Ysgol Gwyddorau Amgylcheddol a Naturiol
- 2024
- Cyhoeddwyd
Climatic zone effects of non-native plant invasion on CH4 and N2O emissions from natural wetland ecosystems
Beyene, B. B., Li, J., Yuan, J., Liu, D., Chen, Z., Kim, J., Kang, H., Freeman, C. & Ding, W., 1 Ion 2024, Yn: Science of the Total Environment. 906, 167855.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Critical role of water conditions in the responses of autumn phenology of marsh wetlands to climate change on the Tibetan Plateau
Shen, X., Shen, M., Wu, C., Peñuelas, J., Ciais, P., Zhang, J., Freeman, C., Palmer, P. I., Liu, B., Henderson, M., Song, Z., Sun, S., Lu, X. & Jiang, M., 1 Ion 2024, Yn: Global Change Biology. 30, 1, e17097.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Fog controls biological cycling of soil phosphorus in the Coastal Cordillera of the Atacama Desert
Sun, X., Amelung, W., Klumpp, E., Walk, J., Mörchen, R., Böhm, C., Moradi, G., May, S. M., Tamburini, F., Wang, Y. & Bol, R., 1 Ion 2024, Yn: Global Change Biology. 30, 1, t. e17068Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Host Plant Effects on Sexual Selection Dynamics in Phytophagous Insects
Jarrett, B. & Miller, C., 1 Ion 2024, Yn: Annual Review of Entomology. 69, t. 41-57Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Plasticity of microbial substrate carbon use efficiency in response to changes in plant carbon input and soil organic matter status
Brown, R. & Jones, D. L., 1 Ion 2024, Yn: Soil Biology and Biochemistry. 188, 109230.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Quantifying synergies and trade-offs in the food-energy-soil-environment nexus under organic fertilization
Xu, Y., Luo, B., Jia, R., Xiao, J., Wang, X., Yang, Y., Xue, S., Zeng, Z., Brown, R. & Zang, H., 1 Ion 2024, Yn: Journal of Environmental Management. 349, 119526.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Respiration and carbon use efficiency characteristics of soluble protein-derived carbon by soil microorganisms: A case study at afforested sites
Gao, L., Smith, A., Jones, D. L., Lui, B., Guo, Y., Cui, X. & Hill, P., 1 Ion 2024, Yn: Soil Biology and Biochemistry. 109255.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Land management shapes drought responses of dominant soil microbial taxa across grasslands
Lavallee, J. M., Chomel, M., Alvarez Segura, N., de Castro, F., Goodall, T., Magilton, M., Rhymes, J. M., Delgado-Baquerizo, M., Griffiths, R. I., Baggs, E. M., Caruso, T., de Vries, F. T., Emmerson, M., Johnson, D. & Bardgett, R. D., 2 Ion 2024, Yn: Nature Communications. 15, 1, t. 29Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Nest architecture influences host use by avian brood parasites and is shaped by coevolutionary dynamics
Hauber, M. E., Nagy, J., Sheard, C., Antonson, N. D., Street, S. E., Healy, S. D., Lala, K. L. & Mainwaring, M. C., 10 Ion 2024, Yn: Proceedings of the Royal Society B.. 291, 20231734.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Molecular ecology of microbiomes in the wild: Common pitfalls, methodological advances and future directions
Fountain-Jones, N. M., Giraud, T., Zinger, L., Bik, H., Creer, S. & Videvall, E., 12 Ion 2024, Yn: Molecular Ecology. 33, 2, e1723.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Bacillus indicus and Bacillus subtilis as alternative health and colouration promoters to synthetic astaxanthin in cyprinid aquaculture species.
Baumgärtner, S., Creer, S., Jones, C., James, J. & Ellison, A., 15 Ion 2024, Yn: Aquaculture. 578, 740016.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Chronic ozone exposure affects nitrogen remobilization in wheat at key growth stages
Brewster, C., Fenner, N. & Hayes, F., 15 Ion 2024, Yn: Science of the Total Environment. 168288.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Recent increase in species-wide diversity after interspecies introgression in the highly endangered Iberian lynx
Lucena-Perez, M., Paijmans, J., Nocete, F., Nadal, J., Detry, C., Dalén, L., Hofreiter, M., Barlow, A. & Godoy, J., 15 Ion 2024, Yn: Nature Ecology and Evolution.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Interview completed: the application of survival analysis to detect factors influencing response rates in online surveys
Münnich, Á., Kocsis, M., Mainwaring, M. C., Fónagy, I. & Nagy, J., 18 Ion 2024, Yn: Journal of Marketing Analytics. 291, t. 202-217 20231734.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Design considerations for eDNA metabarcoding surveys
Perry, W. B., Pillay, K., George, P., Brennan, G., Lowe, A., Jones, L., Holman, L., Gibson, T., de Vere, N. & Creer, S., 19 Ion 2024, Applied Environmental Genomics. Berry, O. F., Holleley, C. E. & Jarman, S. N. (gol.). CRC PressAllbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid
- Cyhoeddwyd
Response of soil micro-food web to nutrient limitation along a subtropical forest restoration
Gao, D., Liu, S., Gao, F., Ning, C., Wu, X., Yan, W. & Smith, A., 20 Ion 2024, Yn: Science of the Total Environment. 909, 168349, 168349.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Aboveground carbon sequestration of Cunninghamia lanceolata forests: Magnitude and drivers
Wang, C., Liu, S., Zhu, Y., Smith, A., Ning, Y. & Deng, D., 24 Ion 2024, Yn: Forest Ecosystems. 100165.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Hundreds of millions of people in the tropics need both wild harvests and other forms of economic development for their well-being
Wells, G. J., Ryan, C. M., Das, A., Attiwilli, S., Poudyal, M., Lele, S., Schreckenberg, K., Robinson, B. E., Keane, A., Homewood, K. M., Jones, J. P. G., Torres-Vitolas, C. A., Fisher, J. A., Ahmad, S., Mulligan, M., Dawson, T. P., Adams, H., Setty, R. S. & Daw, T. M., Chwef 2024, Yn: One Earth. 7, 2, t. 311-324 14 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Agronomic amendments drive a diversity of real and apparent priming responses within a grassland soil
Brown, R., Reed, E., Chadwick, D., Hill, P. & Jones, D. L., 1 Chwef 2024, Yn: Soil Biology and Biochemistry. 189, 109265.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Lateglacial and early Holocene evolution of the Tyne Valley in response to climatic shifts and possible paraglacial landscape legacies
Yorke, L., Chiverrell, R. & Schwenninger, J.-L., 1 Chwef 2024, Yn: Geomorphology. 446, 109007.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
The threat of Peters’s Rock Agama (Agama picticauda) to reptile diversity across the Lesser Antilles
van den Burg, M., Wasilewski, J. A., Thorpe, R., Debrot, A. O., Daltry, J. C., Angin, B., Boman, E. M., Brannon, L., Corbett, E. A., Horrocks, J. A., Mukhida, F., Paranthoen, N., Pascoe, N. K., Petrovic, C., Verhoeven, A. & Yokoyama, M., 1 Chwef 2024, Yn: Animal Conservation. 27, 1, t. 1-4 4 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Understanding the links between well-being and rule breaking around protected areas
Ibbett, H., Dorward, L., Dwiyahreni, A. A., Kohi, E. M. & St. John, F. A. V., 1 Chwef 2024Allbwn ymchwil: Cyfraniad arall › Cyfraniad Arall
- E-gyhoeddi cyn argraffu
Co(II)-doped hybrid Zn(II) tetraborate complexes, [ZnxCo(1-x)(1,3-dap)B4O7] (1,3-dap = 1,3-diaminopropane): BET analysis and N2/H2O/D2O adsorption studies
Liu, L., Pan, C.-Y., He, Y., Zhong, L.-J. & Beckett, M., 5 Chwef 2024, (E-gyhoeddi cyn argraffu) Yn: Dalton Transactions. 53, 10, t. 4637-4642 6 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Changes in bacterial communities during rice cultivation remove phenolic constraints on peatland carbon preservation
Qin, L., Tian, W., Freeman, C., Jia, Z., Yin, X., Gao, C., Zou, Y. & Jiang, M., 6 Chwef 2024, Yn: ISME Communications. 4, 1, ycae022.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Potential types of bias when estimating causal effects in environmental research and how to interpret them
Konno, K., Gibbons, J., Lewis, R. & Pullin, A., 7 Chwef 2024, Yn: Environmental Evidence. 13, 1, 1.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Significant differences in the caecal bacterial microbiota of red and grey squirrels in Britain
Hall, L., Nichols, C., Leng, J., Martelli, F., Shuttleworth, C. & La Ragione, R., 14 Chwef 2024, Yn: Journal of Medical Microbiology. 73, 2Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- E-gyhoeddi cyn argraffu
Toward the integration of speciation research
Stankowski, S., Cutter, A. D., Satokangas, I., Lerch, B. A., Rolland, J., Smadja, C. M., Marzal, J. C. S., Cooney, C. R., Feulner, P. G. D., Domingos, F. M. C. B., North, H. L., Yamaguchi, R., Butlin, R. K., Wolf, J. B. W., Coughlan, J., Heidbreder, P., Hernandez-Guttierrez, R., Barnard-Kubow, K. B., Peede, D., Rancilhac, L., Salvador, R. B., Thompson, K. A., Stacy, E. A., Moyle, L. C., Garlovsky, M. D., Maulana, A., Kantelinen, A., Cacho, N. I., Schneemann, H., Dominguez, M., Dopman, E. B., Lohsa, K., Rometsch, S. J., Comeault, A., Merrill, R. M., Scordato, E. S. C., Singhal, S., Parssinen, V., Lackey, A. C. R., Kumar, S., Meier, J. I., Barton, N., Fraisse, C., Ravinet, M. & Kulumni, J., 16 Chwef 2024, (E-gyhoeddi cyn argraffu) Yn: Evolutionary Journal of the Linnean Society. 3, 1Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl adolygu › adolygiad gan gymheiriaid
- Cyhoeddwyd
Gut bacteria may explain why grey squirrels outcompete reds – new research
Shuttleworth, C., 20 Chwef 2024, The Conversation.Allbwn ymchwil: Cyfraniad at gyhoeddiad arbenigol › Erthygl
- Cyhoeddwyd
One Health: Circadian Medicine Benefits Both Non-human Animals and Humans Alike
Farag, H., Murphy, B., Templeman, J., Hanlon, C., Joshua, J., Koch, T., Niel, L., Shoveller, A., Bedecarrats, G., Ellison, A., Wilcockson, D. & Martino, T., 20 Chwef 2024, Yn: Journal of Biological Rhythms. 39, 3, t. 237-269 33 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl adolygu › adolygiad gan gymheiriaid
- Cyhoeddwyd
Protected areas and people: Understanding the links between well-being and rule breaking around the Leuser Ecosystem
Ibbett, H., Dorward, L. & St. John, F. A. V., 20 Chwef 2024Allbwn ymchwil: Cyfraniad arall › Cyfraniad Arall
- Cyhoeddwyd
The nutritional value of meat should be considered when comparing the carbon footprint of lambs produced on different finishing diets
McNicol, L., Perkins, L., Gibbons, J., Scollan, N. D., Nugent, A., Thomas, E., Swancott, E., McRoberts, C., White, A., Chambers, S., Farmer, L. & Williams, P., 20 Chwef 2024, Yn: Frontiers in Sustainable Food Systems. 8, 1321288.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Nature’s contribution to poverty alleviation, human wellbeing and the SDGs
Poudyal, M., Kraft, F., Wells, G., Das, A., Attiwilli, S., Schreckenberg, K., Lele, S., Daw, T., Torres-Vitolas, C., Setty, S., Adams, H., Ahmad, S., Ryan, C., Fisher, J., Robinson, B., Jones, J. P. G., Homewood, K., Bluwstein, J., Keane, A., Macamo, C. & Mugi, L. M., 22 Chwef 2024, Yn: Scientific data. 11, 1, t. 229 229.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Plumage and eggshell colouration covary with the level of sex-specific parental contributions to nest building in birds
Nagy, J., Hauber, M. E., Löki, V. & Mainwaring, M. C., 27 Chwef 2024, Yn: The Science of Nature. 111, 12.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Restless nights when sick: ectoparasite infections alter rest-activity cycles of diurnal fish hosts
Arapi, E., Reynolds, M., Ellison, A. & Cable, J., Maw 2024, Yn: Parasitology. 151, 3, t. 251-259 9 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
A review of bovine tuberculosis transmission risk in European wildlife communities
Justus, W., Valle, S., Barton, O., Gresham, A. & Shannon, G., 1 Maw 2024, Yn: Mammal Review. 54, 3, t. 325-340 16 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Net Zero requires ambitious greenhouse gas emission reductions on beef and sheep farms coordinated with afforestation and other land use change measures
McNicol, L., Williams, N., Chadwick, D., Styles, D., Rees, R. M., Ramsey, R. & Williams, P., 1 Maw 2024, Yn: Agricultural Systems. 215, 103852, 103852.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Species-specific effects of mycorrhizal symbiosis on Populus trichocarpa after a lethal dose of copper
Soltangheisi, A., Hales-Henao, A., Pena, R. & Tibbett, M., 1 Maw 2024, Yn: Ecotoxicology and Environmental Safety. 272, 116112.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
First report of clinically significant bites due to Platyceps ventromaculatus (GRAY, 1834) from Thar Desert region, Rajasthan, India
Kumar PH, A., Kuttalam, S. R., Tanwar, D., Choudhary, B., Garg, M. & Gopalakrishnan, M., 2 Maw 2024, Yn: Toxicon. 240, 107638.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- E-gyhoeddi cyn argraffu
Comparative assessment of Nanotrap and polyethylene glycol-based virus concentration in wastewater samples
Farkas, K., Kevill, J. L., Williams, R. C., Pântea, I., Ridding, N., Lambert-Slosarska, K., Woodhall, N., Grimsley, J. M. S., Wade, M. J., Singer, A. C., Weightman, A. J., Cross, G. & Jones, D. L., 5 Maw 2024, (E-gyhoeddi cyn argraffu) Yn: FEMS microbes. 5, xtae007.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Improving well-being and reducing deforestation in Indonesia's protected areas
Morgans, C. L., Jago, S., Andayani, N., Linkie, M., Lo, M. G. Y., Mumbunan, S., St. John, F. A. V., Supriatna, J., Voigt, M., Winarni, N., Santika, T. & Struebig, M., 6 Maw 2024, Yn: Conservation Letters. 17, 3, t. 1 11 t., e13010.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- E-gyhoeddi cyn argraffu
Co-benefits for net carbon emissions and rice yields through improved management of organic nitrogen and water
Liu, B., Guo, C., Xu, J., Zhao, Q., Chadwick, D., Gao, X., Zhou, F., Lakshmanan, P., Wang, X., Guan, X., Zhao, H., Fang, L., Li, S., Bai, Z., Ma, L., Chen, X., Cui, Z., Shi, X., Zhang, F., Chen, X. & Li, Z., 14 Maw 2024, (E-gyhoeddi cyn argraffu) Yn: Nature Food. 5, t. 241-250 9 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- E-gyhoeddi cyn argraffu
Intraspecific functional traits and stable isotope signatures of ground-dwelling ants across an elevational gradient
He, X., Liu, S., Nakamura, A., Ellwood, M. D. F., Zhou, S., Xing, S., Li, Y. & Wen, D., 14 Maw 2024, (E-gyhoeddi cyn argraffu) Yn: Soil Ecology Letters. 6, 4Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Preclinical Evaluation of the Neutralising Efficacy of Three Monospecific Antivenoms Against the Venoms of Five African Echis Species, Including the Recently Partitioned E. ocellatus and E. romani
Edge, R. J., Marriott, A. E., Keen, M., Xie, T., Crittenden, E., Dawson, C. A., Wilkinson, M. C., Wüster, W., Casewell, N. R., Ainsworth, S. & Menzies, S. K., 19 Maw 2024, Social Science Research Network (SSRN), t. 1, 37 t.Allbwn ymchwil: Papur gweithio › Rhagargraffiad
- Cyhoeddwyd
Responding to the UN sustainability goals in transdisciplinary partnership through network action learning
Dreyer-Gibney, K., Coughlan, P., Coghlan, D., Wu, S.-H., Bello-Dambatta, A., Dallison, R., McNabola, A., Novara, D., Rafique, A., Schestak, I., Spriet, J., Walker, N. & Williams, P., 20 Maw 2024, Yn: Environment, Development and Sustainability.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- E-gyhoeddi cyn argraffu
The power of citizen science to advance fungal conservation
Haelewaters, D., Quandt, C. A., Bartrop, L., Cazabonne, J., Crockatt, M. E., Cunha, S. P., De Lange, R., Dominici, L., Douglas, B., Drechsler-Santos, E. R., Heilmann-Clausen, J., Irga, P. J., Jakob, S., Lofgren, L., Martin, T. E., Muchane, M. N., Stallman, J. K., Verbeken, A., Walker, A. K. & Gonçalves, S. C., 22 Maw 2024, (E-gyhoeddi cyn argraffu) Yn: Conservation Letters. 17, 3, t. e13013Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl adolygu › adolygiad gan gymheiriaid
- Cyhoeddwyd
Integrated distance sampling models for simple point counts
Kery, M., Royle, J. A., Hallman, T., Robinson, W. D., Strebel, N. & Kellner, K. F., 27 Maw 2024, Yn: Ecology. 105, 5, e4292.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Wedi ei Dderbyn / Yn y wasg
Can spirituality save centuries-old trees and forests? A study from the mountains of NW Greece
Stara, K., Tsiakiris, R., Wong, J., Healey, J., Marini Govigli, V. & Halley, J., 29 Maw 2024, (Wedi ei Dderbyn / Yn y wasg) Yn: Zygon: Journal of Religion and Science.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Climate change disrupts the seasonal coupling of plant and soil microbial nutrient cycling in an alpine ecosystem
Broadbent, A. A. D., Newbold, L. K., Pritchard, W. J., Michas, A., Goodall, T., Cordero, I., Giunta, A., Snell, H. S. K., Pepper, V. V. L. H., Grant, H. K., Soto, D. X., Kaufmann, R., Schloter, M., Griffiths, R. I., Bahn, M. & Bardgett, R. D., 30 Maw 2024, Yn: Global Change Biology. 30, 3, t. e17245Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
The effect of observing trained conspecifics on the performance and motivation of goldfish, Carassius auratus, in a spatial task
Blane, J. C. & Holland, R. A., Ebr 2024, Yn: Behavioural Processes. 217, 105021.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Anthropogenic material in pied flycatcher (Ficedula hypoleuca) nests varies with local habitat features and between nest sections
Briggs, K. B. & Mainwaring, M. C., 1 Ebr 2024, Yn: Environmental Advances. 291, 100486.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid