Background:

Karina Marsden is a Teaching and Research Lecturer in Soil Science at Bangor University. Prior to this she completed a Marie-Sklodowska Curie Actions Global Fellowship, working between the University of Melbourne, Australia and Bangor University. She also workd on the NERC funded Uplands-N2O project as a post-doctoral researcher after completing her PhD in Soil and Environmental Science at Bangor University.

Qualifications and Membership of Proffessional Bodies:

• B.Sc. (Hons), Environmental Science, Bangor University
• Ph.D, Soil and Environmental Science, Bangor University
• Member of the Marie Curie Alumni Association
• Member of the British Society of Soil Science and Chair of the Welsh Regional Soils Discussion Group
• Member of the EDI Committee

Address: Environment Centre Wales, Bangor University, Bangor, Gwynedd, LL57 2UW

Email: k.marsden@bangor.ac.uk

Module Organiser:

• DXX-3506 Current Issues in Environmental and Related Science
• DXX-3508 Environmental Issues
• DXX2002 Water, Air and Soil Pollution

Module Contributor:

• DXX-1001 Ecosystem Function and Services
• DXX-3305 Tenerife overseas field course

Karina Marsden's research interests include sustainable food production in a changing climate, nitrogen cycling in agroecosystems, gaseous emissions from soil (particularly N₂O and N₂), methods and techniques for monitoring gaseous emissions from soil and assessing spatial and temporal variability in emissions, rhizosphere processes and plant-soil-microbe interactions. She has 30 peer-reviewed publications, a h-index of 16 and >1000 citations (Google Scholar).

’Rydwyf yn fodlon goruchwylio cwrs PhD

2024

• CyhoeddwydAre nitrification inhibitors effective in reducing N2O from farm-scale emission hotspots?
  Marsden, K., dos Santos, C. A., Freidl, J., Rowlings, D. W., Chadwick, D. & Eckard, R. J., 1 Meh 2024, Yn: Nutrient Cycling in Agroecosystems. 128, 3, t. 341-358 18 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2023

• CyhoeddwydCombining field and laboratory approaches to quantify N assimilation in a soil microbe-plant-animal grazing land system
  Reay, M. K., Marsden, K., Powell, S., Chadwick, D., Jones, D. L. & Evershed, R. P., 15 Ebr 2023, Yn: Agriculture, Ecosystems and Environment. 346, 108338.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydGreenhouse gas and ammonia emission mitigation priorities for UK policy targets
  Buckingham, S., Topp, C. F. E., Smith, P., Eory, V., Chadwick, D., Baxter, C., Cloy, J. M., Connolly, S., Cooledge, E., Cowan, N. J., Drewer, J., Duffy, C., Fox, N. J., Jebari, A., Jenkins, B., Krol, D. J., Marsden, K., McAuliffe, G. A., Morrison, S. J., O'Flaherty, V., Ramsey, R., Richards, K. G., Roehe, R., Smith, J., Smith, K., Takahashi, T., Thorman, R. E., Williams, J., Wiltshire, J. & Rees, R. M., 1 Meh 2023, Yn: Frontiers of Agricultural Science and Engineering. 10, 2, t. 268-280 13 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydMicrobial community succession in soil is mainly driven by carbon and nitrogen contents rather than phosphorus and sulphur contents
  Tang, S., Ma, Q., Marsden, K., Chadwick, D., Luo, Y., Kuzyakov, Y., Wu, L. & Jones, D. L., 1 Mai 2023, Yn: Soil Biology and Biochemistry. 180, 109019.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSeparating N2O production and consumption in intact agricultural soil cores at different moisture contents and depths
  Button, E. S., Marsden, K. A., Nightingale, P. D., Dixon, E. R., Chadwick, D. R., Cárdenas, L. M. & Jones, D. L., 4 Ebr 2023, Yn: European Journal of Soil Science. 74, 2, t. e13363
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydStraw return counteracts the negative effects of warming on microbial community and soil multifunctionality
  Wu, G., Ling, J., Zhao, D.-Q., Liu, Z.-X., Xu, Y.-P., Kuzyakov, Y., Marsden, K., Wen, Y. & Zhou, S.-L., 15 Awst 2023, Yn: Agriculture, Ecosystems and Environment. t. 108508
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe soil microbial community and plant biomass differentially contribute to the retention and recycling of urinary-N in grasslands
  Reay, M. K., Marsden, K., Powell, S., Rivera, L. M., Chadwick, D., Jones, D. L. & Evershed, R. P., 1 Mai 2023, Yn: Soil Biology and Biochemistry. 180, 109011.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydUtilisation and transformation of organic and inorganic nitrogen by soil microorganisms and its regulation by excessive carbon and nitrogen availability
  Pan, W., Zhou, J., Tang, S., Wu, L., Ma, Q., Marsden, K. A., Chadwick, D. D. R. & Jones, D. L., Mai 2023, Yn: Biology and Fertility of Soils. 59, 4, t. 379-389
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2022

• CyhoeddwydField application of pure polyethylene microplastic has no significant short-term effect on soil biological quality and function
  Brown, R., Chadwick, D., Thornton, H., Marshall, M., Bei, S., Distaso, M., Bargiela, R., Marsden, K., Clode, P., Murphy, D., Pagella, S. & Jones, D. L., 1 Chwef 2022, Yn: Soil Biology and Biochemistry. 165, 108496.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2021

• CyhoeddwydIncreasing the productivity of an upland pasture with the least environmental impacts
  Williams, N., Gibbons, J., Chadwick, D., Marsden, K. & Williams, P., 1 Awst 2021, Yn: Agriculture, Ecosystems and Environment. 315, 107449.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydLivestock-induced N2O emissions may limit the benefits of converting cropland to grazed grassland as a greenhouse gas mitigation strategy for agricultural peatlands
  Wen, Y., Freeman, B., Hunt, D., Musarika, S., Zang, H., Marsden, K. A., Evans, C. D., Chadwick, D. R. & Jones, D. L., Tach 2021, Yn: Resources, Conservation and Recycling. 174, 105764.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydOptimising storage conditions and processing of sheep urine for nitrogen cycle and gaseous emission measurements from urine patches
  Charteris, A. F., Marsden, K. A., Evans, J. R., Barrat, H. A., Loick, N., Jones, D. L., Chadwick, D. R. & Cárdenas, L. M., 9 Meh 2021, Yn: Scientific Reports. 11, 1, 12116.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydQuantifying the frequency and volume of urine deposition by grazing sheep using tri-axial accelerometers
  Marsden, K. A., Lush, L., Holmberg, J. A., Harris, I. M., Whelan, M. J., Webb, S., King, A. J., Wilson, R. P., Jones, D. L., Charteris, A. F., Cardenas, L. M. & Chadwick, D. R., 30 Meh 2021, Yn: Animal. 15, 6, 100234.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydWithin-field spatial variability of greenhouse gas fluxes from an extensive and intensive sheep-grazed pasture
  Charteris, A. F., Harris, P., Marsden, K. A., Harris, I. M., Guo, Z., Beaumont, D. A., Taylor, H., Sanfratello, G., Jones, D. L., Johnson, S. C. M., Whelan, M. J., Howden, N., Sint, H., Chadwick, D. R. & Cardenas, L. M., 1 Meh 2021, Yn: Agriculture, Ecosystems and Environment. 312, 107355.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2020

• CyhoeddwydMeta-analysis of global livestock urine-derived nitrous oxide emissions from agricultural soils
  Lopez-Aizpun, M., Horrocks, C. A., Charteris, A. F., Marsden, K., Ciganda, V., Evans, J. R., Chadwick, D. & Cardenas, L. M., 1 Ebr 2020, Yn: Global Change Biology. t. 2002-2013
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSheep urination frequency, volume, N excretion and chemical composition: Implications for subsequent agricultural N losses
  Marsden, K. A., Lush, L., Holmberg, J. A., Whelan, M. J., King, A. J., Wilson, R. P., Charteris, A. F., Cardenas, L. M., Jones, D. L. & Chadwick, D. R., 15 Hyd 2020, Yn: Agriculture, Ecosystems and Environment. 302, 107073.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2019

• CyhoeddwydAngiosperm symbioses with non-mycorrhizal fungal partners enhance N acquisition from ancient organic matter in a warming maritime Antarctic
  Hill, P., Broughton, R., Bougoure, J., Havelange, W., Newsham, K. K., Gran, H., Murphy, D. V., Clode, P., Ramayah, S., Marsden, K., Quilliam, R., Roberts, P., Brown, C., Read, D. J., DeLuca, T., Bardgett, R. D., Hopkins, D. W. & Jones, D. L., Rhag 2019, Yn: Ecology Letters. 22, 12, t. 2111-2119 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydNitrification represents the bottle-neck of sheep urine patch N2O emissions from extensively grazed organic soils
  Marsden, K. A., Holmberg, J. A., Jones, D. L., Charteris, A. F., Cardenas, L. M. & Chadwick, D. R., 10 Rhag 2019, Yn: Science of the Total Environment. 695, 133786.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2018

• CyhoeddwydClassification of sheep urination events using accelerometers to aid improved measurements of livestock contributions to nitrous oxide emissions
  Lush, L., Wilson, R. P., Holton, M. D., Hopkins, P., Marsden, K., Chadwick, D. & King, A. J., 1 Gorff 2018, Yn: Computers and Electronics in Agriculture. 150, t. 170-177
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDetermining the influence of environmental and edaphic factors on the fate of the nitrification inhibitors DCD and DMPP in soil
  Guardia, G., Marsden, K., Vallejo, A., Jones, D. & Chadwick, D., 15 Mai 2018, Yn: Science of the Total Environment. 624, t. 1202-1212
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSheep urine patch N2O emissions are lower from extensively-managed than intensively-managed grasslands
  Marsden, K., Holmberg, J., Jones, D. L. & Chadwick, D., 1 Hyd 2018, Yn: Agriculture, Ecosystems and Environment. 265, t. 264-274
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2017

• CyhoeddwydDMPP is ineffective at mitigating N2O emissions from sheep urine patches in a UK grassland under summer conditions
  Marsden, K., Jones, D. & Chadwick, D., 1 Awst 2017, Yn: Agriculture, Ecosystems and Environment. 246, t. 1-11 11 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDiet management to effectively abate N2O emissions from surface applied pig slurry
  Sanchez-Martin, L., Beccaccia, A., De.Blas, C., Garcia-Rebollar, P., Estelles, F., Marsden, K., Chadwick, D. & Vallejo, A., 15 Chwef 2017, Yn: Agriculture, Ecosystems and Environment. 239, t. 1-11
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2016

• CyhoeddwydDisentangling the effect of sheep urine patch size and nitrogen loading rate on cumulative N2O emissions
  Marsden, K., Jones, D. L. & Chadwick, D., 9 Chwef 2016, Yn: Animal Production Science. 56, 3, t. 265-275
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe mobility of nitrification inhibitors under simulated ruminant urine deposition and rainfall: a comparison between DCD and DMPP
  Marsden, K. A., Marin-Martinez, A. J., Vallejo, A., Hill, P. W., Jones, D. & Chadwick, D. R., 1 Mai 2016, Yn: Biology and Fertility of Soils. 52, 4, t. 491-503
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe urine patch diffusional area: An important N2O source?
  Marsden, K. A., Jones, D. & Chadwick, D. R., Ion 2016, Yn: Soil Biology and Biochemistry. 92, January, t. 161-170
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2015

• CyhoeddwydPlant acquisition and metabolism of the synthetic nitrification inhibitor dicyandiamide and naturally-occurring guanidine from agricultural soils
  Marsden, K. A., Scowen, M., Hill, P. W., Jones, D. L. & Chadwick, D. R., Hyd 2015, Yn: Plant and Soil. 395, 1, t. 201-214
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2013

• CyhoeddwydHow significant to plant N nutrition is the direct consumption of soil microbes by roots?
  Hill, P. W., Marsden, K. A. & Jones, D. L., 30 Mai 2013, Yn: New Phytologist. 199, 4, t. 948-955
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2012

• CyhoeddwydNutrient dynamics, microbial growth and weed emergence in biochar amended soil are influenced by time since application and reapplication rate
  Quilliam, R. S., Marsden, K. A., Gertler, C., Rousk, J., DeLuca, T. H. & Jones, D. L., 1 Medi 2012, Yn: Agriculture, Ecosystems and Environment. 158, t. 192-199
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

• Are lower plants large players in the overall carbon budget of temperate rainforest systems?

  06/04/2025 – 15/10/2026 (Wrthi'n gweithredu)