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Doctor Chanda Trivedi

Chanda TrivediCandidature

Graduated PhD 2018

Thesis title

Application of Ecological Theory to Explain Microbial Regulation of Soil Function

Research Project

Soil microbial communities are intricately linked to ecosystem functioning because they play important roles in vital ecosystem processes, such as nutrient cycling, decomposition of organic matter and waste, nutrient availability, degradation of pesticides, soil structure and plant growth and health. Despite this, soil microbes receive little attention in the ongoing debate about global biodiversity loss, global change and conservation issues. We've paid a lot of attention to the relationship between ecosystems health and biodiversity in above ground communities, but very little notice has been taken of what goes on beneath the surface.

Macro-ecology has proposed a number of testable ecological hypotheses. The aim of my research is to apply theoretical principles used in plant diversity ecology to see the relationship between microbial diversity, soil function and ecosystem stability and the role diversity plays in the resilience of microbial communities to disturbance. Through artificial manipulation and fluctuation experiments combined with advanced modelling approaches my research will test the applicability of different ecological hypotheses, e.g., intermediate disturbance hypothesis and the diversity-stability paradigm in soil microbial communities. I will use advanced sequencing techniques to understand the impact of aridity in global scale linked loss of microbial diversity on specialized soil functions. My research will provide direct evidence for the functional significance of microbial communities beyond statistical correlation and will be a step forward in opening up "microbial blackbox" to include their structure and activities in Earth Ecosystem Models.

Research Project Supervisors

Professor Brajesh K Singh, Professor Peter Reich, Doctor Manuel Delgado Baquerizo

Publications

Delgado-Baquerizo M, Reich PB, Trivedi C, Eldridge DJ, Abades S, Alfaro FD, Bastida F, Berhe AA, Cutler NA, Gallardo A, Garcia-Velazquez L, Hart SC, Hayes PE, He JZ, Hseu ZY, Hu HW, Kirchmair M, Neuhauser S, Perez CA, Reed SC, Santos F, Sullivan BW, Trivedi P, Wang JT, Weber-Grullon L, Williams MA, Singh BK, (2020) 'Multiple elements of soil biodiversity drive ecosystem functions across biomes', Nature Ecology & Evolution, vol.4, no.2, pp 210-220

Trivedi C, Delgado-Baquerizo M, Hamonts K, Lai K, Reich PB, Singh BK, (2019) 'Losses in microbial functional diversity reduce the rate of key soil processes', Soil Biology and Biochemistry, vol.135, pp 267-274

Trivedi C, Reich PB, Maestre FT, Hu HW, Singh BK, Delgado-Baquerizo M, (2019) 'Plant-driven niche differentiation of ammonia-oxidizing bacteria and archaea in global drylands', ISME Journal, vol.13, no.11, pp 2727-2736

Delgado-Baquerizo M, Trivedi P, Trivedi C, Eldridge DJ, Reich PB, Jeffries TC, Singh BK, (2017) 'Microbial richness and composition independently drive soil multifunctionality', Functional Ecology, vol.31, no.12, pp 2330-2343

Trivedi P, Delgado-Baquerizo M, Jeffries TC, Trivedi C, Anderson IC, Lai K, Mcnee M, Flower K, Singh BP, Minkey D, Singh BK, (2017) 'Soil aggregation and associated microbial communities modify the impact of agricultural management on carbon content', Environmental Microbbiology, vol.19, no.8, pp 3070-3086, Special Issue: SI

Trivedi P, Delgado-Baquerizo M, Trivedi C, Hamonts K, Anderson IC, Singh BK, (2017) 'Keystone microbial taxa regulate the invasion of a fungal pathogen in agro-ecosystems', Soil Biology and Biochemistry, vol.111, pp 10-14

Trivedi P, Delgado-Baquerizo M, Trivedi C, Hu HW, Anderson IC, Jeffries TC, Zhou JZ, Singh BK, (2016) 'Microbial regulation of the soil carbon cycle: evidence from gene-enzyme relationships', ISME Journal, vol.10, no.11, pp 2593-2604

Trivedi P, Trivedi C, Grinyer J, Anderson IC, Singh BK, (2016) 'Harnessing Host-Vector Microbiome for Sustainable Plant Disease Management of Phloem-Limited Bacteria', Frontiers in Plant Science, vol.7, Article no.1423

Trivedi P, Rochester IJ, Trivedi C, Van Nostrand JD, Zhou J, Karunaratne S, Anderson IC, Singh BK, (2015) 'Soil aggregate size mediates the impacts of cropping regimes on soil carbon and microbial communities', Soil Biology and Biochemistry, vol.91, Article no.6302, pp 169-181

Koh DK, Choo TH, Maeng SJ, Trivedi C, (2008) 'Regional frequency analysis for rainfall using L- Moment', Korean Journal of Hydrology, vol.8, no.3, pp 252-263

Ram J, Tewari B,  and Pant C*, (2006) 'Infestation of oak trees by the flowering parasite (Taxillus vestitus all.) Danser) at Nainital in Uttaranchal', Current Science, vol.90, no.4, pp 562-563.