Browsing by Supervisor "Cary, S. Craig"
Now showing items 1-17 of 17
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The effects of ocean acidification on microbial nutrient cycling and productivity in coastal marine sediments
(The University of Waikato, 2022)Ocean Acidification (OA), commonly referred to as the “other CO₂ problem,” illustrates the current rise in atmospheric carbon dioxide (CO₂) levels, precipitated in large by human-related activity (e.g., fossil fuel combustion ... -
An investigation of microbial communities across two extreme geothermal gradients on Mt. Erebus, Victoria Land, Antarctica
(The University of Waikato, 2021)The geothermal fumaroles present on Mt. Erebus, Antarctica, are home to numerous unique and possibly endemic bacteria. The isolated nature of Mt. Erebus provides an opportunity to closely examine how geothermal physico-chemistry ... -
Sea ice dynamics drive benthic microbial communities in McMurdo Sound, Antarctica
(The University of Waikato, 2020)Globally, Earth’s warming climate is evidently driving sea ice variability in high latitude regions. In the Arctic, older and thicker multi-year sea ice is declining and transitioning into younger and more ephemeral ... -
Microbial abundance and diversity surrounding mummified seals in Miers Valley, Antarctica
(The University of Waikato, 2004)The presence of a number of mummified seal carcasses have been reported in the Dry Valleys of Antarctica. The location of seal carcasses were observed up to 240km in-land, and approximately 1500m above sea level. The ... -
Temporal dynamics of microbial communities in geothermal hotsprings of the Taupo Volcanic Zone
(The University of Waikato, 2017)Few studies of microbial biogeography address temporal variability in physicochemical conditions and communities in geothermal environments. Here we examine the temporal variability of 43 chemical analytes, temperature and ... -
Moisture Associated Microbial Communities in Antarctic Dry Valley Soils
(University of Waikato, 2017)Climate change is having a dramatic impact on the natural environment and is one of the most imminent and important issues of the 21st century. With limited vegetation and few large terrestrial organisms, Antarctica offers ... -
Contrasting microbial communities across anthropogenic pollution gradients: MV Rena shipwreck versus urban pressures
(University of Waikato, 2016)With the catastrophic environmental event that was the MV Rena ship wreck and oil spill in the Bay of Plenty area in 2011, a serendipitous opportunity to laterally explore a variety of impacts in the marine biosphere ... -
Geochemical, Spatial, and Temporal Drivers of Microbial Community Heterogeneity in the Meltwater Ponds of Antarctica
(University of Waikato, 2015)Antarctic meltwater ponds are an abundant, dynamic and sensitive yet poorly understood ecosystem. In this thesis, bacterial communities from surface waters, the water column and benthic zone in geochemically variable ... -
Elucidating the Origin of Tetrodotoxin in Pleurobranchaea maculata and Stylochoplana sp.
(University of Waikato, 2015)Tetrodotoxin (TTX) is an extremely potent neurotoxin that acts by selectively targeting voltage gated sodium channels blocking propagation of action potentials. Long believed to be present only in pufferfish, TTX has now ... -
Resolving Drivers of Microbial Community Structure in The Dry Valleys of Antarctica
(University of Waikato, 2014)Understanding the processes that underlie patterns of microbial distribution is fundamental to the field of microbial ecology, but extremely challenging given the complexity of natural systems. Antarctica’s ice-free regions ... -
Investigating Diet as the Source of Tetrodotoxin in the Grey Side-gilled Sea Slug, Pleurobranchaea maculata
(University of Waikato, 2014)Pleurobranchaea maculata (grey-side gilled sea slug) was discovered to contain the neurotoxin tetrodotoxin (TTX) in 2009 after a spate of dog poisoning cases on the beaches of Auckland, New Zealand. One of the great mysteries ... -
Soil chronosequences and bacterial communities of the Central Transantarctic Mountains, Antarctica
(University of Waikato, 2013)The Beardmore Glacier region of the Central Transantarctic Mountains (CTAM), approximately 600 km south of the McMurdo Dry Valleys (MDV), has been studied to a much lesser extent than the accessible MDV and other regions ... -
Spectroscopic Investigations of Oligopeptides from Aquatic Cyanobacteria: Characterisation of New Oligopeptides, Development of Microcystin Quantification Tools and Investigations into Microcystin Production
(University of Waikato, 2013)Cyanobacteria (blue-green algae) are a group of ancient prokaryotic organisms which have become synonymous with water quality deterioration. An array of compounds is produced by aquatic cyanobacteria, the largest group ... -
Use of genetic methods for determining patterns and processes during marine biological invasions
(University of Waikato, 2012)Invasive species are widely recognised as one of the major threats to marine biodiversity worldwide. With increasingly faster and more frequent transoceanic shipping, propagule pressure in the marine environment is likely ... -
Investigating the Physiological and Metabolic Requirements of the Tramway Ridge Microbial Community, Mt Erebus, Antarctica
(University of Waikato, 2012)Mount Erebus is the most active volcano on the Antarctic continent, and has the most geographically and physically isolated geothermal soil on Earth. It is exposed to some of the most extreme environmental conditions on ... -
Influences of soil properties on archaeal diversity and distribution in the McMurdo Dry Valleys, Antarctica
(University of Waikato, 2011)The Antarctic Dry Valleys are characterized by extremely low temperatures, arid conditions, high salinity and virtual absence of plants. Therefore, food webs of these microbially dominated soils are among the simplest on ... -
Characterization of the bacterioplankton communities in the melt-water ponds of Bratina Island, Victoria Land, Antarctica
(University of Waikato, 2011)Antarctic ecosystems (such as the ponds by Bratina Island, Antarctica) provide an excellent opportunity to examine organisms that can live in one of the most extreme and geochemically varied environments in the world. These ...
