1. Cyhoeddwyd

   Modelling uncertainty in greenhouse gas emissions from UK agriculture at the farm level.

   Gibbons, J. M., Ramsden, S. J. & Blake, A., 1 Maw 2006, Yn: Agriculture, Ecosystems and Environment. 112, 4, t. 347-355

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2. Cyhoeddwyd

   Modelling optimal strategies for decreasing nitrate loss with variation in weather - a farm-level approach.

   Gibbons, J. M., Sparkes, D. L., Wilson, P. & Ramsden, S. J., 1 Chwef 2005, Yn: Agricultural Systems. 83, 2, t. 113-134

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

3. Cyhoeddwyd

   Robustness of recommended farm plans in England under climate change: Monte Carlo simulation.

   Gibbons, J. M. & Ramsden, S. J., 1 Ion 2005, Yn: Climatic Change. 68, 1-2, t. 113-133

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

4. Cyhoeddwyd

   Applying Bayesian Model Averaging to mechanistic models: an example and comparison of methods.

   Gibbons, J. M., Cox, G. M., Wood, A. T., Craigon, J., Ramsden, S. J., Tarsitano, D. & Crout, N. M., 1 Awst 2008, Yn: Environmental Modelling and Software. 23, 8, t. 973-985

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

5. Cyhoeddwyd

   Drought avoidance and the effect of topography on trees in the understorey in Bornean lowland rain forest.

   Gibbons, J. M. & Newbery, D. M., 1 Ion 2003, Yn: Plant Ecology. 164, 1, t. 1-18

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

6. Cyhoeddwyd

   Should payments for biodiversity conservation be based on action or results?

   Gibbons, J. M., Nicholson, E., Milner-Gulland, E. J. & Jones, J. P. G., 1 Hyd 2011, Yn: Journal of Applied Ecology. 48, 5, t. 1218-1226

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

7. Cyhoeddwyd

   Could biodiversity loss have increased Australia’s bushfire threat

   Gibbons, J. M., Hayward, M. W., Ward-Fear, G., L'Hotellier, F. L., Hermen, K., Kabat, A. P. & Gibbons, J. P., Rhag 2016, Yn: Animal Conservation. 19, 6, t. 490-497

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

8. Cyhoeddwyd

   Nonlinear effects in magnetic fluids.

   Giannitsis, A. T., Fannin, P. C. & Charles, S. W., 1 Maw 2005, Yn: Journal of Magnetism and Magnetic Materials. 289, t. 165-167

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

9. Cyhoeddwyd

   A phylogenetic analysis of body size evolution in the Anolis roquet group (Sauria : Iguanidae): character displacement or size assortment?

   Giannasi, N., Thorpe, R. S. & Malhotra, A., 1 Chwef 2000, Yn: Molecular Ecology. 9, 2, t. 193-202

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

10. Cyhoeddwyd

    Nuclear and mtDNA phylogenies of the Trimeresurus complex: Implications for the gene versus species tree debate.

    Giannasi, N., Malhotra, A. & Thorpe, R. S., 1 Ebr 2001, Yn: Molecular Phylogenetics and Evolution. 19, 1, t. 57-66

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

11. Cyhoeddwyd

    The use of amplified fragment length polymorphism in determining species trees at fine taxonomic levels: analysis of a medically important snake, Trimeresurus albolabris

    Giannasi, N., Thorpe, R. S. & Malhotra, A., 1 Chwef 2001, Yn: Molecular Ecology. 10, 2, t. 419-426

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

12. Cyhoeddwyd

    Nano-Sized and Filterable Bacteria and Archaea: Biodiversity and Function

    Ghuneim, L-A., Jones, D. L., Golyshin, P. & Golyshina, O., 21 Awst 2018, Yn: Frontiers in Microbiology. 9, 1971.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

13. Cyhoeddwyd

    Utilization of low-molecular-weight organic compounds by the filterable fraction of a lotic microbiome

    Ghuneim, L. A., Distaso, M., Chernikova, T., Bargiela, R., Lunev, E. A., Korzhenkov, A. A., Toshchakov, S. V., Rojo, D., Barbas, C., Ferrer, M., Golyshina, O., Golyshin, P. & Jones, D. L., 1 Chwef 2021, Yn: Fems Microbiology Ecology. 97, 2

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

14. Cyhoeddwyd

    Genetic polymorphism in the visceralizing gene sequence of Leishmania Tropica isolated from the soldiers returning from Iraq.

    Ghosh, K., Mendez, J., Braig, H. R. & Weina, P. J., 1 Rhag 2008, t. 925.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

15. Cyhoeddwyd

    4,5-Diazafluorene co-oligomers as electrondeficientlight-emitting materials and selectivefluorescence sensors for mercury(II) cations

    Ghosh, S., Alghunaim, A. S., AL-Mashhadani, M., Krompiec, M. P., Hallett, M. & Perepichka, I., 14 Ebr 2018, Yn: Journal of Materials Chemistry C. 6, 14, t. 3762-3773

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

16. Cyhoeddwyd

    Variations in the Phytophthora infestans population in Nepal as revealed by nuclear and mitochondrial DNA polymorphisms.

    Ghimire, S. R., Hyde, K. D., Hodgkiss, I. J., Shaw, D. S. & Liew, E. C., 1 Chwef 2003, Yn: Phytopathology. 93, 2, t. 236-243

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

17. Cyhoeddwyd

    Attachment of acidophilic bacteria to solid surfaces: The significance of species and strain variations.

    Ghauri, M. A., Okibe, N. & Johnson, D. B., 1 Maw 2007, Yn: Hydrometallurgy. 85, 2-4, t. 72-80

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

18. Cyhoeddwyd

    Populations of heavy fuel oil-degrading marine microbial community in presence of oil sorbent materials.

    Gertler, C., Gerdts, G., Timmis, K. N., Yakimov, M. M. & Golyshin, P. N., 1 Awst 2009, Yn: Journal of Applied Microbiology. 107, 2, t. 590-605

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

19. Cyhoeddwyd

    A mesocosm study of the changes in marine flagellate and ciliate communities in a crude oil bioremediation trial

    Gertler, C., Näther, D. J., Gerdts, G., Malpass, M. C. & Golyshin, P. N., Gorff 2010, Yn: Microbial Ecology. 60, 1, t. 180-91 12 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

20. Cyhoeddwyd

    Conversion of Uric Acid into Ammonium in Oil-Degrading Marine Microbial Communities: a Possible Role of Halomonads

    Gertler, C., Bargiela, R., Mapelli, F., Han, X. F., Chen, J. W., Hai, T., Amer, R. A., Mahjoubi, M., Malkawi, H., Magagnini, M., Cherif, A., Abdel-Fattah, Y. R., Kalogerakis, N., Daffonchio, D., Ferrer, M. & Golyshin, P. N., 1 Hyd 2015, Yn: Microbial Ecology. 70, 3, t. 724-740

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

21. Cyhoeddwyd

    Second-to-fourth digit ratio (2D:4D) is unrelated to measures of somatic reproductive effort among young men from Cebu, the Philippines

    Georgiev, A. V., Ryan, C. P., Gettler, L. T., McDade, T. W. & Kuzawa, C. W., Gorff 2017, Yn: American Journal of Physical Anthropology. 163, 3, t. 437-445

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

22. Cyhoeddwyd

    Two cases of dead-infant carrying by female Zanzibar red colobus (Piliocolobus kirkii) at Jozani-Chwaka Bay National Park, Zanzibar

    Georgiev, A., Melvin, Z. E., Warkentin, A-S., Winder, I. C. & Kassim, A., 2019, Yn: African Primates . 13, t. 57-60

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Llythyr › adolygiad gan gymheiriaid

23. Cyhoeddwyd

    Is early postnatal growth velocity, a proxy of minipubertal androgen action, related to adult second-to-fourth digit (2D:4D) ratios in men? A test in Cebu, Philippines

    Georgiev, A. V., Ryan, C. P., Borja, J. B. & Kuzawa, C. W., Tach 2017, Yn: American Journal of Human Biology. 29, 6, e23047.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

24. 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

25. Cyhoeddwyd

    Organic phosphorus in the terrestrial environment: a perspective on the state of the art and future priorities

    George, T. S., Giles, C. D., Menezes-Blackburn, D., Condron, L. M., Gama-Rodrigues, A. C., Jaisi, D., Lang, F., Neal, A. L., Stutter, M. I., Almeida, D. S., Bol, R., Cabugao, K. G., Celi, L., Cotner, J. B., Feng, G., Goll, D. S., Hallama, M., Krueger, J., Plassard, C., Rosling, A., Darch, T., Fraser, T., Giesler, R., Richardson, A. E., Tamburini, F., Shand, C. A., Lumsdon, D. G., Zhang, H., Blackwell, M. S. A., Wearing, C., Mezeli, M. M., Almas, A. R., Audette, Y., Bertrand, I., Beyhaut, E., Boitt, G., Bradshaw, N., Brearley, C. A., Bruulsema, T. W., Ciais, P., Cozzolino, V., Duran, P. C., Mora, M. L., de Menezes, A. B., Dodd, R. J., Dunfield, K., Engl, C., Frazao, J. J., Garland, G., Jimenez, J. L. G., Graca, J., Granger, S. J., Harrison, A. F., Heuck, C., Hou, E. Q., Johnes, P. J., Kaiser, K., Kjaer, H. A., Klumpp, E., Lamb, A. L., Macintosh, K. A., Mackay, E. B., McGrath, J., McIntyre, C., McLaren, T., Meszaros, E., Missong, A., Mooshammer, M., Negron, C. P., Nelson, L. A., Pfahler, V., Poblete-Grant, P., Randall, M., Seguel, A., Seth, K., Smith, A. C., Smits, M. M., Sobarzo, J. A., Spohn, M., Tawaraya, K., Tibbett, M., Voroney, P., Wallander, H., Wang, L., Wasaki, J. & Haygarth, P. M., Meh 2018, Yn: Plant and Soil. 427, 1-2, t. 191-208

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

26. Cyhoeddwyd

    Shifts in Soil Structure, Biological, and Functional Diversity Under Long-Term Carbon Deprivation

    George, P. B. L., Fidler, D. B., Van Nostrand, J. D., Atkinson, J. A., Mooney, S. J., Creer, S., Griffiths, R. I., McDonald, J. E., Robinson, D. A. & Jones, D. L., 14 Medi 2021, Yn: Frontiers in Microbiology. 12, 735022.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

27. Cyhoeddwyd

    Divergent national-scale trends of microbial and animal biodiversity revealed across diverse temperate soil ecosystems

    George, P., Lallias, D., Creer, S., Seaton, F., Kenny, J. G., Eccles, R. M., Griffiths, R., Lebron, I., Emmett, B., Robinson, D. & Jones, D. L., 7 Maw 2019, Yn: Nature Communications. 10, 1, t. 1107 1107.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

28. Cyhoeddwyd

    Needles in haystacks: monitoring the potential escape of bioaerosolised antibacterial resistance genes from wastewater treatment plants with air and phyllosphere sampling

    George, P., Hillary, L., Leclerc, S., Cooledge, E., Lemieux, J., Duchaine, C. & Jones, D. L., 12 Ebr 2024, Yn: Canadian Journal of Microbiology.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

29. Cyhoeddwyd

    Primer and database choice affect fungal functional but not biological diversity findings in a national soil survey

    George, P., Creer, S., Griffiths, R. I., Emmett, B. A., Robinson, D. A. & Jones, D. L., 1 Tach 2019, Yn: Frontiers in Environmental Science. 7, 173.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

30. Cyhoeddwyd

    Evaluation of mesofauna communities as soil quality indicators in a national-level monitoring programme

    George, P., Keith, A. M., Creer, S., Barrett, G. L., Lebron, I., Emmett, B. A., Robinson, D. & Jones, D., 1 Rhag 2017, Yn: Soil Biology and Biochemistry. 115, t. 537-546

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

31. Cyhoeddwyd

    Physiological and molecular diversity of feather moss associative N-2-fixing cyanobacteria.

    Gentili, F., Nilsson, M. C., Zackrisson, O., DeLuca, T. H. & Sellstedt, A., 1 Rhag 2005, Yn: Journal of Experimental Botany. 56, 422, t. 3121-3127

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

32. Cyhoeddwyd

    Population structure on breeding grounds of Lake Malawi's 'twilight zone' cichlid fishes.

    Genner, M. J., Nichols, P., Shaw, P. W., Carvalho, G. R., Robinson, R. L. & Turner, G. F., 1 Chwef 2010, Yn: Journal of Biogeography. 37, 2, t. 258-269

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

33. Cyhoeddwyd

    Isotopic change throughout the life history of a Lake Malawi cichlid fish.

    Genner, M. J., Hawkins, S. J. & Turner, G. F., 1 Ebr 2003, Yn: Journal of Fish Biology. 62, 4, t. 907-917

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

34. Cyhoeddwyd

    Timing of population expansions within the Lake Malawi haplochromine cichlid fish radiation

    Genner, M. J. & Turner, G. F., 1 Ebr 2015, Yn: Hydrobiologia. 748, 1, t. 121-132

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

35. Cyhoeddwyd

    Revision of the African cichlid fish genus Ctenochromis (Teleostei, Cichliformes), including a description of the new genus Shuja from Lake Tanganyika and the new species Ctenochromis scatebra from northern Tanzania

    Genner, M. J., Hsu, L-L., Collins, R. A., Smith, A. M., Saxon, A. D., Shechonge, A. H., Ngatunga, B. P. & Turner, G. F., 11 Mai 2022, Yn: European Journal of Taxonomy. 819, 1, t. 23-54 32 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

36. Cyhoeddwyd

    Reproductive isolation among deep-water cichlid fishes of Lake Malawi differing in monochromatic male breeding dress

    Genner, M. J., Nichols, P., Carvalho, G. R., Robinson, R. L., Shaw, P. W. & Turner, G. F., 1 Chwef 2007, Yn: Molecular Ecology. 16, 3, t. 651-662

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

37. Cyhoeddwyd

    Beta diversity of rock-restricted cichlid fishes in Lake Malawi: importance of environmental and spatial factors.

    Genner, M. J., Taylor, M. I., Cleary, D. F., Hawkins, S. J., Knight, M. E. & Turner, G. F., 1 Hyd 2004, Yn: Ecography. 27, 5, t. 601-610

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

38. Cyhoeddwyd

    Establishment and expansion of Lake Malawi rock fish populations after a dramatic Late Pleistocene lake level rise.

    Genner, M. J., Knight, M. E., Haeslers, M. P. & Turner, G. F., 1 Ion 2010, Yn: Molecular Ecology. 19, 1, t. 170-182

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

39. Cyhoeddwyd

    Presence of Acapoeta tanganicae (Actinopterygii: Cypriniformes: Cyprinidae ) within the Lake Rukwa catchment supports historic riverine connectivity with Lake Tanganyika

    Genner, M. J., Turner, G. F., Smith, A., Mzighani, S. & Ngatunga, B. P., 31 Maw 2015, Yn: Acta Ichthyologica Et Piscatoria. 45, 1, t. 109-112

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

40. Cyhoeddwyd

    Ancient Hybridization and Phenotypic Novelty within Lake Malawi’s Cichlid Fish Radiation

    Genner, M. J. & Turner, G. F., 1 Ion 2012, Yn: Molecular Biology and Evolution. 29, 1, t. 195-206

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

41. Cyhoeddwyd

    Genetic homogeneity among breeding grounds and nursery areas of an exploited Lake Malawi cichlid fish.

    Genner, M. J., Nichols, P., Shaw, P. W., Carvalho, G. R., Robinson, R. L. & Turner, G. F., 1 Medi 2008, Yn: Freshwater Biology. 53, 9, t. 1823-1831

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

42. Cyhoeddwyd

    Translocations of rocky habitat cichlid fishes to Nkhata Bay, Lake Malawi.

    Genner, M. J., Botha, A. & Turner, G. F., 1 Awst 2006, Yn: Journal of Fish Biology. 69, 2, t. 622-628

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

43. Cyhoeddwyd

    How does the taxonomic status of allopatric populations influence species richness within African cichlid fish assemblages?

    Genner, M. J., Seehausen, O., Cleary, D. F., Knight, M. E., Michel, E. & Turner, G. F., 1 Ion 2004, Yn: Journal of Biogeography. 31, 1, t. 93-102

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

44. Cyhoeddwyd

    The mbuna cichlids of Lake Malawi: a model for rapid speciation and adaptive radiation.

    Genner, M. J. & Turner, G. F., 1 Maw 2005, Yn: Fish and Fisheries. 6, 1, t. 1-34

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

45. Cyhoeddwyd

    Geographical ancestry of Lake Malawi's cichlid fish diversity

    Genner, M. J., Ngatunga, B. P., Mzighani, S., Smith, A. & Turner, G. F., 10 Meh 2015, Yn: Biology Letters. 11, 6, t. Article Number: 20150232

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

46. Cyhoeddwyd

    Age of cichlids: New dates for ancient lake fish radiations

    Genner, M. J., Seehausen, O., Lunt, D. H., Joyce, D. A., Shaw, P. W., Carvalho, G. R. & Turner, G. F., 1 Mai 2007, Yn: Molecular Biology and Evolution. 24, 5, t. 1269-1282

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

47. Cyhoeddwyd

    Evolution of a cichlid fish in a Lake Malawi satellite lake.

    Genner, M. J., Nichols, P., Carvalho, G. R., Robinson, R. L., Shaw, P. W., Smith, A. & Turner, G. F., 22 Medi 2007, Yn: Proceedings of The Royal Society B - Biological Sciences. 274, 1623, t. 2249-2257

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

48. Cyhoeddwyd

    Insights from two decades of the Student Conference on Conservation Science

    Geldmann, J., Ales-Pinto, H., Amano, T., Bartlett, H., Christie, A. P., Collas, L., Cooke, S. C., Correa, R., Cripps, I., Doherty, A., Finch, T., Garnett, E. E., Hua, F., Jones, J. P. G., Kasoar, T., MacFarlane, D., Martin, P. A., Mukherjee, N., Mumby, H. S., Payne, C., Petrovan, S. O., Rocha, R., Russell, K., Simmons, B. I., Wauchope, H. S., Worthington, T. A., Trevelyan, R., Green, R. & Balmford, A., Maw 2020, Yn: Biological Conservation. 243, 108478.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

49. Cyhoeddwyd

    Heterogeneity in fishers' harvesting decisions under a marine territorial user rights policy.

    Gelcich, S., Edwards-Jones, G. & Kaiser, M. J., 1 Maw 2007, Yn: Ecological Economics. 61, 2-3, t. 246-254

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

50. Cyhoeddwyd

    Using discourses for policy evaluation: the case of marine common property rights in Chile.

    Gelcich, S., Edwards-Jones, G., Kaiser, M. J. & Watson, E., 1 Ebr 2005, Yn: Society and Natural Resources. 18, 4, t. 377-391

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid