Ysgol Gwyddorau Amgylcheddol a Naturiol

  1. 2021
  2. Cyhoeddwyd

    Identifying barriers to routine soil testing within beef and sheep farming systems

    Rhymes, J., Wynne-Jones, S., Williams, P., Harris, I., Rose, D., Chadwick, D. & Jones, D. L., 15 Rhag 2021, Yn: Geoderma. 404, 115298.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  3. Cyhoeddwyd

    Pitfalls in international benchmarking of energy intensity across wastewater treatment utilities

    Walker, N., Williams, P. & Styles, D., 15 Rhag 2021, Yn: Journal of Environmental Management. 300, 10 t., 113613.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  4. Cyhoeddwyd

    Taxonomic and geographic bias in 50 years of research on the behaviour and ecology of galagids

    Ellison, G., Jones, M., Cain, B. & Bettridge, C., 15 Rhag 2021, Yn: PLoS ONE. 16, 12

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  5. Cyhoeddwyd

    New to Teaching Geography: A practical guide for higher education teaching assistants, teaching fellows and demonstrators.

    Yorke, L., Tate, S. & Davis, M., 13 Rhag 2021, Royal Society and Royal Geographical Society (with the Institute of British Geographers). 42 t.

    Allbwn ymchwil: Llyfr/AdroddiadLlyfradolygiad gan gymheiriaid

  6. Cyhoeddwyd

    The current and future uses of machine learning in ecosystem service research

    Scowen, M., Athanasiadis, I., Bullock, J., Eigenbrod, F. & Willcock, S., 10 Rhag 2021, Yn: Science of the Total Environment. 799, 33 t., 149263.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  7. Cyhoeddwyd

    Introducing a Calculator for the Environmental and Financial Potential of Drain Water Heat Recovery in Commercial Kitchens.

    Schestak, I., Spriet, J., Styles, D. & Williams, P., 7 Rhag 2021, Yn: Water. 13, 24, 14 t., 3486.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  8. Cyhoeddwyd

    Complex target SELEX-based identification of DNA aptamers against Bungarus caeruleus venom for the detection of envenomation using a paper-based device

    Anand, A., Chatterjee, B., Dhiman, A., Goel, R., Khan, E., Malhotra, A., Santra, V., Salvi, N., Bhatnagar, I., Kumar, A., Asthana, A. & Sharma, T. K., 1 Rhag 2021, Yn: Biosensors and Bioelectronics. 193, 113523.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  9. Cyhoeddwyd

    Disease monitoring and surveillance: case studies in the applied conservation of fragmented red squirrel (Sciurus vulgaris) populations in England and Wales

    Everest, D. J., Floyd, T., Holmes, P., Man, C., Dunnett, C., Locke, R., Savage, L., Sutcliffe, S., Sapsford, B., Shuttleworth, C. & Duff, P., 1 Rhag 2021, Yn: Mammalian Biology. 101, t. 1079-1088

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  10. Cyhoeddwyd

    Morphological, nutritional and medicinal traits of wild mango (Mangifera Sylvatica Roxb.): Implications for increased use and options for cultivar development

    Akhter, S., McDonald, M., Marriott, R., Jashimuddin, M. & Bashirul-Al-Mamund, M., 1 Rhag 2021, Yn: Trees, Forests and People. 6, 100126, 100126.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  11. Cyhoeddwyd

    Organic mulching promotes soil organic carbon accumulation to deep soil layer in an urban plantation forest

    Sun, X., Wang, G., Ma, Q., Liao, J., Wang, D., Guan, Q. & Jones, D. L., 1 Rhag 2021, Yn: Forest Ecosystems. 8, 1

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  12. Cyhoeddwyd

    Response of nitrogen fractions in the rhizosphere and bulk soil to organic mulching in an urban forest plantation

    Sun, X., Wang, G., Ye, Y., Ma, Q., Guan, Q. & Jones, D. L., 1 Rhag 2021, Yn: Journal of Forestry Research. 32, 6, t. 2577-2588

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  13. Cyhoeddwyd

    Revue des textes fonciers et forestiers pour la mise en œuvre de la restauration des paysages forestiers à Madagascar

    Rajaonarivelo, H. M., Rakotonarivo, S., Raharijoana, S., Raparison, E., Rakotoarisoa, M. & Hockley, N., 1 Rhag 2021, Yn: Madagascar Conservation and Development. 16, 1, t. 32-42

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  14. Cyhoeddwyd

    Topsoil and subsoil C and N turnover are affected by superficial lime and gypsum application in the short-term

    Barcelos, J. P. Q., Mariano, E., Jones, D. L. & Rosolem, C. A., 1 Rhag 2021, Yn: Soil Biology and Biochemistry. 163, 108456.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  15. Cyhoeddwyd

    Viviparous mothers impose stronger glucocorticoid-mediated maternal stress effects on their offspring than oviparous mothers

    MacLeod, K. J., While, G. M. & Uller, T., 1 Rhag 2021, Yn: Ecology and Evolution. 11, 23, t. 17238-17259

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  16. Cyhoeddwyd

    Wind of Change - Phage Cartoon by Ellie Jameson

    Jameson, E., 1 Rhag 2021, Yn: PHAGE (New Rochelle, N.Y.). 2, 4, t. 155

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygl

  17. Cyhoeddwyd

    Comparing spatial and temporal scales of hydrologic model parameter transfer: A guide to four climates of Iran

    Jahanshahi, A., Melsen, L., Patil, S. & Goharian, E., Rhag 2021, Yn: Journal of Hydrology. 603, Part C, 127099.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  18. Cyhoeddwyd

    Genomic signatures of admixture and selection are shared among populations of Zaprionus indianus across the western hemisphere

    Comeault, A., Kautt, A. F. & Matute, D. R., Rhag 2021, Yn: Molecular Ecology. 30, 23, t. 6193-6210 18 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  19. Cyhoeddwyd

    Guiding principles for rewilding

    Carver, S., Convery, I., Hawkins, S., Beyers, R., Eagle, A., Kun, Z., Van Maanen, E., Cao, Y., Fisher, M., Edwards, S. R., Nelson, C., Gann, G. D., Shurter, S., Aguilar, K., Andrade, A., Ripple, W. J., Davis, J., Sinclair, A., Berkoff, M., Noss, R., Foreman, D., Pettersson, H., Root-Bernstein, M., Svenning, J-C., Taylor, P., Wynne-Jones, S., Featherstone, A. W., Flojgaard, C., Stanley-Price, M., Navarro, L. M., Aykroyd, T., Parfitt, A. & Soule, M., Rhag 2021, Yn: Conservation Biology. 35, 6, t. 1882-1893

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  20. Cyhoeddwyd

    King or royal family? Testing for species boundaries in the King Cobra, Ophiophagus hannah (Cantor, 1836), using morphology and multilocus DNA analyses

    Gowri Shankar, P., Swamy, P., Williams, R. C., Ganesh, S. R., Moss, M., Höglund, J., Das, I., Sahoo, G., Vijayakumar, S. P., Shanker, K., Wüster, W. & Dutta, S. K., Rhag 2021, Yn: Molecular Phylogenetics and Evolution. 165, 107300, 63 t., 107300.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  21. Cyhoeddwyd

    Modelling the impact of climate change on the occurrence of frost damage in Sitka spruce (Picea sitchensis) in Great Britain

    Atucha Zamkova, A-A., Steele, K. & Smith, A., Rhag 2021, Yn: Forestry. 94, 5, t. 664-676 13 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  22. Cyhoeddwyd

    Runs of homozygosity in killer whale genomes provide a global record of demographic histories

    Foote, A. D., Hooper, R., Alexander, A., Baird, R. W., Baker, C. S., Ballance, L., Barlow, J., Brownlow, A., Collins, T., Constantine, R., Dalla Rosa, L., Davison, N. J., Durban, J. W., Esteban, R., Excoffier, L., Fordyce Martin, S. L., Forney, K. A., Gerrodette, T., Gilbert, M. T. P., Guinet, C., Hanson, M. B., Li, S., Martin, M. D., Robertson, K. M., Samarra, F. I. P., de Stephanis, R., Tavares, S. B., Tixier, P., Totterdell, J. A., Wade, P., Wolf, J. B. W., Fan, G., Zhang, Y. & Morin, P. A., Rhag 2021, Yn: Molecular Ecology. 30, 23, t. 6162-6177 16 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  23. Cyhoeddwyd

    The Eclosion of Forest and Tree Health Stakeholdership

    Dandy, N. & Porth, E. F., Rhag 2021, Yn: Environmental Values. 30, 6, t. 759-782

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  24. Cyhoeddwyd

    The short-lived inhibitory effect of Brachiaria humidicola on nitrous oxide emissions following sheep urine application in a highly nitrifying soil

    Ma, Y., Charteris, A. F., Loick, N., Cardenas, L. M., Sha, Z., Lopez-Aizpun, M., Chen, Q., Jones, D. L. & Chadwick, D. R., Rhag 2021, Yn: Journal of Plant Nutrition and Soil Science. 184, 6, t. 723-732 10 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  25. Cyhoeddwyd

    Drivers of predator killing by rural residents and recommendations for fostering coexistence in agricultural landscapes

    Galvez, N., St John, F. A. V. & Davies, Z. G., 18 Tach 2021, Yn: Frontiers in Conservation Science. 12 t., 712044.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  26. Cyhoeddwyd

    Carboplatin- and Etoposide-Loaded Lactoferrin Protein Nanoparticles for Targeting Cancer Stem Cells in Retinoblastoma In Vitro

    Narayana, R. V. L., Jana, P., Tomar, N., Prabhu, V., Nair, R. M., Manukonda, R., Kaliki, S., Coupland, S. E., Alexander, J., Kalirai, H., Kondapi, A. K. & Vemuganti, G. K., 16 Tach 2021, Yn: Investigative Ophthalmology & Visual Science. 62, 14, t. 13

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  27. Cyhoeddwyd

    Circadian dynamics of the teleost skin immune-microbiome interface

    Ellison, A., Wilcockson, D. & Cable, J., 16 Tach 2021, Yn: Microbiome. 9, 1, 18 t., 222.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  28. Cyhoeddwyd

    Site Specific Relationships between COVID-19 Cases and SARS-CoV-2 Viral Load in Wastewater Treatment Plant Influent

    Fitzgerald, S. F., Rossi, G., Low, A. S., McAteer, S. P., O'Keefe, B., Findlay, D., Cameron, G. J., Pollard, P., Singleton, P. T. R., Ponton, G., Singer, A. C., Farkas, K., Jones, D. L., Graham, D. W., Quintela-Baluja, M., Tait-Burkard, C., Gally, D. L., Kao, R. & Corbishley, A., 16 Tach 2021, Yn: Environmental Science and Technology. 55, 22, t. 15276-15286 11 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  29. Cyhoeddwyd

    Impacts of selective logging on Amazon forest canopy structure and biomass with a LiDAR and photogrammetric survey sequence

    d'Oliveira, M. V. N., Figueiredo, E. O., Almeida, D. R. A. D., Oliveira, L. C., Silva, C. A., Nelson, B. W., Cunha, R. M. D., Papa, D. D. A., Stark, S. C. & Valbuena, R., 15 Tach 2021, Yn: Forest Ecology and Management. 500, 119648.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  30. Cyhoeddwyd

    SNPs, InDels, and Microsatellites within and near to Rice NBS-LRR Resistance Gene Candidates

    Steele, K. & Quinton-Tulloch, M., 13 Tach 2021, Yn: Agronomy. 11, 11, 20 t., 2297.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  31. Cyhoeddwyd

    Concentration and Quantification of SARS-CoV-2 RNA in Wastewater Using Polyethylene Glycol-Based Concentration and qRT-PCR.(vol 4, 17, 2021)

    Farkas, K., Hillary, L. S., Thorpe, J., Walker, D. I., Lowther, J. A., McDonald, J. E., Malham, S. K. & Jones, D. L., 12 Tach 2021, Yn: Methods and Protocols. 4, 4

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  32. Cyhoeddwyd

    White-tailed deer found to be huge reservoir of coronavirus infection

    Shannon, G., Gresham, A. & Barton, O., 8 Tach 2021, The Conversation.

    Allbwn ymchwil: Cyfraniad at gyhoeddiad arbenigolErthygl

  33. Cyhoeddwyd

    Anatomy in Ancient China: How Acupuncture Meridians Were First Identified

    Shaw, V. & Winder, I. C., 3 Tach 2021, Yn: The AACP Journal. 33, 2, t. 11-18

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  34. Cyhoeddwyd

    Compensating for a stressful pregnancy? Glucocorticoid treatment during gravidity reduces metabolic rate in female fence lizards post-parturition

    MacLeod, K. J., Langkilde, T., Heppner, J. J., Howey, C. A. F., Sprayberry, K., Tylan, C. & Sheriff, M. J., 1 Tach 2021, Yn: Hormones and Behavior. 136

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  35. Cyhoeddwyd

    Promoting co-existence between humans and venomous snakes through increasing the herpetological knowledge base

    Malhotra, A., Wüster, W., Owens, J. B., Hodges, C. W., Jesudasan, A., Ch, G., Kartik, A., Christopher, P., Louies, J., Naik, H., Santra, V., Kuttalam, S. R., Attre, S., Sasa, M., Bravo-Vega, C. & Murray, K. A., 1 Tach 2021, Yn: Toxicon: X. 12, November 2021, 18 t., 10081.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  36. Cyhoeddwyd

    Relative efficacy and stability of biological and synthetic nitrification inhibitors in a highly nitrifying soil: Evidence of apparent nitrification inhibition by linoleic acid and linolenic acid

    Ma, Y., Jones, D. L., Wang, J., Cardenas, L. M. & Chadwick, D. R., 1 Tach 2021, Yn: European Journal of Soil Science. 72, 6, t. 2356-2371 16 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  37. Cyhoeddwyd

    The influence of maternal glucocorticoids on offspring phenotype in high- and low-risk environments

    MacLeod, K. J., Langkilde, T., Venable, C. P., Ensminger, D. C. & Sheriff, M. J., 1 Tach 2021, Yn: Behavioral Ecology. 32, 6, t. 1330-1338

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  38. Cyhoeddwyd

    A magnet attached to the forehead disrupts magnetic compass orientation in a migratory songbird

    Packmor, F., Kishkinev, D., Bittermann, F., Kofler, B., Machowetz, C., Zechmeister, T., Zawadzki, L., Guilford, T. & Holland, R., Tach 2021, Yn: Journal of Experimental Biology. 224, 22, 10 t., 243337.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  39. Cyhoeddwyd

    Decoupled richness of generalist anaerobes and sulphate-reducing bacteria is driven bypHacross land uses in temperate soils

    George, P. B. L., Coelho, K. P., Creer, S., Lebron, I., Robinson, D. A. & Jones, D. L., Tach 2021, Yn: European Journal of Soil Science. 72, 6, t. 2445-2456 12 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  40. Cyhoeddwyd

    Genomic evolution of the class Acidithiobacillia: deep-branching Proteobacteria living in extreme acidic conditions

    Moya-Beltrán, A., Beard, S., Rojas-Villalobos, C., Issotta, F., Gallardo, Y., Ulloa, R., Giaveno, A., Degli Esposti, M., Johnson, D. B. & Quatrini, R., Tach 2021, Yn: The ISME Journal. 15, 11, t. 3221-3238

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  41. Cyhoeddwyd

    Livestock-induced N2O emissions may limit the benefits of converting cropland to grazed grassland as a greenhouse gas mitigation strategy for agricultural peatlands

    Wen, Y., Freeman, B., Hunt, D., Musarika, S., Zang, H., Marsden, K. A., Evans, C. D., Chadwick, D. R. & Jones, D. L., Tach 2021, Yn: Resources, Conservation and Recycling. 174, 105764.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  42. Cyhoeddwyd

    Map of total phosphorus content in native soils of Brazil

    Pavinato, P. S., Rocha, G. C., Cherubin, M. R., Harris, I., Jones, D. L. & Withers, P. J. A., Tach 2021, Yn: Scientia Agricola. 78, 6

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  43. Cyhoeddwyd

    On pedagogy of a Soil Science Centre for Doctoral Training

    Haygarth, P. M., Lawrenson, O., Mezeli, M., Sayer, E. J., McCloskey, C. S., Evans, D. L., Kirk, G. J. D., Tye, A. M., Chadwick, D. R., McGrath, S. P., Mooney, S. J., Paterson, E., Robinson, D. A. & Jones, D. L., Tach 2021, Yn: European Journal of Soil Science. 72, 6, t. 2320-2329

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  44. Cyhoeddwyd

    Rare morph Lake Malawi mbuna cichlids benefit from reduced aggression from con- and hetero-specifics

    Tyers, A. M., Cooke, G. M. & Turner, G. F., Tach 2021, Yn: Journal of Evolutionary Biology. 34, 11, t. 1678-1690 13 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  45. Cyhoeddwyd

    River sediment geochemistry and provenance following the Mount Polley mine tailings spill, Canada: the role of hydraulic sorting and sediment dilution processes in contaminant dispersal and remediation

    Bird, G., Hudson-Edwards, K., Byrne, P., Macklin, M., Brewer, P. & Williams, R., Tach 2021, Yn: Applied Geochemistry. 134, 11 t., 105086.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  46. Cyhoeddwyd

    Soil health cluster analysis based on national monitoring of soil indicators

    Seaton, F. M., Barrett, G., Burden, A., Creer, S., Fitos, E., Garbutt, A., Griffiths, R. I., Henrys, P., Jones, D. L., Keenan, P., Keith, A., Lebron, I., Maskell, L., Pereira, M. G., Reinsch, S., Smart, S. M., Williams, B., Emmett, B. A. & Robinson, D. A., Tach 2021, Yn: European Journal of Soil Science. 72, 6, t. 2414-2429 16 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  47. Cyhoeddwyd

    Structural and biochemical insights into CRISPR RNA processing by the Cas5c ribonuclease SMU1763 from Streptococcus mutans

    Lemak, S., Serbanescu, M. A., Khusnutdinova, A. N., Ruszkowski, M., Beloglazova, N., Xu, X., Brown, G., Cui, H., Tan, K., Joachimiak, A., Cvitkovitch, D. G., Savchenko, A. & Yakunin, A., Tach 2021, Yn: Journal of Biological Chemistry. 297, 5, 101251.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  48. Cyhoeddwyd

    Substrate control of sulphur utilisation and microbial stoichiometry in soil: Results of 13C, 15N, 14C, and 35S quad labelling

    Ma, Q., Kuzyakov, Y., Pan, W., Tang, S., Chadwick, D. R., Wen, Y., Hill, P. W., Macdonald, A., Ge, T., Si, L., Wu, L. & Jones, D. L., Tach 2021, Yn: The ISME Journal. 15, 11, t. 3148-3158 11 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  49. Cyhoeddwyd

    The late pleistocene cave bear fauna of the Torrener Bärenhöhle in the northern alps (Salzburg, Austria)

    Doppes, D., Alberti, F., Barlow, A., Krutter, S., FRiedrich, R., Hofreiter, M., Lindauer, S., Kavcik-Graumann, N., Rosendahl, W. & Rabeder, G., Tach 2021, Yn: Historical Biology. 31, 4, t. 422-428

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  50. Cyhoeddwyd

    Contrasting selection pressure on body and weapon size in a polygynous megaherbivore

    Shannon, G., Sadler, P., Smith, J., Roylance-Casson, E. & Cordes, L., 31 Hyd 2021, Yn: Biology Letters. 17, 10

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  51. Cyhoeddwyd

    Integration of 5.8GHz Doppler Radar and Machine Learning for Automated Honeybee Hive Surveillance and Logging

    Aldabashi, N., Williams, S., Eltokhy, A., Palmer, E., Cross, P. & Palego, C., 27 Hyd 2021, 2021 IEEE MTT-S International Microwave Symposium (IMS). IEEE

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddCyfraniad i Gynhadleddadolygiad gan gymheiriaid