title: Communicating the value of marine conservation using an ecosystem service matrix approach

authors: Geange, Shane

subjects: Science & Technology

abstract: Matrix approaches are useful for linking ecosystem services to habitats that underpin their delivery. Matrix applications in marine ecosystem services research have been primarily qualitative, focusing on 'habitat presence' without including other attributes that effect service potential. We developed an evidence-based matrix approach of Ecosystem Service Potential (ESP) for New Zealand benthic marine habitats, and used two marine reserves to demonstrate that integrating information on the spatial extent and quality of habitats improved ESP evaluation. The two case studies identified substantial spatio-temporal variability in ESP: within one reserve, specific ESP showed an approximately 1.5-fold increase in the 29 years following protection. A comparison of two reserves found that the spatial extent of habitats contributing to the medicinal resources and waste-water treatment were 5 and 53 times greater respectively in one relative to the other. Integrating habitat area and quality with the ESP matrix improves on previous marine matrix-based approaches, providing a better indication of service potential. The matrix approach helps to communicate the non-market value of supporting and regulating services and can be used by resource managers to identify and track the potential for benefits derived from benthic marine habitats within existing, or new, marine protected areas.

text: Communicating the value of marine conservation using an ecosystem service matrix approach Matrix approaches are useful for linking ecosystem services to habitats that underpin their delivery. Matrix applications in marine ecosystem services research have been primarily qualitative, focusing on 'habitat presence' without including other attributes that effect service potential. We developed an evidence-based matrix approach of Ecosystem Service Potential (ESP) for New Zealand benthic marine habitats, and used two marine reserves to demonstrate that integrating information on the spatial extent and quality of habitats improved ESP evaluation. The two case studies identified substantial spatio-temporal variability in ESP: within one reserve, specific ESP showed an approximately 1.5-fold increase in the 29 years following protection. A comparison of two reserves found that the spatial extent of habitats contributing to the medicinal resources and waste-water treatment were 5 and 53 times greater respectively in one relative to the other. Integrating habitat area and quality with the ESP matrix improves on previous marine matrix-based approaches, providing a better indication of service potential. The matrix approach helps to communicate the non-market value of supporting and regulating services and can be used by resource managers to identify and track the potential for benefits derived from benthic marine habitats within existing, or new, marine protected areas.

year: 2019

title: Alternative solutions for determining the spectral band weights for the subtractive resolution merge technique

authors: Ashraf, Muhammad Salman

subjects: data fusion

abstract: Data fusion using subtractive resolution merge (SRM) is limited because it currently requires fixed spectral band weights predetermined for particular sensors. This is problematic because there is an increasing availability of new and emerging sensors that have no predetermined band weights. There is also a need for fusion between sensors, which potentially requires a large number of sensor combinations and band weight calculations. This article demonstrates how the least sum of minimum absolute deviation (LAD, least absolute deviation) and ordinary least squares (OLS) regressions can calculate band weights for application in the SRM technique using QuickBird satellite and Vexcel aerial images. Both methods were effective in improving image details. The results of LAD and OLS are shown using qualitative and quantitative metrics and through unsupervised classification of freshwater habitat. OLS and LAD produce similar results; however, OLS is computationally simpler and easier to automate. The ability of the user to calculate their own scene specific band weights eliminates the dependence on predetermined sensor band weights. This research concludes that OLS band weight calculations should be integrated into the SRM technique to diversify its application.

text: Alternative solutions for determining the spectral band weights for the subtractive resolution merge technique Data fusion using subtractive resolution merge (SRM) is limited because it currently requires fixed spectral band weights predetermined for particular sensors. This is problematic because there is an increasing availability of new and emerging sensors that have no predetermined band weights. There is also a need for fusion between sensors, which potentially requires a large number of sensor combinations and band weight calculations. This article demonstrates how the least sum of minimum absolute deviation (LAD, least absolute deviation) and ordinary least squares (OLS) regressions can calculate band weights for application in the SRM technique using QuickBird satellite and Vexcel aerial images. Both methods were effective in improving image details. The results of LAD and OLS are shown using qualitative and quantitative metrics and through unsupervised classification of freshwater habitat. OLS and LAD produce similar results; however, OLS is computationally simpler and easier to automate. The ability of the user to calculate their own scene specific band weights eliminates the dependence on predetermined sensor band weights. This research concludes that OLS band weight calculations should be integrated into the SRM technique to diversify its application.

year: 2011

title: The New Zealand Wars Documentary Series: Discursive Struggle and Cultural Memory.

authors: Perrott, Lisa

subjects: Television Documentary

abstract: The 1998 television broadcast of The New Zealand Wars documentary series was a significant public event, which had a major impact on a broad range of communities and individuals in Aotearoa New Zealand. This popular television history engaged with issues of historical veracity, race, culture and nationhood and challenged previously dominant discourses associated with these concepts. In doing so, it provoked heated debate, and a re-imagining of 'nation', and also opened up spaces for alternative ways of engaging with historical narrative. 

Informed by post-colonialism, cultural studies and cultural memory, this thesis explores the discursive and affective role of The New Zealand Wars, as it has operated within the turbulent climate of 1990s New Zealand cultural relations. This catalytic function is described in this thesis as a phenomenon of a television series shaped by, whilst also intervening in, processes of cultural colonisation and decolonisation. 

While both of these processes involve the transmission of discourse via cultural forms, the act of cultural decolonisation requires, in addition, the convergence of a number of agents (people and communities, discursive and memory resources) and circumstances, within particular contextual conditions. Such a convergence provided the conditions for the discursive synthesis, which shaped the production, construction and reception of this series. 

The role of audio-visual media (and specifically television documentary) in transmitting cultural memory is significant as it enables the flow of memory through channels or forms (such as visual, oral and aural traditions) that can bring about new perspectives and critical reflections upon colonial discourse and dominant concepts of nation and culture. In addition to these social and intellectual processes of audience engagement, this thesis argues that experiential and affective dimensions of cultural memory can (in these specific circumstances) open up radical spaces, offering the potential for generating awareness and sparking political action. 

These issues are explored through a tripartite analysis of the production context, construction and reception of The New Zealand Wars series. The integration of these three phases of analysis has generated a number of insights into the potential of audio-visual forms, including their producers and audiences, to participate in the negotiation of, and resistance to, colonial discourse. Such insights serve to challenge taken-for-granted constructions of nation and history, and suggest the increasing relevance of alternative concepts such as community-building and cultural memory. Ultimately, this thesis argues that television documentary can serve as a prime site for the articulation of these concepts. The New Zealand Wars serves as a case study, which demonstrates both the potential of this site, and the significance of the social-historical and cultural context in framing this series.

text: The New Zealand Wars Documentary Series: Discursive Struggle and Cultural Memory. The 1998 television broadcast of The New Zealand Wars documentary series was a significant public event, which had a major impact on a broad range of communities and individuals in Aotearoa New Zealand. This popular television history engaged with issues of historical veracity, race, culture and nationhood and challenged previously dominant discourses associated with these concepts. In doing so, it provoked heated debate, and a re-imagining of 'nation', and also opened up spaces for alternative ways of engaging with historical narrative. 

Informed by post-colonialism, cultural studies and cultural memory, this thesis explores the discursive and affective role of The New Zealand Wars, as it has operated within the turbulent climate of 1990s New Zealand cultural relations. This catalytic function is described in this thesis as a phenomenon of a television series shaped by, whilst also intervening in, processes of cultural colonisation and decolonisation. 

While both of these processes involve the transmission of discourse via cultural forms, the act of cultural decolonisation requires, in addition, the convergence of a number of agents (people and communities, discursive and memory resources) and circumstances, within particular contextual conditions. Such a convergence provided the conditions for the discursive synthesis, which shaped the production, construction and reception of this series. 

The role of audio-visual media (and specifically television documentary) in transmitting cultural memory is significant as it enables the flow of memory through channels or forms (such as visual, oral and aural traditions) that can bring about new perspectives and critical reflections upon colonial discourse and dominant concepts of nation and culture. In addition to these social and intellectual processes of audience engagement, this thesis argues that experiential and affective dimensions of cultural memory can (in these specific circumstances) open up radical spaces, offering the potential for generating awareness and sparking political action. 

These issues are explored through a tripartite analysis of the production context, construction and reception of The New Zealand Wars series. The integration of these three phases of analysis has generated a number of insights into the potential of audio-visual forms, including their producers and audiences, to participate in the negotiation of, and resistance to, colonial discourse. Such insights serve to challenge taken-for-granted constructions of nation and history, and suggest the increasing relevance of alternative concepts such as community-building and cultural memory. Ultimately, this thesis argues that television documentary can serve as a prime site for the articulation of these concepts. The New Zealand Wars serves as a case study, which demonstrates both the potential of this site, and the significance of the social-historical and cultural context in framing this series.

year: 2007