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  • Articles  (157)
  • Evolution  (129)
  • 04.07. Tectonophysics  (28)
  • 2020-2024  (157)
  • 1
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    Asplenium alleniae (Aspleniaceae), a new fern species from Borneo and New Guinea (2021)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 3, pp. 219-223
    Details
    Publication Date: 2024-07-03
    Description: A new species, Asplenium alleniae, is described from high elevation habitats in Sabah (Malaysia) and Papua New Guinea. Previous phylogenetic analyses of chloroplast loci determined that A. alleniae was most closely related to A. pauperequitum from New Zealand. Asplenium alleniae differs from A. pauperequitum most obviously by the acuminate apices of its longer pinnae. The combination of pinnate fronds with few pairs of primary pinnae and dark red-brown axes distinguishes A. alleniae from superficially similar species of Asplenium in Malesia. Asplenium alleniae is provisionally assessed as Endangered.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; conservation ; Malaysia ; Malesia ; Mount Kinabalu ; Papua New Guinea ; Sabah ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 2
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    Comparative analysis of bulk and velocity-derived density data in deep wells in the Adriatic Region (Italy) (2024)
    INGV
    Details
    Publication Date: 2024-07-02
    Description: This work is based on a systematic comparison between two datasets related to density data of geological formations crossed in 13 deep wells. The wells are located in the Adriatic area and reach depths of over 5000 meters. The main lithologies involved include sandstones, marls, clays, evaporite, and carbonate rocks. The first dataset concerns density values obtained from the analysis of sonic logs recorded along the wells, by applying the Gardner relation. The second dataset, on the other hand, refers to actually acquired density log measurements. Differences among the values in the two datasets have been calculated. The aim behind this work is to assess the reliability of rock densities estimated using the Gardner equation by comparing them to measurements obtained through density logs, despite many factors influencing the log density. This comparison of the densities obtained from various lithologies and geological formations leads us to draw, in this region, some initial considerations regarding the applicability and accuracy of Gardner formula, usually considered as standard reference, since the density log is generally available only within the reservoir. In the area we analyzed it is observed that the density values estimated from sonic velocities are underestimated for the Plio-Quaternary formations characterized by clayey-sandy lithologies by at least 0.1 g/cm3; whereas, densities of the carbonate sequences are overestimated by the same extent. Noteworthy, the density estimates deviate from the real values especially for gypsum units, overestimating by a factor of approximately 0.3 g/cm3. The results we obtained emphasize differences in density values when using the Gardner formula and suggest the need for taking into account the possible errors in the specific geological context or instead lithologies, such as those explored in this study.
    Description: Published
    Description: GT212
    Description: JCR Journal
    Keywords: density ; sonic log ; deep well ; Adriatic Sea ; Italy ; 04.07. Tectonophysics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 3
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    Peliosanthes macrophylla var. assamensis (Asparagaceae), a new variety from Behali Reserve Forest in Assam, Northeast India (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 2, pp. 121-125
    Details
    Publication Date: 2024-06-29
    Description: Peliosanthes macrophylla var. assamensis, a new variety from Behali Reserve Forest in Assam, Northeast India, is described with accompanying photos and relevant taxonomic data. It differs from var. macrophylla from Arunachal Pradesh and Sikkim, Northeast India, mainly by the staminal corona internally protruding near the middle (vs internally upright corona without a particular inward protrusion), shorter anthers somewhat divergent distally (vs nearly upright anthers), and longer, papillulate pistils exceeding the anthers (vs glabrous pistils not exceeding the anthers).
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Asparagaceae ; Eastern Himalayas ; floral structure ; new variety ; Peliosanthes macrophylla ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 4
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    Four new Curcuma species (Zingiberaceae) from Thailand (2021)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 3, pp. 244-253
    Details
    Publication Date: 2024-06-28
    Description: Four new Curcuma species (Zingiberaceae) from Thailand are described here. Curcuma fimbriata, C. micrantha and C. spathulata belong to C. subg. Hitcheniopsis, while C. globulifera belongs to the nominal C. subg. Curcuma. Each species is compared to the morphologically closest species and detailed descriptions, colour plates and information on their distribution, ecology, phenology and uses are provided. A preliminary IUCN conservation assessment of each of these species is proposed.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Curcuma globulifera ; Curcuma fimbriata ; Curcuma micrantha ; Curcuma parviflora ; Curcuma spathulata ; Curcuma subg. Hitcheniopsis
    Repository Name: National Museum of Natural History, Netherlands
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  • 5
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    In memoriam Emma Elizabeth van Nieuwkoop (1933–2022) (2022)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 67 no. 1, pp. vi-vii
    Details
    Publication Date: 2024-06-27
    Keywords: Obituary ; Plant Science ; Ecology ; Evolution ; Behavior and Systematics
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 6
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    A synoptic revision of the golden glories, genus Decalobanthus Convolvulaceae (2022)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 67 no. 1, pp. 37-70
    Details
    Publication Date: 2024-06-27
    Description: Eighteen species of Decalobanthus are recognized in this concise revision of the genus. Two new combinations are made and one new name is proposed to accommodate a change in rank. The genus is centered in SoutheastAsia and Malesia, with outlier species in the tropical Pacific and one species that reaches the Neotropics; a single wide-ranging species extends from eastern Tropical Africa and Madagascar in the west to the Hawaiian Islands in the east. Each species is provided with a diagnosis, summary of the species’ ecology, compiled vernacular names, and uses. Distributions are mapped based on herbarium voucher specimens. Where appropriate, typifications and nomenclatural problems are explained and comments on morphological variation and the need for further study are highlighted. Selected species are illustrated with colour photos of living plants. An index of numbered collections examined is provided to aid in specimen identification and herbarium curation.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; biodiversity ; Convolvulaceae ; Decalobanthus ; Malesia ; Merremia ; Southeast Asia ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 7
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    Two new species of Hanguana (Hanguanaceae) from Kalimantan, Indonesia (2021)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 66 no. 1, pp. 101-105
    Details
    Publication Date: 2024-06-26
    Description: Two new Hanguana species from Kalimantan, Indonesian Borneo, are described here. Hanguana karimatae from Karimata Island, West Kalimantan province, is characterised by a stout habit, prominently oblique yellow fruits with raised stigma and 1- or 2-seeded fruits. Hanguana nana from Central Kalimantan province is the smallest species in the genus with the stem entirely covered by leaves, deflexed barely branched infructescences with only a few fruits, each with a single bowl-shaped seed with a large and incurved appendage. These are the first descriptions of new Hanguana species from Kalimantan (Indonesian Borneo). Colour plates as well as notes on distribution, ecology, habitat and conservation status are provided.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Borneo ; Hanguana karimatae ; Hanguana nana ; Kalimantan ; Karimata Island ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 8
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    Maesa brevipedicellata (Primulaceae), a new species from Papua New Guinea (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 1, pp. 83-85
    Details
    Publication Date: 2024-06-24
    Description: Maesa brevipedicellata, a new species of Maesa (Primulaceae-Maesoideae) from Papua New Guinea, is described and illustrated based on herbarium specimen observations. The collections of this species resemble M. rufovillosa and were previously determined as that species. Maesa brevipedicellata is unique with its selfsupporting habit, hispid hairs throughout and paniculate inflorescences with very short pedicels. This new species mainly differs from M. rufovillosa by the habit (tree/shrub in M. brevipedicellata vs climber in M. rufovillosa) and the inflorescence structure (panicles in M. brevipedicellata vs simple racemes in M. rufovillosa).
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Ericales ; Maesa ; Malesia ; Myrsinaceae ; new species ; Papuasia ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
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  • 9
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    A new and unusual species of Dichaea (Orchidaceae: Zygopetalinae) from Costa Rica (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 1, pp. 61-64
    Details
    Publication Date: 2024-06-24
    Description: A new and florally unusual species of the genus Dichaea is described and illustrated from Costa Rica, where it is apparently endemic, and its relationships are discussed. Dichaea auriculata is compared with the group of species close to D. graminoides, from which it can be distinguished by the lip with a long isthmus, provided with two rounded auricles at the base, instead of the sessile lip typical of the group. It is also compared with another Costa Rican endemic in the same complex, D. gracillima, from which it can be distinguished by the autogamous, mostly cleistogamous, flowers, the 3-lobed lip with rounded basal lobes, the high keel along the lip isthmus, and the bifid ligule of the column. Notes on the habitat and the ecology of the new species are provided.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; autogamy ; Dichaeopsis ; Flora of Costa Rica ; new species ; plant diversity ; section Pseudodichaea
    Repository Name: National Museum of Natural History, Netherlands
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  • 10
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    Hibiscus fabiana sp. nov. (Malvaceae) from the Guinea Highlands (West Africa) (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 1, pp. 69-74
    Details
    Publication Date: 2024-06-23
    Description: Hibiscus fabiana Cheek (sect. Furcaria, Malvaceae) is described from the Guinea Highlands of West Africa, and its taxonomic affinities and ecology are considered. Hibiscus fabiana has previously been confused with H. rostellatus but has red fleshy calyx ribs (vs not red and non-fleshy), the calyx surface is glabrous apart from 1-armed bristles (vs densely covered in minute white stellate hairs and bristles 2–5-armed), the leaves 3(–5)-lobed, bases truncate to rounded (vs 5-lobed, cordate). The conservation status of the new species is assessed using the IUCN 2012 standard as Vulnerable. In the context of the recently discovered extinction of the Guinean endemic Inversodicraea pygmaea G.Taylor (Podostemaceae), we discuss the 30 new species to science discovered in Guinea since 2005, all but one of which are also range-restricted and threatened, usually by development or habitat loss. We consider it urgent to avoid their extinction, ideally with in situ conservation using an Important PlantAreas approach.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Bowal ; conservation ; Furcaria ; Guinea Highlands ; Hibiscus ; Important Plant Areas ; Simandou
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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