Fy ngwlad:
Golwg awyr o afon a tir

Biogeocemeg priddoedd, gwlyptiroedd ac amgylcheddau morol

Rydym yn gwneud ymchwil i'r hyn sy'n dylanwadu ar y broses cylchredu maetholion a llygryddion mewn priddoedd, gwlyptiroedd, dyfroedd croyw a chynefinoedd morol ledled y byd.

Ar y dudalen hon:
Earth

Ein Hymchwil

Ein prif ffocws yw deall tynged, llif a thrawsffurfiad maetholion a llygryddion mewn gwahanol ecosystemau a rheoliad y prosesau hyn gan ficro-organebau, planhigion ac anifeiliaid. 

Rydym yn gweithio ym mhrif fïomau’r byd, o'r Arctig i goedwigoedd glaw trofannol. Rydym hefyd yn astudio'r amgylcheddau mwyaf eithafol ar y Ddaear i ddeall sut mae bioleg yn gwthio ffiniau bywyd. Mae ein hymchwil gymhwysol yn mynd i’r afael â’r bygythiadau mwyaf sy’n wynebu ein hamgylchedd a’n hecosystemau ledled y byd.

Lle rydym yn gweithio

Mae ein lleoliad unigryw ar garreg drws Parc Cenedlaethol Eryri yn rhoi cyfle gwych i ddeall llif maetholion a llygryddion o ddalgylchoedd afonydd hyd yr arfordir. Rydym hefyd yn cydweithio ag amrywiaeth eang o wyddonwyr eraill ledled y byd. Mae ein hymchwil yn dilyn pob trywydd posibl.

Y maetholion a'r llygryddion rydym yn astudio 

Yng nghyd-destun newid hinsawdd, defnydd cynaliadwy o dir a llygredd dŵr, mae llawer o’n gwaith yn canolbwyntio ar gylchredau carbon, ffosfforws a nitrogen. Rydym hefyd yn astudio llif metelau trwm ac elfennau prinfwynau mewn ecosystemau pridd, afonydd a llynnoedd, yn enwedig mewn perthynas â gweithgareddau mwyngloddio a gwerthuso llwyddiant mesurau adfer. Ategir y gwaith hwn gan ymchwil ar ddiraddiad, tynged ac effaith llygryddion organig sy'n dod i'r amlwg yn yr amgylchedd, gan gynnwys plastigion, cemegau sy’n ymyrwyr endocrin a chynhyrchion fferyllol.

 Defaid yn crwydro Parc Cenedlaethol Eryri
A sea campion on the coast.
Y gludlys arfor yn ei safle naturiol ar yr arfordir.

Cyfleusterau labordy a chyfleusterau maes rhagorol

Mae hyn yn cynnwys gorsaf faes arbrofol Henfaes sydd wedi’i lleoli ger y Brifysgol, ac sy’n caniatáu astudiaethau integredig o arfordir Môr Iwerddon i fynyddoedd Eryri. Gerllaw, mae gennym hefyd ddalgylch 'Labordy Byw' afon Conwy, sef parth arfordirol ac aberol sy'n ganolbwynt i'n hastudiaethau ar newid defnydd tir ac effaith llygredd amaethyddol a threfol. Mae gennym hefyd wlyptiroedd, coedwigoedd a gweithfeydd trin dŵr gwastraff i gynnal arbrofion ynddynt. Dramor mae gennym safleoedd maes tymor hir mewn ecosystemau pegynol, coedwigoedd trofannol/boreal/tymherus, anialwch, glaswelltiroedd ac amrywiaeth eang o ecosystemau amaethyddol.

Mae gennym labordai maes cludadwy a rhwydweithiau synwyryddion ar gyfer astudio ansawdd dŵr ac allyriadau nwyon tŷ gwydr (CO2, N2O, CH4). Ategir hyn gan ein cyfleusterau dadansoddol canolog sy'n cynnwys yr offer diweddaraf ar gyfer nodweddu a meithrin cymunedau microbaidd (e.e., GridIon, qPCR, dPCR, NextSeq, MiSeq, RABIT, Bioadweithyddion, didolwr cell Sysmex), olrhain isotopau (e.e., 3H, 13C, 14C, 15N, 32P, 33P, 35S), dadansoddiad elfennaidd (e.e., TXRF, pXRF, ICP, Dionex) a dadansoddi llygryddion organig a metabolomeg (e.e., Orbitrap LC-MS/MS, Synapt G2-Si IMS LC-MS/MS, Xevo TQ-XS UPLC, HPLC). Cefnogir ein biowybodeg gan Uwchgyfrifiadura Cymru.
 

Ein projectau

Dysgwch am ein projectau cyfredol drwy ddarllen ein tudalennau project a’n blogiau:

Cyhoeddiadau diweddaraf

Caiff detholiad o gyhoeddiadau diweddar ymchwilwyr y grŵp Biogeocemeg Priddoedd, Gwlyptiroedd, ac Amgylcheddau Morol eu rhestru yma, ond ar gyfer yr holl gyhoeddiadau diweddaraf, darllenwch dudalennau’r ymchwilwyr unigol trwy ddilyn y dolenni uchod.

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  • Gao, L., Smith, A., Jones, D.L., Guo, Y., Lui, B., Guo, Z., Chunnan, F., Zheng, J., Cui, X. & Hill, P., 2023. How do tree species with different successional stages affect soil organic nitrogen transformations? Geoderma 430, 116319
  • Gao, L., Smith, A., Jones, D.L., Lui, B., Guo, Y., Cui, X. & Hill, P., 2024. Respiration and carbon use efficiency characteristics of soluble protein-derived carbon by soil microorganisms: A case study at afforested sites. Soil Biology and Biochemistry 188, 109255.
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  • Gresham, A., Healey, J., Eichhorn, M., Barton, O., Smith, A. & Shannon, G., 2023. Horizontal viewsheds of large herbivores as a function of woodland structure. Ecology and Evolution 13, 11.
  • King, A.J., Portugal, S.J., Strombom, D., Mann, R.P., Carrillo, J.A., Kalise, D., Croon, G.D., Barnett, H., Scerri, P., Gross, R., Chadwick, D. & Papadopoulou, M., 2023. Biologically inspired herding of animal groups by robots. Methods in Ecology and Evolution 14, 478-486.
  • Li, J., Zhang, J., Ren, S., Huang, D., Liu, F., Li, Z., Zhang, H., Zhao, M., Cao, Y., Mofolo, S., Liang, J., Xu, W., Jones, D.L., Chadwick, D.R., Liu, X. & Wang, K., 2023. Atmospheric deposition of microplastics in a rural region of North China Plain. Science of the Total Environment 877, 162947.
  • Ning, Y., Liu, S., Smith, A., Qiu, Y., Gao, H., Yuan, W., Lu, Y., Yuan, W.& Feng, S., 2023. Dynamic multi-dimensional scaling of 30+ year evolution of Chinese urban systems: patterns and performance. Science of the Total Environment 863, 160705.
  • Pan, W., Zhou, J., Tang, S., Wu, L., Ma, Q., Marsden, K.A., Chadwick, D.D.R.& Jones, D.L., 2023. Utilisation and transformation of organic and inorganic nitrogen by soil microorganisms and its regulation by excessive carbon and nitrogen availability. Biology and Fertility of Soils 59, 379-389
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  • Plaga, B., Bauhus, J., Smith, A., Gonzalez Pereira, M. & Forrester, D., 2023. Drought-related mortality modifies mixing effects on light absorption and growth in mono-specific and mixed stands of Fagus sylvatica, Alnus glutinosa and Betula pendula. Forestry cpad051.
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  • Reay, M.K., Greenfield, L.M., Graf, M., Lloyd, C.E.M., Evershed, R.P., Chadwick, D.R. & Jones, D.L., 2023. LDPE and biodegradable PLA-PBAT plastics differentially affect plant-soil nitrogen partitioning and dynamics in a Hordeum vulgare mesocosm. Journal of Hazardous Materials 447, 130825.
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  • Reay, M.K., Marsden, K., Powell, S., Rivera, L.M., Chadwick, D., Jones, D.L. & Evershed, R.P., 2023. The soil microbial community and plant biomass differentially contribute to the retention and recycling of urinary-N in grasslands. Soil Biology and Biochemistry 180, 109011.
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