title: Environmental cues for koi carp (Cyprinus carpio) spawning aggregations and bottleneck locations near Huntly, New Zealand

authors: Garrett-Walker, Jeremy

abstract: Koi carp (Cyprinus carpio) were monitored from August to December 2014 near Huntly, in the north Waikato, to document migratory and spawning behaviour. Monitoring involved a combination of daily water level and temperature logging, as well as semi-weekly observations of koi carp numbers and spawning activity. These data were used to examine the influence of water level and temperature on migration and spawning behaviour. No correlation between water level and koi carp migration was found; however, the monitoring period followed two years of drought in the region resulting in unusually low water levels for the time of year. In contrast, koi carp migration and spawning behaviour appeared to be related to water temperature, with spawning consistently observed after water temperatures were stable at 15°C. This temperature spawning threshold is lower than previously observed for northern New Zealand, but is within the range identified in overseas literature. It is recommended that future studies investigate a greater range of seasonal and climatic variations, and address the potential for increased activity at night when fish may be more active.

text: Environmental cues for koi carp (Cyprinus carpio) spawning aggregations and bottleneck locations near Huntly, New Zealand Koi carp (Cyprinus carpio) were monitored from August to December 2014 near Huntly, in the north Waikato, to document migratory and spawning behaviour. Monitoring involved a combination of daily water level and temperature logging, as well as semi-weekly observations of koi carp numbers and spawning activity. These data were used to examine the influence of water level and temperature on migration and spawning behaviour. No correlation between water level and koi carp migration was found; however, the monitoring period followed two years of drought in the region resulting in unusually low water levels for the time of year. In contrast, koi carp migration and spawning behaviour appeared to be related to water temperature, with spawning consistently observed after water temperatures were stable at 15°C. This temperature spawning threshold is lower than previously observed for northern New Zealand, but is within the range identified in overseas literature. It is recommended that future studies investigate a greater range of seasonal and climatic variations, and address the potential for increased activity at night when fish may be more active.

year: 2015

title: Classification of non-indigenous species based on their impacts: Considerations for application in marine management

authors: Ojaveer, Henn

abstract: Assessment of the ecological and economic/societal impacts of the introduction of non-indigenous species (NIS) is one of the primary focus areas of bioinvasion science in terrestrial and aquatic environments, and is considered essential to management. A classification system of NIS, based on the magnitude of their environmental impacts, was recently proposed to assist management. Here, we consider the potential application of this classification scheme to the marine environment, and offer a complementary framework focussing on value sets in order to explicitly address marine management concerns. Since existing data on marine NIS impacts are scarce and successful marine removals are rare, we propose that management of marine NIS adopt a precautionary approach, which not only would emphasise preventing new incursions through pre-border and at-border controls but also should influence the categorisation of impacts. The study of marine invasion impacts requires urgent attention and significant investment, since we lack the luxury of waiting for the knowledge base to be acquired before the window of opportunity closes for feasible management.

text: Classification of non-indigenous species based on their impacts: Considerations for application in marine management Assessment of the ecological and economic/societal impacts of the introduction of non-indigenous species (NIS) is one of the primary focus areas of bioinvasion science in terrestrial and aquatic environments, and is considered essential to management. A classification system of NIS, based on the magnitude of their environmental impacts, was recently proposed to assist management. Here, we consider the potential application of this classification scheme to the marine environment, and offer a complementary framework focussing on value sets in order to explicitly address marine management concerns. Since existing data on marine NIS impacts are scarce and successful marine removals are rare, we propose that management of marine NIS adopt a precautionary approach, which not only would emphasise preventing new incursions through pre-border and at-border controls but also should influence the categorisation of impacts. The study of marine invasion impacts requires urgent attention and significant investment, since we lack the luxury of waiting for the knowledge base to be acquired before the window of opportunity closes for feasible management.

year: 2015

title: Whāingaroa/Raglan and positive youth development - Community-driven youth support in Whāingaroa: A case study of the Whāingaroa Youth Work Collective

authors: Semeraro, Gianluca

abstract: This research explores the development and impact of community-driven youth support in Whāingaroa, a rural community in Aotearoa/New Zealand, through an in-depth examination of a local youth work collective. By employing a qualitative, participatory research methodology, the study investigates the complex dynamics of youth empowerment, community engagement, and cultural responsiveness within a unique local context.

The study traces the evolution of the Whāingaroa Youth Work Collective (WYWC) from its inception to its status as a structured community organization. Data collection spanned two years, encompassing six WYWC collective meetings and three focus groups with key collective members. Through ethnographic observations and collaborative research methods, the study illuminates the processes of youth development and community support emerging from grassroots, volunteer-driven initiatives. Thematic analysis was employed to analyse the data, which was categorized into two primary themes: (1) the collective's purpose and operational methodology, and (2) necessary future steps to address gaps in local youth support. These themes were analysed in relation to two research questions:

•	How can Whāingaroa/Raglan services support youth at a community-based level?
•	What initiatives could be implemented to foster positive youth development in the future?

The findings are presented in two main sections. The first examines the collective's strategy, operational framework and current initiatives demonstrating the effectiveness of locally-based youth support. The second explores the collective's aspirations for future initiatives, specifically focusing on two key proposals: establishing a full-time youth connector position and developing a community youth hub.

 Key findings demonstrate the transformative potential of volunteer-driven, culturally responsive youth support strategies. The research highlights the importance of contextual understanding, community ownership, and holistic approaches to youth development. Particularly significant is the model's ability to navigate the bicultural landscape of Aotearoa, providing a nuanced approach that respects both indigenous and contemporary cultural frameworks.

Theoretically grounded in Positive Youth Development (PYD) frameworks and indigenous cultural perspectives, the research bridges Western psychological approaches with local cultural understanding. The study reveals how a community-centric model of youth support can effectively address the complex needs of rural youth, emphasizing cultural identity, collective empowerment, and local knowledge.

The study contributes to broader discussions on youth support, community development, and cultural resilience. It challenges traditional, standardized intervention models by showcasing the effectiveness of locally embedded, flexible support strategies. The research provides valuable insights for community organizations, policymakers, educational institutions, and social service providers seeking innovative approaches to youth engagement.
Further, the findings offer a replicable framework for understanding and supporting youth development in rural contexts, with broader implications for community support strategies that prioritize local knowledge, cultural responsiveness, and collective empowerment.

Ultimately, the research presents a compelling argument for understanding youth development as a collaborative, contextually embedded process. It demonstrates that meaningful community support emerges from within, driven by local aspirations, cultural understanding, and collective investment in young people's potential.

text: Whāingaroa/Raglan and positive youth development - Community-driven youth support in Whāingaroa: A case study of the Whāingaroa Youth Work Collective This research explores the development and impact of community-driven youth support in Whāingaroa, a rural community in Aotearoa/New Zealand, through an in-depth examination of a local youth work collective. By employing a qualitative, participatory research methodology, the study investigates the complex dynamics of youth empowerment, community engagement, and cultural responsiveness within a unique local context.

The study traces the evolution of the Whāingaroa Youth Work Collective (WYWC) from its inception to its status as a structured community organization. Data collection spanned two years, encompassing six WYWC collective meetings and three focus groups with key collective members. Through ethnographic observations and collaborative research methods, the study illuminates the processes of youth development and community support emerging from grassroots, volunteer-driven initiatives. Thematic analysis was employed to analyse the data, which was categorized into two primary themes: (1) the collective's purpose and operational methodology, and (2) necessary future steps to address gaps in local youth support. These themes were analysed in relation to two research questions:

•	How can Whāingaroa/Raglan services support youth at a community-based level?
•	What initiatives could be implemented to foster positive youth development in the future?

The findings are presented in two main sections. The first examines the collective's strategy, operational framework and current initiatives demonstrating the effectiveness of locally-based youth support. The second explores the collective's aspirations for future initiatives, specifically focusing on two key proposals: establishing a full-time youth connector position and developing a community youth hub.

 Key findings demonstrate the transformative potential of volunteer-driven, culturally responsive youth support strategies. The research highlights the importance of contextual understanding, community ownership, and holistic approaches to youth development. Particularly significant is the model's ability to navigate the bicultural landscape of Aotearoa, providing a nuanced approach that respects both indigenous and contemporary cultural frameworks.

Theoretically grounded in Positive Youth Development (PYD) frameworks and indigenous cultural perspectives, the research bridges Western psychological approaches with local cultural understanding. The study reveals how a community-centric model of youth support can effectively address the complex needs of rural youth, emphasizing cultural identity, collective empowerment, and local knowledge.

The study contributes to broader discussions on youth support, community development, and cultural resilience. It challenges traditional, standardized intervention models by showcasing the effectiveness of locally embedded, flexible support strategies. The research provides valuable insights for community organizations, policymakers, educational institutions, and social service providers seeking innovative approaches to youth engagement.
Further, the findings offer a replicable framework for understanding and supporting youth development in rural contexts, with broader implications for community support strategies that prioritize local knowledge, cultural responsiveness, and collective empowerment.

Ultimately, the research presents a compelling argument for understanding youth development as a collaborative, contextually embedded process. It demonstrates that meaningful community support emerges from within, driven by local aspirations, cultural understanding, and collective investment in young people's potential.

year: 2025