❝
Malak is an ecosystem scientist with a PhD degree in Analytical chemistry from Florida State University. Her research aims to improve the understanding of carbon cycling in terrestrial and aquatic systems, the microbial-organic matter interactions that underlie it, and the controls upon it in dynamically changing systems. She uses a combination of modern and unique analytical molecular, geochemical and isotopic techniques to answer how, where and when organic matter formation and degradation takes place in different ecosystems. Malak’s research training focused on dissolved organic matter characterization during her PhD, soil organic matter characterization during my postdoctoral research, and recently has advanced to the systems-level integration of detailed organic matter characterization with insights from molecular microbial ecology and plant biology, with the direct goal of distilling the findings of these syntheses for improved predictive modeling of ecosystem and global change.Show Less
VOSviewer
Courses
- EMEnvironmental Metabolomics
- MBGCMicrobial Biogeochemistry and Global Change
Grants
- Canary Compounds: Early Indicators of Permafrost Thaw
Principal Investigator (PI)
2023
$300.0K
Active - Multi-Watershed Perturbation Response Traits Early Career Research Program
Principal Investigator (PI)
2023
$89.0K
Active - Women Fire Fighters Study: Evaluation of Exposures and Toxicity
Co-Investigator (COI)
2022
$1.5M
Active - A Volatile Environment: How Volatile Mediated Plant and Microbial Interactions Extend the Rhizosphere and Enhance Soil Carbon Storage
Co-Investigator (COI)
2022
$880.2K
Active - The Impact of Bacteriophage Therapy on Wound Infection Dynamics
Principal Investigator (PI)
2022
$218.2K
Active - Uncovering the Microbial Networks that Degrade Plant-Derived Phenolic Compounds and their Role in Peatland Soil Carbon Sequestration: Revisiting the Enzyme Latch Hypothesis
Principal Investigator (PI)
2022
$181.9K
Active - Gatekeepers of Arctic Carbon Loss: Landscape-Scale Metabolites-to-Ecosystems Profiling to Mechanistically Map Climate Feedbacks
Principal Investigator (PI)
2022
$167.4K
Active - EFRI ELiS: Bioweathering Dynamics and Ecophysiology of Microbially Catalyzed Soil Genesis of Mars Regolith
Principal Investigator (PI)
2022
$163.8K
Active - Towards Virus Therapy of a Climate-Critical Ecosystem
Principal Investigator (PI)
2022
$145.0K
Active - From Viromes to Virocells: Dissecting Viral Roles in Terrestrial Microbiomes and Nutrient Cycling
Principal Investigator (PI)
2022
$124.4K
Active
News
- Life on LEO: Plants to be Added to the Landscape Evolution Observatory at Biosphere 2
2021
- $3M Grant Helps Students Bridge Sciences to Solve the World's Biggest Problems
2020
Publications (103)
Recent
- Dynamics of organic matter molecular composition under aerobic decomposition and their response to the nitrogen addition in grassland soils
2022
- Organic matter transformations are disconnected between surface water and the hyporheic zone
2022
- Elevated temperatures drive abiotic and biotic degradation of organic matter in a peat bog under oxic conditions
2022
- Mapping substrate use across a permafrost thaw gradient
2022
- The influence of soil development on the depth distribution and structure of soil microbial communities
2022
- Plant organic matter inputs exert a strong control on soil organic matter decomposition in a thawing permafrost peatland
2022
- Using Macro- and Microscale Preservation in Vertebrate Fossils as Predictors for Molecular Preservation in Fluvial Environments
2022
- Natural organic matter composition and nanomaterial surface coating determine the nature of platinum nanomaterial-natural organic matter corona
2022
- Capturing the microbial volatilome: an oft overlooked 'ome'
2022
- Temperature and moisture alter organic matter composition across soil fractions
2022
- Elucidating Drought-Tolerance Mechanisms in Plant Roots through H NMR Metabolomics in Parallel with MALDI-MS, and NanoSIMS Imaging Techniques
2022
- Effects of Microbial-Mineral Interactions on Organic Carbon Stabilization in a Ponderosa Pine Root Zone: A Micro-Scale Approach
2022
- Coupling plant litter quantity to a novel metric for litter quality explains C storage changes in a thawing permafrost peatland
2022
- Molecular characterization of dissolved organic nitrogen and phosphorus in agricultural runoff and surface waters
2022
- Susceptibility of new soil organic carbon to mineralization during dry-wet cycling in soils from contrasting ends of a precipitation gradient
2022
- Decrypting bacterial polyphenol metabolism in an anoxic wetland soil
2021
- Soil metabolome response to whole-ecosystem warming at the Spruce and Peatland Responses under Changing Environments experiment
2021
- Microbial Communities Influence Soil Dissolved Organic Carbon Concentration by Altering Metabolite Composition
2021
- Interactions between microbial diversity and substrate chemistry determine the fate of carbon in soil
2021
- The importance of nutrients for microbial priming in a bog rhizosphere
2021
- Spatial access and resource limitations control carbon mineralization in soils
2021
- Green infrastructure influences soil health: Biological divergence one year after installation
2021
- The volatilome: a vital piece of the complete soil metabolome
2021
- Ecosystem fluxes during drought and recovery in an experimental forest
2021
- Correction to Simple Plant and Microbial Exudates Destabilize Mineral-Associated Organic Matter via Multiple Pathways
2021
- Persistence of microbially-processed carbon in soils from contrasting ends of a precipitation gradient
2021
- -Sequential abiotic-biotic processes drive organic carbon transformation in peat bogs
2021
- Functional capacities of microbial communities to carry out large scale geochemical processes are maintained during ex situ anaerobic incubation
2021
- Root Carbon Interaction with Soil Minerals Is Dynamic, Leaving a Legacy of Microbially Derived Residues
2021
- Low soil phosphorus availability triggers maize growth stage specific rhizosphere processes leading to mineralization of organic P
2021
- Development of Energetic and Enzymatic Limitations on Microbial Carbon Cycling in Upland Soils
2021
- Differential effects of redox conditions on the decomposition of litter and soil organic matter
2021
- Simple Plant and Microbial Exudates Destabilize Mineral-Associated Organic Matter via Multiple Pathways
2021
- Radiocarbon Analyses Quantify Peat Carbon Losses With Increasing Temperature in a Whole Ecosystem Warming Experiment
2021
- Effect of Nanoparticle Size and Natural Organic Matter Composition on the Bioavailability of Polyvinylpyrrolidone-Coated Platinum Nanoparticles to a Model Freshwater Invertebrate
2021
- Soil Organic Matter Characterization by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FTICR MS): A Critical Review of Sample Preparation, Analysis, and Data Interpretation
2021
- Coupled Biotic-Abiotic Processes Control Biogeochemical Cycling of Dissolved Organic Matter in the Columbia River Hyporheic Zone
2021
- Using metacommunity ecology to understand environmental metabolomes
2020
- Organic amendments change soil organic C structure and microbial community but not total organic matter on sub-decadal scales
2020
- Controls on Soil Organic Matter Degradation and Subsequent Greenhouse Gas Emissions Across a Permafrost Thaw Gradient in Northern Sweden
2020
- Strong mineralogic control of soil organic matter composition in response to nutrient addition across diverse grassland sites
2020
- he IsoGenie database: an interdisciplinary data management solution for ecosystems biology and environmental research
2020
- Soil properties and biochemical composition of ground-dwelling bee nests in agricultural settings
2020
- Long-Term Warming Decreases Redox Capacity of Soil Organic Matter
2020
- Dynamic changes in dissolved organic matter composition in a Mountain Lake under ice cover and relationships to changes in nutrient cycling and phytoplankton community composition
2020
- Compositional changes of dissolved organic carbon during its dynamic desorption from hyporheic zone sediments
2019
- Spatial gradients in the characteristics of soil-carbon fractions are associated with abiotic features but not microbial communities
2019
- Shifting mineral and redox controls on carbon cycling in seasonally flooded mineral soils
2019
- Reduction-Oxidation Potential and Dissolved Organic Matter Composition in Northern Peat Soil: Interactive Controls of Water Table Position and Plant Functional Groups
2019
- Online supercritical fluid extraction mass spectrometry (SFE-LC-FTMS) for sensitive characterization of soil organic matter
2019
- Lipid Mini-On: Mining and ontology tool for enrichment analysis of lipidomic data
2019
- Root-driven weathering impacts on mineral-organic associations in deep soils over pedogenic time scales
2019
- Does dissolved organic matter or solid peat fuel anaerobic respiration in peatlands?
2019
- Evaluation of Multifeature Libraries for Providing Evidence for the Presence of Small Molecules in Synthetic Blinded Samples
2019
- Do shifts in vegetation affect dissolved organic carbon quality in a coastal marsh along the Hudson River Estuary, NY
2019
- Advancing Standards-Free Methods for the Identification of Small Molecules in Complex Samples
2019
- Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures
2019
- Untargeted metabolomic profiling of reveals novel antimicrobial metabolites
2019
- Atmo-ecometabolomics: a novel atmospheric particle chemical characterization methodology for ecological research
2019
- Hyporheic Zone Microbiome Assembly Is Linked to Dynamic Water Mixing Patterns in Snowmelt-Dominated Headwater Catchments
2019
- Small differences in ombrotrophy control regional-scale variation in methane cycling among Sphagnum-dominated peatlands
2018
- Vertical Stratification of Peat Pore Water Dissolved Organic Matter Composition in a Peat Bog in Northern Minnesota
2018
- Multi 'omics comparison reveals metabolome biochemistry, not microbiome composition or gene expression, corresponds to elevated biogeochemical function in the hyporheic zone
2018
- WHONDRS Surface Water Sampling for Metabolite Biogeography. Worldwide Hydrobiogeochemistry Observation Network for Dynamic River Systems (WHONDRS).
2018
- Characterization of Natural Organic Matter in Low-Carbon Sediments.
2018
- Elevated [CO2] changes soil organic matter composition and substrate diversity in an arid ecosystem
2018
- A Customizable Flow Injection System for Automated, High Throughput, and Time Sensitive Ion Mobility Spectrometry and Mass Spectrometry Measurements
2018
- Advanced Molecular Techniques Provide New Rigorous Tools for Characterizing Organic Matter Quality in Complex Systems
2018
- Publisher Correction: Influences of organic carbon speciation on hyporheic corridor biogeochemistry and microbial ecology
2018
- Community proteogenomics reveals the systemic impact of phosphorus availability on microbial functions in tropical soil
2018
- The Path From Litter to Soil: Insights Into Soil C Cycling From Long-Term Input Manipulation and High-Resolution Mass Spectrometry
2018
- Spatial-temporal variations of dissolved organic nitrogen molecular composition in agricultural runoff water
2018
- Discerning Microbially Mediated Processes During Redox Transitions in Flooded Soils Using Carbon and Energy Balances
2018
- Redox fluctuations control the coupled cycling of iron and carbon in tropical forest soils
2018
- Influences of organic carbon speciation on hyporheic corridor biogeochemistry and microbial ecology
2018
- Dispersal limitation and thermodynamic constraints govern spatial structure of permafrost microbial communities
2018
- Thermodynamically controlled preservation of organic carbon in floodplains
2017
- Shifts in pore connectivity from precipitation versus groundwater rewetting increases soil carbon loss after drought
2017
- Sequential extraction protocol for organic matter from soils and sediments using high resolution mass spectrometry
2017
- Unambiguous identification and discovery of bacterial siderophores by direct injection 21 Tesla Fourier transform ion cyclotron resonance mass spectrometry
2017
- Abundant carbon substrates drive extremely high sulfate reduction rates and methane fluxes in Prairie Pothole Wetlands
2017
- Differences in soluble organic carbon chemistry in pore waters sampled from different pore size domains
2017
- Formularity: Software for Automated Formula Assignment of Natural and Other Organic Matter from Ultrahigh-Resolution Mass Spectra
2017
- Diurnal cycling of rhizosphere bacterial communities is associated with shifts in carbon metabolism
2017
- Carbon Inputs From Riparian Vegetation Limit Oxidation of Physically Bound Organic Carbon Via Biochemical and Thermodynamic Processes
2017
- Groundwater-surface water mixing shifts ecological assembly processes and stimulates organic carbon turnover
2016
- Aligning the Measurement of Microbial Diversity with Macroecological Theory
2016
- Stability of peatland carbon to rising temperatures
2016
- Elemental composition and optical properties reveal changes in dissolved organic matter along a permafrost thaw chronosequence in a subarctic peatland
2016
- Utilization of PARAFAC-Modeled Excitation-Emission Matrix (EEM) Fluorescence Spectroscopy to Identify Biogeochemical Processing of Dissolved Organic Matter in a Northern Peatland
2015
- Advanced solvent based methods for molecular characterization of soil organic matter by high-resolution mass spectrometry
2015
- The relative importance of methanogenesis in the decomposition of organic matter in northern peatlands
2015
- CO2 and CH4 isotope compositions and production pathways in a tropical peatland
2015
- Microbial community stratification linked to utilization of carbohydrates and phosphorus limitation in a boreal peatland at Marcell Experimental Forest, Minnesota, USA
2014
- Changes in peat chemistry associated with permafrost thaw increase greenhouse gas production
2014
- Microbial Metabolic Potential for Carbon Degradation and Nutrient (Nitrogen and Phosphorus) Acquisition in an Ombrotrophic Peatland
2014
- Organic matter transformation in the peat column at Marcell Experimental Forest: Humification and vertical stratification
2014
- Surface production fuels deep heterotrophic respiration in northern peatlands
2013
- Partitioning pathways of CO2 production in peatlands with stable carbon isotopes
2013
- Investigating dissolved organic matter decomposition in northern peatlands using complimentary analytical techniques
2013
- Comparison of dialysis and solid-phase extraction for isolation and concentration of dissolved organic matter prior to Fourier transform ion cyclotron resonance mass spectrometry
2012
- Microbial community structure and activity linked to contrasting biogeochemical gradients in bog and fen environments of the Glacial Lake Agassiz Peatland
2012
- Influence of acidification on the optical properties and molecular composition of dissolved organic matter
2011