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Dissertations / Theses on the topic 'New Zealand Population Statistics'

Author: Grafiati

Published: 11 December 2022

Last updated: 31 July 2025

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1

Rate, Stephen R., and n/a. "Invertebrate diversity and vegetation heterogeneity : plant-invertebrate relationships in indigenous New Zealand grasslands." University of Otago. Department of Botany, 2005. http://adt.otago.ac.nz./public/adt-NZDU20061025.144447.

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Spatial heterogeneity of the environment, as measured by floral diversity, composition and structure, is known to influence the distribution and diversity of invertebrates. Heterogeneity brought about by anthropogenic disturbance may be a threat to invertebrate diversity. This thesis investigates the impacts of vegetation heterogeneity at a range of scales on the diversity of invertebrate populations in modified high-altitude indigenous grasslands on the Rock and Pillar Range, Central Otago. Invertebrates were sampled in and on the edges of snow tussock fragments to assess whether species ri

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2

Dillingham, Peter W., and n/a. "Population modelling of albatrosses and petrels with minimal demographic information." University of Otago. Department of Mathematics & Statistics, 2009. http://adt.otago.ac.nz./public/adt-NZDU20090813.152547.

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There are hundreds of thousands of fisheries-related mortalities of seabirds each year. Population trends for these species are highly influenced by changes in adult survival, their maximum growth rates are low, and little additional mortality can have a large impact on the population. As a result, many albatrosses and petrels are at risk of extinction, but limited demographic data makes it difficult to quantify the risk for many species. The goal of this research is to use population modelling tools to assess potential impacts with minimal data. In particular, the question of how much additio

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3

Kardos, Julian, and n/a. "Visualising attribute and spatial uncertainty in choropleth maps using hierachical spatial data models." University of Otago. Department of Information Science, 2006. http://adt.otago.ac.nz./public/adt-NZDU20060908.151014.

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This thesis defines a novel and intuitive method to visually represent attribute uncertainty, and spatial boundary uncertainty generated from choropleth maps. Like all data, it is not possible to know exactly how far from the truth spatial data used for choropleth mapping is. When spatial data is used in a decision-making context a visual representation of data correctness may become a valuable addition. As an example, the visualisation of uncertainty is illustrated using choropleth mapping techniques superimposed on New Zealand 2001 census data, but other spatial datasets could have been empl

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4

Fowler, Anthony, and Gretel Boswijk. "Chronology Stripping as a Tool for Enhancing the Statistical Quality of Tree-Ring Chronologies." Tree-Ring Society, 2003. http://hdl.handle.net/10150/262571.

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Replication is a key principle in tree-ring research. Dendrochronologists strive to maximise sample size to enhance the "signal" in tree-ring chronologies, often relying on crossdating to provide an effective quality control filter. However, is crossdating alone a sufficient quality test for incorporating a series into a site chronology? We address this question using an objective and automated "chronology stripping" method designed to maximise the chronology's "Expressed Population Signal" (EPS), by iteratively removing series which lower chronology EPS. A 15-site data set of Agathis australi

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5

McKenzie, Jane, and janemckenzie@malpage com. "Population demographics of New Zealand fur seals (Arctocephalus forsteri)." La Trobe University. Zoology Department, School of Life Sciences, 2006. http://www.lib.latrobe.edu.au./thesis/public/adt-LTU20080509.121141.

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Assessment of trophic interactions between increasing populations of New Zealand fur seals (Arctocephalus forsteri) and fisheries in southern Australia is limited due to a lack of species specific demographic data and an understanding of the factors influencing population growth. To establish species specific demographic parameters a cross-sectional sample of New Zealand fur seal females (330) and males (100) were caught and individually-marked on Kangaroo Island, South Australia between 2000 and 2003. The seals were aged through examination of a postcanine tooth, which was removed from each a

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6

Lamoureaux, S. L. "Demography and population models for Hieracium Pilosella in New Zealand." Thesis, University of Canterbury. Plant and Microbial Sciences, 1998. http://hdl.handle.net/10092/4866.

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Hieracium pilosella has become a major concern in the high country grasslands of New Zealand. This thesis provides an understanding of the population dynamics of H. pilosella in an area which has supported the weed as a major component of the vegetation for more than 30 years. The study uses a combined modelling and experimental approach to determine vital rates and regulatory mechanisms. It then uses these to predict the rate of spatial spread, change in density, and the likely impact of biological control. Mature populations of H pilosella at Mt. John were found to be regulated by the intera

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7

Fraser, Elizabeth Anne. "Population Ecology of Thelymitra matthewsii Cheeseman Orchidaceae, in Northern New Zealand." The University of Waikato, 2008. http://hdl.handle.net/10289/2291.

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The terrestrial orchid Thelymitra matthewsii Cheeseman, uncommon in New Zealand, was studied to increase knowledge of the species life cycle, morphology and ecology. Results will enhance future conservation management for the species. New information related to the morphology of T. matthewsii was obtained. The species was found to emerge in one of four discrete life stages of distinctive morphology and height range that remained constant for the season, not developing into a more advanced life stage. The leaf of the three pre adult life stages designated a hook, a spiral, and a non flowering

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8

Rockell, Jennifer, and n/a. "Serum 25-hydroxyvitamin D concentrations and their determinants in the New Zealand population." University of Otago. Department of Nutrition, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080929.142611.

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Adequate vitamin D status plays an important role in bone health and may also protect against Type 1 Diabetes (T1D), multiple sclerosis and certain cancers. Vitamin D is obtained from two sources; diet and through skin synthesis through the action of ultraviolet (UV) light. Dietary intakes of vitamin D are low in New Zealand (NZ) and the majority of our vitamin D comes from UV exposure. The NZ population may be at risk of low vitamin D status because of low dietary intakes, the country�s latitude (35-46 �S), and high proportion of darker skinned Maori and Pacific People. While case reports hav

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9

Ostrow, D. Gigi, and n/a. "Larval dispersal and population genetic structure of brachiopods in the New Zealand fiords." University of Otago. Department of Marine Science, 2007. http://adt.otago.ac.nz./public/adt-NZDU20070308.144342.

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New Zealand�s fourteen deep-water fiords have complex physical and hydrographic features as well as strong environmental gradients, all of which may influence the population structure of organisms that inhabit the fiords. I examined the population structure of the brachiopod Terebratella sanguinea over ecological and evolutionary time scales in relation to physical and hydrographic features of the fiords. To further explore the role of larval dispersal in this system, comparisons between population genetic structure of T. sanguinea and a brachiopod with a contrasting larval dispersal strategy

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10

Webber, D'Arcy Nathan. "Demography and Population Projections of the Invasive Tunicate Styela clava in southern New Zealand." Thesis, University of Canterbury. Biological Sciences, 2010. http://hdl.handle.net/10092/4950.

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This thesis is about the demography of the tunicate Styela clava, a species of some notoriety because of its invasiveness and impacts in many parts of the world. Species assemblages have continuously changed throughout evolutionary history, but the rate of today’s anthropogenically facilitated dispersal is unparalleled in history. Non-indigenous species (NIS) are now considered one of the most important risks to native biodiversity. NIS become invasive by becoming both widespread and locally dominant. This requires that a species becomes established, spreads locally, and increases in abundance

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11

Becconsall, Karyn, and n/a. "Analysis of radiolucent jaw lesions in a New Zealand population over a twenty-year period." University of Otago. School of Dentistry, 2008. http://adt.otago.ac.nz./public/adt-NZDU20081202.144835.

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The maxilla and mandible may be affected by a wide variety of lesions of developmental, neoplastic or inflammatory origin. These lesions have a vast array of clinical and radiographic presentations from which a dentist forms a clinical provisional diagnosis and treats the lesions accordingly. The aim of this study was to determine the range, demographic and clinical features of all histologically diagnosed radiolucent jaw lesions in a New Zealand population over a twenty-year period. Additionally, the provisional diagnosis was compared to the histopathological diagnosis in an effort to gain an

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12

McKinnon, Jean Fiona, and n/a. "Aspects of the population biology of the southern arrow squid, Nototodarus sloanii, in southern New Zealand." University of Otago. Department of Marine Science, 2007. http://adt.otago.ac.nz./public/adt-NZDU20071204.161531.

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Nototodarus sloanii is an important component of the Southern Ocean fauna, and the basis of a large commercial fishery. Despite this, much is unknown about the biology of this species. This study examines some aspects of the biology of N. sloanii. Stomach contents analysis identified no significant differences in diet between male and female squid. Sixteen putative species, including 12 identifiable teleosts, 2 crustaceans, and 2 cephalopods were identified in the diet of this species. The euphausid, Nyctiphanes australis was the most important prey item, Lanternfish, Lampanyctodes hectoris,

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13

Kristensen, Esben Astrup, and n/a. "Population dynamics, spawning and movement of brown trout in Taieri River tributary streams." University of Otago. Department of Zoology, 2007. http://adt.otago.ac.nz./public/adt-NZDU20070314.091924.

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The aim of this study was to investigate population densities and dynamics of brown trout along multiple tributaries of the Taieri River, a large New Zealand river. Relationships between juvenile brown trout population dynamics and food availability, discharge and water temperature were examined in the same lowland stream. Downstream movements of juvenile brown trout were also examined. Trace element analyses of eggs aimed to identify the source of fish spawning in tributary streams. An experimental study of juvenile brown trout collected from downstream and upstream reaches compared patterns

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14

Miller, Laura Jean. "Population mixing and the geographical epidemiology of childhood leukaemia and type 1 diabetes in New Zealand." Thesis, University of Canterbury. Geography, 2008. http://hdl.handle.net/10092/1530.

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Over the past twenty years the incidence of both childhood acute lymphoblastic leukaemia (ALL) and type 1 diabetes have risen in many developed countries, including New Zealand. Although the explanations for this increase and the precise aetiology of both diseases remain unclear, environmental factors are thought to be important. One factor receiving increasing attention is the role of infections introduced through population mixing. However, previous studies on this topic show mixed results and population mixing itself tends to be under-theorised. Furthermore, this issue has not been adequate

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15

Debruyne, Christine Anne. "Fluctuating asymmetry and body morphology in relation to population bottlenecks of introduced birds in New Zealand." Thesis, University of Canterbury. Biological Sciences, 2008. http://hdl.handle.net/10092/3326.

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The introduction of exotic bird species to New Zealand (NZ) from the United Kingdom (UK) over 100 years ago unintentionally created an ideal study system to examine potential changes in developmental stability due to bottleneck effects. In this study I measured fluctuating asymmetry (FA; random deviations from symmetry between bilaterally symmetrical traits) in 13 species of introduced birds in NZ. FA has been used for conservation purposes as an early warning system of increased developmental instability (DI; the inability to cope with random genetic or environmental perturbations during deve

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16

Kinnison, M. T. "Life history divergence and population structure of New Zealand chinook salmon : a study of contemporary microevolution /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/5316.

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17

Allen, Sophy Elizabeth. "The effect of population bottleneck size on parasitic load and immunocompetence of introduced birds in New Zealand." Thesis, University of Canterbury. Biological Sciences, 2008. http://hdl.handle.net/10092/1951.

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I investigated parasitic infection and immunocompetence in populations of introduced bird species in New Zealand (NZ) that had experienced a range of population bottlenecks (11-808 individuals), and compared these parameters to non-bottlenecked conspecifics in the United Kingdom (UK). My aims were two-fold; firstly to assess if population bottlenecks are linked to increased parasite loads and/or decreased immunocompetence, and secondly, to assess at what severity of bottleneck these effects become evident. I found that ectoparasite load (chewing lice, Order: Phthiraptera, Sub-Orders: Amblyce

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18

Horsburgh, Simon, and n/a. "A feasibility study of occupational exposure and acute injury outcome information collection methods for New Zealand agricultural workers." University of Otago. Dunedin School of Medicine, 2006. http://adt.otago.ac.nz./public/adt-NZDU20060831.110516.

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Background: Agricultural workers in New Zealand have high rates of occupational injury compared to most other occupational groups. They are also over-represented in work-related fatal injury statistics. While it is recognised that the personal and social costs of occupational injuries to agricultural workers are considerable, the ability to develop and evaluate evidence-based injury control strategies for this group has been limited by the lack of quality information on occupational exposures and injury events. Aim: The aim of this thesis was to develop and pilot a comprehensive occupational

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19

Idle, Julian Clifford. "The preparedness and response of the population of Lyttelton, New Zealand, and surrounding areas, for and to hazards." Thesis, University of Canterbury. Department of Geological Sciences, 2012. http://hdl.handle.net/10092/7245.

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Small, tight-knit communities, are complex to manage from outside during a disaster. The township of Lyttelton, New Zealand, and the communities of Corsair Bay, Cass Bay, and Rapaki to the east, are especially more so difficult due to the terrain that encloses them, which caused them to be cut-off from Christchurch, the largest city in the South Island, barely 10 km away, after the Mw 7.1 Darfield Earthquake and subsequent Canterbury Earthquake Sequence. Lyttelton has a very strong and deep-rooted community spirit that draws people to want to be a part of Lyttelton life. It is predominantly re

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20

West, David William. "Responses of wild freshwater fish to anthropogenic stressors in the Waikato River of New Zealand." The University of Waikato, 2007. http://hdl.handle.net/10289/2601.

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To assess anthropogenic impacts of point-source and diffuse discharges on fish populations of the Waikato River, compare responses to different discharges and identify potential sentinel fish species, we sampled wild populations of brown bullhead catfish (Ameiurus nebulosus, (LeSueur, 1819)), shortfin eel (Anguilla australis Richardson, 1848), and common bully (Gobiomorphus cotidianus McDowall, 1975) in the Waikato River. Sites upstream and downstream of: geothermal; bleached kraft mill effluent (BKME); sewage and thermal point-source discharges were sampled. At each site, the population param

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21

Tezanos, Pinto Gabriela. "Population structure, abundance and reproductive parameters of bottlenose dolphins (Tursiops truncatus) in the Bay of Islands (Northland, New Zealand)." Thesis, University of Auckland, 2009. http://hdl.handle.net/2292/5799.

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Bottlenose dolphins (Tursiops truncatus) occupy a wide range of coastal and pelagic habitats throughout tropical and temperate waters worldwide. Around New Zealand, bottlenose dolphins inhabit three discontinuous regions in the north-eastern coast of the North Island, Marlborough Sound and Fiordland in the South Island. All these populations are subject to anthropogenic activities including dolphin-based tourism industry. Along the north-eastern coast of the North Island, the Bay of Islands presents a unique opportunity to study this population because of regular occurrence year-round and a hi

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22

Carroll, Emma Louise. "Return of the right whale: assessment of abundance, population structure and geneflow in the New Zealand southern right whale." Thesis, University of Auckland, 2011. http://hdl.handle.net/2292/11541.

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Southern right whales were hunted to near extinction, with an estimated 150,000 killed by intensive 19th century and illegal 20th century whaling. This thesis focuses on the coastal calving grounds of New Zealand (NZ) and Australia, where previous genetic work and survey work suggests 2 genetically distinct stocks are recovering ... Overall, the picture is encouraging for the recovering NZ southern right whale, suggesting the population is increasing at a rate comparable with conspecific stocks. The status of the NZ southern right whale as a distinct stock based on differentiation of mtDNA hap

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23

Hutton, Nicole Suzanne. "Population Dynamics and Vulnerability Reduction: The Role of Non-Profit Organizations Following the 2011 Earthquake in Christchurch, New Zealand." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/5964.

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With the adoption of neo-liberal policies and the decline in social welfare, non-profit organizations have been increasingly integrated into public service provision. Such changes raise questions regarding formal policies and access for marginalized populations, no more so than in disaster settings as formal disaster management of sexual health services are still vague. This study identifies the role of non-profit organizations in providing public health and social services through the lens of sexual health commitments following the September 2010 Darfield Earthquake and subsequent major after

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24

Wallace, Matthew Fitzgerald. "Using population genetics to assess the dispersal patterns of the New Zealand mayfly Coloburiscus humeralis in a landscape context." Thesis, University of Canterbury. Biological Sciences, 2013. http://hdl.handle.net/10092/9690.

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Mayfly species, such as Coloburiscus humeralis, are an important organism in freshwater ecosystems. As well as often being crucial intermediary links in food webs, mayfly nymphs provide a number of vital in stream functions that contribute to ecosystem health. The threat to stream invertebrate populations from habitat destruction as well as chemical and nutrient additions from agricultural land use has had considerable attention in New Zealand. However, less has been done on the potential barriers to dispersal that may negatively affect the health of stream insect populations. The goal of this

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25

Smith, Derek, and n/a. "Movements, population dynamics and predatory behaviour of stoats inhabiting alpine grasslands in Fiordland." University of Otago. Department of Zoology, 2006. http://adt.otago.ac.nz./public/adt-NZDU20070330.160940.

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Stoats are introduced mammalian carnivores implicated in the decline of several of New Zealand�s endemic species. Most research into stoats in New Zealand has focused on beech forest habitat, especially in years of peak stoat abundance following heavy beech seedfall and peak cohorts of mice. In New Zealand, alpine grasslands occur above the altitudinal limit of beech forest (900-1000 m a.s.l.). Although previous research has shown stoats to be present there, little is known about the ecology of stoats in alpine grasslands. This research aimed to test whether alpine grasslands were a marginal h

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Pontin, David R. "Factors influencing the occurrence of stinging jellyfish (Physalia spp.) at New Zealand beaches." Lincoln University, 2009. http://hdl.handle.net/10182/1580.

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Individuals of the cnidarian genus Physalia are a common sight at New Zealand beaches and are the primary cause of jellyfish stings to beachgoers each year. The identity of the species and the environmental factors that determine its presence are unknown. Lack of knowledge of many marine species is not unusual, as pelagic invertebrates often lack detailed taxonomic descriptions as well as information about their dispersal mechanisms such that meaningful patterns of distribution and dispersal are almost impossible to determine. Molecular systematics has proven to be a powerful tool for species

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27

Allentoft, Morten Erik. "An Ancient DNA Study of Four Sympatric Species of Moa (Aves: Dinornithiformes) from Holocene Deposits in North Canterbury, South Island, New Zealand." Thesis, University of Canterbury. Biological Sciences, 2010. http://hdl.handle.net/10092/5264.

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Ancient DNA (aDNA) was isolated from the bones of 290 individuals and four species of extinct New Zealand moa. All sampled bones had been recovered from a small geographic area (~10 km radius) near Waikari in North Canterbury. A total of 217 specimens were 14C-AMS dated, providing a temporal framework for the genetic analyses and an unprecedented opportunity to study extinct megafauna at the population level. Taxon and sex were determined for each individual, using aDNA technology. This revealed a large excess of females (overall ♂:♀ = 1:5.1), and significant compositional differences for the

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Laws, Rebecca, and n/a. "The causes of nest failure and effects of inbreeding depression in a historically small population of New Zealand Stewart Island robins." University of Otago. Department of Zoology, 2009. http://adt.otago.ac.nz./public/adt-NZDU20090813.114240.

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Inbreeding depression is one of the factors that can increase the risk of extinction of small populations, and therefore understanding its effects is currently an important issue in conservation biology. Until recently, few studies on inbreeding depression were carried out in wild populations. These recent studies have highlighted the variability in detecting inbreeding depression among natural populations and the multitude of factors that can influence its expression. Many of the factors affecting inbreeding depression in wild populations remain largely unexplored and most of the recent studi

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29

Ramrakha, Sandhya, and n/a. "The link between mental health problems and sexual risk taking in a general population sample." University of Otago. Dunedin School of Medicine, 2009. http://adt.otago.ac.nz./public/adt-NZDU20090527.155127.

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This thesis examined whether mental health problems and sexual risk taking were associated in a general population sample and if so, the extent and direction of this association. The thesis begins with a review of theories of risk taking; sexual risk and mental health correlates; and the existing studies linking mental health and sexual risk taking. Three empirical studies were conducted. Study One produced new evidence that a range of psychiatric disorders were linked to early sex (<16 years), risky sex (multiple partners and inconsistent condom use in the past year at age 21) and sexually

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Clucas, Rosemary, and n/a. "Kia Whakamaramatia Mahi Titi : predictive measures for understanding harvest impacts on Sooty Shearwaters (Puffinus griseus)." University of Otago. Department of Mathematics & Statistics, 2009. http://adt.otago.ac.nz./public/adt-NZDU20090813.140751.

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The sooty shearwater (also known as the muttonbird, Titi, Puffinus griseus) is a long-lived super-abundant, burrow nesting petrel, harvested by Rakiura Maori from breeding colonies, located in southern New Zealand. The harvest is culturally defining and enormously important for Rakiura Maori. The work in this thesis contributes to the Kia Mau te Titi Mo Ake Tonu Atu Research Project being undertaken by Rakiura Maori and the University of Otago, towards assessing ongoing sustainability of the harvest and future threats. Analyses of eight muttonbirder harvest records spanning, 1938 to 2004, show

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31

Coombs, Ngaire Anne. "Health inequalities in New Zealand : an examination of mortality and hospital utilisation trends, with reference to the compression of morbidity hypothesis." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/192871/.

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This thesis examines health inequalities by area-level socioeconomic deprivation, and health in later life in New Zealand. It identifies whether expansion or compression of morbidity is occurring at the end of life. It asks if overall morbidity at a population level is likely to increase or decrease in future as life expectancy increases, and if the same trend is seen for more and less deprived areas. The focus of this research is the identification and dissemination of mortality and morbidity patterns present in two large datasets, using powerful but relatively simple techniques. Large admini

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32

Ates, Serkan. "Grazing management of subterranean clover (Trifolium subterraneum L.) in South Island (New Zealand)." Diss., Lincoln University, 2009. http://hdl.handle.net/10182/1338.

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This study consisted of two sheep grazed dryland pasture experiments. Experiment l compared sheep production from 3-year-old cocksfoot based pastures grown in combination with white, Caucasian, subterranean or balansa clover with a ryegrass-white clover pasture and a pure lucerne forage. Sheep liveweight gain per head from each pasture treatment and the pure lucerne stand was recorded in the 2006/07 and 2007/08 seasons. The cocksfoot-subterranean clover pasture provided equal (381 kg LW/ha in 2006) or higher (476 kg LW/ha in 2007) animal production in spring and gave the highest total animal p

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Svärd, Karl. "Developing new methods for estimating population divergence times from sequence data." Thesis, Uppsala universitet, Institutionen för medicinsk biokemi och mikrobiologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-450123.

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Methods for estimating past demographic events of populations are powerful tools in order to get insights of otherwise hidden pasts. The genetic data of people is a valuable resource for these purposes as patterns of variation can inform of the past evolutionary forces and historical events that generated them. There is, however, a lack of methods within the field that uses this information to its full extent. That is why this project has looked at developing a set of new alternatives for estimating demographic events. The work done has been based on modifying the purely sequence based method

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Brandt, Christopher Perry. "Past, Present and Future: An Examination of Quality of Life in New Zealand and the interRAI Quality of Life Survey." Thesis, University of Canterbury. Health Sciences Centre, 2010. http://hdl.handle.net/10092/5758.

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InterRAI is an internationally validated assessment tool used in many different contexts to assist different groups of people and patients to live fuller, safer and more productive lives. In 2008, the New Zealand Ministry of Health, after the completion a trial of the interRAI – Home Care assessment tool in the District Health Board, rolled out implementation of the interRAI – Home Care tool throughout New Zealand’s 21 District Health Boards. The Quality of Life survey itself is currently being assessed and trialled throughout the world as a follow-up to the Home Care assessment. It will enabl

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35

Parkkali, Seija Anna. "The role of natural selection and adaptation versus phenotypic plasticity in the invasive success of Hieracium lepidulum in New Zealand." Thesis, University of Canterbury. Biological Sciences, 2008. http://hdl.handle.net/10092/1799.

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Hieracium lepidulum is an invasive weed in New Zealand. It colonises a wide range of habitats including pine plantations, scrubland, native Nothofagus forest, and mid-altitude to alpine tussock grassland, where it is competing with indigenous species. Understanding the breeding systems and population genetic structure of H. lepidulum is important for biocontrol, and aids in the understanding of evolutionary colonisation processes. H. lepidulum is a triploid, diplosporous, obligate apomict. This type of reproduction through clonal seed does not involve meiosis or fertilisation, and theoreticall

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Keye, Constanze. "A study of home ranges, movement and activity patterns of Great Spotted Kiwi (Ateryx haastii) in the Hurunui Region, South Island, New Zealand." Lincoln University, 2008. http://hdl.handle.net/10182/1195.

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All kiwi species (Apteryx spp.) have suffered serious decline since human arrival and are nowa-days threatened on the New Zealand mainland. One of the most elusive, and as a result least known among the different kiwi species, is the great spotted kiwi (Apteryx haastii). Hence, little is known about the current status of the remaining great spotted kiwi populations or their popu-lation dynamics. Three main ‘natural’ populations are found in Northwest Nelson, the Paparoa Range and in the Arthur’s Pass Hurunui district. In 2007, the Department of Conservation started a great spotted kiwi populat

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Boessenkool, Sanne, and n/a. "Spatial and temporal genetic structuring in yellow-eyed penguins." University of Otago. Department of Zoology, 2009. http://adt.otago.ac.nz./public/adt-NZDU20090812.163749.

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Improving our understanding of the forces driving population decline and the processes that affect the dynamics of threatened populations is central to the success of conservation management. The application of genetic tools, including our ability to examine ancient DNA, has now revolutionised our ability to investigate these processes. The recent human settlement of the Pacific, particularly in New Zealand, provides a unique, accessible system for revealing anthropogenic impacts on native biota. In this thesis I use genetic analyses from modern, historic and subfossil DNA to investigate tempo

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Rynhart, Patrick Reuben. "Mathematical modelling of granulation processes : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Mathematical Physics at Massey University, Palmerston North, New Zealand." Massey University. Institute of Fundamental Sciences, 2004. http://hdl.handle.net/10179/242.

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Granulation is an industrial process where fine particles are bound together into larger granules. The process has numerous applications including the manufacture of pharmaceuticals and the production of cosmetics, chemicals, detergents and fertilisers. This thesis studies aspects of wet granulation which involves the application of a viscous binder, usually in the form of a spray, to an agitated bed of powder particles. Individual powder particles may adhere together, joined by small quantities of binder fluid called liquid bridges. By a process of collision and adherence additional particles

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Walsh, David Leonard. "Directional statistics, Bayesian methods of earthquake focal mechanism estimation, and their application to New Zealand seismicity data : a thesis submitted to the Victoria University of Wellington in fulfilment of the requirements for the degree of Master of Science in Statistics /." ResearchArchive@Victoria e-Thesis, 2008. http://hdl.handle.net/10063/350.

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Vargas, Mariana L. "Host-parasite coevolution in New Zealand: how has Odontacarus, a mite with a free-living stage in its life-cycle, coevolved with its skink host?" Lincoln University, 2006. http://hdl.handle.net/10182/1072.

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The effect of a free-living stage in host-parasite coevolution: a skink mite phylogenetic study in New Zealand. During the last decade, phylogenetic trees have even been used to compare ecologically related taxa such as parasites and their hosts, and are used to determine their level of coevolution or reciprocal adaptation in time. Diverse coevolutionary events have been detected for this ecological association, where generally the parasite has been regarded as one that feeds exclusively on the host and is likely to cospeciate with it. A different coevolutionary pattern might occur when the

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Jeunesse, Paulien. "Estimation non paramétrique du taux de mort dans un modèle de population générale : Théorie et applications. A new inference strategy for general population mortality tables Nonparametric adaptive inference of birth and death models in a large population limit Nonparametric inference of age-structured models in a large population limit with interactions, immigration and characteristics Nonparametric test of time dependance of age-structured models in a large population limit." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLED013.

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L’étude du taux de mortalité dans des modèles de population humaine ou en biologie est le cœur de ce travail. Cette thèse se situe à la frontière de la statistique des processus, de la statistique non-paramétrique et de l’analyse.Dans une première partie, centrée sur une problématique actuarielle, un algorithme est proposé pour estimer les tables de mortalité, utiles en assurance. Cet algorithme se base sur un modèle déterministe de population. Ces nouvelles estimations améliorent les résultats actuels en prenant en compte la dynamique globale de la population. Ainsi les naissances sont incorp

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Burrows, Ben Robert. "Do Severe Genetic Bottlenecks Lead to Greater Reproductive Failure?" Thesis, University of Canterbury. Biological Sciences, 2006. http://hdl.handle.net/10092/1344.

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It is generally accepted that populations which experience severe bottlenecks have a reduction in fitness. One of the most frequently reported fitness costs is increased hatching failure in bottlenecked populations of birds. The mechanism responsible for increased hatching failure is unknown. Research on other animals suggest that reduced population numbers cause unavoidable inbreeding that in turn leads to abnormalities in the gametes. In this thesis I examine some of the possible causes for increased hatching failure in severely bottlenecked populations of introduced birds in New Zealand. I

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McDonald, Amy Elizabeth. "Improving the success of a translocation of black mudfish (Neochanna diversus)." The University of Waikato, 2007. http://hdl.handle.net/10289/2345.

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All of New Zealand's five endemic species of mudfish (Neochanna) are threatened, and translocation has been recommended as an option for conservation. This research undertakes a translocation of black mudfish (Neochanna diversus) into wetland margins of Lake Kaituna, in the Waikato region, and addresses research questions applicable to improving translocation success. Results from this research are intended to aid possible future translocations of the more threatened Northland mudfish (Neochanna heleios) and other genetically distinct populations of black mudfish. Captive rearing of juvenil

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Thompson, Kirsten Freja. "Secrets of the deep : the molecular genetics of cryptic beaked whales." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/27760.

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Beaked whales are comparatively unknown social mammals due to their deep-ocean distribution and elusive habits. The deep-ocean is the largest biome on Earth and the final frontier for human expansion. Since their first discovery, beaked whales have remained largely hidden from science. In this era of rapid technological advancement, genetic and genomic methods are key tools for population biologists and are particularly useful in describing rarely seen species. Using DNA-barcoding and nuclear markers, the publications in this thesis provide data on the distribution and external appearance of t

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Schmechel, Frances A. "Aspects of habitat selection, population dynamics, and breeding biology in the endangered Chatham Island oystercatcher (Haematopus chathamensis)." Lincoln University, 2001. http://hdl.handle.net/10182/1814.

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In the late 1980s the endangered Chatham Island oystercatcher (Haematopus chathamensis) (CIO) was estimated at less than 110 individuals. Endemic to the Chatham Islands, New Zealand, it was feared to be declining and, based on existing productivity estimates, in danger of extinction within 50-70 years. These declines were thought to be caused by numerous changes since the arrival of humans, including the introduction of several terrestrial predators, the establishment of marram grass (Ammophila arenaria) which changes dune profiles, and increased disturbance along the coastline. The New Zealan

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Barron, M. C. "Population ecology of the red admiral butterfly (Bassaris gonerilla) and the effects of non-target parasitism by Pteromalus puparum." Lincoln University, 2004. http://hdl.handle.net/10182/1763.

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There is anecdotal evidence that populations of the New Zealand endemic red admiral butterfly Bassaris gonerilla (F.) have declined since the early 1900s. This decline has been associated with the introduction of the generalist pupal parasitoids Pteromalus puparum (L.) and Echthromorpha intricatoria (F.). The former was deliberately introduced for the biological control of the cabbage white butterfly (Pieris rapae (L.)); the latter is an adventitious arrival from Australia. The objective of this thesis was to quantify, using population models, the effect that P. puparum is having on B. goneril

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Krosch, Matthew Neil. "Evolutionary biology of Gondwanan non-biting midges (Diptera: Chironomidae)." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/41749/1/Matthew_Krosch_Thesis.pdf.

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The potential restriction to effective dispersal and gene flow caused by habitat fragmentation can apply to multiple levels of evolutionary scale; from the fragmentation of ancient supercontinents driving diversification and speciation on disjunct landmasses, to the isolation of proximate populations as a result of their inability to cross intervening unsuitable habitat. Investigating the role of habitat fragmentation in driving diversity within and among taxa can thus include inferences of phylogenetic relationships among taxa, assessments of intraspecific phylogeographic structure and analys

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Searle, Deane. "Low Intensity Conflict: Contemporary Approaches and Strategic Thinking." The University of Waikato, 2007. http://hdl.handle.net/10289/2591.

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Low Intensity Conflict (LIC) is a significant feature of the contemporary world and it is a particular challenge to the armed forces of many states which are involved is such conflict, or are likely to become so. This thesis is not concerned with how such difficult conflict situations arise. Rather it is concerned with how, from the point of view of the state, they may be contained and ultimately brought to a satisfactory resolution. The work is thus concerned with the practicalities of ending LIC. More specifically, the purpose of this research is to establish a framework of doctrinal and

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Miller, Steven Duncan. "Stochastic modelling of rat invasions among islands in the New Zealand archipelago." 2008. http://hdl.handle.net/2292/3375.

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This project was formulated with the purpose of advancing knowledge of the invasion dynamics of rats within archipelagos in New Zealand. The concentration on islands reflected the conservation focus of this project - islands are the last refuges for many native New Zealand species that cannot survive in the wild on the mainland. This project can be divided into four areas: 1. Data collection: There was no intent for innovation here, but a deeper understanding of the environments in which rats are born, breed, migrate, and die was developed. 2. Development of tools for data exploration: • A use

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Heller, Florian. "Adjusting the parameter estimation of the parentage analysis software MasterBayes to the presence of siblings : a thesis presented in partial fulfillment of the requirements for the degree of Master of Applied Statistics at Massey University, Albany, New Zealand." 2009. http://hdl.handle.net/10179/1375.

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Parentage analysis is concerned with the estimation of a sample’s pedigree structure, which is often essential knowledge for estimating population parameters of animal species, such as reproductive success. While it is often easy to relate one parent to an offspring simply by observation, the second parent remains frequently unknown. Parentage analysis uses genotypic data to estimate the pedigree, which then allows inferring the desired parameters. There are several software applications available for parentage analysis, one of which is MasterBayes, an extension to the statistical software pac

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