Megataxa for big science questions in taxonomy

Zhang, Zhi‐Qiang

doi:10.11646/megataxa.1.1.1

Cited by 10 publications

(6 citation statements)

References 12 publications

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“…However, the experimental evidences still fall short for concluding spin-triplet pairing [20,21,26]. The search goes on in relatively new SC materials, including doped topological insulators, noncentrosymmetric SCs [20,21], as well as iron-based SCs [27].…”

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confidence: 99%

Observation of half-quantum flux in the unconventional superconductor β-Bi ₂ Pd

Lee

et al. 2019

Science

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We report the observation of half-integer magnetic flux quantization in mesoscopic rings of superconducting β-Bi 2 Pd thin films. The half-quantum fluxoid manifests itself as a π phase shift in the quantum oscillation of the critical temperature. This result verifies unconventional superconductivity of β-Bi 2 Pd, in accord with the expectation of a topological superconductor. We also discuss the strong indication that β-Bi 2 Pd is a spin-triplet superconductor. The condensation of Cooper pairs gives rise to superconductivity [1]. A key signature of the electron pairing is the quantization of the magnetic flux through a multiply-connected superconducting body, in discrete units of Φ 0 = hc 2e. Indeed, the observations of the fluxoid quantization served as the first experimental verifications of the BCS theory [2, 3, 4]. Shortly after the initial magnetometry measurements, Little and Parks further demonstrated the oscillatory feature of the superconducting transition temperature T c , as a result of the periodic free energy of the superconducting state as a function of the applied magnetic flux [5]. The minimumof the free energy, or the maximum of the T c , is always achieved when the applied magnetic flux takes Φ = nΦ 0 , where n is an integer number. In the following decades, the Little-Parks effect, as a stringent test for the electron pairing, has been observed in numerous superconducting materials [6,7,8,9]. On the other hand, Geshkenbein, Larkin and Barone (GLB) predicted that

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confidence: 99%

Observation of half-quantum flux in the unconventional superconductor β-Bi ₂ Pd

Lee

et al. 2019

Science

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“…Building pride in contributing to global biodiversity knowledge is a critical step in addressing the taxonomic impediment in the 21st century. While we champion the rapidly growing concept of "integrative taxonomy" (Daglio and Dawson 2019;Zhang 2020)-what Boxshall (2020) describes as the "reciprocal illumination of morphological systematics and molecular sequence-based systematics"-we emphasize that no integration is possible if only one partner is on the stage. The central role of taxonomists in resource management, biodiversity conservation, and biosecurity must be affirmed (Hutchings 2020).…”

Section: The Way Forward: Training the Next Generations Of Researchers To Identify Speciesmentioning

confidence: 99%

Four priority areas to advance invasion science in the face of rapid environmental change

et al. 2021

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Unprecedented rates of introduction and spread of non-native species pose burgeoning challenges to biodiversity, natural resource management, regional economies, and human health. Current biosecurity efforts are failing to keep pace with globalization, revealing critical gaps in our understanding and response to invasions. Here, we identify four priority areas to advance invasion science in the face of rapid global environmental change. First, invasion science should strive to develop a more comprehensive framework for predicting how the behavior, abundance, and interspecific interactions of non-native species vary in relation to conditions in receiving environments and how these factors govern the ecological impacts of invasion. A second priority is to understand the potential synergistic effects of multiple co-occurring stressors – particularly involving climate change – on the establishment and impact of non-native species. Climate adaptation and mitigation strategies will need to consider the possible consequences of promoting non-native species, and appropriate management responses to non-native species will need to be developed. The third priority is to address the taxonomic impediment. The ability to detect and evaluate invasion risks is compromised by a growing deficit in taxonomic expertise, which cannot be adequately compensated by new molecular technologies alone. Management of biosecurity risks will become increasingly challenging unless academia, industry, and governments train and employ new personnel in taxonomy and systematics. Fourth, we recommend that internationally cooperative biosecurity strategies consider the bridgehead effects of global dispersal networks, in which organisms tend to invade new regions from locations where they have already established. Cooperation among countries to eradicate or control species established in bridgehead regions should yield greater benefit than independent attempts by individual countries to exclude these species from arriving and establishing.

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“…Taxonomy already has commissions of species nomenclature setting rules for how names of viruses, bacteria, fungi, algae, plants, cultivated plants, and animals are recognised (David et al 2012), several taxon specific societies', and a marine taxonomic network centred around WoRMS. The establishment of a global taxonomic society, as proposed by Zhang (2020) seems overdue. This could be the public and scientific face of the mega-science that taxonomy is.…”

Section: Discussionmentioning

confidence: 99%

Taxonomy as the key to life

Costello

2020

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Taxonomy is a key to life in not only providing guides to distinguishing species but in opening the door to knowledge about biodiversity. Species names, as the only standardised measure of biodiversity, are essential for communication of information about nature. However, new knowledge means that what we understand a species to be may change over time. Online species databases are improving accessibility to this knowledge and expertise and provide an easy way to keep up to date with species nomenclature and classification. I propose three practical priorities for taxonomy: (1) complete a world list of all known species through the “Catalogue of Life”; (2) establish an online cooperative community infrastructure that updates species nomenclature and links it to associated literature, information and expertise; (3) create an internet portal as a key to life on Earth. The first is near completion in the Catalogue of Life. The second has an exemplar in the World Register of Marine Species. The third goal has not begun but some of its ingredients exist. Moreover, a “key to life” infrastructure suitably supported by the community and science organisations, could be a focal point for a world taxonomic society and a taxonomy based mega-science initiative to understand life on Earth.

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Megataxa for big science questions in taxonomy

Cited by 10 publications

References 12 publications

Observation of half-quantum flux in the unconventional superconductor β-Bi ₂ Pd

Observation of half-quantum flux in the unconventional superconductor β-Bi ₂ Pd

Four priority areas to advance invasion science in the face of rapid environmental change

Taxonomy as the key to life

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Megataxa for big science questions in taxonomy

Cited by 10 publications

References 12 publications

Observation of half-quantum flux in the unconventional superconductor β-Bi 2 Pd

Observation of half-quantum flux in the unconventional superconductor β-Bi 2 Pd

Four priority areas to advance invasion science in the face of rapid environmental change

Taxonomy as the key to life

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Product

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Observation of half-quantum flux in the unconventional superconductor β-Bi ₂ Pd

Observation of half-quantum flux in the unconventional superconductor β-Bi ₂ Pd