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).

I am willing to supervise a PhD

2024

• PublishedAre 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 Jun 2024, In: Nutrient Cycling in Agroecosystems. 128, 3, p. 341-358 18 p.
  Research output: Contribution to journal › Article › peer-review

2023

• PublishedCombining 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 Apr 2023, In: Agriculture, Ecosystems and Environment. 346, 108338.
  Research output: Contribution to journal › Article › peer-review
• PublishedGreenhouse 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 Jun 2023, In: Frontiers of Agricultural Science and Engineering. 10, 2, p. 268-280 13 p.
  Research output: Contribution to journal › Article › peer-review
• PublishedMicrobial 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 May 2023, In: Soil Biology and Biochemistry. 180, 109019.
  Research output: Contribution to journal › Article › peer-review
• PublishedSeparating 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 Apr 2023, In: European Journal of Soil Science. 74, 2, p. e13363
  Research output: Contribution to journal › Article › peer-review
• PublishedStraw 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 Aug 2023, In: Agriculture, Ecosystems and Environment. p. 108508
  Research output: Contribution to journal › Article › peer-review
• PublishedThe 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 May 2023, In: Soil Biology and Biochemistry. 180, 109011.
  Research output: Contribution to journal › Article › peer-review
• PublishedUtilisation 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., May 2023, In: Biology and Fertility of Soils. 59, 4, p. 379-389
  Research output: Contribution to journal › Article › peer-review

2022

• PublishedField 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 Feb 2022, In: Soil Biology and Biochemistry. 165, 108496.
  Research output: Contribution to journal › Article › peer-review

2021

• PublishedIncreasing the productivity of an upland pasture with the least environmental impacts
  Williams, N., Gibbons, J., Chadwick, D., Marsden, K. & Williams, P., 1 Aug 2021, In: Agriculture, Ecosystems and Environment. 315, 107449.
  Research output: Contribution to journal › Article › peer-review
• PublishedLivestock-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., Nov 2021, In: Resources, Conservation and Recycling. 174, 105764.
  Research output: Contribution to journal › Article › peer-review
• PublishedOptimising 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 Jun 2021, In: Scientific Reports. 11, 1, 12116.
  Research output: Contribution to journal › Article › peer-review
• PublishedQuantifying 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 Jun 2021, In: Animal. 15, 6, 100234.
  Research output: Contribution to journal › Article › peer-review
• PublishedWithin-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 Jun 2021, In: Agriculture, Ecosystems and Environment. 312, 107355.
  Research output: Contribution to journal › Article › peer-review

2020

• PublishedMeta-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 Apr 2020, In: Global Change Biology. p. 2002-2013
  Research output: Contribution to journal › Article › peer-review
• PublishedSheep 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 Oct 2020, In: Agriculture, Ecosystems and Environment. 302, 107073.
  Research output: Contribution to journal › Article › peer-review

2019

• PublishedAngiosperm 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., Dec 2019, In: Ecology Letters. 22, 12, p. 2111-2119 9 p.
  Research output: Contribution to journal › Article › peer-review
• PublishedNitrification 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 Dec 2019, In: Science of the Total Environment. 695, 133786.
  Research output: Contribution to journal › Article › peer-review

2018

• PublishedClassification 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 Jul 2018, In: Computers and Electronics in Agriculture. 150, p. 170-177
  Research output: Contribution to journal › Article › peer-review
• PublishedDetermining 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 May 2018, In: Science of the Total Environment. 624, p. 1202-1212
  Research output: Contribution to journal › Article › peer-review
• PublishedSheep urine patch N2O emissions are lower from extensively-managed than intensively-managed grasslands
  Marsden, K., Holmberg, J., Jones, D. L. & Chadwick, D., 1 Oct 2018, In: Agriculture, Ecosystems and Environment. 265, p. 264-274
  Research output: Contribution to journal › Article › peer-review

2017

• PublishedDMPP is ineffective at mitigating N2O emissions from sheep urine patches in a UK grassland under summer conditions
  Marsden, K., Jones, D. & Chadwick, D., 1 Aug 2017, In: Agriculture, Ecosystems and Environment. 246, p. 1-11 11 p.
  Research output: Contribution to journal › Article › peer-review
• PublishedDiet 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 Feb 2017, In: Agriculture, Ecosystems and Environment. 239, p. 1-11
  Research output: Contribution to journal › Article › peer-review

2016

• PublishedDisentangling the effect of sheep urine patch size and nitrogen loading rate on cumulative N2O emissions
  Marsden, K., Jones, D. L. & Chadwick, D., 9 Feb 2016, In: Animal Production Science. 56, 3, p. 265-275
  Research output: Contribution to journal › Article › peer-review
• PublishedThe 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 May 2016, In: Biology and Fertility of Soils. 52, 4, p. 491-503
  Research output: Contribution to journal › Article › peer-review
• PublishedThe urine patch diffusional area: An important N2O source?
  Marsden, K. A., Jones, D. & Chadwick, D. R., Jan 2016, In: Soil Biology and Biochemistry. 92, January, p. 161-170
  Research output: Contribution to journal › Article › peer-review

2015

• PublishedPlant 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., Oct 2015, In: Plant and Soil. 395, 1, p. 201-214
  Research output: Contribution to journal › Article › peer-review

2013

• PublishedHow significant to plant N nutrition is the direct consumption of soil microbes by roots?
  Hill, P. W., Marsden, K. A. & Jones, D. L., 30 May 2013, In: New Phytologist. 199, 4, p. 948-955
  Research output: Contribution to journal › Article › peer-review

2012

• PublishedNutrient 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 Sept 2012, In: Agriculture, Ecosystems and Environment. 158, p. 192-199
  Research output: Contribution to journal › Article › peer-review

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

  06/04/2025 – 15/10/2026 (Active)