title: Assessing the Diversity of New Zealand's Freshwater Copepods (Crustacea:Copepoda) using Mitochondrial DNA (COI) Sequences

authors: Watson, Nathan Thomas Noble

subjects: Copepods

abstract: 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 the diversity of two orders of New Zealand’s freshwater copepods; Cyclopoida and Harpacticoida. Where possible, I also assessed the global affinities of taxa using available sequences from global databases (e.g. GenBank, BOLD). Specimens were collected from several sites across both the North Island and South Island of New Zealand. From these, DNA was extracted from 246 individuals, of which COI sequences were successfully obtained from 84 (a success rate of 34%). Sequences represented 17 species of freshwater copepod; nine species of cyclopoid and eight species of harpacticoid; all species were clearly delineated by the COI gene. Intraspecific sequence divergences were generally <1% whereas interspecific divergences usually exceeded 13%. For the cyclopoid copepods, three taxa (two distinct species of Eucyclops cf. ‘serrulatus’  and Acanthocyclops americanus) showed close molecular affinities to Northern Hemisphere populations (<1% divergent in all cases); and are likely to represent recent human-mediated introductions to New Zealand. Additionally, Mesocyclops ‘leuckarti’ was <1% divergent to an undescribed cyclopoid species from South Australia, likely Mesocyclops australiensis. For the harpacticoids, specimens of Elaphoidella bidens and two geographically distinct populations of Bryocamptus pygmaeus showed high levels of intraspecific diversity (>12% and >18% divergent respectively), suggesting the presence of cryptic taxa. These results suggest that the diversity of New Zealand’s freshwater cyclopoid and harpacticoid copepods is underestimated and several non-indigenous taxa may be present among the New Zealand copepod fauna. I conclude that the COI gene will be a useful tool in assessing New Zealand’s native copepod biodiversity and also in identifying invasive species.

text: Assessing the Diversity of New Zealand's Freshwater Copepods (Crustacea:Copepoda) using Mitochondrial DNA (COI) Sequences 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 the diversity of two orders of New Zealand’s freshwater copepods; Cyclopoida and Harpacticoida. Where possible, I also assessed the global affinities of taxa using available sequences from global databases (e.g. GenBank, BOLD). Specimens were collected from several sites across both the North Island and South Island of New Zealand. From these, DNA was extracted from 246 individuals, of which COI sequences were successfully obtained from 84 (a success rate of 34%). Sequences represented 17 species of freshwater copepod; nine species of cyclopoid and eight species of harpacticoid; all species were clearly delineated by the COI gene. Intraspecific sequence divergences were generally <1% whereas interspecific divergences usually exceeded 13%. For the cyclopoid copepods, three taxa (two distinct species of Eucyclops cf. ‘serrulatus’  and Acanthocyclops americanus) showed close molecular affinities to Northern Hemisphere populations (<1% divergent in all cases); and are likely to represent recent human-mediated introductions to New Zealand. Additionally, Mesocyclops ‘leuckarti’ was <1% divergent to an undescribed cyclopoid species from South Australia, likely Mesocyclops australiensis. For the harpacticoids, specimens of Elaphoidella bidens and two geographically distinct populations of Bryocamptus pygmaeus showed high levels of intraspecific diversity (>12% and >18% divergent respectively), suggesting the presence of cryptic taxa. These results suggest that the diversity of New Zealand’s freshwater cyclopoid and harpacticoid copepods is underestimated and several non-indigenous taxa may be present among the New Zealand copepod fauna. I conclude that the COI gene will be a useful tool in assessing New Zealand’s native copepod biodiversity and also in identifying invasive species.

year: 2014

title: A logic boosting approach to inducing multiclass alternating decision trees

authors: Holmes, Geoffrey

subjects: computer science

abstract: The alternating decision tree (ADTree) is a successful classification technique that combine decision trees with the predictive accuracy of boosting into a ser to interpretable classification rules.  The original formulation of the tree induction algorithm restricted attention to binary classification problems.  This paper empirically evaluates several methods for extending the algorithm to the multiclass case by splitting the problem into several two-class LogitBoost procedure to induce alternating decision trees directly.  Experimental results confirm that this procedure is comparable with methods that are based on the original ADTree formulation in accuracy, while inducing much smaller trees.

text: A logic boosting approach to inducing multiclass alternating decision trees The alternating decision tree (ADTree) is a successful classification technique that combine decision trees with the predictive accuracy of boosting into a ser to interpretable classification rules.  The original formulation of the tree induction algorithm restricted attention to binary classification problems.  This paper empirically evaluates several methods for extending the algorithm to the multiclass case by splitting the problem into several two-class LogitBoost procedure to induce alternating decision trees directly.  Experimental results confirm that this procedure is comparable with methods that are based on the original ADTree formulation in accuracy, while inducing much smaller trees.

year: 2002-03

title: A Mana Wahine inquiry into indigenous governance

authors: Toi, Sharon Marjorie

subjects: Mana Wahine

abstract: This thesis investigates the question “How can indigenous women reinvigorate their role in tribal governance structures when many such structures continue to reinforce gendered colonial constructs within which women are marginalised?”  It is noted that contemporary tribal governance structures are often considered a site within which indigenous peoples can express cultural identity, however, when indigenous women are clearly under-represented in positions of power within those structures, this thesis questions why this situation continues. 
First, the thesis seeks to address the broad historical context within which indigenous women were subjected to colonial constructs of legislation, paternalistic government policies and the mechanisms of a euro-western court system policy. It is against this backdrop that comparisons are drawn that take into account the historical relationships between Māori, First Nations, Aboriginal, and Native American women and their respective colonising governments which bear alarming similarities in terms of the subjugation of these populations of women through colonisation. The significance of this historical-comparative lens is to illustrate how the status of women became seriously eroded within indigenous societies from traditional through to modern times. Consequently, this thesis goes on to explore the contemporary socio-political status of indigenous women as a result of their colonised history. 
From this broad historical context, the thesis narrows its view to examine commonalities and differences in relation to Māori and Native American women's experiences of tribal governance as tribal leaders and women of cultural significance and influence. The thesis changes tack to reflect the specific research intent of my Fulbright scholar experience to the University of Arizona, Tucson Arizona. Narrowing the focus of the research allowed me to analyse in more detail, beneficial comparisons of what was working for women tribal leaders under the auspices of the largely successful Native Nations Institute, Indigenous Governance Programme, in comparison to Māori women in tribal governance in Aotearoa, New Zealand. Importantly, this research synergises indigenous women’s shared knowledge in the reinvigoration of traditional tribal governance structures. The objective being to establish a body of knowledge that gives strength to a collective indigenous women's experience of governance from which normative propositions of indigenous governance based on western concepts can be examined, challenged and potentially transformed.  
It is noted that indigenous women have been included as essential decision-makers and leaders in traditional tribal governance systems; however, contemporary indigenous governance models do little to reflect this. The impact is that for indigenous women, tribal institutions and structures can themselves embed and reflect western colonial and patriarchal ideologies. Through our colonial experiences, indigenous peoples have inherited an oppressive gender legacy entrenched in policy and legislation that is socially constructed and instructed. To survive, indigenous women have to engage, challenge, resist and mitigate gendered spaces. This research highlights the extent to which indigenous women’s ways of leading or governing continue to be circumscribed in the on-going process of colonisation. Colonialism was a gendered process, and consequently, this thesis draws upon indigenous Feminist, Kaupapa Maori and Mana Wahine (Māori women’s) theoretical frameworks to analyse the complex ways that intersecting discourses of colonialism, race, gender and power continue to marginalise indigenous women within tribal governance. Indigenous Feminist theory also provides a framework for contextualising how First Nations, Aboriginal and Native American/American Indian women speak to these issues.  Importantly, how indigenous women are engaging in decolonising methodologies that impact the colonised practices, ways and attitudes they have or are currently experiencing in tribal governance, are also revealed.
Lastly, this thesis contributes to legal scholarship by contextualising the specific challenges of tribal governance for indigenous women. It addresses this by situating women’s experiences and ways of ‘being and doing’ within the micro tribal governance context while taking account of the macro realities of tribal governance politically, socially and more importantly, culturally.

text: A Mana Wahine inquiry into indigenous governance This thesis investigates the question “How can indigenous women reinvigorate their role in tribal governance structures when many such structures continue to reinforce gendered colonial constructs within which women are marginalised?”  It is noted that contemporary tribal governance structures are often considered a site within which indigenous peoples can express cultural identity, however, when indigenous women are clearly under-represented in positions of power within those structures, this thesis questions why this situation continues. 
First, the thesis seeks to address the broad historical context within which indigenous women were subjected to colonial constructs of legislation, paternalistic government policies and the mechanisms of a euro-western court system policy. It is against this backdrop that comparisons are drawn that take into account the historical relationships between Māori, First Nations, Aboriginal, and Native American women and their respective colonising governments which bear alarming similarities in terms of the subjugation of these populations of women through colonisation. The significance of this historical-comparative lens is to illustrate how the status of women became seriously eroded within indigenous societies from traditional through to modern times. Consequently, this thesis goes on to explore the contemporary socio-political status of indigenous women as a result of their colonised history. 
From this broad historical context, the thesis narrows its view to examine commonalities and differences in relation to Māori and Native American women's experiences of tribal governance as tribal leaders and women of cultural significance and influence. The thesis changes tack to reflect the specific research intent of my Fulbright scholar experience to the University of Arizona, Tucson Arizona. Narrowing the focus of the research allowed me to analyse in more detail, beneficial comparisons of what was working for women tribal leaders under the auspices of the largely successful Native Nations Institute, Indigenous Governance Programme, in comparison to Māori women in tribal governance in Aotearoa, New Zealand. Importantly, this research synergises indigenous women’s shared knowledge in the reinvigoration of traditional tribal governance structures. The objective being to establish a body of knowledge that gives strength to a collective indigenous women's experience of governance from which normative propositions of indigenous governance based on western concepts can be examined, challenged and potentially transformed.  
It is noted that indigenous women have been included as essential decision-makers and leaders in traditional tribal governance systems; however, contemporary indigenous governance models do little to reflect this. The impact is that for indigenous women, tribal institutions and structures can themselves embed and reflect western colonial and patriarchal ideologies. Through our colonial experiences, indigenous peoples have inherited an oppressive gender legacy entrenched in policy and legislation that is socially constructed and instructed. To survive, indigenous women have to engage, challenge, resist and mitigate gendered spaces. This research highlights the extent to which indigenous women’s ways of leading or governing continue to be circumscribed in the on-going process of colonisation. Colonialism was a gendered process, and consequently, this thesis draws upon indigenous Feminist, Kaupapa Maori and Mana Wahine (Māori women’s) theoretical frameworks to analyse the complex ways that intersecting discourses of colonialism, race, gender and power continue to marginalise indigenous women within tribal governance. Indigenous Feminist theory also provides a framework for contextualising how First Nations, Aboriginal and Native American/American Indian women speak to these issues.  Importantly, how indigenous women are engaging in decolonising methodologies that impact the colonised practices, ways and attitudes they have or are currently experiencing in tribal governance, are also revealed.
Lastly, this thesis contributes to legal scholarship by contextualising the specific challenges of tribal governance for indigenous women. It addresses this by situating women’s experiences and ways of ‘being and doing’ within the micro tribal governance context while taking account of the macro realities of tribal governance politically, socially and more importantly, culturally.

year: 2019