Ysgol Gwyddorau Amgylcheddol a Naturiol
- Cyhoeddwyd
Modelling farmer decision-making: concepts, progress and challenges.
Edwards-Jones, G., 1 Rhag 2006, Yn: Animal Science. 82, 6, t. 783-790Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Ecological economics: an introduction.
Edwards-Jones, G., Davies, B. & Hussain, S., 1 Ion 2000, Wiley-Blackwell.Allbwn ymchwil: Llyfr/Adroddiad › Llyfr
- Cyhoeddwyd
Agricultural policy and environment in Syria: the cases of rangeland grazing and soil management.
Edwards-Jones, G., Fiorillo, C. (gol.) & Vercueil, J. (gol.), 1 Ion 2003, Syrian agriculture at the crossroads.. 2003 gol. Policy Assistance Division, Food and Agriculture Organization of the United Nations, t. Chapter 5Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Do benefits accrue to 'pest control' or 'pesticides?': A comment on Cooper and Dobson.
Edwards-Jones, G., 1 Meh 2008, Yn: Crop Protection. 27, 6, t. 965-967Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Ecological economics of nature conservation.
Edwards-Jones, G., Groom, M. J. (gol.), Meffe, G. K. (gol.) & Carroll, C. R. (gol.), 1 Ion 2005, Principles of Conservation Biology. 2005 gol. Sinauer Associates, t. 137-169Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Agricultural policy and the environment in Syria: An examination of impacts and suggestions for policy reform
Edwards-Jones, G., 1 Ion 2001, 2001 gol. Unknown.Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn
- Cyhoeddwyd
Interactions between landscape and the rural economy in Monmouthshire: perspectives from the LANDMAP process.2. Rural economy stakeholder perception study
Edwards-Jones, E., Edwards-Jones, G., Harris, I. M. & Packwood, A. J., 1 Ion 2001, 2001 gol. Unknown.Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn
- Cyhoeddwyd
Interactions between landscape and the rural economy in Monmouthshire: perspectives from the LANDMAP process.1. Map base analysis
Edwards-Jones, G., Harris, I. M., Packwood, A. J. & Edwards-Jones, E., 1 Ion 2001, 2001 gol. Unknown.Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn
- Cyhoeddwyd
Carbon footprinting of lamb and beef production systems: insights from an empirical analysis of farms in Wales UK.
Edwards-Jones, G., Plassmann, K. & Harris, I. M., 1 Rhag 2009, Yn: Journal of Agricultural Science. 147, 6, t. 707-719Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Genome Sequence of the Acidophilic Ferrous Iron-Oxidizing Isolate Acidithrix ferrooxidans Strain Py-F3, the Proposed Type Strain of the Novel Actinobacterial Genus Acidithrix
Eisen, S., Poehlein, A., Johnson, D. B., Daniel, R., Schlömann, M. & Mühling, M., 30 Ebr 2015, Yn: Genome Announcements. 3, 2Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Genome Sequence of the Acidophilic Iron Oxidizer Ferrimicrobium acidiphilum Strain T23T
Eisen, S., Poehlein, A., Johnson, D. B., Daniel, R., Schlömann, M. & Mühling, M., 30 Ebr 2015, Yn: Genome Announcements. 3, 2Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Elevated fires during COVID-19 lockdown and the vulnerability of protected areas
Eklund, J., Jones, J. P. G., Räsänen, M., Geldmann, J., Jokinen, A-P., Pellegrini, A., Rakotobe, D., Rakotonarivo, O. S., Toivonen, T. & Balmford, A., Gorff 2022, Yn: Nature Sustainability . 5, 7, t. 603-609Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
New information on the distribution, status and conservation of terrestrial bird species in Grande Terre, New Caledonia.
Ekstrom, J. M., Jones, J. P. G., Willis, J., Tobias, J., Dutson, G. & Barre, N., 1 Ion 2002, Yn: Emu. 102, 20, t. 197-207Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Lutispora saccharofermentans sp. nov., a mesophilic, non-spore-forming bacterium isolated from a lab-scale methanogenic landfill bioreactor digesting anaerobic sludge, and emendation of the genus Lutispora to include species which are non-spore-forming and mesophilic
El Houari, A., Carpenter, M., Chaplin, D., Golyshin, P. & McDonald, J. E., Chwef 2023, Yn: International Journal of Systematic Evolutionary Microbiology. 73, 1, 005683.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Does size matter for horny beetles? A geometric morphometric analysis of interspecific and intersexual size and shape variation in Colophon haughtoni Barnard, 1929, and C. kawaii Mizukami, 1997 (Coleoptera: Lucanidae).
Eldred, T., Meloro, C., Scholtz, C., Murphy, D., Fincken, K. & Hayward, M., Rhag 2016, Yn: Organisms Diversity and Evolution. 16, 4, t. 821-833Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Soil foraging animals alter the composition and co-occurrence of microbial communities in a desert shrubland
Eldridge, D. J., Woodhouse, J., Curlevski, N., Hayward, M. W., Brown, M. & Neilan, B., 1 Mai 2015, Yn: The ISME Journal. 9, 12, t. 2671-2681Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Ten people-centered rules for socially sustainable ecosystem restoration
Elias, M., Kandel, M., Mansourian, S., Meinzen-Dick, R., Crossland, M., Joshi, D., Kariuki, J., Lee, L. C., McElwee, P., Sen, A., Sigman, E., Singh, R., Adamczyk, E. M., Addoah, T., Agaba, G., Alare, R. S., Anderson, W., Arulingam, I., Bellis, SG. K. V., Birner, R., De Silva, S., Dubois, M., Duraisami, M., Featherstone, M., Gallant, B., Hakhu, A., Irvine, R., Kiura, E., Magaju, C., McDougall, C., McNeill, G. D., Nagendra, H., Nghi, T. H., Okamoto, D. K., Valencia, A. M. P., Pagella, T., Pontier, O., Post, M., Saunders, G. W., Schreckenberg, K., Shelar, K., Sinclair, F., Gautam, R. S., Spindel, N. B., Unnikrishnan, H., Wilson, G. T. G. N. N. & Winowiecki, L., 1 Mai 2022, Yn: Restoration Ecology. 30, 4, e13574.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Hysterangium bonobo: A newly described truffle species that is eaten by bonobos in the Democratic Republic of Congo
Elliott, T., Georgiev, A. V., Lotana Lokasola, A. & Smith, M., 1 Tach 2020, Yn: Mycologia. 112, 6, t. 1203-1211 9 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
An evaluation of the nomina for death adders (Acanthophis Daudin, 1803) proposed by Wells & Wellington (1985), and confirmation of A. cryptamydros Maddock et al., 2015 as the valid name for the Kimberley death adder
Ellis, R. J., Kaiser, H., Maddock, S., Doughty, P. & Wüster, W., 29 Meh 2021, Yn: Zootaxa. 4995, 1, t. 161–172 12 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
MOCVD of highly conductive CdO thin films.
Ellis, D. M. & Irvine, S. J., 1 Meh 2004, Yn: Journal of Materials Science: Materials in Electronics. 15, 6, t. 369-372Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
The interactive effects of elevated carbon dioxide and water table draw-down on carbon cycling in a Welsh ombrotrophic bog.
Ellis, T., Hill, P. W., Fenner, N., Williams, G. G., Godbold, D. & Freeman, C., 1 Meh 2009, Yn: Ecological Engineering. 35, 6, t. 978-986Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Temperature-mediated shifts in salamander transcriptomic responses to the amphibian-killing fungus
Ellison, A., Zamudio, K. R., Lips, K. R. & Muletz-Wolz, C., 31 Ion 2020, Yn: Molecular Ecology. 29, 2, t. 325-343 19 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- 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, 12Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Comparative transcriptomics reveal conserved impacts of rearing density on immune response of two important aquaculture species
Ellison, A., Uren Webster, T. M., Rodriguez-Barreto, D., Garcia de Leaniz, C., Consuegra, S., Orozco-terWengel, P. & Cable, J., Medi 2020, Yn: Fish and Shellfish Immunology. 104, t. 192-201Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
The more-than-economic dimensions of cooperation in food production
Emery, S., Wynne-Jones, S. & Forney, J., Gorff 2017, Yn: Journal of Rural Studies. 53, t. 229-238Allbwn ymchwil: Cyfraniad at gyfnodolyn › Golygyddiad
- Cyhoeddwyd
Integrated Analysis. Report 10a:Integrated Analysis. Report to Welsh Government (Contract C210/2016/2017).
Emmett, B. A., Alison, J., Braban, C., Dickie, I., Gunn, I. D. M., Healey, J., Jenkins, T., Jones, L., Keenleyside, C. B., Lewis-Reddy, E., Martineau, A. H., Newell-Price, J. P., Old, G. H., Pagella, T., Siriwardena, G. M., Williams, A. P. & Williams, J. R., 8 Gorff 2019, Centre for Ecology & Hydrology . 27 t. ( Environment and Rural Affairs Monitoring & Modelling Programme (ERAMMP): Sustainable Farming Scheme Evidence Review)Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn
- Cyhoeddwyd
Spatial patterns and environmental constraints on ecosystem services at a catchment scale
Emmett, B., Cooper, D., Smart, S., Jackson, B., Thomas, A., Cosby, B., Evans, C., Glanville, H., McDonald, J., Malham, S., Marshall, M., Jarvis, S., Rajko-Nenow, P., Webb, G. P., Ward, S., Rowe, E., Jones, L., Vanbergen, E. J., Keith, A., Carter, H., Pereira, M. G., Hughes, S., Lebron, I., Wade, A. & Jones, D., 1 Rhag 2016, Yn: Science of the Total Environment. 572, t. 1586-1600Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
A novel biologically-based approach to evaluating soil phosphorus availability across complex landscapes
Emmett, B., DeLuca, T. H., Glanville, H. C., Harris, M., Emmett, B. A., Pingree, M. R., de Sosa, L. L., Cerda-Moreno, C. & Jones, D. L., 2 Meh 2015, Yn: Soil Biology and Biochemistry. 88, t. 110-119Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Environment and Rural Affairs Monitoring & Modelling Programme (ERAMMP): ERAMMP Report 32: National Forest in Wales - Evidence Review: Annex 7, Integrated Assessment. Report to Welsh Government (Contract C210/2016/2017).
Emmett, B. A., Healey, J., Warren-Thomas, E. & Wong, J., 28 Awst 2020, Centre for Ecology & Hydrology . 14 t.Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn › adolygiad gan gymheiriaid
- Cyhoeddwyd
Report 10b: Considerations for the new scheme. Report to Welsh Government (Contract C210/2016/2017).
Emmett, B. A., Alison, J., Braban, C., Dickie, I., Gunn, I. D. M., Healey, J., Jenkins, T., Jones, L., Keenleyside, C. B., Martineau, A. H., Newell-Price, P., Old, G. H., Pagella, T., Siriwardena, G. M., Williams, A. G., Williams, P. & Williams, J. R., 10 Gorff 2019, Centre for Ecology & Hydrology . 23 t. (Environment and Rural Affairs Monitoring & Modelling Programme (ERAMMP): Sustainable Farming Scheme Evidence Review. )Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn
- Cyhoeddwyd
A multispecies BCO2 beak color polymorphism in the Darwin’s finch radiation
Enbody, E., Sprehn, C. G., Abzhanov, A., Bi, H., Dobreva, M. P., Osborne, O., Rubin, C-J., Grant, P., Grant, B. R. & Andersson, L., 22 Hyd 2021, Yn: Current Biology. 31, 24, t. 5597-5604Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Maternal stress alters the phenotype of the mother, her eggs and her offspring in a wild-caught lizard
Ensminger, D. C., Langkilde, T., Owen, D. A. S., MacLeod, K. J. & Sheriff, M. J., 1 Tach 2018, Yn: Journal of Animal Ecology. 87, 6, t. 1685-1697Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Infrared Spectroscopy of Fragments of Protonated Peptides: Direct Evidence for Macrocyclic Structures of b5 Ions
Erlekam, U., Bythell, B. J., Scuderi, D., Van Stipdonk, M., Paizs, B. & Maître, P., 28 Gorff 2009, Yn: Journal of the American Chemical Society. 131, 32, t. 11503-11508Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Sea-Ice Bacteria Halomonas sp. Strain 363 and Paracoccus sp. Strain 392 Produce Multiple Types of Poly-3-Hydroxyalkaonoic Acid (PHA) Storage Polymers at Low Temperature
Eronen-Rasimus, E., Hultman, J., Hai, T., Pessi, L. S., Wright, S., Laine, P., Viitamaki, S., Lyra, C., Thomas, D. N., Golyshin, P., Luhtanen, A. M., Kuosa, H. & Kaartokallio, H., 11 Awst 2021, Yn: Applied and Environmental Microbiology. 87, 17, e00929-21.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Phenoloxidase activity and organic carbon dynamics in historic Anthrosols in Scotland, UK
Esiana, B. O. I., Coates, C. J., Adderley, W. P., Berns, A. E. & Bol, R., 27 Hyd 2021, Yn: PLoS ONE. 16, 10, e0259205.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Bacterial Adaptation to Venom in Snakes and Arachnida
Esmaeilishirazifard, E., Usher, L., Trim, C., Sangal, V., Tyson, G. F., Barlow, A., Redway, K. F., Taylor, J. D., Kremida-Vlachou, M., Davies, S., Loftus, T. D., Lock, M. M. G., Wright, K., Dalby, A., Snyder, L. A. S., Wüster, W., Trim, S. & Moschos, S. A., 29 Meh 2022, Yn: Microbiology Spectrum. 10, 3, 16 t., e0240821.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Contrasting vulnerability of drained tropical and high-latitude peatlands to fluvial loss of stored carbon
Evans, C. D., Page, S. E., Jones, T., Moore, S., Gauci, V., Laiho, R., Hruska, J., Allot, T. E., Billet, M. F., Tipping, E., Freeman, C. & Garnett, M. H., 13 Tach 2014, Yn: Global Biogeochemical Cycles. 28, 11, t. 1215-1234Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
A biomimetic approach to the cylindrospermopsin alkaloids
Evans, D. M. & Murphy, P. J., 21 Maw 2011, Yn: Chemical Communications. 47, 11, t. 3225-3226 2 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Climate change - Terrestrial export of organic carbon - Reply
Evans, C. D., Freeman, C., Monteith, D. T., Reynolds, B. & Fenner, N., 21 Chwef 2002, Yn: Nature. 415, 6874, t. 862Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
DOC export and carbon loss from UK upland soils: similarities and differences between peats and organo-mineral soils.
Evans, C., Freeman, C., Billett, M., Clark, J. M., Tobermann, H., Chapman, P., Cork, L. G., Reynolds, B. & Thomas, D. N., 1 Ion 2007.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
Environmental DNA for Wildlife Biology and Biodiversity Monitoring
Evans, A. R., Bohmann, K., Evans, A., Gilbert, M. T., Carvalho, G. R., Creer, S., Knapp, M., Yu, D. W. & De Bruyn, M., 10 Mai 2014, Yn: Trends in Ecology and Evolution. 29, 6, t. 358-367Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Testing the relative sensitivity of 102 ecological variables as indicators of woodland condition in the New Forest, UK
Evans, P. M., Newton, A. C., Cantarello, E., Sanderson, N., Jones, D. L., Barsoum, N., Cottrell, J. E., A'Hara, S. W. & Fuller, L., Rhag 2019, Yn: Ecological Indicators. 107, 105575.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Overriding water table control on managed peatland greenhouse gas emissions
Evans, C. D., Peacock, M., Baird, A. J., Artz, R. R. E., Burden, A., Callaghan, N., Chapman, P. J., Cooper, H. M., Coyle, M., Craig, E., Cumming, A., Dixon, S., Gauci, V., Grayson, R. P., Helfter, C., Heppell, C. M., Holden, J., Jones, D. L., Kaduk, J., Levy, P., Matthews, R., McNamara, N. P., Misselbrook, T., Oakley, S., Page, S. E., Rayment, M., Ridley, L., Stanley, K. M., Williamson, J. L., Worrall, F. & Morrison, R., 27 Mai 2021, Yn: Nature. 593, t. 548-552Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Synthetic Route to 1,1′,2,2′-Tetraiodoferrocene That Avoids Isomerization and the Electrochemistry of Some Tetrahaloferrocenes
Evans, D. M., Hughes, D. D., Murphy, P. J., Horton, P. N., Coles, S. J., de Biani, F. F., Corsini, M. & Butler, I. R., 9 Awst 2021, Yn: Organometalics. 40, 15, t. 2496-2503 8 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Final report on project SP1210: Lowland peatland systems in England and Wales – evaluating greenhouse gas fluxes and carbon balances
Evans, C., Morrison, R., Burden, A., Williamson, J., Baird, A., Brown, E., Callahan, N., Chapman, P., Cumming, A., Dean, H., Dixon, S., Dooling, G., Evans, J., Gauci, V., Grayson, R., Haddaway, N., He, Y., Heppell, K., Holden, J., Hughes, S., Kaduk, J., Jones, D. L., Matthews, R., Menichino, N., Misselbrook, T., Page, S., Pan, G., Peacock, M., Rayment, M., Ridley, L., Robinson, I., Rylett, D., Scowen, M., Stanley, K. & Worrall, F., 2016, Centre for Ecology & Hydrology .Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn › adolygiad gan gymheiriaid
- Cyhoeddwyd
Intramolecular Wittig reactions with esters utilising triphenylphosphine and dimethyl acetylenedicarboxylate
Evans, L. A., Griffiths, K. E., Guthmann, H. & Murphy, P. J., 7 Ion 2002, Yn: Tetrahedron Letters. 43, 2, t. 299-301Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
The Cylindrospermopsin Alkaloids
Evans, D. M. & Murphy, P. J., 2011, Yn: Alkaloids: Chemistry and Biology. 70, t. 1-77 77 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Non-invasive genetic studies and virus epidemiology
Everest, D. J., Dastjerdi, A., Davies, H., Shuttleworth, C., Ogden, R., Butler, H. & Sapsford, B., 30 Maw 2022, Yn: Veterinary Record. 190, t. 204-205Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl
- Cyhoeddwyd
Adenovirus infection in red squirrels in areas free from grey squirrels
Everest, D. J., Butler, H., Simpson, V. R., Blackett, T. & Shuttleworth, C., 31 Awst 2013, Yn: The Veterinary record. 173, 8, t. 199-200Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl