobank.org:act:8BF649B3-C9F3-4B90-B120-1CE28F051F5A
DOI: 10.6084/m9.figshare.12853996
title: Enrichment at vapour–liquid interfaces of mixtures: establishing a link between nanoscopic and macroscopic properties

description: Component density profiles at vapour–liquid interfaces of mixtures can exhibit a non-monotonic behaviour with a maximum that can be many times larger than the densities in the bulk phases. This is called <i>enrichment</i> and is usually only observed for low-boiling components. The enrichment is a nanoscopic property which can presently not be measured experimentally – in contrast to the classical Gibbs adsorption. The available information on the enrichment stems from molecular simulations, density gradient theory, or density functional theory. The enrichment is highly interesting as it is suspected to influence the mass transfer across interfaces. In the present work, we review the literature data and the existing knowledge on this phenomenon and propose an empirical model to establish a link between the nanoscopic enrichment and macroscopic properties – namely vapour–liquid equilibrium data. The model parameters were determined from a fit to a dataset on the enrichment in about 100 binary Lennard-Jones model mixtures that exhibit different types of phase behaviour, which has recently become available. The model is then tested on the entire set of enrichment data that is available in the literature, which includes also mixtures containing non-spherical, polar, and H-bonding components. The model predicts the enrichment data from the literature (2,000 data points) with an AAD of about 16%, which is below the uncertainty of the enrichment data. This establishes a direct link between measurable macroscopic properties and the nanoscopic enrichment and enables predictions of the enrichment at vapour–liquid interfaces from macroscopic data alone.
DOI: 10.6084/m9.figshare.12853996.v1
title: Enrichment at vapour–liquid interfaces of mixtures: establishing a link between nanoscopic and macroscopic properties

description: Component density profiles at vapour–liquid interfaces of mixtures can exhibit a non-monotonic behaviour with a maximum that can be many times larger than the densities in the bulk phases. This is called <i>enrichment</i> and is usually only observed for low-boiling components. The enrichment is a nanoscopic property which can presently not be measured experimentally – in contrast to the classical Gibbs adsorption. The available information on the enrichment stems from molecular simulations, density gradient theory, or density functional theory. The enrichment is highly interesting as it is suspected to influence the mass transfer across interfaces. In the present work, we review the literature data and the existing knowledge on this phenomenon and propose an empirical model to establish a link between the nanoscopic enrichment and macroscopic properties – namely vapour–liquid equilibrium data. The model parameters were determined from a fit to a dataset on the enrichment in about 100 binary Lennard-Jones model mixtures that exhibit different types of phase behaviour, which has recently become available. The model is then tested on the entire set of enrichment data that is available in the literature, which includes also mixtures containing non-spherical, polar, and H-bonding components. The model predicts the enrichment data from the literature (2,000 data points) with an AAD of about 16%, which is below the uncertainty of the enrichment data. This establishes a direct link between measurable macroscopic properties and the nanoscopic enrichment and enables predictions of the enrichment at vapour–liquid interfaces from macroscopic data alone.
DOI: 10.25919/5f439be5e60a0
title: Biogeochemical surveys in eastern Gulf of Carpentaria estuaries, June 2018

description: Archive of biogeochemical data from case study and research cruise in seven estuaries of the eastern Gulf of Carpentaria. Data were collected via two observational methods: 1) 24-36hr time series of hourly discrete samples and water-column profiles 2) Spatial surveys at approximately low tide, which include discrete samples and water-column profiles collected along the river-ocean axis of estuaries. A small number of discrete samples of porewater were also collected from bore holes to approximately 2m depth. Datasets include carbon, nutrients, sediment particle size, metals, phytoplankton photopigments, CDOM (chromophoric dissolved organic matter), and vertical profiles of salinity, temperature, dissolved oxygen, pH, turbidity chlorophyll a fluorescence, and fluorescent dissolved organic matter (fDOM).
DOI: 10.25592/uhhfdm.1446
title: DUFDE

description: Video recordings of seven German/French simultaneous bilingual children, starting at approx. 1 year and 6 months. One or two recordings eachmonth until approx. 5 years and 6 months (and some later recordings for some subjects). In each recording session (interviewer/child interaction) the child is addressed in both languages in one French and one German part. For privacy protection reasons, only the transcripts can be made available. Video recordings cannot be published. Meisel, Jürgen (ed.) (1994): Bilingual First Language Acquistion: French and German Grammatical Development (Language Acquisition & Language Disorders). Amsterdam: John Benjamins.