Showing 481 - 500 results of 657 for search '"extinction"', query time: 0.05s Refine Results
  1. 481

    Population age structure and conservation status of Ferula sinkiangensis (Apiaceae) in Xinjiang, China by Tianxing Liu, Qiumei Cao, Lei Yang, Zhaoping Yang, Wenjun Li

    Published 2024-09-01
    “…We assessed the status of this species with respect to its population age structure, the level of threat and extinction risk. Only one population remains, in Yining County, Xinjiang. …”
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    Article
  2. 482

    A Machine Learning Approach to Adapt Local Land Use Planning to Climate Change by Julia Forster, Stefan Bindreiter, Birthe Uhlhorn, Verena Radinger-Peer, Alexandra Jiricka-Pürrer

    Published 2025-01-01
    “…Additionally, climate change and species extinction demand rapid and effective policies in order to preserve soil resources for future generations. …”
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    Article
  3. 483

    Genomic Introgression Between Critically Endangered and Stable Species of Darwin's Tree Finches on the Galapagos Islands by Rachael Y. Dudaniec, Sonu Yadav, Julian Catchen, Sonia Kleindorfer

    Published 2025-01-01
    “…We provide evidence that introgression among a critically endangered and stable species of Darwin's tree finch across years may aid in the retention of adaptive alleles and genetic diversity in birds threatened with extinction.…”
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  4. 484

    DNA barcoding highlights taxonomic uncertainties and cryptic lineages of São Francisco River basin fishes by Denis Bruno Santos Marques Nunes, Alany Itala Pontes, Leandro Ferreira dos Santos, Leonardo Luís Calado, Luciano Freitas Barros-Neto, Silvia Yasmin Lustosa-Costa, Sergio Maia Queiroz Lima, Uedson Pereira Jacobina

    Published 2025-01-01
    “…However, human interference threatens several fish species, putting them at risk of extinction. Genetic knowledge about the ichthyofauna of the SFR is still lacking. …”
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    Article
  5. 485

    Threats and the active protection of birds in a riverbed: postulates for the strategy of the preservation of the middle Vistula River avifauna by Dariusz Bukaciński, Monika Bukacińska, Arkadiusz Buczyński

    Published 2018-12-01
    “…In a situation that may lead to the extinction of first the mew gull, Larus canus, and later other species of birds, in 2005-2006, we began the active protection of endangered species on the middle Vistula River islands. …”
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  6. 486

    Influence of Proton Irradiation on Thin Films of AZO and ITO Transparent Conductive Oxides—Simulation of Space Environment by Katarzyna Ungeheuer, Janusz Rybak, Amelia E. Bocirnea, Denis A. Pikulski, Aurelian C. Galca, Konstanty W. Marszalek

    Published 2025-01-01
    “…The ITO film was more homogenous in terms of the total thickness measured with SE, had fewer defects and adsorbates present on the surface, as XPS analysis proved, and did not show a difference after irradiation regarding its optical properties, transmission, refractive index, or extinction coefficient.…”
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  7. 487

    Distribution and Conservation of Ephedra rhytidosperma by Chao Tan, David Kay Ferguson, Yong Yang

    Published 2025-01-01
    “…ABSTRACT With global warming and increasingly intensified human activities, numerous species are on the verge of extinction, ca. 28% of living species are threatened globally, although conservation of endangered species has received worldwide attention. …”
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  8. 488

    Mussel farms drive species replacement through ecological drift and dispersal by Cynthia Vásquez, Renato A. Quiñones, Oscar Díaz, Nicolas Rozbaczylo, Jorge Pérez-Schultheiss, Eduardo Hernández-Miranda

    Published 2025-02-01
    “…Because ecological drift is more pronounced in small communities with low dispersal potential, endemic and rare species are more susceptible to local extinction. A metacommunity and neutral approach should be integrated into future studies and environmental regulations to improve the assessment of the impacts of mussel farming on diversity.…”
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  9. 489

    The Red Supergiant Progenitor Luminosity Problem by Emma R. Beasor, Nathan Smith, Jacob E. Jencson

    Published 2025-01-01
    “…However, extracting an RSG's luminosity requires assumptions regarding the star’s temperature or spectral type and the corresponding bolometric correction, circumstellar extinction, and possible variability. The robustness of these assumptions is difficult to test since we cannot go back in time and obtain additional pre-explosion imaging. …”
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  10. 490

    When to cryopreserve and when to let it go? A systematic review of priorities in wild animal cryobanking by James Edward Brereton, Sarah Louise Spooner, Susan L. Walker, Andrew Mooney, Philippe Wilson, Gabriela F. Mastromonaco, Elena Hunter, Samuel White

    Published 2025-01-01
    “…With increasing numbers of species threatened with extinction, collecting and conserving living samples is important for the long-term conservation of animal populations. …”
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  11. 491

    Mammals in the Collection of the National Museum of Natural History and Science (University of Lisbon, Portugal): A Contribution to Research and Conservation by Maria da Luz Mathias, Rita I. Monarca, Tomé Neves, Joaquim T. Tapisso, Maria Judite Alves, Maria da Graça Ramalhinho

    Published 2024-12-01
    “…Approximately 40% of the species within these groups are of conservation concern according to both national and international conventions, with nearly 20% at risk of extinction based on IUCN criteria. Additionally, the representativity of species in MUHNAC reflects the museum’s coverage of species records across the country, with smaller, non-threatened species being more prominently represented and larger, at-risk species being comparatively underrepresented. …”
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  12. 492

    Fine tuning enzyme activity assays for monitoring the enzymatic hydrolysis of PET by Krisztina Boros, Blanka Eszter Nagy, Raluca Bianca Tomoiagă, Róbert Tőtős, Monica Ioana Toșa, Csaba Paizs, László Csaba Bencze

    Published 2025-01-01
    “…The other predominantly employed UV-spectroscopy assay was also improved in terms of employed wavelength and medium extinction coefficient of the three aromatic degradation products, while being cross-validated by the improved HPLC method. …”
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  13. 493

    Population genetic structure of Phaedranassa cinerea Ravenna (Amaryllidaceae) and conservation implications by María Belén Buenaño, Carmen Ulloa Ulloa, Javier Francisco-Ortega, Alan W. Meerow, Nora H. Oleas

    Published 2025-01-01
    “…Based on the geographic distribution of the known populations, the species should be listed as endangered instead of vulnerable to extinction. Conclusions Phaedranassa cinerea shows lower genetic diversity than related species, with the most variation within populations. …”
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  14. 494

    Biodiversity futures: digital approaches to knowledge and conservation of biological diversity by H. Freitas, H. Freitas, A. C. Gouveia, A. C. Gouveia

    Published 2025-02-01
    “…However, the scale of human activities has significantly impacted the planet's biodiversity, with many species facing extinction in the coming decades with unknown consequences. …”
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  15. 495
  16. 496

    A Comparison of Machine Learning-Based Approaches in Estimating Surface PM<sub>2.5</sub> Concentrations Focusing on Artificial Neural Networks and High Pollution Events by Shijin Wei, Kyle Shores, Yangyang Xu

    Published 2025-01-01
    “…The sensitivity analysis of features that interpret the models suggests that the total extinction AOD at 550 nm and surface CO concentrations are the most important features in the Western and Eastern U.S., respectively. …”
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  17. 497

    Applications of MDMA in Modern Medicine - A Literature Review by Wiktoria Podlasiewicz, Paweł Siudziński, Mateusz Łyko, Alicja Skoczylas, Jakub Kurasz, Wojciech Maj, Wiktoria Tomaszewska, Katarzyna Pala, Piotr Dudziak, Anna Nowak, Maria Golińska

    Published 2025-01-01
    “…This process enhances neuroplasticity, fosters empathy and aids in trauma processing and fear extinction. This study aims to explore the potential uses of MDMA in medicine, particularly in treating mental illnesses. …”
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  18. 498

    The problem of conservation of gene pools of domesticated animals by Yu. A. Stolpovskiy, I. A. Zakharov-Gezekhus

    Published 2017-07-01
    “…Currently 17 % of world species are under threat of extinction. The arguments in favor of preserving local breeds are: 1) economic factors, such as moderation of quality requirements for food products, moderation of hygienic and climatic conditions (new types of diseases, vaccines, changes in the external environment), necessity to keep a reserve for successful breeding, opportunity to use local breeds in harsh environmental conditions; 2) scientific factors, in particular, possibility of studying the gene pool of local breeds in order to reconstruct the evolution of domesticated species (exploring local breeds can reveal the mechanisms of the evolutionary processes, ontogeny, behavior patterns, natural and artificial selection); 3) cultural and historical factors related to the fact that native breeds represent living monuments of traditional culture of the population. …”
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  19. 499

    البیلوبیجیا الأنثروبودیرمیکیة أو تجلید الکتب باستخدام جلود البشر : دراسة تاریخیة

    Published 2018-07-01
    “…Doctors also took part in thispractice by their hands, but the collectors of the books kept it from extinction toappear in the modern era and cause a noise in the antique libraries which rose tosearch for these human covers by using advanced techniques as "massspectrometry analysis" in collaboration with prominent scientists as "Daniel P.Kirby."…”
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  20. 500

    Synchronization of chaotic optomechanical system with plasmonic cavity for secured quantum communication by Mulubirhan Dangish, Abebe Belay Gemta, Alemayehu Getahun Kumela, Umer Sherefedin, Ruth Birhanu

    Published 2025-01-01
    “…We investigated the energy transfer efficiency of silicon divacancies, gallium arsenide, and indium phosphide by analyzing their absorption and extinction cross sections. The results indicate that gallium arsenide surpasses both silicon divacancies and indium phosphide in performance. …”
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