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
- Crop type exerts greater influence upon rhizosphere phosphohydrolase gene abundance and phylogenetic diversity than phosphorus fertilization
Neal, Andrew L.; McLaren, Timothy; Campolino, Mariana Lourenco; Hughes, David; Coelho, Antonio Marcos; et al.
Fems Microbiology Ecology 10.1093/femsec/fiab033 APR 2021 - Phosphorus retention in constructed wetlands enhanced by zeolite- and clinopyroxene-dominated lava sand
Alewell, Christine; Huang, Jen-How; McLaren, Timothy, I; Huber, Lea; Bunemann, Else K.
Hydrological Processes, 10.1002/hyp.14040 FEB 2021 - The chemical nature of soil organic phosphorus: A critical review and global compilation of quantitative data
McLaren, Timothy I.; Smernik, Ronald J.; McLaughlin, Michael J.; Doolette, Ashlea L.; Richardson, Alan E.; et al.
Advances In Agronomy, Vol 160, 10.1016/bs.agron.2019.10.001 Published: 2020 - Identification of lower-order inositol phosphates (IP5 and IP4) in soil extracts as determined by hypobromite oxidation and solution P-31 NMR spectroscopy
Reusser, Jolanda E.; Verel, Rene; Zindel, Daniel; Frossard, Emmanuel; McLaren, Timothy, I
Biogeosciences DOI: 10.5194/bg-17-5079-2020 OCT 21 2020 - Phosphorus desorption and isotope exchange kinetics in agricultural soils
Braun, Sabina; McLaren, Timothy I.; Frossard, Emmanuel; Tuyishime, J. R. Marius; Borjesson, Gunnar; et al.
Soil Use And Management DOI: 10.1111/sum.12674 NOV 2020 - Quantitative measures ofmyo-IP(6)in soil using solution(31)P NMR spectroscopy and spectral deconvolution fitting including a broad signal
Reusser, Jolanda E.; Verel, Rene; Frossard, Emmanuel; McLaren, Timothy, I
Environmental Science-processes & Impacts DOI: 10.1039/c9em00485h APR 1 2020 - Soil phosphorus pools with addition of fertiliser phosphorus in a long-term grazing experiment
McLaren, Timothy I.; Smernik, Ronald J.; McLaughlin, Michael J.; McBeath, Therese M.; McCaskill, Malcolm R.; et al.
Nutrient Cycling In Agroecosystems, DOI: 10.1007/s10705-019-10035-y - Transformation of Calcium Phosphates in Alkaline Vertisols by Acidified Incubation
Andersson, KO; Tighe, MK; Guppy, CN; Milham, PJ; McLaren, TI; Schefe, CR; Lombi, E; Lisle, LM; Klysubun, W
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 53 (17):10131-10138; 10.1021/acs.est.9b01565 SEP 3 2019 - Influence of long-term phosphorus fertilisation history on the availability and chemical nature of soil phosphorus
van der Bom, FJT; McLaren, TI; Doolette, AL; Magid, J; Frossard, E; Oberson, A; Jensen, LS
GEODERMA, 355 10.1016/j.geoderma.2019.113909 DEC 1 2019 - The structural composition of soil phosphomonoesters as determined by solution P-31 NMR spectroscopy and transverse relaxation (T-2) experiments
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
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
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
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
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
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
Doolette, Ashlea L.; Smernik, Ronald J.; McLaren, Timothy I.
SOIL RESEARCH 55(1): 10-18 10.1071/SR16058 2017 - …

Dr. Timothy McLaren
ETH Zurich
Institute of Agricultural Sciences
+41 76 818 67 08
Publications
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