Browsing by Supervisor "Hogg, Ian D."
Now showing items 1-20 of 28
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An assessment of endocrine disrupting potential of a New Zealand pulp and paper mill effluent using rainbow trout Oncorhynchus mykiss and mosquitofish Gambusia affinis
(The University of Waikato, 2001)I examined the effects of a modern mixed thermo-mechanical pulp/bleached kraft (TMP/BK) mill effluent on potential reproductive-endocrine impacts on two fish species, rainbow trout and mosquitofish using a combined approach ... -
Assessing dispersal among habitats for three New Zealand aquatic insects using mitochondrial DNA (COI) sequences
(University of Waikato, 2016)Dispersal of aquatic insects is a key process allowing colonization of new habitat and linking existing populations among habitats. Studying the dispersal of freshwater taxa directly is logistically challenging and assessments ... -
Assessing mitochondrial DNA (CO1) barcodes for measuring diversity of Schizaphis spp. and abundance of Aploneura lentisci
(University of Waikato, 2015)We examined the diversity of mitochondrial DNA (CO1) sequences in the New Zealand native aphids with a particular focus on the genus Schizaphis (syn. Euschizaphis). Previously, the genus was thought to consist of two ... -
Assessing New Zealand's spider (Araneae) fauna, using DNA barcoding
(The University of Waikato, 2018)The ability to accurately monitor biological diversity is the foundation to most ecological research. However, the morphological identification of spiders, as with many arthropod taxa, is often complicated by phenotypic ... -
Assessing the Diversity of Antarctic and New Zealand Arthropods through DNA Barcoding
(University of Waikato, 2016)Diversity is the foundation of all biological and ecological studies. Globally however, biodiversity is under threat from the varied and cumulative impacts of humans on the environment. It is thus necessary to continually ... -
Assessing the Diversity of New Zealand's Freshwater Copepods (Crustacea:Copepoda) using Mitochondrial DNA (COI) Sequences
(University of Waikato, 2014)The diversity of New Zealand’s freshwater copepods has been largely understudied. In order to enhance our understanding of this taxon, I used the mitochondrial cytochrome c oxidase subunit one (COI) gene sequences to examine ... -
Assessing the use of molecular techniques to determine terrestrial invertebrate diversity in New Zealand mangroves and detection of blue ducks in New Zealand streams
(University of Waikato, 2015)Biodiversity monitoring requires reliable methods for species detection and identification. Here, I examine the use of molecular approaches, including mitochondrial DNA sequencing (barcoding) and environmental DNA (eDNA) ... -
Cross-boundary detrital subsidies: Detrital export and effects on receiving intertidal soft-sediment ecosystems
(University of Waikato, 2017)Ecosystems are often connected by the transfer of resource ‘subsidies’ across their boundaries. In temperate estuaries, marine macrophyte leaf litter represents an obvious and visible detrital subsidy to nearby intertidal ... -
Distribution and Dispersal of Aquatic Invertebrates in the Waitomo Stream
(University of Waikato, 2000)A survey of the distribution and dispersal of aquatic macro invertebrates was carried out in the Waitomo caves catchment, located South of Hamilton, New Zealand. Eight sites were selected along the Waitomo stream. The sites ... -
Distribution of nematodes in pasture soil across seasons and in combination with plant species and fertiliser application
(The University of Waikato, 2018)The intensification of pastoral land use has increased with the use of fertilisers and the selection of highly productive pasture plant species to increase pasture production. When choosing a ryegrass cultivar infected ... -
Diversity of New Zealand Deep-sea Amphipoda
(University of Waikato, 2012)Biodiversity and the ecological and evolutionary processes which influence faunal distributions are poorly understood in deep-sea habitats. This thesis assesses diversity of deep-sea amphipod crustaceans at three taxonomic ... -
Genetic diversity and phylogeography of New Zealand and Antarctic arthropods
(The University of Waikato, 2005)Historical climatic and geological changes and ecological factors ( e.g. population size, dispersal abilities) are conducive to shaping genetic differentiation among natural populations. This thesis examines these issues ... -
Genetic diversity and potential responses of New Zealand Rotifera and Antarctic Collembola to environmental changes
(University of Waikato, 2015)Environmental changes can impact the diversity and abundance of biotic communities as well as their dispersal among geographic regions. The availability of sensitive molecular techniques has enabled assessments of diversity ... -
The genetic structure of New Zealand's coastal benthos: using the estuarine clam Austrovenus stutchburyi, to determine rates of gene flow and population connectivity
(University of Waikato, 2011)For many benthic marine taxa, dispersal over large distances is dependent on a pelagic larval phase. It is through the dispersal process that benthic taxa can found new populations, colonise disturbed or degraded habitats ... -
Impacts of the Pliocene and Pleistocene glaciations on genetic diversity among New Zealand and Antarctic Arthropods
(University of Waikato, 2013)Geological events such as glaciation and crustal uplift can impact on species' distributions and genetic diversity through the formation of dispersal barriers and fragmentation of habitat. This thesis investigates the ... -
Marine wood borers in New Zealand: an interdisciplinary study of their origins, impacts and management
(University of Waikato, 2014)Non-indigenous marine species are a major concern worldwide. For some species, insufficient historical and biogeographical data can leave their origin and patterns of dispersal difficult to determine. Among such species ... -
Phylogeogrpahy and genetic diversity of terrestrial arthropods from the Ross Dependency, Antarctica
(The University of Waikato, 2010)The pattern of genetic diversity in many species observed today can be traced back to historic ecological events that influenced the distribution of species not only on a global but also a local scale. For example, historical ... -
The physical and biological function of wood in New Zealand's forested stream ecosystems
(University of Waikato, 2011)Since the arrival of humans approximately 1000 years before present (B. P.), New Zealand has lost approximately 80% of its forest cover and along with it, the contribution of wood to our aquatic ecosystems. The aim of this ... -
Population genetic structure of Antarctic springtails (Collembola) and New Zealand damselflies (Odonata)
(The University of Waikato, 2006)Since Darwin (Darwin, 1859), the process of speciation and maintenance of biological diversity has caused intensive debate in the scientific and non-scientific communities alike. The ability to analyze differences in the ... -
Population genetic structures and dispersal patterns of arthropods in New Zealand and the Ross Dependency, Antarctica
(The University of Waikato, 2002)Climatic and geological changes have been recognised as fundamental mechanisms in the evolution of populations. This thesis assesses population genetic structures and dispersal patterns of arthropods in two geographic ...
