title: Identification and the role of hybridisation in Pittosporum

authors: Carrodus, Susan Kathleen

subjects: Pittosporum  turneri

abstract: Godley (1985) proposed that species which have separate juvenile and adult forms may be derived from hybridisation, and proposed that the rare, heteroblastic species P. turneri is a putative hybrid. This study aims to identify whether Pittosporum turneri is derived from hybridisation between a divaricating shrub (P. divaricatum) and a non-divaricating tree (P. colensoi), and to improve resolution of relationships among very closely related species within the genus Pittosporum. A combined approach was used to test the origin of P. turneri. Phylogenetic analysis of the maternally inherited trnT-trnL region of chloroplast DNA was undertaken to compare with a phylogeny based on the biparentally inherited internal transcribed spacer of nuclear ribosomal DNA (ITS) for all New Zealand Pittosporum species. Additionally, inter simple sequence repeats (ISSR's) and allozymes were used in an attempt to identify hybridisation between P. colensoi and P. divaricatum. A morphological study was undertaken to determine whether P. turneri is morphologicaly intermediate to the putative parents. Cross-pollination between the putative parents of P. turneri was also undertaken in the wild between female flowers of P. divaricatum and male flowers of P. colensoi to investigate whether hybridisation between these co-existing species is possible. 

The trnT-trnL region resolved several clades within the New Zealand Pittosporum previously unresolved by the ITS region alone. P. turneri has the same trT-trnL sequence as P. divaricatum, implicating P. divaricatum as the maternal parent. The profile of ISSR bands in P. turneri, exhibit additivity of bands found in P. colensoi and P. divaricatum, supporting a hybrid origin of P. turneri. Morphological analyses also show that P. turneri is intermediate to P. divaricatum and P. colensoi. The cross-pollination experiment was unsuccessful and no seedlings germinated, although four seeds appeared viable. It is proposed that P. turneri has a hybrid origin, however this finding needs to be supported by further work.

text: Identification and the role of hybridisation in Pittosporum Godley (1985) proposed that species which have separate juvenile and adult forms may be derived from hybridisation, and proposed that the rare, heteroblastic species P. turneri is a putative hybrid. This study aims to identify whether Pittosporum turneri is derived from hybridisation between a divaricating shrub (P. divaricatum) and a non-divaricating tree (P. colensoi), and to improve resolution of relationships among very closely related species within the genus Pittosporum. A combined approach was used to test the origin of P. turneri. Phylogenetic analysis of the maternally inherited trnT-trnL region of chloroplast DNA was undertaken to compare with a phylogeny based on the biparentally inherited internal transcribed spacer of nuclear ribosomal DNA (ITS) for all New Zealand Pittosporum species. Additionally, inter simple sequence repeats (ISSR's) and allozymes were used in an attempt to identify hybridisation between P. colensoi and P. divaricatum. A morphological study was undertaken to determine whether P. turneri is morphologicaly intermediate to the putative parents. Cross-pollination between the putative parents of P. turneri was also undertaken in the wild between female flowers of P. divaricatum and male flowers of P. colensoi to investigate whether hybridisation between these co-existing species is possible. 

The trnT-trnL region resolved several clades within the New Zealand Pittosporum previously unresolved by the ITS region alone. P. turneri has the same trT-trnL sequence as P. divaricatum, implicating P. divaricatum as the maternal parent. The profile of ISSR bands in P. turneri, exhibit additivity of bands found in P. colensoi and P. divaricatum, supporting a hybrid origin of P. turneri. Morphological analyses also show that P. turneri is intermediate to P. divaricatum and P. colensoi. The cross-pollination experiment was unsuccessful and no seedlings germinated, although four seeds appeared viable. It is proposed that P. turneri has a hybrid origin, however this finding needs to be supported by further work.

year: 2009

title: Discursive dissonance: Critical reflexivity for counselling supervision

authors: Esler, Ireni

subjects: supervision

abstract: When practitioners and supervisors do not share the same counselling language or theoretical orientation, how is shared meaning achieved and relational connection sustained in supervision? How are differences in theoretical orientation negotiated in supervision in ways that open space for collaborative, generative dialogue and critical reflection on the politics of practice? In response to these questions, this thesis presents a critical, reflexive practitioner-inquiry exploring the possibilities and limitations a social constructionist and narrative approach to supervision makes possible for students learning apolitical, humanistic approaches to counselling. Positioned in theoretical landscapes of social constructionism, feminist poststructuralism and Narrative Therapy, this study is a reflection-in-action of a supervisor’s practice. Central to the study’s argument is discursive positioning theory; the associated concepts of relational identity, authorship and agency; and the self as a storying subject. Two student counsellors and two newly qualified counsellors, whose practice was shaped by structuralist, humanistic theories, and who were already engaged in supervision, participated in the study. Employing narrative practices of co-inquiry to generate data, a series of supervision sessions were recorded, reviewed individually by supervisor and practitioner/participant and later discussed in reflective/research meetings. Using a critically reflexive approach to discourse analysis, selected data-texts were explored for moments of discursive dissonance and moments of movement in practice development and professional identity. Research findings highlighted the need for explicit supervision working agreements, theoretical transparency, and encouragement by counsellor training/education providers for students to make fuller use of supervision as a critical learning space. It identifies three processes that might inform supervision when theoretical orientations are non-aligned. These are: supervision as critical reflexivity, supervision as a socio-political conversation, and supervision as a storying practice.

text: Discursive dissonance: Critical reflexivity for counselling supervision When practitioners and supervisors do not share the same counselling language or theoretical orientation, how is shared meaning achieved and relational connection sustained in supervision? How are differences in theoretical orientation negotiated in supervision in ways that open space for collaborative, generative dialogue and critical reflection on the politics of practice? In response to these questions, this thesis presents a critical, reflexive practitioner-inquiry exploring the possibilities and limitations a social constructionist and narrative approach to supervision makes possible for students learning apolitical, humanistic approaches to counselling. Positioned in theoretical landscapes of social constructionism, feminist poststructuralism and Narrative Therapy, this study is a reflection-in-action of a supervisor’s practice. Central to the study’s argument is discursive positioning theory; the associated concepts of relational identity, authorship and agency; and the self as a storying subject. Two student counsellors and two newly qualified counsellors, whose practice was shaped by structuralist, humanistic theories, and who were already engaged in supervision, participated in the study. Employing narrative practices of co-inquiry to generate data, a series of supervision sessions were recorded, reviewed individually by supervisor and practitioner/participant and later discussed in reflective/research meetings. Using a critically reflexive approach to discourse analysis, selected data-texts were explored for moments of discursive dissonance and moments of movement in practice development and professional identity. Research findings highlighted the need for explicit supervision working agreements, theoretical transparency, and encouragement by counsellor training/education providers for students to make fuller use of supervision as a critical learning space. It identifies three processes that might inform supervision when theoretical orientations are non-aligned. These are: supervision as critical reflexivity, supervision as a socio-political conversation, and supervision as a storying practice.

year: 2011

title: Te Whakaruruhau Transition and Wellbeing programme: An implementation evaluation

authors: Robins, Kathryn

subjects: Maori

abstract: Based on the recognition that many women who come into refuge have few options
but to return to the sort of environment in which they have been abused, the
Transition and Wellbeing programme aims to provide medium to long term housing
for families as they re‐establish themselves in the community.
Data for the evaluation of the programme was collected from two main sources; the
women on the programme and key informants at Te Whakaruruhau. Five women,
two of whom are housed in transitional accommodation were interviewed
individually, while focus groups were conducted with middle and senior management
teams.
The completion of the interviews enabled the development of a programme logic,
which describes the ‘theory’ of the programme. The model details the activities or
what the programme does. These activities include linking women to programmes
and resources, providing practical support, addressing specific cultural needs and the
availability of quality advocates. These activities are built on foundational values, such
as, whanaungatanga, manaakitanga and wairuatanga. The programme is only made
possible with internal and external inputs. Of the external inputs, funding
contributions are considered vital to the functioning of the programme.
The women’s perspectives identified varying outcomes from their participation in the
programme. The logic model details the intended outcomes in the short, medium and
long‐term, reflecting personal, relational and community wellbeing. Short term
outcomes include improved communication, improved self‐esteem, improved
confidence and personal growth. Medium outcomes saw (re)engagement in training,
education and for some, (re)entry into the workforce. Long term outcomes related to
the establishment of a sustainable life style free from violence.
The participants did not see a need to modify the programme in any significant way.
Some did think that it could be usefully extended by adding to the existing activities a
hands on, artistic approach. Programme developers may consider more creative ways
in which to assess and measure the impact of the programme. Finally, it is suggested
that the programme could benefit from a more systemic assessment process to
determine whether women are “ready” to enter it.

text: Te Whakaruruhau Transition and Wellbeing programme: An implementation evaluation Based on the recognition that many women who come into refuge have few options
but to return to the sort of environment in which they have been abused, the
Transition and Wellbeing programme aims to provide medium to long term housing
for families as they re‐establish themselves in the community.
Data for the evaluation of the programme was collected from two main sources; the
women on the programme and key informants at Te Whakaruruhau. Five women,
two of whom are housed in transitional accommodation were interviewed
individually, while focus groups were conducted with middle and senior management
teams.
The completion of the interviews enabled the development of a programme logic,
which describes the ‘theory’ of the programme. The model details the activities or
what the programme does. These activities include linking women to programmes
and resources, providing practical support, addressing specific cultural needs and the
availability of quality advocates. These activities are built on foundational values, such
as, whanaungatanga, manaakitanga and wairuatanga. The programme is only made
possible with internal and external inputs. Of the external inputs, funding
contributions are considered vital to the functioning of the programme.
The women’s perspectives identified varying outcomes from their participation in the
programme. The logic model details the intended outcomes in the short, medium and
long‐term, reflecting personal, relational and community wellbeing. Short term
outcomes include improved communication, improved self‐esteem, improved
confidence and personal growth. Medium outcomes saw (re)engagement in training,
education and for some, (re)entry into the workforce. Long term outcomes related to
the establishment of a sustainable life style free from violence.
The participants did not see a need to modify the programme in any significant way.
Some did think that it could be usefully extended by adding to the existing activities a
hands on, artistic approach. Programme developers may consider more creative ways
in which to assess and measure the impact of the programme. Finally, it is suggested
that the programme could benefit from a more systemic assessment process to
determine whether women are “ready” to enter it.

year: 2008-06-26