Lilia Serrano Grijalva

Dr. Lilia Serrano Grijalva

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Visiting Address

Droevendaalsesteeg 10
6708 PB Wageningen

+31 (0) 317 47 34 00

The Netherlands

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About

My focus is understanding the role of soil networks involving microbial communities for biogeochemical processes related to the functioning of agroecosystems. This is part of the project (SOFT; Steering Organic Farming Transition), supported by MSCA-2019

Biography

I’m Lilia. I grew up in Sonora, Mexico. I lived between the beach and the desert. I worked at the Mexican agency for the protection of the natural environment as a nature resource inspector. After this, during my MSc and PhD thesis, I focused on the consequences of human impacts on the structure of trophic networks and the biogeochemistry of wetlands in Mexico and Spain using stable isotopes. I also worked as research assistant at the Hawkesbury Institute for the Environment, Australia. After 4 years of maternity break, I am very happy to back to science with a MSCA fellowship at NIOO, where I am working under the supervision of Prof. Wim van der Putten, Dr. Ciska Veen and Dr. Raul Ochoa-Hueso.

One of my goal is to study the effect of agricultural management on soil enzyme activity
One of my goal is to study the effect of agricultural management on soil enzyme activity
My study is about understanding how agricultural practices such as crop rotation diversification can alter the soil microbial community networks within the soil aggregates, and what these alterations mean in terms of ecosystem functioning
This project is also to understand how agricultural practices such as crop rotation diversification can alter the soil microbial community networks within the soil aggregates and their link with ecosystem services
Measuring soil enzymes
TE Department
TE Department

Research groups

CV

Employment

  • 2020–Present
    NIOO- Postdoc. Netherlands
  • 2013–2016
    Research Assistant. Hawkesbury Institute for the Environment. Western Sydney University. Australia
  • 2001–2004
    Environmental Compliance Inspector. Mexican agency for the protection of the natural environment. México

Education

  • 2009–2013
    PhD in Ecology. Autonomous University of Madrid, Spain
  • 2006–2008
    MSc in Ecology. Instituto Tecnológico de Sonora (ITSON). México
  • 1996–2000
    BSc in Ecology. Centro de Estudios Superiores del Estado de Sonora (CESUES), México. Extraordinary Degree Award

Grants

  • 2020
    MSCA-Individual fellowship
    Budget: €186,000
    European Comission
  • 2009
    JAE-PREDOC FELLOWSHIP
    Budget: €60,000
    CSIC-Spanish National Research Council
  • 2006
    MSc in Ecology
    Budget: €8,000
    CONACYT- National Council of Science and Technology

Publications

Key publications

  • Ecological Monographs
    2020

    Links between microbial communities, soil functioning and plant nutrition under altered precipitation regimes

    Raúl Ochoa-Hueso,Valentina Arca,Manuel Delgado-Baquerizo,Kelly Hamonts,Juan Piñeiro,Lilia Serrano-Grijalva,Julien Shawyer,Sally
    The size, frequency, and timing of precipitation events are predicted to become more variable worldwide. Despite these predictions, the importance of changes in precipitation in driving multiple above- and belowground ecosystem attributes simultaneously remains largely underexplored. Here, we carried out 3 yr of rainfall manipulations at the DRI-Grass facility, located in a mesic grassland in eastern Australia. Treatments were implemented through automated water reapplication and included +50% and −50% amount, reduced frequency of events, and an extreme summer drought. We evaluated the spatiotemporal responses of multiple ecosystem attributes including microbial biomass, community composition and activity, soil nutrient content and availability, and plant nutritional status to altered rainfall regimes. We found that changing precipitation patterns resulted in multiple direct and indirect changes in microbial communities and soil and plant nutrient content. Main results included greater availability of soil macronutrients and reduced availability of micronutrients under drought, and taxon-specific changes in the composition of soil microbial communities in response to altered rainfall. Moreover, using structural equation modeling, we showed that, in summer 2015, plant macronutrient contents, a widely used ecological indicator of pasture quality, were simultaneously explained by greater soil nutrient availability and the structure of soil microbial communities, and significantly reduced by lower rainfall. Plant micronutrients were also reduced by lower rainfall and explained by changes in microbial attributes. Despite treatment effects on many of the soil, microbial, and plant variables analyzed across the 3 yr of study, many of these ecosystem attributes varied greatly across sampling events. This resulted in many significant interactions between the rainfall treatments and experimental duration, suggesting complex system-level responses to changing rainfall in our grassland, and a high natural buffering capacity of the ecosystem to varying rainfall conditions. Some interactions manifested as changes in the coefficient of variation of ecosystem attributes, particularly in response to changes in the timing of precipitation events and the extreme summer drought. Finally, we posit that a detailed understanding of plant–soil–microbial interactions, and the role of climate in modifying these linkages, will be key for adapting the sustainability of grasslands to a future that will be shaped by climate change.
  • Ecosystems
    2018

    Elevated Atmospheric CO2 Increases Root Exudation of Carbon in Wetlands: Results from the First Free-Air CO2 Enrichment Facility

    S. Sánchez-Carrillo, M. Álvarez-Cobelas, D.G. Angeler, L. Serrano-Grijalva, R.Sánchez-Andrés, S. Cirujano
    Experiments employing free-air CO2 enrichment (FACE) facilities have indicated that elevated atmospheric carbon dioxide (eCO2) stimulates growth in diverse terrestrial ecosystems. Studies of the effects of eCO2 on wetland plants have indicated a similar response, but these studies were mostly performed in growth chambers. We conducted a 2-year FACE experiment [CO2 ≈ 582 µmol mol−1] in a marsh in Spain to test whether the common reed (Phragmites australis) responds to carbon enrichment, as previously reported in other macrophytes. More specifically, we tested the effect of eCO2 on P. australis growth, photosynthesis, transpiration, and biomass, its effect on modifying plant and soil ratios of carbon, nitrogen, and phosphorus, and whether the strong environmental variability of this wetland modulates these responses. Our findings show that effects of eCO2 in this wetland environment are more complex than previously believed, probably due to hydrological effects. The effects of eCO2 on reed plants were cumulative and manifested at the end of the growing season as increased 38–44% instantaneous transpiration efficiency (ratio of net photosynthesis to transpiration), which was dependent on plant age. However, this increase did not result in a significant increase in biomass, because of excessive root exudation of carbon. These observations contrast with previous observations of wetland plants to increased atmospheric CO2 in growth chambers and shed new light on the role of wetland plants as a carbon sink in the face of global climate change. The combined effects of water stress, eCO2, and soil carbon processes must be considered when assessing the function of wetlands as a carbon sink under global change
  • Environmental Science and Pollution Research volume
    2017

    Nitrogen deposition reduces the cover of biocrust-forming lichens and soil pigment content in a semiarid Mediterranean shrubland

    Raúl Ochoa-Hueso, Tatiana Mondragon-Cortés, Laura Concostrina-Zubiri, Lilia Serrano-Grijalva & Belén Estébanez
    Biocrusts are key drivers of the structure and functioning of drylands and are very sensitive to disturbance, including atmospheric nitrogen (N) deposition. We studied the impacts of simulated N deposition on biocrust community composition and soil photosynthetic and photoprotective pigment content after five years of N application in a European semiarid Mediterranean shrubland. The experiment consisted in six experimental blocks with four plots, each receiving 0, 10, 20, or 50 kg NH4NO3-N ha−1 year−1 + 6–7 kg N ha−1 year−1 background. After 5 years of N application, total lichen cover decreased up to 50% compared to control conditions and these changes were only clearly evident when evaluated from a temporal perspective (i.e. as the percentage of change from the first survey in 2008 to the last survey in 2012). In contrast, moss cover did not change in response to N, suggesting that biocrust community alterations operate via species- and functional group-specific effects. Interestingly, between-year variations in biocrust cover tracked variations in autumnal precipitation, showing that these communities are more dynamic than previously thought. Biocrust species alterations in response to N were, however, often secondary when compared to the role of ecologically relevant drivers such as soil pH and shrub cover, which greatly determined the composition and inter-annual dynamics of the biocrust community. Similarly, cyanobacterial abundance and soil pigment concentration were greatly determined by biotic and abiotic interactions, soil pH for pigments, and organic matter content and shrub cover for cyanobacteria. Biocrusts, and particularly the lichen component, are highly sensitive to N deposition and their responses to pollutant N can be best understood when evaluated from a temporal and multivariate perspective, including impacts mediated by interactions with biotic and abiotic drivers.
  • Wetlands
    2015

    A Free Air CO2 Enrichment (FACE) Facility in a Wetland to Study the Effects of Elevated Atmospheric Carbon Dioxide

    S. Sánchez-Carrillo, R. Morea, L. Serrano-Grijalva, A. Meco & R. Sánchez-Andrés
    The Free Air CO2 Enrichment (FACE) system has proved suitable for exposing plants to elevated [CO2] with minimal disturbance of their natural environment. Here we describe a FACE facility in a floodplain wetland in detail and, additionally, its performance after the first year of operation (2012). The FACE system consisted of six 3-m diameter emission rings in which Phragmitesaustralis was grown. The target [CO2] was 550 μmol mol−1 and fertilization was carried out continuously. Daily temporal [CO2] performance was adequate with 61 and 83 % of air samples at the ring’s centre having a [CO2] within 10 and 20 % of the target, respectively, with values closest to their target during summer months and daytime. Spatial [CO2] distribution showed no significant gradients across the ring. Increased wind speed improved the system’s spatial performance, as [CO2] was within ±10 % of the target in the whole ring. Across the entire fertilization season, CO2 requirements for maintaining a mean [CO2] of 582 μmol mol−1 in wetland plots averaged 17.4 kg CO2 ring−1 day−1. Our requirements (2.5 kg CO2 m−2 day−1) were very low compared to other FACE systems, demonstrating its high potential to study the effects of elevated CO2 in wetlands at low cost.
  • Journal of Experimental Marine Biology and Ecology
    2011

    Effects of shrimp-farm effluents on the food web structure in subtropical coastal lagoons

    L.Serrano-Grijalva, S.Sánchez-Carrillo, D.G.Angeler, R.Sánchez-Andrés, M.Álvarez-Cobelas
    Although numerous studies have reported the negative effects of shrimp aquaculture on water quality, little is known about the ecological effects of these practices in coastal lagoons and near-shore marine habitats. The impact of shrimp-farm effluents on the food webs of an impacted subtropical coastal lagoon in the Gulf of California was evaluated through measurements of isotopic (δ13C, δ15N) signatures in sediments, plants and animals, and compared with the results of a near-pristine reference site. Degradation was manifested in a strong reduction on fish diversity at the perturbed site. δ13C signatures provided ambiguous evidence of degradation while δ15N was a better descriptor of shrimp-farm effluent impact on coastal lagoon food webs. The site receiving nutrient-rich discharges showed significant enrichment of δ15N (≈ 5‰) in sediments, macroalgae, benthic algae, filterfeeders and omnivorous feeders, resulting in qualitative differences in foodweb structure between both lagoons. The food web in the perturbed site was sustained by sediment detritus and dominated by opportunistic species. The lowest influence on δ15N signatures by aquaculture discharges recorded in the upper trophic levels could be explained by the shift in the composition of biotic communities, and associated feeding strategies. While alterations in resource availability do not affect directly food chain length, trophic linkages between food web compartments can be reduced as a result of shrimp farm impacts. Our study demonstrates that nutrient-enriched discharges from shrimp-farm aquaculture generate changes in the availability of food sources, which reduce biodiversity and alter structural and functional food web characteristics.

Peer-reviewed publications

  • Plant and Soil
    2022

    Phosphorus and water supply independently control productivity and soil enzyme activity responses to elevated CO2 in an understorey community from a Eucalyptus woodland

    Juan Piñeiro, Raul Ochoa-Hueso, Lilia Serrano Grijalva, Sally A. Power
    Aims

    While it is well-established that nitrogen (N) availability regulates elevated [CO2] (eCO2) effects on plant growth and soil carbon (C) storage in N-limited environments, there are fewer studies investigating the role of phosphorous (P) supply on such responses in P-limited environments. In this study, we explored whether P fertilization influences the response of plant growth, soil enzyme activity and C fluxes to eCO2, and determined how different levels of water availability regulate these processes.
    Methods

    We used soil collected from a temperate, P-limited Eucalyptus woodland containing the native soil seed bank to grow a potted replica of local understory communities. We exposed the emerging communities to eCO2 under two contrasting water levels and two levels of P fertilization. We assessed plant biomass allocation, the rhizosphere activity of extracellular enzymes related to C, N and P cycles, and pot-level CO2 fluxes.
    Results

    The positive effects of eCO2 on plant production and ecosystem C dynamics were strongly constrained by low levels of P availability. Enhanced water supply increased rhizosphere enzyme activity with minor impacts on plant biomass responses to eCO2. Our data also suggest that plant and microbial mechanisms that increase nutrient release from SOM may not be able to overcome this P limitation.
    Conclusions

    While current Earth System Models predict positive feedback responses of terrestrial ecosystems on C storage under eCO2, here we emphasize the importance of accounting for the widespread phenomenon of P-limitation in such responses.
    https://doi.org/10.1007/s11104-022-05763-0
  • Ecological Monographs
    2020

    Links between soil microbial communities, functioning, and plant nutrition under altered rainfall in Australian grassland

    Raul Ochoa-Hueso, Valentina Arca, Manuel Delgado-Baquerizo, Kelly Hamonts, Juan Piñeiro, Lilia Serrano Grijalva, Julien Shawyer, Sally Power
    The size, frequency, and timing of precipitation events are predicted to become more variable worldwide. Despite these predictions, the importance of changes in precipitation in driving multiple above- and belowground ecosystem attributes simultaneously remains largely underexplored. Here, we carried out 3 yr of rainfall manipulations at the DRI-Grass facility, located in a mesic grassland in eastern Australia. Treatments were implemented through automated water reapplication and included +50% and −50% amount, reduced frequency of events, and an extreme summer drought. We evaluated the spatiotemporal responses of multiple ecosystem attributes including microbial biomass, community composition and activity, soil nutrient content and availability, and plant nutritional status to altered rainfall regimes. We found that changing precipitation patterns resulted in multiple direct and indirect changes in microbial communities and soil and plant nutrient content. Main results included greater availability of soil macronutrients and reduced availability of micronutrients under drought, and taxon-specific changes in the composition of soil microbial communities in response to altered rainfall. Moreover, using structural equation modeling, we showed that, in summer 2015, plant macronutrient contents, a widely used ecological indicator of pasture quality, were simultaneously explained by greater soil nutrient availability and the structure of soil microbial communities, and significantly reduced by lower rainfall. Plant micronutrients were also reduced by lower rainfall and explained by changes in microbial attributes. Despite treatment effects on many of the soil, microbial, and plant variables analyzed across the 3 yr of study, many of these ecosystem attributes varied greatly across sampling events. This resulted in many significant interactions between the rainfall treatments and experimental duration, suggesting complex system-level responses to changing rainfall in our grassland, and a high natural buffering capacity of the ecosystem to varying rainfall conditions. Some interactions manifested as changes in the coefficient of variation of ecosystem attributes, particularly in response to changes in the timing of precipitation events and the extreme summer drought. Finally, we posit that a detailed understanding of plant–soil–microbial interactions, and the role of climate in modifying these linkages, will be key for adapting the sustainability of grasslands to a future that will be shaped by climate change.
    https://doi.org/10.1002/ecm.1424

Projects & collaborations

Projects

Additional Projects

SOFT- Steering Organic Farming Transition. Netherlands

2020–2022

How coupling of soil networks differs between conventional and organic farming.

Outreach