Ysgol Gwyddorau Eigion
- Erthygl › Ymchwil › Adolygwyd gan gymheiriaid
- Cyhoeddwyd
Water-level controls on macro-tidal rip currents
Austin, M. J., Masselink, G., Scott, T. M. & Russell, P. E., 16 Rhag 2013, Yn: Continental Shelf Research. 75, t. 28-40Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wave exposure shapes reef community composition and recovery trajectories at a remote coral atoll
Lange, I. D., Benkwitt, C. E., McDevitt-Irwin, J. M., Tietjen, K. L., Taylor, B., Chinkin, M., Gunn, R. L., Palmisciano, M., Steyaert, M., Wilson, B., East, H. K., Turner, J., Graham, N. A. J. & Perry, C. T., Rhag 2021, Yn: Coral Reefs. 40, 6, t. 1819-1829 11 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wave power variability over the northwest European shelf seas
Neill, S. P. & Hashemi, R., 1 Meh 2013, Yn: Applied Energy. 106, t. 31-46Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wave produced patterns in rotating sonar images.
Thorpe, S. A. & Hall, A. J., 1 Maw 2002, Yn: Continental Shelf Research. 22, 4, t. 535-545Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wave resource characterization and co-location with offshore wind in the Irish Sea
Neill, S., 24 Chwef 2024, Yn: Renewable Energy. 222, 13 t., 119902.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wave ripple development on mixed clay–sand substrates: Effects of clay winnowing and armoring
Wu, X., Baas, J. H., Parsons, D. R., Eggenhuisen, J., Amoudry, L., Cartigny, M., McLelland, S., Mouazé, D. & Ruessink, G., Tach 2018, Yn: Journal of Geophysical Research: Earth Surface. 123, 11, t. 2784-2801 35 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wave-tide interaction modulates nearshore wave height
Lewis, M. J., Palmer, T., Hashemi, R., Robins, P., Saulter, A., Brown, J., Lewis, H. & Neill, S., Maw 2019, Yn: Ocean Dynamics. 69, 3, t. 367-384Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Weak tides during Cryogenian glaciations
Green, M., Davies, H., Duarte, J., Creveling, J. & Scotese, C., 4 Rhag 2020, Yn: Nature Communications. 11, 1, 6227.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Weakening of cold halocline layer exposes sea ice to oceanic heat in the eastern Arctic Ocean
Polyakov, I., Rippeth, T., Fer, I., Alkire, M., Baumann, T., Carmack, E., Ivanov, V., Janout, M. A., Padman, L., Pnyushkov, A. & Rember, R., 15 Medi 2020, Yn: Journal of Climate. 33, 18, t. 8107-8123Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
What can seabirds tell us about the tide?
Cooper, M., Bishop, C. M., Lewis, M., Bowers, D., Bolton, M., Owen, E. & Dodd, S., 29 Tach 2018, Yn: Ocean Science. 14, 6, t. 1483-1490 7 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
When One Health Meets the United Nations Ocean Decade: Global Agendas as a Pathway to Promote Collaborative Interdisciplinary Research on Human-Nature Relationships
Masterson Algar, P., Jenkins, S., Windle, G., Morris-Webb, E., Takahashi, C. K., Burke, T., Rosa, I., Martinez, A. S., Torres-Mattos, E. B., Taddei, R., Morrison, V., Kasten, P., Bryning, L., Cruz de Oliveira, N. R., Gonçalves, L. R., Skov, M., Beynon-Davies, C., Bumbeer, J., Saldiva, P. H. N., Leão, E. & Christofoletti, R., 6 Ebr 2022, Yn: Frontiers in Psychology. 13, 809009.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
When the tiny help the mighty: facilitation between two introduced species, a solitary ascidian and a macroalga in northern Patagonia, Argentina
Javier Pereyra, P., de la Barra, P., Gastaldi, M., Francisco Saad, J., Nahuel Firstater, F. & Andrea Narvarte, M., Medi 2017, Yn: Marine Biology. 164, 9, 185.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Why artificial light at night should be a focus for global change research in the 21st century
Davies, T. W. & Smyth, T., Maw 2018, Yn: Global Change Biology. 24, 3, t. 872-882Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Widespread deoxygenation of temperate lakes
Jane, S. F., Hansen, G. J. A., Kraemer, B. M., Leavitt, P. R., Mincer, J. L., North, R. L., Pilla, R. M., Stetler, J. T., Williamson, C. E., Woolway, R. I., Arvola, L., Chandra, S., DeGasperi, C. L., Diemer, L., Dunalska, J., Erina, O., Flaim, G., Grossart, H-P., Hambright, K. D., Hein, C., Hejzlar, J., Janus, L. L., Jenny, J-P., Knoll, L. B., Leoni, B., Mackay, E., Matsuzaki, S-I. S., McBride, C., Muller-Navarra, D. C., Paterson, A. M., Pierson, D., Rogora, M., Rusak, J. A., Sadro, S., Saulnier-Talbot, E., Schmid, M., Sommaruga, R., Thiery, W., Verburg, P., Weathers, K. C., Weyhenmeyer, G. A., Yokota, K. & Rose, K. C., 2 Meh 2021, Yn: Nature. 594, 7861, t. 66-70Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Widespread loss of lake ice around the Northern Hemisphere in a warming world
Sharma, S., Blagrave, K., Magnuson, J. J., O'Reilly, C. M., Oliver, S., Batt, R. D., Magee, M. R., Straile, D., Weyhenmeyer, G. A., Winslow, L. & Woolway, R. I., 1 Maw 2019, Yn: Nature Climate Change. 9, 3, t. 227-231Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wind-driven mixing at intermediate depths in an ice-free Arctic Ocean
Lincoln, B., Rippeth, T., Lenn, Y-D., Timmermans, M-L., Willaims, W. & Bacon, S., 28 Medi 2016, Yn: Geophysical Research Letters. 43, 18, t. 9749-9756Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wind-driven nutrient pulses to the subsurface chlorophyll maximum in seasonally stratified shelf seas
Williams, C., Sharples, J., Mahaffey, C. & Rippeth, T., 28 Hyd 2013, Yn: Geophysical Research Letters. 40, 20, t. 5467-5472 6 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Winter cascading of cold water in Lake Geneva.
Fer, I., Lemmin, U. & Thorpe, S. A., 1 Meh 2002, Yn: Journal of Geophysical Research - Oceans. 107, C6, t. 3060Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Winter inverse lake stratification under historic and future climate change
Woolway, R. I., Denfeld, B., Tan, Z., Jansen, J., Weyhenmeyer, G. A. & La Fuente, S., 1 Awst 2022, Yn: Limnology and Oceanography Letters. 7, 4, t. 302-311Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wonder Weeds.
Thomas, D. N., 1 Ebr 2001, Yn: BBC Wildlife Magazine. 19Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Worldwide alteration of lake mixing regimes in response to climate change
Woolway, R. I. & Merchant, C. J., 1 Ebr 2019, Yn: Nature Geoscience. 12, 4, t. 271-276Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Would you share your knowledge of grounds?
Kaiser, M. J., 1 Chwef 2000, Yn: Fishing News International. t. 26Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Your evidence or mine? Systematic evaluation of reviews of marine protected area effectiveness
Woodcock, P., O'Leary, B., Kaiser, M. & Pullin, A., Gorff 2017, Yn: Fish and Fisheries. 18, 4, t. 668-681Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Zooplankton fecal pellet flux in the abyssal northeast Pacific: A 15 year time-series study
Wilson, S. E., Ruhl, H. A. & Smith Jr, K. L., 3 Mai 2013, Yn: Limnology and Oceanography. 58, 3, t. 881-892Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
δ15N and δ13C diet-tissue discrimination factors for large sharks under semi-controlled conditions.
Hussey, N. E., Brush, J., McCarthy, I. D. & Fisk, A. T., 1 Ebr 2010, Yn: Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology. 155, 4, t. 445-453Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
“Good news everyone”, the natives have returned: Assemblages of European flat oysters make a reappearance in Belfast Lough after a century of absence.
Smyth, D., Hayden-Hughes, M., Alexander, J., Bayford, P. & Kregting, L., 31 Ion 2021, Yn: Regional Studies in Marine Science. 41, t. 101585 1 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
“The Ekman Drain”: a conduit to the deep ocean for shelf material
Simpson, J. H. & McCandliss, R. R., 1 Hyd 2013, Yn: Ocean Dynamics. 63, 9-10, t. 1063-1072Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Llythyr › Ymchwil › Adolygwyd gan gymheiriaid
- Cyhoeddwyd
Artificial skyglow disrupts celestial migration at night
Torres, D., Tidau, S., Jenkins, S. & Davies, T., 22 Meh 2020, Yn: Current Biology. 30, 12, t. PR696-R697Allbwn ymchwil: Cyfraniad at gyfnodolyn › Llythyr › adolygiad gan gymheiriaid
- Cyhoeddwyd
Eco-imperialism
Sheppard, C. & Turner, J., 21 Maw 2009, Yn: New Scientist. 201, 2700, t. 22-22Allbwn ymchwil: Cyfraniad at gyfnodolyn › Llythyr › adolygiad gan gymheiriaid
- Cyhoeddwyd
Ocean community warming responses explained by thermal affinities and temperature gradients
Burrows, M. T., Bates, A. E., Costello, M. J., Edwards, M., Edgar, G. J., Fox, C. J., Halpern, B. S., Hiddink, J. G., Pinsky, M. L., Batt, R. D., Molinos, J. G., Payne, B., Schoeman, D., Stuart-Smith, R. D. & Poloczanska, E. S., 25 Tach 2019, Yn: Nature Climate Change. 9, 12, t. 959-963Allbwn ymchwil: Cyfraniad at gyfnodolyn › Llythyr › adolygiad gan gymheiriaid
- Cyhoeddwyd
Selective foraging behavior of seabirds in small-scale slicks
Lieber, L., Füchtencordsjürgen, C., Hilder, R. L., Revering, P. J., Siekmann, I., Langrock, R. & Nimmo-Smith, W. A. M., Ebr 2023, Yn: Limnology and Oceanography Letters. 8, 2, t. 286-294 9 t., 10289.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Llythyr › adolygiad gan gymheiriaid
- Cyhoeddwyd
Turbulent Dissipation of Coastal Seas: Response to article: Observations of Biologically Generated Turbulence in a Coastal Inlet. Kunze, E., Dower, J.F., Beveridge, R., & Bartlett, K.P. (2007) Science 313, 5794, 1768-1770
Rippeth, T., Gascoigne, J., Green, M., Inall, M., Palmer, M., Wiles, P. & Simpson, J., 7 Meh 2007, Yn: Science. 313, 5794Allbwn ymchwil: Cyfraniad at gyfnodolyn › Llythyr › adolygiad gan gymheiriaid
- Sylw/Dadl › Ymchwil › Adolygwyd gan gymheiriaid
- Cyhoeddwyd
Comment on: “Is ‘re-mobilisation’ nature restoration or nature destruction? A commentary”, by Delgado-Fernandez et al.
Austin, M. & Walker-Springett, G., 13 Ion 2021, Yn: Journal of Coastal Conservation. 25, 1, 10.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Sylw/Dadl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Important Shark Areas: rationale and need
Moore, A. & Fowler, S., 1 Ebr 2022, Yn: Aquatic Conservation: Marine and Freshwater Ecosystems. 32, 4, t. 710-711 2 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Sylw/Dadl › adolygiad gan gymheiriaid
- Golygyddiad › Ymchwil › Adolygwyd gan gymheiriaid
- Cyhoeddwyd
Rethinking coral reef functional futures
Williams, G. J. & Graham, N. A. J., 7 Meh 2019, Yn: Functional Ecology. 33, 6, t. 942-947Allbwn ymchwil: Cyfraniad at gyfnodolyn › Golygyddiad › adolygiad gan gymheiriaid
- Cyhoeddwyd
Wastewater-Based Epidemiology: Global Collaborative to Maximize Contributions in the Fight Against COVID-19
Bivins, A., North, D., Ahmad, A., Ahmed, W., Alm, E., Been, F., Bhattacharya, P., Bijlsma, L., Boehm, A. B., Brown, J., Buttiglieri, G., Calabro, V., Carducci, A., Castiglioni, S., Gurol, Z. C., Chakraborty, S., Costa, F., Curcio, S., de los Reyes, F. L. . III., Vela, J. D., Farkas, K., Fernandez-Casi, X., Gerba, C., Gerrity, D., Girones, R., Gonzalez, R., Haramoto, E., Harris, A., Holden, P. A., Islam, M. T., Jones, D. L., Kasprzyk-Hordern, B., Kitajima, M., Kotlarz, N., Kumar, M., Kuroda, K., La Rosa, G., Malpei, F., Mautus, M., McLellan, S. L., Medema, G., Meschke, J. S., Mueller, J., Newton, R. J., Nilsson, D., Noble, R. T., van Nuijs, A., Peccia, J., Perkins, T. A., Pickering, A. J., Rose, J., Sanchez, G., Smith, A., Stadler, L., Stauber, C., Thomas, K., van der Voorn, T., Wigginton, K., Zhu, K. & Bibby, K., 7 Gorff 2020, Yn: Environmental Science and Technology. 54, 13, t. 7754-7757Allbwn ymchwil: Cyfraniad at gyfnodolyn › Golygyddiad › adolygiad gan gymheiriaid
- Rhifyn Arbennig › Ymchwil › Adolygwyd gan gymheiriaid
- Cyhoeddwyd
The Hominin sites and Palaeolakes Drilling Project: testing hypotheses of climate-driven human evolution and dispersal at Chew Bahir, Ethiopia
Lamb, H., Cohen, A., Schabitz, F., Asrat, A., Bates, R., Davies, S., Deino, A., Forster, V., Grove, M., Huws, D., Junginger, A., Konrad-Schmolke, M., Lane, C., Leng, M., Mark, D., Martin-Jones, E., Pearce, N., Pearson, E., Ramsey, C., Raub, T., Rethemeyer, J., Roberts, H., Rogass, C., Trauth, M., Viehberg, F., Wagner, B. & Woldegabriel, G., 6 Meh 2016, Yn: Quaternary International. 404, Part B, t. 209 1 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Rhifyn Arbennig › adolygiad gan gymheiriaid
- Cyhoeddwyd
Tidal energy extraction in three-dimensional ocean models
Goward Brown, A., Neill, S. & Lewis, M., Rhag 2017, Yn: Renewable Energy. 114, A, t. 244/257Allbwn ymchwil: Cyfraniad at gyfnodolyn › Rhifyn Arbennig › adolygiad gan gymheiriaid
- Pennod › Ymchwil › Heb ei adolygu gan gymheiriaid
- Cyhoeddwyd
A 3D visualisation environment modelling the evolution of north-west Europe since the Last Glacial Maximum.
Wainwright, A., Varsamidis, T., Scourse, J. D., Lim, I. S. (gol.) & Duce, D. (gol.), 1 Ion 2007, Theory and Practice of Computer Graphics.. 2007 gol. Eurographics UK Chapter Proceedings, t. 229-235Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
A one–phase sheet flow model of sediment transport
Malarkey, J., Davies, A. G., Van Rijn, L. C. (gol.), Davies, A. G. (gol.) & Van De Graaff, J. R. (gol.), 1 Ion 2001, SEDMOC: Sediment Transport Modelling in Marine Coastal Environments. 2001 gol. Aqua Publications, t. 1-8Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
A transport model of graded sands in the oscillatory sheet-flow regime
Malarkey, J. & Davies, A., 1 Ion 2006, Proceedings of Coastal Dynamics ’05 held 4-8 April: Barcelona. 2006 gol. American Society of Civil Engineers, t. 14Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Abundance and distribution of Octopus cyanea in the Rodrigues Lagoon.
Genave, J. T., Turner, J. R., Latchford, J., Burnett, J. C. (gol.), Kavanagh, J. S. (gol.), Spencer, T. (gol.) & Latchford, J., 1 Ion 2001, Shoals of Capricorn Programme Field Report 1998–2001: Marine science: training and education in the western Indian Ocean. 2001 gol. Royal Society and Royal Geographical Society (with the Institute of British Geographers), t. 65Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Acoustic Dopper Techniques
Simpson, J., Rippeth, T. P., Williams, E., Betteridge, K., Baumert, H. Z. (gol.) & Sundermann, J. (gol.), 1 Ion 2005, Marine Turbulence: Theories: Observations and Models. 2005 gol. Cambridge University Press, t. 127-138Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Acoustic Dopper Techniques.
Simpson, J. H., Rippeth, T., Williams, E., Betteridge, K., Baumert, H. Z. (gol.) & Sundermann, J. (gol.), 1 Ion 2005, Marine Turbulence: Theories: Observations and Models. 2005 gol. Cambridge University Press, t. 127-138Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Acoustic Ground Discrimination Systems
Rees, E. I., Nic Aonghusa, C., Wilson, J. G. (gol.), Mackie, A. S. (gol.), O'Connor, B. D. (gol.), Rees, E. I. (gol.) & Darbyshire, T. (gol.), 1 Ion 2001, Benthic Biodiversity in the Southern Irish Sea 2:The South–West Irish Sea Survey. 2001 gol. Studies in Marine Biodiversity and Systematics from the National Museum of Wales, t. 68-70Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
An ecosystem perspective on conserving targeted and non-targeted species
Kaiser, M. J., Jennings, S., Reynolds, J. D. (gol.), Mace, G. M. (gol.), Redford, K. H. (gol.) & Robinson, J. G. (gol.), 1 Ion 2001, Conservation of Exploited Species. 2001 gol. Cambridge University Press, t. 341-369Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
An example of conservation and exploitation achieved through a voluntary fishery management regime
Blyth, R. E., Kaiser, M. J., Hart, P. J., Edwards-Jones, G., Haggan, N. (gol.), Wood, L. (gol.) & Brignall, C. (gol.), 1 Ion 2003, Putting Fishers' knowledge to work. The Fisheries Research Centre Research Reports. 2003 gol. University of British Columbia, t. 409-425Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
An introduction to the Mascarene Plateau and its Region.
Spencer, T., Turner, J. R., Burnett, J. C. (gol.) & Kavanagh, J. S. (gol.), 1 Ion 2001, Shoals of Capricorn Programme Field Report 1998–2001: Marine science: training and education in the western Indian Ocean. 2001 gol. Royal Society and Royal Geographical Society (with the Institute of British Geographers), t. xxxii-xxxviAllbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Battery (Castle Down).
Scourse, J. D., Rhodes, E. J. & Scourse, J. D. (gol.), 1 Ion 2006, The Isles of Scilly: Field Guide. 2006 gol. Quaternary Research Association, London, t. 136-138Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Benthic Epifauna and Demersal Fish: samples from small-mesh beam trawls
Rees, E. I., Mackie, A. S., James, J. W. (gol.), Rees, E. I., Darbyshire, T. (gol.), Philpott, S. (gol.), Mortimer, K. (gol.), Jenkins, G. O. (gol.) & Morando, A. (gol.), 1 Ion 2006, The Outer Bristol Channel Marine Habitat Study. BIOMOR 4. 2006 gol. Unknown, t. 192-208Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod