The chemical nature and cycling of nutrients in the environment

Plant Nutrition

The focus of my research is understanding the chemical nature and cycling of nutrients in the environment. In particular, I am interested in identifying the diversity of inorganic and organic forms of phosphorus, and understanding the processes governing their flux in soil-plant systems. The overall goal is to provide new insight on the biogeochemistry of nutrients that will lead to improved outcomes for agricultural and environmental contexts.

Recent publications

  • The structural composition of soil phosphomonoesters as determined by solution P-31 NMR spectroscopy and transverse relaxation (T-2) experiments
    By: McLaren, Timothy I.; Verel, Rene; Frossard, Emmanuel
    GEODERMA   Volume: 345   Pages: 31-37   10.1016/j.geoderma.2019.03.015 JUL 2019
  • Phosphorus characterization and plant availability in soil profiles after long-term urban waste application
    By: Glaesner, Nadia; van der Bom, Frederik; Bruun, Sander; McLaren, T; Larsen, FH; Magid, J
    GEODERMA 338   Pages: 136-144   10.1016/j.geoderma.2018.11.046 MAR 2019
  • Phosphorus dynamics in a tropical forest soil restored after strip mining
    By: Spain, Alister, V; Tibbett, Mark; Ridd, Michael; McLaren, Timothy I.
    PLANT AND SOIL 427   Issue: 1-2   Special Issue: SI   Pages: 105-123  10.1007/s11104-018-3668-8  JUN 2018
  • Soil solution phosphorus turnover: derivation, interpretation, and insights from a global compilation of isotope exchange kinetic studies
    By: Helfenstein, Julian; Jegminat, Jannes; McLaren, Timothy I.; Frossard, E.
    BIOGEOSCIENCES 15   Issue: 1   Pages: 105-114   10.5194/bg-15-105-2018 JAN 8 2018
  • Organic phosphorus in the terrestrial environment: a perspective on the state of the art and future priorities
    George TS, Giles, CD, Menezes-Blackburn D, Condron LM, Gama-Rodrigues AC, Jaisi D, Lang F, Neal AL, Stutter MI, Almeida DS, Bol R, Cabugao AC, Celi L, Cotner JB, Feng G, Goll DS, Hallama M, Krueger J, Plassard C, Rosling A, Darch T, Fraser T, Giesler R, Richardson AE, Tamburini F, Shand CA, Lumsdon DG, Zhang H, Blackwell MSA, Wearing C, Mezeli MM, Almås ÅR, Audette Y, Bertrand I, Beyhaut E, Boitt G, Bradshaw N, Brearley CA, Bruulsema TW, Ciais P, Cozzolino V, Duran PC, Mora ML, de Menezes AB, Dodd RJ, Dunfield K, Engl C, Frazão JJ, Garland G, Jiménez JLG, Graca J, Granger SJ, Harrison AF, Heuck C, Hou EQ, Johnes PJ, Kaiser K, Kjaer HA, Klumpp E, Lamb AL, Macintosh KA, Mackay EB, McGrath J, McIntyre C, McLaren TI, Mészáros E, Missong A, Mooshammer M, Negrón CP, Nelson LA, Pfahler V, Poblete-Grant P, Randall M, Seguel A, Seth K, Smith AC, Smits MM, Sobarzo JA, Spohn M, Tawaraya K, Tibbett M, Voroney P, Wallander H, Wang L, Wasaki J & Haygarth PM
    Plant & Soil 427(1-2):191-208 10.1007/s11104-017-3391-x  (2018)
  • Direct recovery of P-33-labelled fertiliser phosphorus in subterranean clover (Trifolium subterraneum) pastures under field conditions - The role of agronomic management
    By: McLaren, Timothy I.; McBeath, Therese M.; Simpson, Richard J.; Richardson, Alan E; Stefanski, A ; Guppy, CN; Smernik, RJ; Rivers, C; Johnston, C; McLaughlin, MJ
    AGRICULTURE ECOSYSTEMS & ENVIRONMENT 246   Pages: 144-156   10.1016/j.agee.2017.05.029 AUG 1 2017
  • The chemical nature of organic phosphorus that accumulates in fertilized soils of a temperate pasture as determined by solution P-31 NMR spectroscopy
    By: McLaren, Timothy I.; Smernik, Ronald J.; Simpson, Richard J.; McLaughlin, MJ; McBeath, TM; Guppy, CN; Richardson, AE
    JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE 180   Issue: 1   Pages: 27-38   10.1002/jpln.201600076 FEB 2017
  • The composition of organic phosphorus in soils of the Snowy Mountains region of south-eastern Australia
    By: Doolette, Ashlea L.; Smernik, Ronald J.; McLaren, Timothy I.
    SOIL RESEARCH 55   Issue: 1   Pages: 10-18   10.1071/SR16058 2017

 

 

Timothy McLaren ETH Zurich

Dr. Timothy McLaren
ETH Zurich
Institute of Agricultural Sciences

+41 76 818 67 08

Research topics

  • The chemical nature of inorganic and organic phosphorus in soil
  • The fate of fertiliser phosphorus in terrestrial ecosystems
  • Processes governing the release and stabilisation of soil phosphorus
  • Agronomic management strategies that improve phosphorus use efficiency
  • Analysis of soil, plant and fertiliser

Interdisciplinary

  • Soil science
  • Soil chemistry
  • Soil fertility
  • Chemical nature of nutrients
  • Agroecosystems
  • Nuclear magnetic resonance (NMR) spectroscopy