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The taxonomic impediment: a shortage of taxonomists, not the lack of technical approaches
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RBINS Staff Publications 2021
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Natural and human-driven selection of a single non-coding body size variant in ancient and modern canids
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RBINS Staff Publications 2022 OA
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The delusion of stripes: A century-old mystery of five-lined sun skinks (Reptilia: Scincidae: Eutropis) of Peninsular India elucidated
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We re-evaluate the taxonomic identities of five-lined skinks of the genus Eutropis (E. trivittata, E. beddomei, E. nagarjunensis, and E. bibronii) inhabiting the Indian subcontinent. Previously it has been considered that E. trivittata is distributed in the western India and E. dissimilis in the northern India (from north-eastern India up to Pakistan). Based on our analysis, we revealed that the illustration (iconotype) of the untraceable type specimen of E. trivittata depicted by Hardwicke in Gray (1834) from “Dumdum” near Kolkata, West Bengal matches the typical E. dissimilis, also described from “Bengal”. The senior synonym, E. trivittata is a morphologically unique species, which is also supported by divergence in the mitochondrial 12S and 16S regions. E. trivittata is clearly separated with divergences of 5–7% from E. beddomei, E. vertebralis and E. nagarjunensis for 16S rRNA. After placing E. dissimilis with the synonymy of E. trivittata, the taxonomic status of the western Indian ‘E. trivittata’ required to be clarified. Therefore, we resurrect Mabuia vertebralis Boulenger, 1887, a junior synonym of western Indian E. trivittata, and redescribe its holotype collected from “Belgaum”, Karnataka. Although, morphologically closest to E. beddomei, Eutropis vertebralis comb. nov. is sister to E. nagarjunensis with divergence of 4% in the same mitochondrial regions. Based on our update of the currently confirmed localities for E. vertebralis comb. nov. and E. trivittata, we conducted Species Distribution Modelling (SDM) using the Maximum Entropy algorithm to predict its distribution range, and we discuss its conservation status.
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RBINS Staff Publications 2021
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Cranial osteology of Hypoptophis (Aparallactinae: Atractaspididae: Caenophidia), with a discussion on the evolution of its fossorial adaptations
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Fossoriality evolved early in snakes, and has left its signature on the cranial morphology of many extinct Mesozoic and early Caenozoic forms. Knowledge of the cranial osteology of extant snakes is indispensable for associating the crania of extinct lineages with a particular mode of life; this applies to fossorial taxa as well. In the present work, we provide a detailed description of the cranium of Hypoptophis wilsonii, a member of the subfamily Aparallactinae, using micro-computed tomography (CT). This is also the first thorough micro-CT-based description of any snake assigned to this African subfamily of predominantly mildly venomous, fossorial, and elusive snakes. The cranium of Hypoptophis is adapted for a fossorial lifestyle, with increased consolidation of skull bones. Aparallactines show a tendency toward reduction of maxillary length by bringing the rear fangs forward. This development attains its pinnacle in the sister subfamily Atractaspidinae, in which the rear fang has become the “front fang” by a loss of the part of the maxilla lying ahead of the fang. These dentitional changes likely reflect adaptation to subdue prey in snug burrows. An endocast of the inner ear of Hypoptophis shows that this genus has the inner ear typical of fossorial snakes, with a large, globular sacculus. A phylogenetic analysis based on morphology recovers Hypoptophis as a sister taxon to Aparallactus. We also discuss the implications of our observations on the burrowing origin hypothesis of snakes.
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RBINS Staff Publications 2022
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AVONET: morphological, ecological and geographical data for all birds
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Functional traits offer a rich quantitative framework for developing and testing theories in evolutionary biology, ecology and ecosystem science. However, the potential of functional traits to drive theoretical advances and refine models of global change can only be fully realised when species-level information is complete. Here we present the AVONET dataset containing comprehensive functional trait data for all birds, including six ecological variables, 11 continuous morphological traits, and information on range size and location. Raw morphological measurements are presented from 90,020 individuals of 11,009 extant bird species sampled from 181 countries. These data are also summarised as species averages in three taxonomic formats, allowing integration with a global phylogeny, geographical range maps, IUCN Red List data and the eBird citizen science database. The AVONET dataset provides the most detailed picture of continuous trait variation for any major radiation of organisms, offering a global template for testing hypotheses and exploring the evolutionary origins, structure and functioning of biodiversity.
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RBINS Staff Publications 2022
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The record of cricetid rodents across the Eocene–Oligocene transition in Transylvania, Romania: implications for the “Grande Coupure” at European scale
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A number of localities in Transylvania (Romania) have yielded vertebrate microfossil remains. Two localities have been stratigraphically and biochronologically dated to the late Eocene: i.e., Treznea and Bociu. The remaining three localities are dated to the early Oligocene: Mera, Cetățuie, and Suceag. The study of cricetid rodents corroborates the presence of this family in Eastern Europe during the late Eocene, as evidenced by the species Witenia sp., Bustrania cf. B. dissimile , and Eocricetodon cf. Eo. meridionalis. The cricetids identified in the sites of the early Oligocene age show a complete turnover and a notable increase in species richness following the Eocene/Oligocene boundary, with: Eucricetodon aff. Eu. huerzeleri, Tenuicricetodon arcemis gen. et sp. nov., Pseudocricetodon cf. Ps. montalbanensis, Paracricetodon cf. Pa. walgeri, Paracricetodon kavakderensis, Paracricetodon aff. Pa. stojonovici, and Paracricetodon wentgesi. In the context of the wider biogeographic history of Europe, these new discoveries indicate that Cricetidae arrived in Europe during at least two successive migrations from Asia in the late Eocene and earliest Oligocene. These migrations may have occurred via two different migration pathways through the north and south of Europe. In a second phase, Cricetidae arriving by the northern passway spread throughout Europe, whereas Cricetidae that arrived by the southern passway remained restricted to the central and southeastern Europe. The observations made on the Cricetidae allow for the proposal of a new, more general, scenario for the Eocene–Oligocene transition on a European scale, which is more complex than the “Grande Coupure” sensu stricto as initially proposed by Stehlin in 1909.
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RBINS Staff Publications 2025 OA
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Valuation of ecosystem services in marine protected areas: A comprehensive review of methods and needed developments
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Effectively managing Marine Protected Areas (MPAs) requires recognising and understanding the fundamental services offered by marine ecosystems and the socio-economic consequences that their changes will have. A systematic literature review was performed to generate a first in-detail screening and assessment of monetary and non-monetary methods for the valuation of ecosystem services (ES) and their application in MPAs and MPA networks. A total of 100 peer-reviewed papers on ES valuation within MPAs and MPA networks were identified and analysed. Valuation methods can be classified into nine monetary and seven non-monetary methodologies. There is a predominant use of monetary valuation methodologies, especially stated preference methods. However, combining monetary with non-monetary valuation approaches can provide deeper insights into the underlying reasons for assigning values to ES and offer enhanced opportunities to capture the value of services that may be challenging to express solely in monetary terms. Besides, the review underscores the gaps in assessment methodologies, particularly in addressing supporting and regulating ES, as well as non-use and option values related to MPAs, underscoring the need for innovative approaches to overcome challenges in capturing these essential components of marine ecosystems.
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RBINS Staff Publications 2024
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Tidal inlets in the Anthropocene: Geomorphology and benthic habitats of the Chioggia inlet, Venice Lagoon (Italy)
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RBINS Staff Publications 2019
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A three-species problem: a further example of homeomorphy in freshwater Ostracoda (Crustacea), with the description of a new genus and new species from a Brazilian river
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Homeomorphy is common in the valves and carapaces of Ostracoda. One of the best-known examples in non-marine ostracods is the morphological similarity in the extreme armature of anterior and posterior spines on the left valve in both Strandesia bicornuta Hartmann, 1964 from India and in Rudjakoviella prolongata (Triebel, 1962) Malz, 1973 from Margarita Island (West Indies). Here, we describe a third representative with such armature, Pseudocypricercus bonito gen. nov. spec. nov. from Brazil. These new taxa belong to the Cypricercinae McKenzie, 1971, which is characterized by the presence of the Triebel's loop in the middle of the attachment of the caudal ramus. The main characteristics of Pseudocypricercus gen. nov. are the shape and length of the β seta on the mandibular palp, which is slender and elongated, compared to other genera of this subfamily; the absence of seta d on the first thoracopod, and the absence of seta d2 on the second thoracopod, amongst other features. Pseudocypricercus bonito gen. nov. spec. nov. also has large anterior and posterior spines on the left valve as well as a posterior spine and the anterior blunt protrusion on the right valve. In addition, both the mandibular coxa and the third endite of the maxillula have remarkable large fist-like setae, while the male right prehensive palp has a perpendicularly positioned second segment. The similar armature on left valve and right valve in this taxon makes the homeomorphy known from R. prolongata and S. bicornuta into a “three-species problem”.
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RBINS Staff Publications 2026
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Safeguarding Ecosystem Services Amid Threats: Stakeholder-driven Prioritization of Conservation Measures for the Pendjari Biosphere Reserve in Bénin
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The Pendjari National Park, a UNESCO Biosphere Reserve in northern Bénin, West Africa, constitutes one of the last refuges for African megafauna in the region. It is threatened by many factors, such as ecosystem degradation, insecurity and poaching. Getting insights into the perceptions of all stakeholders having an interest for and/or an influence on the park is key to inform an effective management of the protected area and its unique biodiversity. We therefore identified priority conservation and management measures through a participatory approach adopting elements of Multi-Criteria Decision Analysis. A structured priority-setting exercise involving scientists, local authorities, park managers and representatives of local communities led to the formulation of over 70 conservation and management measures addressing prioritized threats on three priority ecosystem services provided by the Pendjari ecosystem: food supply, water supply and tourism. A group consensus was reached on measures implying more organic farming in the area (both to preserve food and to secure water supply), improved land use planning, soil fertility improvement practices, reinforcement of water supply through pumps, maintenance of tracks, advocacy towards private lodges, and promotional communication. The study concludes that conservation outcomes can be enhanced through stronger local stakeholder ownership and the implementation of practical measures based on the long-term provision of a diverse set of ecosystem services. It also highlights the multiple benefits of participatory decision-making in the context of a UNESCO Biosphere reserve, which serves as living laboratory to foster sustainable human-nature relationships.
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RBINS Staff Publications 2026