title: Consumer adoption of sustainable shellfish in China: Effects of psychological factors and segmentation

authors: Wang, Ou

subjects: Science & Technology

abstract: China's large and increasing demand for aquatic products has had a significant effect on the sustainability of global water ecosystems. This study explored the effects of psychological factors and segmentation on Chinese consumers' adoption of sustainable shellfish. Data were collected by using a web-based questionnaire in three Chinese cities: Beijing, Guangzhou and Chongqing (with a total sample size of 643). Descriptive analysis, cluster analysis, confirmatory factor analysis and structural equation modeling were used for data analysis. Chinese consumers' subjective norms, personal norms, attitudes toward shellfish and attitudes toward water environment were significant psychological factors influencing their purchase intentions toward sustainable shellfish. Two consumer segments were identified: Sustainable-shellfish-pioneer (47.28%) and Sustainable-shellfish-conservative (52.72%). These two segments had significant differences in the purchase intentions for specific sustainable shellfish species, the effects of psychological factors on purchase intentions toward shellfish, and socio-demographic distributions (including income, occupation and marriage status). These first hand findings can help global shellfish producers, marketers and policy-makers to develop appropriate sustainable development strategies and policies for their shellfish resources when exploiting the huge market.

text: Consumer adoption of sustainable shellfish in China: Effects of psychological factors and segmentation China's large and increasing demand for aquatic products has had a significant effect on the sustainability of global water ecosystems. This study explored the effects of psychological factors and segmentation on Chinese consumers' adoption of sustainable shellfish. Data were collected by using a web-based questionnaire in three Chinese cities: Beijing, Guangzhou and Chongqing (with a total sample size of 643). Descriptive analysis, cluster analysis, confirmatory factor analysis and structural equation modeling were used for data analysis. Chinese consumers' subjective norms, personal norms, attitudes toward shellfish and attitudes toward water environment were significant psychological factors influencing their purchase intentions toward sustainable shellfish. Two consumer segments were identified: Sustainable-shellfish-pioneer (47.28%) and Sustainable-shellfish-conservative (52.72%). These two segments had significant differences in the purchase intentions for specific sustainable shellfish species, the effects of psychological factors on purchase intentions toward shellfish, and socio-demographic distributions (including income, occupation and marriage status). These first hand findings can help global shellfish producers, marketers and policy-makers to develop appropriate sustainable development strategies and policies for their shellfish resources when exploiting the huge market.

year: 2019

title: Literacy research methodology that is up to the challenge

authors: Smyth, John

subjects: multi-facetedmethodology

abstract: This paper outlines the methodological dimensions of the secondary literacy research evaluation that is the focus of this special issue-the New Zealand-based Secondary Schools' Literacy Initiative (SSLI). We argue that these methodological dimensions are an example of the type of contextualised and critical research that might be usefully applied in exploring literacy across the curriculum in other national contexts. A particular concern addressed in the paper is the need to develop a contextualised, rich description of literacy practices in schools, while also addressing a wider policy climate, which is often preoccupied with issues of literacy achievement and, particularly, often-entrenched differential achievement for students across class and ethnicity lines. To achieve this, the researchers adopted a quasi-ethnographic, multi-locale, mixed-methods approach intended to enhance the robustness of the research design and the validity of the results.

text: Literacy research methodology that is up to the challenge This paper outlines the methodological dimensions of the secondary literacy research evaluation that is the focus of this special issue-the New Zealand-based Secondary Schools' Literacy Initiative (SSLI). We argue that these methodological dimensions are an example of the type of contextualised and critical research that might be usefully applied in exploring literacy across the curriculum in other national contexts. A particular concern addressed in the paper is the need to develop a contextualised, rich description of literacy practices in schools, while also addressing a wider policy climate, which is often preoccupied with issues of literacy achievement and, particularly, often-entrenched differential achievement for students across class and ethnicity lines. To achieve this, the researchers adopted a quasi-ethnographic, multi-locale, mixed-methods approach intended to enhance the robustness of the research design and the validity of the results.

year: 2007

title: He Piko, He Repo: Environmental DNA as a biomonitoring tool for wetland restoration

authors: Bird, Starsha

subjects: colonisation

abstract: Wetlands are biodiversity hotspots, harbouring distinctive species while providing numerous ecosystem services. Unfortunately, throughout human civilisation, they have been systematically degraded, resulting in a dramatic global loss in wetland extent, the establishment of invasive species and the extinction of many natives and, in Aotearoa New Zealand, impediment of the special connection Māori share with their repo (wetlands). Monitoring wetland biodiversity to take appropriate restorative action and minimise further degradation is imperative, particularly in the face of climate change. Environmental DNA (eDNA; genetic material released by organisms into the environment) is an increasingly popular non-invasive biomonitoring method that provides information about the presence or potential absence of species inhabiting a given ecosystem, but has yet to be optimised for wetland environments. My thesis aimed to address the consequences of colonisation on the relationship between Māori and their wetlands, and to explore the value eDNA holds for wetland biomonitoring. The first analysis (Chapter 2) delved into the past (post-European settlement; 1840s), the present (2023), and the future (2073) of Opuatia Wetland (Waikato, Aotearoa New Zealand) through a series of interviews with three individuals who whakapapa to (are connected with) Opuatia Wetland and its surroundings. I found that Opuatia Wetland once flourished with native biodiversity, and kai (food) was readily available. However, land confiscation by European settlers marked the downfall of this once productive and connected catchment such that it is presently in a fairly degraded state, dominated by exotic species, with Māori feeling disconnected from their whenua (land). Considering the future, the interviewees envisioned a revived abundance of native species and desire for restoration efforts to be facilitated by both mātauranga Māori (Māori knowledge) and science. The second analysis (Chapter 3) examined a publicly available eDNA database to retrieve data from 26 wetland sites across Aotearoa New Zealand to understand taxonomic diversity patterns. Here, I showed that DNA sequence composition varied across the motu (country), illustrating that varying environmental conditions among wetland types influences biodiversity. Notably, most sites were dominated by >50% exotic species. These findings highlight the value of publicly shared data for generating new insights, and the need for resource allocations to tackle the persistence of exotic species in wetland ecosystems. The third analysis (Chapter 4) focused on analysing biodiversity dynamics at a single wetland and tested various eDNA sampling techniques. I sampled four spatially distant sites across Opuatia Wetland at three time points during an austral spring and simultaneously obtained data from conventional taxonomic surveys, tested three different filter sizes, and assessed DNA degradation rates using foreign DNA. I found significant differences in biodiversity across time and space, and when using different eDNA collection filters. Foreign DNA persisted for up to one week post-release within a 10 m radius, and combining conventional and eDNA methods provided a more comprehensive overview of biodiversity patterns. These findings collectively showcased key changes in biodiversity, even over short spatial and temporal scales, and identified parameters to consider for wetland biodiversity monitoring and associated data interpretation. It is only a matter of time until the impacts of climate change and invasive species take firmer hold of Aotearoa New Zealand's distinctive and fragile environment. Undoubtedly, eDNA can be part of the solution to mitigate these challenges, owing to its versatility across ecosystem types, capacity to extend to various substrates, and accessibility for researchers and citizen scientists alike. As eDNA methods continue to improve and become integrated into ongoing biomonitoring schemes, building equitable and empowering relationships between Māori and researchers/government bodies will best ensure that Aotearoa New Zealand repo and other environments are maintained and conserved for future generations.

text: He Piko, He Repo: Environmental DNA as a biomonitoring tool for wetland restoration Wetlands are biodiversity hotspots, harbouring distinctive species while providing numerous ecosystem services. Unfortunately, throughout human civilisation, they have been systematically degraded, resulting in a dramatic global loss in wetland extent, the establishment of invasive species and the extinction of many natives and, in Aotearoa New Zealand, impediment of the special connection Māori share with their repo (wetlands). Monitoring wetland biodiversity to take appropriate restorative action and minimise further degradation is imperative, particularly in the face of climate change. Environmental DNA (eDNA; genetic material released by organisms into the environment) is an increasingly popular non-invasive biomonitoring method that provides information about the presence or potential absence of species inhabiting a given ecosystem, but has yet to be optimised for wetland environments. My thesis aimed to address the consequences of colonisation on the relationship between Māori and their wetlands, and to explore the value eDNA holds for wetland biomonitoring. The first analysis (Chapter 2) delved into the past (post-European settlement; 1840s), the present (2023), and the future (2073) of Opuatia Wetland (Waikato, Aotearoa New Zealand) through a series of interviews with three individuals who whakapapa to (are connected with) Opuatia Wetland and its surroundings. I found that Opuatia Wetland once flourished with native biodiversity, and kai (food) was readily available. However, land confiscation by European settlers marked the downfall of this once productive and connected catchment such that it is presently in a fairly degraded state, dominated by exotic species, with Māori feeling disconnected from their whenua (land). Considering the future, the interviewees envisioned a revived abundance of native species and desire for restoration efforts to be facilitated by both mātauranga Māori (Māori knowledge) and science. The second analysis (Chapter 3) examined a publicly available eDNA database to retrieve data from 26 wetland sites across Aotearoa New Zealand to understand taxonomic diversity patterns. Here, I showed that DNA sequence composition varied across the motu (country), illustrating that varying environmental conditions among wetland types influences biodiversity. Notably, most sites were dominated by >50% exotic species. These findings highlight the value of publicly shared data for generating new insights, and the need for resource allocations to tackle the persistence of exotic species in wetland ecosystems. The third analysis (Chapter 4) focused on analysing biodiversity dynamics at a single wetland and tested various eDNA sampling techniques. I sampled four spatially distant sites across Opuatia Wetland at three time points during an austral spring and simultaneously obtained data from conventional taxonomic surveys, tested three different filter sizes, and assessed DNA degradation rates using foreign DNA. I found significant differences in biodiversity across time and space, and when using different eDNA collection filters. Foreign DNA persisted for up to one week post-release within a 10 m radius, and combining conventional and eDNA methods provided a more comprehensive overview of biodiversity patterns. These findings collectively showcased key changes in biodiversity, even over short spatial and temporal scales, and identified parameters to consider for wetland biodiversity monitoring and associated data interpretation. It is only a matter of time until the impacts of climate change and invasive species take firmer hold of Aotearoa New Zealand's distinctive and fragile environment. Undoubtedly, eDNA can be part of the solution to mitigate these challenges, owing to its versatility across ecosystem types, capacity to extend to various substrates, and accessibility for researchers and citizen scientists alike. As eDNA methods continue to improve and become integrated into ongoing biomonitoring schemes, building equitable and empowering relationships between Māori and researchers/government bodies will best ensure that Aotearoa New Zealand repo and other environments are maintained and conserved for future generations.

year: 2023