Botany
Recent Deposits
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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 ... -
The effects of ocean acidification on photosynthesis, growth, and carbon and nitrogen metabolism of Macrocystis pyrifera
Increases in atmospheric CO2 concentrations due to anthropogenic activities also cause an increase in oceanic CO2(aq), which will lead to a decline of 0.3-0.4 pH units in the surface ocean by 2100, termed ocean acidification ... -
Evolution Of Sequestrate Cortinarius In New Zealand
In order to investigate the evolution of sequestrate fungi in New Zealand, phylogenetic analyses were carried out to discover the relationships between sequestrate fungi and their relatives. Three loci (ITS, LSU and RPB2) ... -
Understanding The Significance Of Pre-Treatment In The Post-Cryopreservation Survival Of Kiwifruit Shoot Tips Through Biochemical And Ultrastructural Studies
The number of vegetatively propagated species conserved by cryopreservation is increasing thanks to the development of vitrification-based methods in recent years. Although the most economically important horticultural ... -
The reproductive ecology of Icmadophila splachnirima, including aspects of the reproduction in additional members of Icmadophilaceae
This thesis describes a journey of discovery of the reproductive mechanisms used by certain members of the Icmadophilaceae – a group of lichens about whose reproductive mechanisms there has been much confusion in the ... -
Environmental controls on the physiology of the marine coccolithophore Emiliania huxleyi strain NIWA 1108
Anthropogenic activities have affected the global climate rapidly; different environmental factors important for oceanic productivity have been altered. The concurrent changes in multiple environmental drivers affect the ... -
The impact of introduced flowering species on alpine plant-pollinator networks in southern New Zealand
New Zealand’s flora includes approximately 50% naturalised introduced flowering plant species and many have established in alpine and montane areas forming novel communities along with introduced pollinating insects. ...