Amanda Dawson

Amanda Dawson
The Commonwealth Scientific and Industrial Research Organisation | CSIRO

PhD

About

27
Publications
6,797
Reads
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635
Citations
Introduction
Early career researcher studying the marine microplastics in Australia. My PhD examined the interaction between microplastics and key Antarctic species. Specifically the uptake, effects and fate of ingested microplastics in Antarctic krill.
Additional affiliations
February 2018 - September 2018
Queensland Government
Position
  • Fisheries Resource Officer
September 2012 - February 2014
Griffith University
Position
  • Research Assistant
Description
  • Research, both laboratory and desk based, and contributing to resulting publications. General maintenance of the research laboratory, sample prep and quality control. Maintained the facility Biosecurity records and compliance to regulatory standards
July 2008 - November 2010
Griffith University
Position
  • Statistics Tutor
Description
  • Tutor for a first year subject, my role encompassed introducing students to statistical analysis software (SPSS) and ensuring students understood the program usage and its limitations, marking assessment items, supervision of classes and exams.
Education
February 2014 - February 2018
Griffith University
Field of study
  • Environmental Science

Publications

Publications (27)
Article
Full-text available
Microplastics (MPs) have become ubiquitous in the marine environment, and are likely ingested by a broad cross-section of marine life. The extent to which marine organisms ingest MPs is uncertain due to limitations in analytical methods. Effective identification and analysis of ingested MPs is a precursor to understand their impact on marine organi...
Article
Full-text available
Seafood accounts for more than 17% of the global consumption of animal protein, with an excess of 335000 t consumed in Australia throughout 2019-2020. Recently, the presence of microplastics (MPs) within commercial seafood and the potential vectorisation of MPs to human consumers has become a significant concern for the public and the scientific co...
Article
Full-text available
Microplastics are ubiquitous contaminants in marine environments and organisms. Concerns about potential impacts on marine organisms are usually associated with uptake of microplastics, especially via ingestion. This study used environmentally relevant exposure conditions to investigate microplastic ingestion and depuration kinetics of the planktiv...
Article
Seafood contamination with, and human consumption of, microplastics (MPs) have recently been highlighted as an emerging concern for global food security. While there is evidence that commercial marine species are contaminated with MPs, it is still unknown if seafood can act as a vector for MP transfer to human consumers. Microplastics have been rep...
Article
Full-text available
Given current concerns regarding the extent of microplastic contamination in the environment, routine monitoring for microplastics in biological tissues is becoming increasingly common place. However, complex sample matrices, such as lipid-rich tissues, require multiple pre-treatment steps which may lead to increased sample processing time and cost...
Research
Full-text available
2018 Churchill Fellowship to The Dr Dorothea Sandars and Irene Lee Churchill Fellowship to access and redistribute world-class microplastic research to enhance Australia's research profile - UK Executive Summary This aim of this fellowship was to experience the technical capabilities of two of the leading microplastic research institutes in the...
Technical Report
Full-text available
The Queensland Ecological Risk Assessment Guideline (the Guideline) was released in March 2018 as part of the Queensland Sustainable Fisheries Strategy 2017–2027. This Guideline provides an overview of strategy being employed to develop Ecological Risk Assessments (ERAs) for Queensland’s fisheries. The Guideline describes a four-stage framework con...
Technical Report
Full-text available
The Queensland Ecological Risk Assessment Guideline (the Guideline) was released in March 2018 as part of the Queensland Sustainable Fisheries Strategy 2017–2027. This Guideline provides an overview of strategy being employed to develop Ecological Risk Assessments (ERAs) for Queensland’s fisheries. The Guideline describes a four-stage framework con...
Technical Report
Full-text available
The Queensland Ecological Risk Assessment Guideline (the Guideline) was released in March 2018 as part of the Queensland Sustainable Fisheries Strategy 2017–2027. This Guideline provides an overview of strategy being employed to develop Ecological Risk Assessments (ERAs) for Queensland’s fisheries. The Guideline describes a four-stage framework con...
Technical Report
Full-text available
The Queensland Ecological Risk Assessment Guideline (the Guideline) was released in March 2018 as part of the Queensland Sustainable Fisheries Strategy 2017–2027. This Guideline provides an overview of strategy being employed to develop Ecological Risk Assessments (ERAs) for Queensland’s fisheries. The Guideline describes a four-stage framework con...
Article
Full-text available
Microplastics (plastics <5 mm diameter) are at the forefront of current environmental pollution research, however, little is known about the degradation of microplastics through ingestion. Here, by exposing Antarctic krill (Euphausia superba) to microplastics under acute static renewal conditions, we present evidence of physical size alteration of...
Article
Full-text available
Persistent organic pollutant (POP) contamination of Polar Regions continues to present a major ecological challenge and an environmental stressor to local biota. Antarctic krill (Euphausia superba) are a keystone species of the Antarctic sea ice ecosystem. Krill have repeatedly been found to accumulate a diverse array of POPs and thereby serve as v...
Article
Full-text available
The discarding of plastic products has led to the ubiquitous occurrence of microplastic particles in the marine environment. The uptake and depuration kinetics of ingested microplastics for many marine species still remain unknown despite its importance for understanding bioaccumulation potential to higher trophic level consumers. In this study, An...
Article
Southern hemisphere humpback whales (Megaptera novaeangliae) rely on summer prey abundance of Antarctic krill (Euphausia superba) to fuel one of the longest-known mammalian migration on the planet. It is hypothesised that this species, already adapted to endure metabolic extremes, will be one of the first Antarctic consumers to show measurable phys...
Research
Full-text available
The Antarctic sea-ice ecosystem is one of the most productive ecosystems on the planet. The keystone species, Antarctic krill, supports an abundance of predators including Queensland’s iconic humpback whales. Krill biomass is threatened by a warming Polar climate, with impacts expected to resonate throughout the entire Antarctic sea-ice ecosystem....
Article
Full-text available
The periodic trend to cetacean mass stranding events in the Australian island state of Tasmania remains unexplained. This article introduces the hypothesis that domoic acid poisoning may be a causative agent in these events. The hypothesis arises from the previously evidenced role of aeolian dust as a vector of iron input to the Southern Ocean; the...
Article
The activities of glutathione-s-transferase (GST) and cytochrome P-450 1A1 (CYP1A1) enzymes were measured in freshly extracted epidermis of live-biopsied, migrating, southern hemisphere humpback whales (Megaptera novaeangliae). The two quantified enzyme activities did not correlate strongly with each other. Similarly, neither correlated strongly wi...

Questions

Questions (3)
Question
I want to measure length of microplastics fibres on a filter with imagej, I feel like i have seen a standard method but i can't remember where. Basically with curved or curly fibres how do you measure the length. Straight down the centre of the fibre or just longest length on the filter (see picture).
Question
I am currently digesting crustaceans with pro k and wanted to add a chitinase to the mix to remove all traces of the carapace. I'm not actually doing DNA work but i need to completely digest the samples 
Question
I euthanised krill in liquid nitrogen (currently stored in -80). Is there anyway to collect hemolymph now that they are already deceased/frozen?

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Projects

Projects (5)
Project
This project with investigate the extent of microplastic (MP) contamination in several high value and iconic Queensland seafood species. Specifically the background levels in organisms, toxic effects and pathways to human consumption.
Project
A core focus of SOPOPP's research is the evaluation of chemical exposure, toxicokinetics and toxicodynamics in key Polar biota. To date, work under this theme has led to the development of the first humpback whale cell-line; Characterization of uptake and depuration kinetics of POPs and microplastics in Antarctic krill; the discovery of previously uncharacterized detoxification enzymes in humpback whales and the observation of developmental and behavioural changes in Antarctic krill exposed to p,p'-DDE.