A5010337958- Microbial Community Ecology and Physiology
- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- Marine and coastal ecosystems
- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Isotope Analysis in Ecology
- Advanced Sensor and Energy Harvesting Materials
- Gas Sensing Nanomaterials and Sensors
- Metabolomics and Mass Spectrometry Studies
- Petroleum Processing and Analysis
- Wastewater Treatment and Nitrogen Removal
- Atmospheric and Environmental Gas Dynamics
- Graphene research and applications
- Analytical Chemistry and Sensors
- Advanced Chemical Sensor Technologies
- Marine Biology and Ecology Research
- Marine Sponges and Natural Products
- Enhanced Oil Recovery Techniques
- Evolution and Paleontology Studies
- Analytical chemistry methods development
- Analytical Chemistry and Chromatography
- Microbial Natural Products and Biosynthesis
- Protist diversity and phylogeny
- Geological Studies and Exploration
Silicon Austria Labs (Austria)
2021-2025
University of Plymouth
2014-2024
University of Bristol
2018-2023
Instituto Valenciano de la Edificación
2023
Royal Netherlands Institute for Sea Research
2012-2019
Utrecht University
2019
Curtin University
2015-2017
Geoscience Australia
2016
Abstract In response to rising CO 2 concentrations and increasing global sea surface temperatures, oxygen minimum zones (OMZ), or “dead zones”, are expected expand. OMZs fueled by high primary productivity, resulting in enhanced biological demand at depth, subsequent depletion, attenuation of remineralization. This results the deposition organic carbon‐rich sediments. Carbon drawdown is estimated biogeochemical models; however, a major process ignored: carbon fixation mid‐ lower water...
Abstract The early Eocene (c. 56 - 48 million years ago) experienced some of the highest global temperatures in Earth’s history since Mesozoic, with no polar ice. Reports contradictory ice-rafted erratics and cold water glendonites higher latitudes have been largely dismissed due to ambiguity significance these purported cold-climate indicators. Here we apply clumped isotope paleothermometry a traditionally qualitative abiotic proxy, glendonite calcite, generate quantitative temperature...
Anaerobic ammonium oxidation (anammox) is a major process of bioavailable nitrogen removal from marine systems. Previously, bacteriohopanetetrol (BHT) isomer, with unknown stereochemistry, eluting later than BHT when examined by high performance liquid chromatography (HPLC), was detected in ‘Ca. Scalindua profunda’ and proposed as biomarker for anammox paleo-environments. However, the utility this isomer an hindered fact that four other, non-anammox, bacteria are also known to produce...
With the recent development of LED lighting systems for plant cultivation, use vertical farming under controlled conditions is attracting increased attention. This study investigated impact a number light spectra (red, blue, green and white) on growth, essential oil content lemon balm (Melissa officinalis), herb pharmaceutical species used across world. White red-rich gave best outputs in terms growth yield. For blue-rich spectra, yield was lower despite having significant photosynthesis...
RATIONALE As a by‐product of oil sands extraction, large volumes process water (OSPW) are generated, which contaminated with range water‐soluble organic compounds. The acids thought to be derived from hydrocarbons via natural biodegradation pathways such as α‐ and β‐oxidation alkyl substituents, could produce mono‐ diacids, for example. However, while several monoacids (‘O 2 ’ species) have been identified, the presence diacids (i.e. 'O 4 ' has only deduced results obtained Fourier transform...
Humidity is one of the most relevant physical parameters to sense and control for a wide range commercial industrial applications. Consequently, there continuing demand development innovative sustainable humidity sensor solutions. Here, characterization fully additively manufactured, highly sensitive, resistive Chitosan-based sensors on flexible thermoplastic polyurethane (TPU) foil, as well glass carrier substrate are presented. The unite aspects sustainability high performance in broad...
RATIONALE The identification of key acid metabolites ('signature' metabolites) has allowed significant improvements to be made in our understanding the biodegradation petroleum hydrocarbons, reservoir and contaminated natural systems, such as aquifers seawater. On this basis, anaerobic oxidation is now more widely accepted one viable mechanism, for instance. However, complex mixtures from degradation challenging would benefit use highly resolving analytical methods. METHODS Comprehensive...
Abstract The continuous growth of the electronics industry requires a reevaluation traditional materials and manufacturing techniques to address rising issue electronic waste (e‐waste). Environmental monitoring devices, which provide valuable insights into factors such as humidity temperature, currently rely on non‐degradable substrates toxic metals, significantly contributing plastic waste. Furthermore, conventional like screen printing, while effective, are limited in their ability produce...
Abstract. Thaumarchaeota are amongst the most abundant microorganisms in aquatic environments, however, their metabolism marine sediments is still debated. Labeling studies have previously been undertaken, but focused on complex organic carbon substrates which not yet shown to take up. In this study, we investigated activity of by supplying different 13C-labeled be incorporated into archaeal cells water incubations and/or enrichment cultures. We determined incorporation 13C-label from...
Abstract Glycerol dibiphytanyl glycerol tetraether ( GDGT ) lipids are part of the cellular membranes T haumarchaeota, an archaeal phylum composed aerobic ammonia oxidizers, and used in paleotemperature proxy TEX 86 . s live cells possess polar head groups called intact IPL ‐ s). Their transformation to core CL by cleavage group was assumed proceed rapidly after cell death, but it has been suggested that some these can, just like s, be preserved over geological timescales. Here, we examined...
RATIONALE Characterising complex mixtures of organic compounds in polar fractions heavy petroleum is challenging, but important for pollution studies and exploration production geochemistry. Oil sands process‐affected water (OSPW) stored large tailings ponds by Canadian oil industries contains such mixtures. METHODS A OSPW fraction was obtained silver ion solid‐phase extraction with methanol elution. This examined numerous methods, including electrospray ionisation (ESI) Fourier transform...
Oil industry produced waters, such as the oils sands process-affected waters (OSPW) of Alberta, Canada, represent a challenge in terms risk assessment and reclamation due to their extreme complexity, particularly organic chemical constituents, including naphthenic acids (NA). The identification numerous NA single samples has raised promise for use distributions profiling OSPW. However, monitoring success containment is still difficult, lack knowledge homogeneity (or otherwise) OSPW...
Beggiatoaceae, giant sulphur-oxidizing bacteria, are well known to occur in cold and temperate waters, as hydrothermal vents, where they form dense mats on the floor. However, have never been described tropical marine mangroves. Here, we describe two new species of benthic Beggiatoaceae colonizing a mangrove adjacent roots. We combined phylogenetic lipid analysis with electron microscopy order these organisms. Furthermore, oxygen sulphide measurements ex situ were performed mesocosm...
Abstract The Cretaceous-Paleogene (K-Pg) boundary marks one of the five major mass extinctions Phanerozoic. ways in which climate system responded to a bolide impact and extensive volcanism at this time over different scales are highly debated. We used distribution branched tetraether lipids (brGDGT) from fossil peats two sites Saskatchewan, Canada (paleolatitude ~55°N), generate high-resolution (millennial) record mean annual air temperature (MAAT) spanning last ~4 k.y. Cretaceous first ~30...
Many cold-water sponges harbour microorganisms of which the role in sponge host remains enigmatic. Here, we show a transfer fixed inorganic carbon by sponge-associated microbes to its host, coral encrusting Hymedesmia (Stylopus) coriacea. Sponge were collected at approx. 100 m depth and incubated for 1.5–2.5 days with 13C labelled dissolved (DIC) as tracer. Total DIC fixation rates ranged from 0.03–0.11 mmol C × Csponge d−1. 13C-tracer was recovered bacterial-specific (i.e. short branched)...
Alongside the Chicxulub meteorite impact, Deccan volcanism is considered a primary trigger for Cretaceous–Paleogene (K–Pg) mass extinction. Models suggest that volcanic outgassing of carbon and sulfur—potent environmental stressors—drove global temperature change, but relative timing, duration, magnitude such change remains uncertain. Here, we use organic paleothermometer MBT′ 5me carbon-isotope composition two K–Pg-spanning lignites from western Unites States, to test models volcanogenic...