Browsing by Supervisor "Hogg, Ian D."
Now showing items 1-20 of 29
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Dispersal patterns and population connectivity of New Zealand stream insects: Integrating landscape and population genetics
(The University of Waikato, 2022)Increasing anthropogenic habitat fragmentation in riverine ecosystems, in particular the loss of natural riparian vegetation, has profound consequences for dispersal and connectivity of aquatic insects. Aquatic insects ... -
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 ... -
Relationships among male size, reproductive success, female choice and male advertising calls in Little Penguins (Eudyptula minor)
(The University of Waikato, 2002)The role of male acoustic features in the process of mate choice was investigated in Little Penguins (Eudyptula minor). Male call features and the calling behaviour may reveal important information on male attributes that ... -
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 ... -
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 ... -
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 ... -
The effects of common carp on zooplankton communities using morphological and molecular techniques
(The University of Waikato, 2018)Understanding the factors causing a decline of water quality is important to ecologists, but particularly challenging given the complexity of natural systems. New Zealand’s freshwater ecosystems are under threat from ... -
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 ... -
The impact of macrophyte mats on biodiversity and ecosystem functioning of benthic communities
(The University of Waikato, 2018)Macroalgal blooms, such as Ulva spp., are a common disturbance to estuarine benthic fauna worldwide. As large quantities of macroalgae break free from growing substrates, drifting mats are formed that eventually deposit ... -
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 ... -
Zooplankton Dynamics in Wastewater Treatment High Rate Algal Ponds and development of effective control methods
(The University of Waikato, 2017)High Rate Algal Ponds (HRAPs) are effective and economical open pond to provide near tertiary-level wastewater (WW) treatment, with the nutrients recovered as algal biomass. However, WW treatment performance can be reduced ... -
Spatio-temporal distribution and diversity of zooplankton in zoo ponds relative to water quality parameters
(University of Waikato, 2006)Little is known of the distribution and abundance of zooplankton in New Zealand, and the environmental variables that affect their spatial and temporal dynamics. Furthermore, smaller pond habitats have often been overlooked ... -
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 ... -
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 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 ... -
Resistance to African black beetle (Heteronychus arator) in perennial ryegrass (Lolium perenne L.) infected with AR1 endophyte
(University of Waikato, 2016)The insect pest, African black beetle (Heteronychus arator (Fabricus, 1775)) is of considerable economic cost to the New Zealand agricultural industry, in regions where the insect is established and regular outbreaks are ... -
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) ... -
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 ... -
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 Taxonomy of Demospongiae (Porifera) from the Bay of Plenty, New Zealand - Connecting Linnaean and Phylogenetic Classification
(University of Waikato, 2015)The ability to accurately identify species is prerequisite for assessing levels of biological diversity and a fundamental requirement for ecological research. In recent times, there has been a shortfall in biologists who ...
