Coleg Gwyddoniaeth a Pheirianneg

  1. 2024
  2. Cyhoeddwyd

    The role of intraspecific trait variation in driving post-metamorphic survival: Implications for recruitment in open populations

    Gimenez Noya, L. & Jenkins, S., Awst 2024, Yn: Ecology and Evolution. 14, 8, e70065.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  3. Cyhoeddwyd

    A low-cost, high-fidelity converging-beam Doppler instrument for measuring velocity and turbulence at tidal energy sites

    Lake, T., Glasby, D., Horrillo-Caraballo, J., Togneri, M., Masters, I., Austin, M. & Lincoln, B., 31 Gorff 2024, Yn: International Marine Energy Journal. 7, 1, t. 11-24

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  4. Cyhoeddwyd

    Engaging Data-Art: Conducting a Public Hands-On Workshop

    Roberts, J. C., 31 Gorff 2024. 6 t.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapuradolygiad gan gymheiriaid

  5. Cyhoeddwyd

    Revealing forest structural "fingerprints": An integration of LiDAR and deep learning uncovers topographical influences on Central Amazon forests

    Goncalves, N., Rosa, D. M., do Valle, D. F., Smith, M., Dalagnol, R., Almeida, D. R. A., Nelson, B. & Stark, S. C., 31 Gorff 2024, Yn: Ecological Informatics. 102628.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  6. Wedi ei Dderbyn / Yn y wasg

    Creating Data Art: Authentic Learning and Visualisation Exhibition

    Roberts, J. C., 29 Gorff 2024, (Wedi ei Dderbyn / Yn y wasg). 9 t.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapuradolygiad gan gymheiriaid

  7. Cyhoeddwyd

    Airborne DNA reveals predictable spatial and seasonal dynamics of fungi

    Abrego, N., Furneaux, B., Hardwick, B., Somervuo, P., Palorinne, I., Aguilar-Trigueros, C. A., Andrew, N. R., Babiy, U. V., Bao, T., Bazzano, G., Bondarchuk, S. N., Bonebrake, T. C., Brennan, G. L., Bret-Harte, S., Bässler, C., Cagnolo, L., Cameron, E. K., Chapurlat, E., Creer, S., D'Acqui, L. P., de Vere, N., Desprez-Loustau, M.-L., Dongmo, M. A. K., Jacobsen, I. B. D., Fisher, B. L., Flores de Jesus, M., Gilbert, G. S., Griffith, G. W., Gritsuk, A. A., Gross, A., Grudd, H., Halme, P., Hanna, R., Hansen, J., Hansen, L. H., Hegbe, A. D. M. T., Hill, S., Hogg, I. D., Hultman, J., Hyde, K. D., Hynson, N. A., Ivanova, N., Karisto, P., Kerdraon, D., Knorre, A., Krisai-Greilhuber, I., Kurhinen, J., Kuzmina, M., Lecomte, N., Lecomte, E., Loaiza, V., Lundin, E., Meire, A., Mešić, A., Miettinen, O., Monkhouse, N., Mortimer, P., Müller, J., Nilsson, R. H., Nonti, P. Y. C., Nordén, J., Nordén, B., Norros, V., Paz, C., Pellikka, P., Pereira, D., Petch, G., Pitkänen, J.-M., Popa, F., Potter, C., Purhonen, J., Pätsi, S., Rafiq, A., Raharinjanahary, D., Rakos, N., Rathnayaka, A. R., Raundrup, K., Rebriev, Y. A., Rikkinen, J., Rogers, H. M. K., Rogovsky, A., Rozhkov, Y., Runnel, K., Saarto, A., Savchenko, A., Schlegel, M., Schmidt, N. M., Seibold, S., Skjøth, C., Stengel, E., Sutyrina, S. V., Syvänperä, I., Tedersoo, L., Timm, J., Tipton, L., Toju, H., Uscka-Perzanowska, M., van der Bank, M., van der Bank, F. H., Vandenbrink, B., Ventura, S., Vignisson, S. R., Wang, X., Weisser, W. W., Wijesinghe, S. N., Wright, S. J., Yang, C., Yorou, N. S., Young, A., Yu, D. W., Zakharov, E. V., Hebert, P. D. N., Roslin, T. & Ovaskainen, O., 25 Gorff 2024, Yn: Nature. 631, 8022, t. 835-842 8 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  8. E-gyhoeddi cyn argraffu

    Century-scale loss and change in the fishes and fisheries of a temperate marine ecosystem revealed by qualitative historical sources

    Moore, A., Brander, K., Evans, S., Holm, P. & Hiddink, J. G., 20 Gorff 2024, (E-gyhoeddi cyn argraffu) Yn: Fish and Fisheries.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  9. Cyhoeddwyd

    Wood Modification – Trends and Combinations

    Spear, M. & Bak, M., 20 Gorff 2024, Yn: Forests. 15, 7, 1 t., 1268.

    Allbwn ymchwil: Cyfraniad at gyfnodolynGolygyddiad

  10. Wedi ei Dderbyn / Yn y wasg

    Fostering Creative Visualisation Skills Through Data-Art Exhibitions

    Roberts, J. C., 19 Gorff 2024, (Wedi ei Dderbyn / Yn y wasg). 2 t.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapuradolygiad gan gymheiriaid

  11. Cyhoeddwyd

    Phygital workspace: a systematic review in developing a new typological work environment using XR technology to reduce the carbon footprint

    Lo, T., Chen, Y., Lai, T. & Goodman, A., 19 Gorff 2024, Yn: Frontiers in Built Environment. 10

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  12. E-gyhoeddi cyn argraffu

    Improving compliance around protected areas through fair administration of rules

    Ibbett, H., Dorward, L., Jones, J. P. G., Kohi, E. M., Dwiyahreni, A. A., Sankeni, S., Prayitno, K., Mchomvu, J., Kaduma, J. F., Saputra, A. W., Agustin, I. Y., Trywidiarini, T., Mawenya, R., Supriatna, J. & St. John, F. A. V., 17 Gorff 2024, (E-gyhoeddi cyn argraffu) Yn: Conservation Biology.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  13. Cyhoeddwyd

    Shifts from surface density compensation to projected warming, freshening and stronger stratification in the subpolar North Atlantic

    Marsh, R., Dey, D., Lenn, Y.-D. & Roberts, E. M., 17 Gorff 2024, Yn: Climate Dynamics. 62, 8, t. 8227-8253 27 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  14. Cyhoeddwyd

    Use of wastewater from passenger ships to assess the movement of COVID-19 and other pathogenic viruses across maritime international boundaries

    Jones, D. L., Bridgman, M., Pellett, C., Weightman, A. J., Kille, P., García Delgado, Á., Cross, G., Cobley, S., Howard-Jones, H., Chadwick, D. R. & Farkas, K., 15 Gorff 2024, Yn: Frontiers in Public Health. 12, t. 1377996

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  15. Cyhoeddwyd

    Assessing VHF Band Interference in Qatar in Support of Radar Subsurface Probing of Aquifers

    Abunada, A., Pierce, I., Khattab, T., Zorba, N. & Heggy, E., 11 Gorff 2024.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapuradolygiad gan gymheiriaid

  16. Wedi ei Dderbyn / Yn y wasg

    Using mixed-clay sediment gravity flow rheology as an indicator for flow velocity and run-out distance

    Baker, M., Baas, J., Malarkey, J. & Silva Jacinto, R., 10 Gorff 2024, (Wedi ei Dderbyn / Yn y wasg) Particulate Gravity Currents in the Environment. American Geophysical Union

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddPennodadolygiad gan gymheiriaid

  17. Cyhoeddwyd

    Declining lake ice in response to climate change can impact spending for local communities

    Filazzola, A., Imrit, M. A., Fleck, A., Woolway, R. I. & Sharma, S., 5 Gorff 2024, Yn: PLoS ONE. 19, 7, t. e0299937

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  18. Cyhoeddwyd

    The Role of Tidal Mixing in Shaping Early Eocene Deep Ocean Circulation and Oxygenation

    Ladant, J.-B., Millot‐Weil, J., de Lavergne, C., Green, M., Nguyen, S. & Donnadieu, Y., 5 Gorff 2024, Yn: Paleoceanography and Paleoclimatology. 39, 7, e2023PA004822.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  19. Cyhoeddwyd

    A comparison of the MPN and pour plate methods for estimating shellfish contamination by Escherichia coli

    Cooper, D. M., Mannion, F., Jones, L., Pinn, E., Sorby, R., Malham, S. & Le Vay, L., 2 Gorff 2024, Yn: Journal of Applied Microbiology. 135, 7, lxae163.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  20. Cyhoeddwyd

    A diversity of diversities: Do complex environmental effects underpin associations between below- and above-ground taxa?

    Seaton, F., George, P., Alison, J., Jones, D. L., Creer, S., Smart, S. M., Emmett, B. A. & Robinson, D., 1 Gorff 2024, Yn: Journal of Ecology. 112, 7, t. 1550-1564 15 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  21. Cyhoeddwyd

    A global initiative for ecological and evolutionary hologenomics

    Leonard, A., Earth Hologenome Initiative Consortium, Sutton, A. & Alberdi, A., 1 Gorff 2024, Yn: Trends in Ecology and Evolution. 39, 7, t. 616-620

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  22. E-gyhoeddi cyn argraffu

    CRISPR–Cas9 potential for identifying novel therapeutic targets in muscle-invasive bladder cancer

    Smith, D., Lunj, S., Adamson, A., Nagarajan, S., Smith, T., Reeves, K., Hoskin, P. & Choudhury, A., 1 Gorff 2024, (E-gyhoeddi cyn argraffu) Yn: Nature Reviews Urology. 21, 11 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  23. Cyhoeddwyd

    Heterogeneity of phosphorus sources invokes distinct niche partitioning pathways of ectomycorrhizal fungi in forest soils

    Lin, X., Ning, C., Liu, T., Gao, D., Smith, A., Yan, W. & Liu, S., 1 Gorff 2024, Yn: Soil Biology and Biochemistry.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  24. Cyhoeddwyd

    Simplified coherent optical network units for very-high-speed passive optical networks

    Kovacs, I. B., Faruk, M. S., Torres-Ferrera, P. & Savory, S. J., 1 Gorff 2024, Yn: IEEE Journal of Optical Communications and Networking. 16, 7

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  25. Cyhoeddwyd

    Soil pH and phosphorus availability regulate sulphur cycling in an 82-year-old fertilised grassland

    Wang, Q., Bauke, S., Döring, T., Yin, J., Cooledge, E., Jones, D. L., Chadwick, D., Tietema, A. & Bol, R., 1 Gorff 2024, Yn: Soil Biology and Biochemistry. 109436.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  26. Cyhoeddwyd

    Survival throughout the annual cycle of first year Canada Jays in the context of sibling competition, expulsion, and adoption

    Fuirst, M., Strickland, D., Freeman, K., Sutton, A., Graham, B., Burg, T. & Norris, R., 1 Gorff 2024, Yn: Ornithology. 141, 3

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  27. Cyhoeddwyd

    The impact of mobile demersal fishing on blue carbon in seabed sediments: Fisheries Industry Science Partnerships scheme (FISP) report

    Whitton, T., Austin, M., Newbould, A., Kennedy, H., Allender, S., Cavan, E., Parker, R., North, C., Hatchman, J. & Hiddink, J. G., 1 Gorff 2024, Bangor University. 18 t.

    Allbwn ymchwil: Llyfr/AdroddiadAdoddiad Arall

  28. Cyhoeddwyd

    An interactive visualization and data portal tool (PALTIDE) for relative sea level and palaeotidal simulations of the northwest European shelf seas since the Last Glacial Maximum

    Scourse, J., Ward, S., Wainwright, A., Bradley, S., Wilson, J. K. & Guo, J., Gorff 2024, Yn: Journal of Quaternary Science. 39, 5, t. 831-838 8 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  29. Cyhoeddwyd

    Fine sediment in mixed sand-silt environments impact bedform geometry by altering sediment mobility

    de Lange, S. L., Niesten, I., van de Veen, S. H. J., Baas, J., Lammers, J., Waldschlaeger, K., Boelee, D. & Hoitink, A. J. F., Gorff 2024, Yn: Water Resources Research. 60, 7, e2024WR037065.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  30. Cyhoeddwyd

    Ni(II)-binding affinity of CcNikZ-II and its homologs: the role of the HH-prong and variable loop revealed by structural and mutational studies

    Diep, P., Stogios, P. J., Evdokimova, E., Savchenko, A., Mahadevan, R. & Yakunin, A. F., Gorff 2024, Yn: Febs Journal. 291, 13, t. 2980-2993 14 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  31. Cyhoeddwyd

    Parental material and climate jointly determine the biomass and diversity of soil microbial communities along an elevational gradient on a subtropical karst mountain

    He, X., Zeng, L., Zhu, G., Ellwood, M. D. F., Zhou, L., Huang, J., Wang, C., Li, W., Lin, D., Wei, P., Liu, S., Luo, M., Zhang, Y.-H. & Yang, Y., Gorff 2024, Yn: Journal of Biogeography. 51, 7, t. 1185-1198 14 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  32. Cyhoeddwyd

    Protecting stable biological nomenclatural systems enables universal communication: A collective international appeal

    1558 additional coauthors, Gorff 2024, Yn: BioScience. 74, 7, t. 467-472 6 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  33. Cyhoeddwyd

    Using New Integrated Distance Sampling Models for Simple Point Counts

    Hallman, T., Gorff 2024, Yn: The Bulletin of the Ecological Society of America. 105, 3, t. e02154

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  34. Cyhoeddwyd

    Vegetation growth responses to climate change: a cross-scale analysis of biological memory and time-lags using tree ring and satellite data

    Tang, W., Liu, S., Jing, M., Healey, J., Smith, M., Farooq, T. H., Zhu, L., Zhao, S. & Wu, Y., Gorff 2024, Yn: Global Change Biology. 30, 7, e17441.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  35. Cyhoeddwyd

    The amphibians and reptiles of Cusuco National Park, Northwest Honduras: updates from a long-term conservation programme

    Laking, A. E., Solís, J. M., Brown, T., Maddock, S. T., Burdekin, O., Taylor, P., Lonsdale, G., Green, S. E. W., Martin, T. E., Galdamez, J. R., Kolby, J. E., Erens, J. & Jocque, M., 28 Meh 2024, Yn: Neotropical Biology and Conservation. 19, 2, t. 37-62 26 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  36. Cyhoeddwyd

    Implementation of Oxygen Enhanced Magnetic Resonance Imaging (OE-MRI) and a Pilot Genomic Study of Hypoxia in Bladder Cancer Xenografts

    Shabbir, R., Telfer, B., Dickie, B., Reardon, M., Babur, M., Williams, K., Choudhury, A., West, C. & Smith, T., 27 Meh 2024, Yn: Cancer Genomics & Proteomics. 21, 4, t. 380-387 8 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  37. Cyhoeddwyd

    Ants in the clouds: A preliminary checklist of the ant (Hymenoptera, Formicidae) fauna of a Honduran cloud forest ecosystem, featuring a key to country genera

    Wint, F. C. D., Oorts, D., Branstetter, M. G., Graaf, D. D., Dekoninck, W., Jocque, M., Martin, T. E., Sudworth, J., Osselaer, R. V. & Hamer, M. T., 24 Meh 2024, Yn: Neotropical Biology and Conservation. 19, 2, t. 107-135 29 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  38. E-gyhoeddi cyn argraffu

    Amazon forest biogeography predicts resilience and vulnerability to drought

    Chen, S., Stark, S. C., Nobre, A. D., Cuartas, L. A., Amore, D. D. J., Restrepo-Coupe, N., Smith, M., Chitra-Tarak, R., Ko, H., Nelson, B. & Saleska, S. R., 19 Meh 2024, (E-gyhoeddi cyn argraffu) Yn: Nature.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  39. Cyhoeddwyd

    Herbal leys increase forage macro- and micronutrient content, spring lamb nutrition, liveweight gain, and reduce gastrointestinal parasites compared to a grass-clover ley

    Cooledge, E., Kendall, N., Leake, J., Chadwick, D. & Jones, D. L., 15 Meh 2024, Yn: Agriculture, Ecosystems and Environment. 367, 108991.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  40. Cyhoeddwyd

    Snake Identification in the Ancient Egyptian Brooklyn Medical Papyrus. A New Study of the Twenty-Four Extant Registers of the "Snakebite Papyrus"

    Sanchez, G. M., Meltzer, E. S., Wüster, W., Casewell, N. R. & Schuett, G. W., 15 Meh 2024, Columbus, Georgia, USA: Lockwood Press. 212 t.

    Allbwn ymchwil: Llyfr/AdroddiadLlyfr

  41. Cyhoeddwyd

    Bacteriophage cocktail shows no toxicity and improves the survival of Galleria mellonella infected with Klebsiella spp

    Kelly, L. & Jameson, E., 13 Meh 2024, Yn: Journal of Virology. 98, 6, t. e0027224

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  42. Cyhoeddwyd

    Phylosymbiosis shapes skin bacterial communities and pathogen-protective function in Appalachian salamanders

    Osborne, O., Jiménez, R., Byrne, A., Gratwicke, B., Ellison, A. & Muletz-Wolz, C., 11 Meh 2024, Yn: The ISME Journal. 18, 1

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  43. Cyhoeddwyd

    Simply looking at greenery can boost mental health – new research

    Fleming, W., 11 Meh 2024, The Conversation.

    Allbwn ymchwil: Cyfraniad at gyhoeddiad arbenigolErthygl

  44. Wedi ei Dderbyn / Yn y wasg

    How tall is an eight-foot man?

    Shaw, V. & Winder, I. C., 7 Meh 2024, (Wedi ei Dderbyn / Yn y wasg) Yn: European Journal of Oriental Medicine. t. 1-11

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  45. Cyhoeddwyd

    Chronicle of an Insurgent Utopia

    Wilson, J., 6 Meh 2024, Rethinking Democracy for Post-Utopian Worlds : Alternative Political Projects After the Sovereign State. Casero, J. L. & Urabayen, J. (gol.). Palgrave Macmillan, t. 193-206

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddPennodadolygiad gan gymheiriaid

  46. Cyhoeddwyd

    D-day’s secret weapon: how wetland science stopped the Normandy landings from getting bogged down

    Dunn, C., 5 Meh 2024, The Conversation.

    Allbwn ymchwil: Cyfraniad at gyhoeddiad arbenigolErthygl

  47. Cyhoeddwyd

    Genome Assembly of the Dyeing Poison Frog Provides Insights into the Dynamics of Transposable Element and Genome-Size Evolution

    Dittrich, C., Hoelzl, F., Smith, S., Fouilloux, C. A., Parker, D. J., O'Connell, L. A., Knowles, L. S., Hughes, M., Fewings, A., Morgan, R., Rojas, B. & Comeault, A. A., 5 Meh 2024, Yn: Genome Biology and Evolution. 16, 6

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  48. Cyhoeddwyd

    Decarbonization potential of floating solar photovoltaics on lakes worldwide

    Woolway, R. I., Zhao, G., Rocha, S. M. G., Thackeray, S. J. & Armstrong, A., 4 Meh 2024, Yn: Nature Water. 2, 6, t. 566-576 11 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  49. E-gyhoeddi cyn argraffu

    Optimising parameters for pilot scale steam explosion and continuous pressurised disc refining of Miscanthus and sugarcane bagasse for xylose and xylo-oligosaccharide release

    Warren-Walker, D., Ravella, S. R., Gallagher, J., Winters, A., Charlton, A. & Bryant, D. N., 3 Meh 2024, (E-gyhoeddi cyn argraffu) Yn: Bioresource Technology. 405, 130932.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  50. E-gyhoeddi cyn argraffu

    Scandal in the voluntary carbon market must not impede tropical forest conservation

    Jones, J. P. G., 3 Meh 2024, (E-gyhoeddi cyn argraffu) Yn: Nature Ecology and Evolution.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  51. Cyhoeddwyd

    Are nitrification inhibitors effective in reducing N2O from farm-scale emission hotspots?

    Marsden, K., dos Santos, C. A., Freidl, J., Rowlings, D. W., Chadwick, D. & Eckard, R. J., 1 Meh 2024, Yn: Nutrient Cycling in Agroecosystems. 128, 3, t. 341-358 18 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

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