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  • 2020-2024  (166,031)
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  • 11
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    Phylogenetic analysis of the Calamus javensis complex (Arecaceae: Calamoideae) in Malesia (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 3, pp. 205-211
    Details
    Publication Date: 2024-05-20
    Description: A phylogenetic analysis on specimen level was made in possible support of a multivariate analysis of the Calamus javensis complex. Nine species, at some time recognized within the complex, and several recognisable forms were included. The phylogenetic markers used were the nuclear 5S spacer (5S nrDNA) and the chloroplast Maturase K (matK). The Bayesian analysis showed that only 5S provided some resolution. The 50 % majority rule consensus showed one major polytomy with a few supported groups, which were mainly morphologically unsupported pairs of specimens. However, one group, the form C. tenompokensis (the only distinct group in a multivariate analysis) is morphologically distinct and phylogenetically monophyletic and can be recognized as a species. Of all other recognizable forms, we only consider C. acuminatus to be regarded as a variety as it was not supported in the morphometric analysis.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Calamoideae ; Calamus javensis ; chloroplast DNA ; intraspecific variation ; matK ; molecular phylogeny ; nuclear DNA ; paraphyletic ; rattan
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 12
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    High throughput identification of human monoclonal antibodies and heavy-chain-only antibodies to treat snakebite (2024)
    In:  Toxicon: X vol. 21 no. 100185
    Details
    Publication Date: 2024-05-20
    Description: Snakebite envenoming is a priority Neglected Tropical Disease that causes an estimated 81,000–135,000 fatalities each year. The development of a new generation of safer, affordable, and accessible antivenom therapies is urgently needed. With this goal in mind, rigorous characterisation of the specific toxins in snake venom is key to generating novel therapies for snakebite. Monoclonal antibodies directed against venom toxins are emerging as potentially strong candidates in the development of new snakebite diagnostics and treatment. Venoms comprise many different toxins of which several are responsible for their pathological effects. Due to the large variability of venoms within and between species, formulations of combinations of human antibodies are proposed as the next generation antivenoms. Here a high-throughput screening method employing antibody-based ligand fishing of venom toxins in 384 filter-well plate format has been developed to determine the antibody target/s The approach uses Protein G beads for antibody capture followed by exposure to a full venom or purified toxins to bind their respective ligand toxin(s). This is followed by a washing/centrifugation step to remove non-binding toxins and an in-well tryptic digest. Finally, peptides from each well are analysed by nanoLC-MS/MS and subsequent Mascot database searching to identify the bound toxin/s for each antibody under investigation. The approach was successfully validated to rapidly screen antibodies sourced from hybridomas, derived from venom-immunised mice expressing either regular human antibodies or heavy-chain-only human antibodies (HCAbs).
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 13
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    Revision of the genera of Scolodontidae, part 1: disentangling Happia Bourguignat, 1890 from Austroselenites Kobelt, 1905, Drepanostomella Bourguignat, 1890, Hirtudiscus Hylton Scott, 1973, Luteostriatella gen. nov., and Systrophiella H.B. Baker, 1925 (2024)
    Conchological Society of Great Britain & Ireland
    In:  Journal of Conchology vol. 45 no. 1, pp. 91-110
    Details
    Publication Date: 2024-05-20
    Description: Currently there are several problems with the genus-level taxa within the Scolodontidae. Multiple type-species designations have been proposed for some genera, type species are poorly described, and in some cases no clear decisions have been made in cases of homonymy or synonymy. This has resulted in wrongly identified species and genera within this group, which, among other problems, hinders the discovery and description of new species as well as the identification of known species. This paper is the first in a series in which all scolodontid genera will be redescribed based on type materials, starting with Happia Bourguignat, 1890 and its allies. Nomenclatural issues are resolved where possible. One new genus and a new species are described: Luteostriatella gen. nov. and Austroselenites pichinchense sp. nov. The following new combinations are made: Happia andia (Pilsbry, 1932) comb. nov., Systrophiella altivaga (Crawford, 1939) comb. nov., Systrophiella cayennensis (L. Pfeiffer, 1842) comb. nov., Systrophiella pygmea (Spix in Spix & Wagner, 1827) comb. nov., Systrophiella snethlagei (F. Baker, 1913) comb. nov., Systrophiella vitrina ( J.A. Wagner in Spix & Wagner, 1827) comb. nov., and Luteostriatella variegata (F. Haas, 1949) comb. nov.
    Keywords: Neotropics ; South America ; Mollusca ; Gastropoda ; Eupulmonata ; Scolodontina
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 14
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    Studies in Oberonia 8 (Orchidaceae: Malaxideae). Additional 24 new synonyms, a corrected spelling, and other nomenclatural matters (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 3, pp. 188-203
    Details
    Publication Date: 2024-05-20
    Description: The following 24 new synonyms in the orchid genus Oberonia are proposed, correct name (synonym(s)): O. aporophylla (O. longirepens); O. bertoldii (O. gracillima, O. laeta); O. bifida (O. celebica, O. fissiglossa); O. brunoniana (O. wallichii, O. saintberchmansii); O. costeriana (O. vulcanica); O. ensiformis (O. vesiculifera); O. griffithiana (O. khuongii); O. heliophila (O. asperula, O. rivularis, O. inversiflora, O. hosokawai); O. obcordata (O. menghaiensis); O. pachyphylla (O. janae); O. pachystachya (O. trignonoglossa); O. rhizomatosa (O. repens, O. torana, O. ponapensis, O. chenii, Hippeophyllum microphyllum); O. spathipetala (O. odontopetala, O. pectinata). Oberonia anicpita is not a distinct name introduced by Náves in F.M.Blanco but an orthographic variant of O. anceps, itself a synonym of O. lycopodioides. The spelling of several species epithets in honour of Takahide Hosokawa, a man, are corrected to hosokawai: Carpesium hosokawae (Asteraceae), Glochidion hosokawae (Phyllanthaceae), Pandanus hosokawae (Pandanaceae), Psychotria hosokawae (Rubiaceae), Eria hosokawae, Microtatorchis hosokawae, Habenaria hosokawae, Moerenhoutia hosokawae (all Orchidaceae).
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; nomenclature ; taxonomic vandalism ; typification ; variability
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 15
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    The InBIO Barcoding Initiative Database: DNA barcodes of Iberian Bees (2024)
    Pensoft Publishers
    In:  Biodiversity Data Journal vol. 12 no. e117172
    Details
    Publication Date: 2024-05-20
    Description: Bees are important actors in terrestrial ecosystems and are recognised for their prominent role as pollinators. In the Iberian Peninsula, approximately 1,100 bee species are known, with nearly 100 of these species being endemic to the Peninsula. A reference collection of DNA barcodes, based on morphologically identified bee specimens, representing 514 Iberian species, was constructed. The "InBIO Barcoding Initiative Database: DNA Barcodes of Iberian bees" dataset contains records of 1,059 sequenced specimens. The species of this dataset correspond to about 47% of Iberian bee species diversity and 21% of endemic species diversity. For peninsular Portugal only, the corresponding coverage is 71% and 50%. Specimens were collected between 2014 and 2022 and are deposited in the research collection of Thomas Wood (Naturalis Biodiversity Center, The Netherlands), in the FLOWer Lab collection at the University of Coimbra (Portugal), in the Andreia Penado collection at the Natural History and Science Museum of the University of Porto (MHNC-UP) (Portugal) and in the InBIO Barcoding Initiative (IBI) reference collection (Vairão, Portugal).
    Keywords: Hymenoptera ; occurrence records ; species distributions ; peninsular Portugal ; peninsular ; Spain ; DNA barcode ; cytochrome c oxidase subunit I (COI) ; pollinator
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 16
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    Critical transitions in the Amazon forest system (2024)
    In:  Nature vol. 626 no. 7999, pp. 555-564
    Details
    Publication Date: 2024-05-20
    Description: The possibility that the Amazon forest system could soon reach a tipping point, inducing large-scale collapse, has raised global concern. For 65 million years, Amazonian forests remained relatively resilient to climatic variability. Now, the region is increasingly exposed to unprecedented stress from warming temperatures, extreme droughts, deforestation and fires, even in central and remote parts of the system. Long existing feedbacks between the forest and environmental conditions are being replaced by novel feedbacks that modify ecosystem resilience, increasing the risk of critical transition. Here we analyse existing evidence for five major drivers of water stress on Amazonian forests, as well as potential critical thresholds of those drivers that, if crossed, could trigger local, regional or even biome-wide forest collapse. By combining spatial information on various disturbances, we estimate that by 2050, 10% to 47% of Amazonian forests will be exposed to compounding disturbances that may trigger unexpected ecosystem transitions and potentially exacerbate regional climate change. Using examples of disturbed forests across the Amazon, we identify the three most plausible ecosystem trajectories, involving diferent feedbacks and environmental conditions. We discuss how the inherent complexity of the Amazon adds uncertainty about future dynamics, but also reveals opportunities for action. Keeping the Amazon forest resilient in the Anthropocene will depend on a combination of local eforts to end deforestation and degradation and to expand restoration, with global eforts to stop greenhouse gas emissions.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 17
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    Orientation data of lineations and foliations from the central Tauern Window (Austria) (2024)
    GFZ Data Services
    Details
    Publication Date: 2024-05-20
    Description: Abstract
    Description: This dataset contains orientation data for foliations (n=773) and lineations (n=512) from the central Tauern Window collected during fieldwork in the years 2016 to 2019. The data is distributed in the form of shapefiles for easy use with GIS software. It can be displayed conveniently using the symbology files that are also part of the dataset.
    Keywords: structural data ; orientation data ; lineation ; foliation ; schistosity ; coordinates ; GIS ; 4DMB ; 4D Mountain Building ; tectonics ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC LANDFORMS 〉 FOLDS ; information 〉 information system 〉 geographic information system ; science 〉 natural science 〉 earth science 〉 geology 〉 tectonics
    Type: Dataset , Dataset
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  • 18
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    Late Glacial and Holocene vegetation and lake changes in SW Yakutia, Siberia, inferred from sedaDNA, pollen, and XRF data (2024)
    Frontiers
    In:  EPIC3Frontiers in Earth Science, Frontiers, 12, pp. 1354284-1354284, ISSN: 2296-6463
    Details
    Publication Date: 2024-05-19
    Description: 〈jats:p〉Only a few palaeo-records extend beyond the Holocene in Yakutia, eastern Siberia, since most of the lakes in the region are of Holocene thermokarst origin. Thus, we have a poor understanding of the long-term interactions between terrestrial and aquatic ecosystems and their response to climate change. The Lake Khamra region in southwestern Yakutia is of particular interest because it is in the transition zones from discontinuous to sporadic permafrost and from summergreen to evergreen boreal forests. Our multiproxy study of Lake Khamra sediments reaching back to the Last Glacial Maximum 21 cal ka BP, includes analyses of organic carbon, nitrogen, XRF-derived elements, sedimentary ancient DNA amplicon sequencing of aquatic and terrestrial plants and diatoms, as well as classical counting of pollen and non-pollen palynomorphs (NPP). The palaeogenetic approach revealed 45 diatom, 191 terrestrial plant, and 65 aquatic macrophyte taxa. Pollen analyses identified 34 pollen taxa and 28 NPP taxa. The inferred terrestrial ecosystem of the Last Glacial comprises tundra vegetation dominated by forbs and grasses, likely inhabited by megaherbivores. By 18.4 cal ka BP a lake had developed with a high abundance of macrophytes and dominant fragilarioid diatoms, while shrubs expanded around the lake. In the Bølling-Allerød at 14.7 cal ka BP both the terrestrial and aquatic systems reflect climate amelioration, alongside lake water-level rise and woodland establishment, which was curbed by the Younger Dryas cooling. In the Early Holocene warmer and wetter climate led to taiga development and lake water-level rise, reflected by diatom composition turnover from only epiphytic to planktonic diatoms. In the Mid-Holocene the lake water level decreased at ca. 8.2 cal ka BP and increased again at ca. 6.5 cal ka BP. At the same time mixed evergreen-summergreen forest expanded. In the Late Holocene, at ca. 4 cal ka BP, vegetation cover similar to modern conditions established. This study reveals the long-term shifts in aquatic and terrestrial ecosystems and a comprehensive understanding of lake development and catchment history of the Lake Khamra region.〈/jats:p〉
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 19
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    A distant traveller: a Late Jurassic nerineoid gastropod (Mollusca, Heterobranchia) on the Maasvlakte 2 beach, the Netherlands (2024)
    In:  Geologie en Mijnbouw vol. 103 no. e9
    Details
    Publication Date: 2024-05-19
    Description: A fragmentary nerineoid gastropod collected from the Maasvlakte 2 beach may be identified as Ptygmatis cf. bruntrutana (Thurmann, 1832). Probably originating from Upper Jurassic strata in north-eastern France, it must have been transported here by a forerunner of the River Meuse (Maas).
    Keywords: Late Jurassic ; Maasvlakte 2 ; Meuse ; Nerineoidea ; Paris Basin ; Ptygmatis
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 20
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    Studies in Papuasian Syzygium (Myrtaceae): 2. The furfuraceous species of subg. Syzygium (2021)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 66 no. 1, pp. 57-81
    Details
    Publication Date: 2024-05-19
    Description: The furfuraceous species of Syzygium subg. Syzygium in Papuasia are revised. The scurfy, furfuraceous epidermis that is a feature of the inflorescence branches and sometimes also of the hypanthium, the commonly chestnut brown colour of the dried leaves, and the reduced calyx that occurs in many species are characteristic features of the group. Within this subgenus, a new section Furfuraceum is described to accommodate these morphologically recognisable species. Descriptions are provided for each of the 40 species recognised, 28 of which are new. An identification key, distribution maps and an index to numbered exsiccatae are provided.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Furfuraceum ; identification key ; maps ; Myrtaceae ; Papuasia ; revision ; Syzygium
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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