Sarah Stephenson

ORCID: 0000-0002-6804-3125
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About
Contact & Profiles
Research Areas
  • Microbial Community Ecology and Physiology
  • Environmental DNA in Biodiversity Studies
  • Metabolomics and Mass Spectrometry Studies
  • Protist diversity and phylogeny
  • Environmental Toxicology and Ecotoxicology
  • Genomics and Phylogenetic Studies
  • Methane Hydrates and Related Phenomena
  • Hydrology and Watershed Management Studies
  • Coastal wetland ecosystem dynamics
  • Aquaculture disease management and microbiota
  • Coral and Marine Ecosystems Studies
  • Radioactive element chemistry and processing
  • Marine Biology and Ecology Research
  • Soil and Water Nutrient Dynamics
  • Fish Ecology and Management Studies
  • Electrohydrodynamics and Fluid Dynamics
  • Marine Biology and Environmental Chemistry
  • Marine and fisheries research
  • Monoclonal and Polyclonal Antibodies Research
  • Drug Solubulity and Delivery Systems
  • Data Analysis with R
  • Arctic and Antarctic ice dynamics
  • Radioactive contamination and transfer
  • Identification and Quantification in Food
  • Chromosomal and Genetic Variations

CSIRO Oceans and Atmosphere
2015-2024

ACT Government
2021

Commonwealth Scientific and Industrial Research Organisation
2013-2021

Covance (United States)
2014

Macquarie University
2012

University of Alberta
2009

Agricultural Research Service
2007

University of Guelph
2006

New Frontier
1998

ABSTRACT Aim To assess evidence for geographical and environmental range expansion through polyploidy in wild potatoes ( Solanum sect. Petota ). There are diploids, triploids, tetraploids, pentaploids hexaploids this group. Location Wild occur from the south‐western USA (Utah Colorado), throughout tropical highlands of Mexico, Central America Andes, to Argentina, Chile Uruguay. Methods We compiled 5447 reports ploidy determination, covering 185 187 species, which 702 determinations presented...

10.1111/j.1466-8238.2007.00308.x article EN Global Ecology and Biogeography 2007-03-21

Abstract When compared to surface ecosystems, groundwater sampling has unique constraints, including limited access ecosystems through wells. In order monitor groundwater, a detailed understanding of biota and what biological wells truly reflects, is paramount. This study aims address this uncertainty, comparing the composition in prior after purging, with samples collected purging reflecting potentially artificial environment representing surrounding aquifer. uses DNA community profiling...

10.1038/srep40702 article EN cc-by Scientific Reports 2017-01-19

Advances in high-throughput sequencing (HTS) are revolutionizing monitoring marine environments by enabling rapid, accurate and holistic detection of species within complex biological samples. Research institutions worldwide increasingly employ HTS methods for biodiversity assessments. However, variance laboratory procedures, analytical workflows bioinformatic pipelines impede the transferability comparability results across research groups. An international experiment was conducted to...

10.1111/1755-0998.13485 article EN Molecular Ecology Resources 2021-08-16

Summary Located in the Northern Territory of Australia, Ranger uranium mine is directly adjacent to UNESCO World Heritage listed Kakadu National Park, with rehabilitation targets needed ensure site can be incorporated into park following mine's closure 2026. This study aimed understand impact concentration on microbial communities, order identify and describe potential breakpoints ecosystem services. first report situ deployment uranium‐spiked sediments along a gradient (0–4000 mg U kg −1 ),...

10.1111/1462-2920.13839 article EN Environmental Microbiology 2017-06-20

Comparative nonclinical studies were conducted with the proposed biosimilar PF-05280586 and rituximab-EU (MabThera®). In side-by-side analyses, peptide maps complement-dependent cytotoxicity assay results similar. Sexually-mature cynomolgus monkeys administered or as a single dose of 0, 2, 10, 20 mg/kg on day 1 observed for 92 days (single-dose study) 5 weekly injections 0 necropsied 30, after 5th dose, 121 (repeat-dose study). The pharmacokinetic pharmacodynamic profiles both molecules...

10.1177/0192623313520351 article EN Toxicologic Pathology 2014-03-06

Traditional environmental monitoring techniques are well suited to resolving acute exposure effects but lack resolution in determining subtle shifts ecosystem functions resulting from chronic exposure(s). Surveillance with sensitive omics-based technologies could bridge this gap but, date, most studies have focused on previously degraded environments, identifying key metabolic differences anthropogenic perturbations. Here, we apply approaches pristine environments establish blueprints of...

10.1016/j.scitotenv.2021.146526 article EN cc-by The Science of The Total Environment 2021-03-19

Vertical zonation within estuarine ecosystems can strongly influence microbial diversity and function by regulating competition, predation, environmental stability. The degree to which communities exhibit horizontal patterns through an estuary has received comparatively less attention. Here, we take a multi-omics ecosurveillance approach study gradients created the transition between dominant vegetation types along near pristine tropical river system (Wenlock River, Far North Queensland,...

10.1016/j.scitotenv.2021.151175 article EN cc-by-nc-nd The Science of The Total Environment 2021-10-25

Altricial young face two significant energetic challenges in the nest: thermoregulation and stress caused by ectoparasites. Ectoparasites feed on blood of nestlings serve as vectors for bacterial viral infections. Many bird species line their nests with feathers, which insulate nest reduce heat loss from chicks. Feathers may also affect ectoparasite numbers serving a parasite barrier. We tested possible roles feathers effects parasites growth survival Tree Swallow (Tachycineta bicolor)...

10.1525/cond.2009.090074 article EN Ornithological Applications 2009-08-01

The diversity of groundwater mycobiota remains relatively unknown and unchartered. As a first description the fungal in Australian aquifers we explored distribution, abundance assemblages samples from an alluvial (Bylong) two sandy (Tomago; Botany Sands) unconfined coastal catchments NSW, Australia. A total 89 strains were isolated with 54 Eumycotan taxa identified. Sands aquifer, history industrial chlorinated hydrocarbon contamination along hydraulic gradient, yielded highest richness 23...

10.1080/01490451.2011.559306 article EN Geomicrobiology Journal 2012-02-08

Abstract Groundwater biota are particularly sensitive to environmental perturbations such as groundwater contamination. The diversity of prokaryotic and eukaryotic has been examined along a gradient chlorinated hydrocarbon (CHC) contamination in the Botany Sands, an urban coastal sand-bed aquifer (Sydney, Australia). Molecular techniques were used analyze richness composition prokaryote eukaryote assemblages using 16S 18S rDNA, respectively. Taxon did not change significantly for either...

10.1080/01490451.2012.746408 article EN Geomicrobiology Journal 2012-12-13

The Southeast Asia and Melanesia region has extensive nickel (Ni)-rich lateritic regoliths formed from the tropical weathering of ultramafic rocks. As global demand for Ni continues to rise, these are increasingly being exploited their economic benefit. Mining contributes enrichment coastal sediments in trace metals, especially Ni. present study used high-throughput sequencing (metabarcoding) determine changes eukaryote (18s v7 recombinant DNA [rDNA] diatom-specific subregion 18s v4 rDNA)...

10.1002/etc.5039 article EN Environmental Toxicology and Chemistry 2021-03-10

Coastal blue carbon ecosystems (BCE) support nearshore food webs and provide habitat for many commercially important fish crustacean species. However, the complex links between catchment vegetation food-base of estuarine systems are difficult to disern. We employed a multi-biomarker approach (stable isotope ratios - δ13C δ15N, fatty acid trophic markers FATMs metabolomics central metabolism metabolites) test sources available crabs occurring within river near-pristine eastern coastline Gulf...

10.1016/j.scitotenv.2023.163162 article EN cc-by-nc The Science of The Total Environment 2023-04-07

An experimental investigation into the use of a hydrophobic matrix to control release highly water soluble drug was undertaken. Matrices consisting hydrogenated vegetable oil and calcium sulfate with 4% loading showed sustained-release profile up 24 hr. The mechanism from such matrices seemed obey both root time kinetics first-order behavior. Investigations that effect geometry had significant on rate.

10.1081/ddc-100100330 article EN Drug Development and Industrial Pharmacy 2000-01-01

Oil spills pose a significant threat to marine biodiversity. Crude oil can partition into sediments where it may be persistent, placing benthic species such as decapods at particular risk of exposure. Transcriptomic and histological tools are often used investigate the effects hydrocarbon exposure on organisms following spill events, allowing for identification metabolic pathways impacted by However, there is limited information available decapod crustaceans, many which carry economic value....

10.1002/etc.5413 article EN cc-by-nc Environmental Toxicology and Chemistry 2022-07-11

Environmental DNA (eDNA) is released by organisms into their surroundings, enabling non‐invasive species detection and biodiversity assessments without the need for direct observation. However, collection poses challenges due to generally low abundance of eDNA presence degradation agents, including enzymes, UV radiation, microorganisms, rendering samples unstable. Active filtration, which frequently used capture in water, can be time‐consuming cumbersome field conditions. Herein, a...

10.1002/smsc.202400432 article EN cc-by Small Science 2024-10-01

Forecasted climate-change models predict that much of northern Australia’s coastal habitats will be in retreat because saltwater intrusion (SWI) from sea-level rise. A region primary concern is the nutrient-rich and biodiverse floodplains world heritage-listed Kakadu National Park (KNP). To understand implications SWI, we need fundamental baseline information for floodplain biota South Alligator River, KNP, Australia, informative data on how increased prolonged exposure to salt likely shape...

10.1071/mf18067 article EN Marine and Freshwater Research 2018-01-01
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