Botany
Recent Deposits
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Screening and Phenomic Characterization of Heavy Metal Pollution Resistance in Lettuce (Lactuca sativa)
Heavy metals are naturally occurring elements originating from the Earth’s crust, but through natural processes and anthropogenic activities they can be released into the soil where they can affect plant life. Some heavy ... -
High resolution remote sensing techniques to assess tall tussock grassland distribution and density
The ecological applications of remote sensing have progressed over time, largely as a result of improvements in remote sensing technology. Increases in both the spatial and temporal resolution of available imagery has ... -
Diet, distribution, and density of fallow deer (Dama dama) in the Caples Valley, Otago, New Zealand: implications for future management
Fallow deer (Dama dama, L.) were introduced into the Wakatipu area in c.1887 and quickly spread throughout the Greenstone and Caples Valleys. By 1937 periodic culling of animals was undertaken to control numbers. Recreational ... -
Postharvest storage of loose leaf lettuce (Lactuca sativa); the role of light, nutrients, bioactive levels and potential health benefits
A diet rich in fresh fruit and vegetables is associated with a reduced incidence of disease, this health benefit is largely due to bioactive compounds. Bioactive compounds are mostly secondary metabolites, many of which ... -
The Role of Biome Shifts in Lineage Diversification
This thesis examines the role of biomes in lineage diversification. It explores whether biome conservatism, the tendency to remain in ancestral biomes, constrains diversification, and tests whether biome shifts are linked ... -
Thallus heterogeneity of the cyanolichen Pseudocyphellaria crocata
A lichen is a symbiotic association between a fungus (the mycobiont) and one or more photosynthetic partners (the photobiont) which may be a green alga, a cyanobacterium (blue-green algae) or both a green alga and a ... -
The mycorrhizas of some New Zealand plants
The aim of this investigation has been to make a comparative survey of the occurrence of mycorrhizas in a number of native plants, with particular reference to the vesicular-arbuscular and Ericaceous types of endotrophic ... -
Ecophysiology of Ecklonia Radiata (Alariaceae: Laminariales) in Doubtful Sound, Fiordland
This is the first study to quantify temporal and spatial variations in growth rates and productivity, inorganic N uptake and photosynthetic performance of the subtidal brown macroalga, Ecklonia radiata, in relation to an ... -
De novo transcriptome generation and transcript analysis of apomictic and sexual seed development from Hieracium subgenus Pilosella
Apomixis is able to fix traits through the formation of maternal clonal seeds. Apomixis has been observed in diverse plant families, however rarely in crop plants. Transferring apomixis into crops to retain heterosis is ... -
Genome mutation and physiology of Synechocystis sp. PCC 6803 wild types and pH-sensitive Photosystem II mutants
The model cyanobacterium Synechocystis sp. PCC 6803 is widely used in studies of photosynthesis, environmental sensing, and stress-response. Its capacity for straightforward genetic engineering and the early publication ... -
Investigation of the high pH regulated genes slr1501 and sll1392 in the cyanobacterium Synechocystis sp. PCC 6803
Cyanobacteria are among the few microbes that have the ability to grow in elevated pH. The cyanobacterial acclimation to high pH involves the upregulation of mechanisms targeting pH homeostasis (such as Na+/H+ antiporters) ... -
The ecology and ethnobotany of karaka (Corynocarpus Laevigatus)
Historically there has been considerable debate over the origin of karaka ( Corynocarpus laevigatus J.R. et G. Forst.) in New Zealand. In contrast, the extent and importance of prehistoric arboriculture in New Zealand has ... -
Interactions between bee species in relation to floral resources
Bee communities in New Zealand are composed of native and introduced bees, including honey bees (Apis mellifera), which have been in the country for over 100 years. While there is evidence from other countries that honey ... -
Wine Grape Bioactive Production & Release Following Leaf Plucking & Pulsed Electric Field Treatment, & Wine Industry Applications
The research findings presented in this thesis describe some of the interactions that can take place between the climate and the endogenous metabolism of Vitis vinifera. Leaf plucking is a traditional vineyard management ... -
To bend the willow: the basket willows (Salix spp.) in New Zealand
The young shoots (rods) of willow (Salix, Salicaceae) have been used for basketmaking for at least two thousand years. The species, hybrids and varieties used for basketmaking are known to vary in rod dimensions and ... -
Insights into the soil microbial communities in New Zealand indigenous tussock grasslands
New Zealand indigenous tussock grassland ecosystems are highly valued for their biodiversity, as well as their natural and cultural heritage values. Extensive conversion of grasslands to agricultural land through burning, ... -
Multiple-stressor effects of agricultural stressors on stream benthic communities: Using genetic tools and biological traits to complement ecological research
Most ecosystems are subject to multiple anthropogenic stressors acting simultaneously, impacting biodiversity across all levels from genotypes to ecosystems. Stressors may interact, resulting in non-additive effects that ... -
Mycorrhizal status of rushes and sedges in New Zealand
1. 18% of rush and sedge field samples were infected with endomycorrhizal fungi. 2. In pot experiments, rushes and sedges remained nonmycorrhizal in soils of Truog P ≤ 3.6 1 μg /ml, despite inoculation with rush and ... -
Effects of Ocean Acidification, Temperature and Copper on the development of early life stages of the Native Kelp Macrocystis Pyrifera and the Invasive Kelp Undaria Pinnatifida from Southern New Zealand
Anthropogenic activities have increased atmospheric CO2 concentrations from pre-industrial concentrations of 280 ppm to current values of 400 ppm. These atmospheric emissions of CO2 are responsible for the ongoing increase ... -
Aspects of Alpha-niche differentiation in an herbaceous community
Alpha-niche differentiation arises when plant species use resources differently enough to co-exist and persist within a community (Wilson 2011). If alpha-niche differentiation is occurring at a fine scale, a community ...