Porth Ymchwil

Dr Amin Soltangheisi

Swyddog Ymchwil Ôl-ddoethurol

Aelodaeth

Dolenni cyswllt

ORCID: 0000-0002-6766-5379
1 - 45 o blith 45Maint y tudalen: 50
Trefnu yn ôl: Blwyddyn gyhoeddi
  1. 2024

  2. Stable isotopic composition of Bothrops atrox (common lancehead) in four distinct land covers in eastern Amazonia

    Martinez, M. G., de Camargo, P. B., Moura da Silva, A. M., de Oliveira Junior, R. C., de Menzies Chalkidis, H., Dos Santos Junior, A. P., Mourao, R. H. V., Awazonas, D. R., Soltangheisi, A., da Silva Araujo, M. G., Filho, A. L. A. & Martinelli, L. A., 22 Ebr 2024, Yn: Biotropica. e13325.

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

  3. 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

  4. 2023
  5. Cyhoeddwyd

    Soil characteristics and fertility of the unique jarrah forest of southwestern Australia, with particular consideration of plant nutrition and land rehabilitation

    Soltangheisi, A., George, S. & Tibbett, M., 16 Meh 2023, Yn: Land. 12, 6, 1236.

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

  6. Cyhoeddwyd

    Fine root dynamics in a tropical integrated crop-livestock-forestry system

    Bieluczyk, W., Piccolo, M. D. C., Pereira, M. G., Lambais, G. R., Germon, A., de Moraes, M. T., Soltangheisi, A., Camargo, P. B. D., Bosi, C., Bernardi, A. C. D. C., Pezzopane, J. R. M., Batista, I. & Cherubin, M. R., 1 Meh 2023, Yn: Rhizosphere. 26, 100695.

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

  7. Purslane (Portulaca oleracea L.) salt tolerance assessment

    Yazdani-Biouki, R., Karimi, M. & Soltangheisi, A., 16 Mai 2023, (E-gyhoeddi cyn argraffu) Yn: Soil Science and Plant Nutrition.

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

  8. Cyhoeddwyd

    Long-term land use and tillage influence on phosphorus species in Brazilian Oxisols: A multi-technique assessment by chemical P fractionation, 31P NMR and P K edge XANES spectroscopies

    Rodrigues, M., Soltangheisi, A., Belchior Abdala, D., Ebuele, V., Fitzsimmons-Thoss, V., Withers, P. & Pavinato, P., 1 Mai 2023, Yn: Soil & Tillage Research. 229, 105683.

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

  9. 2022

  10. A critical review of Pongamia pinnata multiple applications: From land remediation and carbon sequestration to socioeconomic benefits

    Degani, E., Prasad, M. V. R., Paradkar, A., Pena, R., Soltangheisi, A., Ullah, I., Ullah, I., Warr, B. & Tibbett, M., 15 Rhag 2022, Yn: Journal of Environmental Management. 324, 116297.

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

  11. Soil quality literature in Brazil: A systematic review

    Simon, C. D. P., Gomes, T. F., Pessoa, T. N., Soltangheisi, A., Bieluczyk, W., Camargo, P. B., Martinelli, L. A. & Cherubin, M. R., 22 Ebr 2022, Yn: Revista Brasileira de Ciência do Solo. 46

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

  12. SIA-BRA: A database of animal stable carbon and nitrogen isotope ratios of Brazil

    Diniz-Reis, T. R., Augusto, F. G., Abdalla Filho, A. L., Araújo, M. G. D. S., Chaves, S. S. F., Almeida, R. F., Perez, E. B., Simon, C. D. P., de Souza, JL., da Costa, C. F. G., Gomes, TF., Martinez, M. G., Soltangheisi, A., Mariano, E., Vanin, A. S., Andrade, TR., Boesing, AL., Costa, F. J. V., Fortuna, M. DA., Guedes, V. M., Kisaka, T. B., Kruszynski, C., Lara, NR. F., Lima, R. A. M., Pompermaier, VT., Rangel, B. D. S., Ribeiro, J. F., Santi Junior, A. D., Tassoni Filho, M., Ferreira, A., Marques, T. S., Pereira, A. L., Aguiar, L. M. D. S., Anjos, M. B. D., Medeiros, E. S. F., Benedito, E., Calheiros, D. F., Christofoletti, R. A., Cremer, MJ., Duarte-Neto, P. J., Nardoto, G. B., Oliveira, A. C. B. D., Rezende, C. E. D., da Silva, MNF., Zuanon, J. A. S., Verdade, LM., Moreira, M. Z., Camargo, P. B. D. & Martinelli, L. A., 1 Ebr 2022, Yn: Global Ecology and Biogeography. 31, 4, t. 611-620 10 t.

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

  13. Effect of vertebrate exclusion on leaf litter decomposition in the coastal Atlantic forest of southeast Brazil

    Medeiros, G. G., Antonio, J., Harrison, M., Della Coletta, L., Soltangheisi, A., Banks‑Leite, C., Duarte‑Neto, P. J. & Martinelli, L. A., 1 Maw 2022, Yn: Tropical Ecology. 63, t. 151-154

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

  14. 2021

  15. Combined Effect of Salinity and Zinc Nutrition on Some Physiological and Biochemical Properties of Rosemary

    Soltangheisi, A., Hejazi-Mehrizi, M. & Saadatfar, A., 5 Medi 2021, Yn: Communications in Soil Science and Plant Analysis. 52, 22

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

  16. Eucalyptus tree influence on spatial and temporal dynamics of fine-root growth in an integrated crop-livestock-forestry system in southeastern Brazil

    Bieluczyk, W., Piccolo, M. D. C., Pereira, M. G., Lambais, G. R., de Moraes, M. T., Soltangheisi, A., Bernardi, A. C. D. C., Pezzopane, J. R. M., Bosi, C. & Cherubin, M. R., 1 Medi 2021, Yn: Rhizosphere. 19, 100415.

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

  17. LT-Brazil: A database of leaf traits across biomes and vegetation types in Brazil

    Mariano, E., Gomes, T. F., Lins, S. R. M., Abdalla-Filho, A. L., Soltangheisi, A., Araújo, M. G. S., Almeida, R. F., Augusto, F. G., Canisares, L. P., Chaves, S. S. F., Costa, C. F. G., Diniz-Reis, T. R., Galera, L. A., Martinez, M. G., Morais, M. C., Perez, E. B., Reis, L. C., da P. Simon, C., Mardegan, S. F., Domingues, T. F., Miatto, R. C., Oliveira, R. S., Reis, C. R. G., Nardoto, G. B., Kattge, J. & Martinelli, L. A., 30 Awst 2021, Yn: Global Ecology and Biogeography. 30, 11, t. 2136-2146 11 t.

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

  18. Partitioning of Environmental and Taxonomic Controls on Brazilian Foliar Content of Carbon and Nitrogen and Stable Isotopes

    Martinelli, L. A., Abdalla-Filho, A. L., Gomes, T. F., Lins, S. R. M., Mariano, E., Soltangheisi, A., Camargo, P. B., Vieira, S. A., Higuchi, N. & Nardoto, G. B., 12 Gorff 2021, Yn: Frontiers in Forests and Global Change. 4

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

  19. Long term sugarcane straw removal affects soil phosphorus dynamics

    Soltangheisi, A., Haygarth, P. M., Pavinato, P., Cherubin, M. R., Teles, A. P. B., Bordonal, R. D. O., Carvalho, J. L. N., Withers, P. J. A. & Martinelli, L. A., 1 Ebr 2021, Yn: Soil & Tillage Research. 208, 104898, 104898.

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

  20. Precrops alleviate soil physical limitations for soybean root growth in an Oxisol from southern Brazil

    Soltangheisi, A., Bertollo, A. M., de Moraes, M. T., Franchini, J. C., Balbinot Junior, A. A., Levien, R. & Debiasi, H., 1 Chwef 2021, Yn: Soil & Tillage Research. 206, 104820

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

  21. Tillage systems and cover crops affecting soil phosphorus bioavailability in Brazilian Cerrado Oxisols

    Soltangheisi, A., Withers, P. J. A., Vargas, V., Holzschuh, M. & Pavinato, P., Ion 2021, Yn: Soil & Tillage Research. 205, 104770.

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

  22. 2020

  23. Trade-Offs between Sugarcane Straw Removal and Soil Organic Matter in Brazil

    Soltangheisi, A., Morais, M., Siqueira-Neto, M., Guerra, H., Satiro, L., Cerri, C. E. P., Feigl, B. J. & Cherubin, M. R., 11 Tach 2020, Yn: Sustainability. 12, 22, 9363.

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

  24. Determining ecosystem functioning in Brazilian biomes through foliar carbon and nitrogen concentrations and stable isotope ratios

    Martinelli, L. A., Nardoto, G. B., Soltangheisi, A., Reis, C. R., Abdalla-Filho, A. L., Camargo, P. B., Domingues, T. F., Faria, D., Figuera, A. M., Gomes, T. F., Lins, S. R. M., Mardegan, S. F., Mariano, E., Miatto, R. C., Moraes, R., Moreira, M. Z., Oliveira, R. S., Ometto, J. P. H. B., Santos, F. L. S., Sena-Souza, J., Silva, D. M. L., Silva, J. C. S. S. & Vieira, S. A., 3 Tach 2020, Yn: Biogeochemistry. 154, t. 405-423

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

  25. Cyhoeddwyd

    Revealing soil legacy phosphorus to promote sustainable agriculture in Brazil

    Pavinato, P. S., Cherubin, M. R., Soltangheisi, A., Rocha, G. C., Chadwick, D. R. & Jones, D. L., 28 Medi 2020, Yn: Scientific Reports. 10, 15615, 15615.

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

  26. Integrated farming systems influence soil organic matter dynamics in southeastern Brazil

    Soltangheisi, A., Bieluczyk, W., Piccolo, M. D. C., Pereira, M. G., de Moraes, M. T., Bernardi, A. C. D. C., Pezzopane, J. R. M., Oliveira, P. P. A., Moreira, M. Z., de Camargo, P. B., dos Santos Dias, C. T., Batista, I. & Cherubin, M. R., 1 Gorff 2020, Yn: Geoderma. 371, 114368, 114368.

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

  27. Carbon and Nitrogen Isotope Ratios of Food and Beverage in Brazil

    Martinelli, L. A., Nardoto, G. B., Perez, M. A. Z., Junior, G. A., Fracassi, F. C., Oliveira, J. G. G., Ottani, I. S., Lima, S. H., Mazzi, E. A., Gomes, T. F., Soltangheisi, A., Filho, A. L. A., Mariano, E., Costa, F. J. V., Duarte-Neto, P. J., Moreira, M. Z. & Camargo, P. B., 24 Maw 2020, Yn: Molecules. 25, 6, 1457.

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

  28. Cover Cropping May Alter Legacy Phosphorus Dynamics Under Long-Term Fertilizer Addition

    Soltangheisi, A., Teles, A. P. B., Sartor, L. R. & Pavinato, P., 11 Chwef 2020, Yn: Frontiers in Environmental Science. 8

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

  29. 2019

  30. Forest conversion to pasture affects soil phosphorus dynamics and nutritional status in Brazilian Amazon

    Soltangheisi, A., de Moraes, M. T., Cherubin, M. R., Obregón Alvarez, D., de Souza, L. F., Bieluczyk, W., Navroski, D., Teles, A. P. B., Pavinato, P. S., Martinelli, L. A., Tsai, S. M. & Camargo, P. B. D., 1 Tach 2019, Yn: Soil & Tillage Research. 194, 104330.

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

  31. Improving phosphorus sustainability of sugarcane production in Brazil

    Soltangheisi, A., Withers, P. J. A., Pavinato, P. S., Cherubin, M. R., Rossetto, R., Carmo, J. B. D., Rocha, G. C. D. & Martinelli, L. A., 3 Hyd 2019, Yn: Global Change Biology Bioenergy. 11, 12, t. 1444-1455

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

  32. Sugarcane Straw Removal: Implications to Soil Fertility and Fertilizer Demand in Brazil

    Soltangheisi, A., Cherubin, M. R., Lisboa, I. P., Silva, A. G. B., Varanda, L. L., Bordonal, R. D. O., Carvalho, J. L. N., Otto, R., Pavinato, P. & Cerri, C. E. P., 1 Awst 2019, Yn: BioEnergy Research. 12, t. 888-900

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

  33. The impact of sugarcane filter cake on the availability of P in the rhizosphere and associated microbial community structure

    Soltangheisi, A., Arruda, B., Rodrigues, M., Gumiere, T., Richardson, A. E., Andreote, F. D., Gatiboni, L. C. & Pavinato, P., 1 Meh 2019, Yn: Soil Use and Management. 35, 2, t. 334-345

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

  34. Minimum inhibitory concentration of nano-silver bactericides for beneficial microbes and its effect on Ralstonia solanacearum and seed germination of Japanese Cucumber (Cucumis sativus)

    Soltangheisi, A., Sotoodehnia, P., Mazlan, N., Saud, H. M., Samsuri, W. A. & Habib, S. H., 20 Maw 2019, Yn: PeerJ. 7, e6418

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

  35. Phosphate Sources and Filter Cake Amendment Affecting Sugarcane Yield and Soil Phosphorus Fractions

    Soltangheisi, A., dos Santos, V. R., Franco, H., Kolln, O., Vitti, A. C., dos Santos Dias, C. T., Herrera, W. F. B., Rodrigues, M., Soares, T. D. M., Withers, P. J. A. & Pavinato, P. S., 1 Maw 2019, Yn: Revista Brasileira de Ciência do Solo. 43, e0180227

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

  36. Fiber fractions, multielemental and isotopic composition of a tropical C4 grass grown under elevated atmospheric carbon dioxide

    Soltangheisi, A., Abdalla-Filho, A. L., Costa Junior, G. T., Lima, P. M. T., Abdalla, A. L., Ghini, R. & Piccolo, M. D. C., 19 Chwef 2019, Yn: PeerJ. 7, e5932

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

  37. 2018

  38. Phosphate Sources and Their Placement Affecting Soil Phosphorus Pools in Sugarcane

    Soltangheisi, A., dos Santos, V. R., Franco, H., Kolln, O., Vitti, A. C., dos Santos Dias, C. T. & Pavinato, P., 27 Tach 2018, Yn: Agronomy. 8, 12

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

  39. Sulfur uptake and translocation in maize (zea mays) grown in a high pH soil treated with elemental sulfur

    Karimizaarchi, M., Soltangheisi, A., Husin, A., Yusop, M. K. & Othman, R., Gorff 2018, Yn: Journal of Plant Nutrition. 41, 14, t. 1798-1806

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

  40. Changes in soil phosphorus lability promoted by phosphate sources and cover crops

    Soltangheisi, A., Rodrigues, M., Coelho, M. J. A., Gasperini, A. M., Sartor, L. R. & Pavinato, P. S., 1 Meh 2018, Yn: Soil & Tillage Research. 179, t. 20-28

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

  41. Transitions to sustainable management of phosphorus in Brazilian agriculture

    Soltangheisi, A., Withers, P. J. A., Rodrigues, M., de Carvalho, T. S., Guilherme, L. R. G., Benites, V. D. M., Gatiboni, L. C., de Sousa, D. M. G., Nunes, R. D. S., rosolem, C., Andreote, F. D., de Oliveira Jr, A., Coutinho, E. L. M. & Pavinato, P., 7 Chwef 2018, Yn: Scientific Reports. 8, 2537.

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

  42. 2017

  43. Soil Fertility and Management of Malaysian Soils

    Soltangheisi, A., Abdul Rahman, Z., Masood Khan, A., Batool, S. & Ashraf, M. A., 22 Medi 2017, Soils of Malaysia. Ashraf, M. A., Othman, R. & Ishak, C. F. (gol.). Boca Raton, FL: CRC Press, 30 t.

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  44. Effects of Cover Crops and Phosphorus Sources on Maize Yield, Phosphorus Uptake, and Phosphorus Use Efficiency

    Pavinato, P., Rodrigues, M., Soltangheisi, A., Sartor, L. R. & Withers, P. J. A., Meh 2017, Yn: Agronomy Journal. 109, 03, t. 1039-1047

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

  45. Do cover crops change the lability of phosphorus in a clayey subtropical soil under different phosphate fertilizers?

    Soltangheisi, A., Teles, A. P. B., Rodrigues, M., Herrera, W. F. B., Sartor, L. R., Withers, P. J. A. & Pavinato, P., 1 Maw 2017, Yn: Soil Use and Management. 33, 1

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

  46. 2016

  47. Biological and morphological traits of sugarcane roots in relation to phosphorus uptake

    Soltangheisi, A., Arruda, B., Rodrigues, M., Richardson, A. E., Andreote, F. D. & Pavinato, P., 1 Hyd 2016, Yn: Journal of Soil Science and Plant Nutrition. 16, 4, t. 901-915

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

  48. Sulfur and molybdenum fractionation in marine and riverine alluvium paddy soils

    Zakikhani, H., Yusop, M. K., Hanafi, M. M., Othman, R. & Soltangheisi, A., 2016, Yn: Chemical Speciation & Bioavailability. 28, 1-4, t. 170-181

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

  49. 2014

  50. Interaction Effects of Phosphorus and Zinc on their Uptake and 32P Absorption and Translocation in Sweet Corn (Zea mays var. Saccharata) Grown in a Tropical Soil

    Soltangheisi, A., Abdul Rahman, Z., Ishak, C. F., Hanafi, M. M. & Zakikhani, H., 8 Rhag 2014, Yn: Asian Journal of Plant Sciences. 13, 3, t. 129-135

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

  51. Effect of Zinc and Phosphorus Supply on the Activity of Carbonic Anhydrase and the Ultrastructure of Chloroplast in Sweet Corn (Zea mays var. saccharata)

    Soltangheisi, A., Abdul Rahman, Z., Ishak, C. F., Hanafi, M. M. & Zakikhani, H., 22 Medi 2014, Yn: Asian Journal of Plant Sciences. 13, 2, t. 51-58

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

  52. Interaction Effects of Zinc and Manganese on Growth, Uptake Response and Chlorophyll Content of Sweet Corn (Zea mays var. saccharata)

    Soltangheisi, A., Abdul Rahman, Z., Ishak, C. F., Hanafi, M. M. & Zakikhani, H., 3 Gorff 2014, Yn: Asian Journal of Plant Sciences. 13, 1, t. 26-33

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

  53. Effects of Different Levels of Molybdenum on Uptake of Nutrients in Rice Cultivars

    Soltangheisi, A., Zakikhani, H., Yusop, M. K., Anuar, A. R. & Othman, R., 14 Ebr 2014, Yn: Asian Journal of Crop Science. 6, 3, t. 236-244

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

  54. Evaluation of Phosphate Rock Sources and Rate of Application on Oil Palm Yield Grown on Peat Soils of Sarawak, Malaysia

    Soltangheisi, A., Abdul Rahman, Z., Gikonyo, E. W., Silek, B. & Goh, K. J., 18 Maw 2014, Yn: Journal of Agronomy. 13, 1, t. 12-22

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

  55. 2013

  56. Phosphorus and Zinc Uptake and Their Interaction Effect on Dry Matter and Chlorophyll Content of Sweet Corn (Zea mays var. Saccharata)

    Soltangheisi, A., Ishak, C. F., Hanafi, M. M., Zakikhani, H. & Abdul Rahman, Z., 1 Hyd 2013, Yn: Journal of Agronomy. 12, 4, t. 187-192

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