title: A field test of forest canopy structure measurements with the CanopyCapture smartphone application.

authors: Lusk, Christopher H.

subjects: Canopy openess

abstract: Background: Several smartphone applications have been developed for the purpose of low-cost and convenient assessments of vegetation canopy structure and understorey illumination. Like standard hemispherical photography, most of these applications require user decisions about image processing, posing challenges for repeatability of measurements. Here I report a test of CanopyCapture, an application that instantaneously estimates percentage canopy gap fraction without any input from the user, and has the added advantage of an intuitive levelling mechanism. Methods: Gap fraction estimates by CanopyCapture were compared with gap fraction values computed by the LAI-2200C Canopy Analyzer, in two contrasting evergreen temperate forests in New Zealand: an even-aged southern beech (Nothofagus) stand and an old-growth podocarp/broadleaf forest. These comparisons were repeated using a wide-angle adapter to enhance the smartphone camera's field of view from 45 to 65°. I also asked if CanopyCapture results depended on sky condition (sunny vs. overcast) and on the type of smartphone used. Results: CanopyCapture output was significantly correlated with gap fraction computed by the LAI-2200C (R2 = 0.39), and use of the wide-angle adapter lifted this value to 0.56. However, CanopyCapture output was not significantly correlated with LAI-2200C output in the even-aged Nothofagus stand, where there was less spatial variation in canopy structure. Despite being much less sensitive to variation in gap fraction than the LAI-2200C, CanopyCapture was nevertheless able to detect differences in average gap fraction between the two forests studied. CanopyCapture results beneath intact canopies were not significantly affected by sky condition, but reflection of direct light off tree trunks in sunny weather caused slight overestimation of gap fraction beneath broken canopies and gaps. Uneven or patchy cloud cover can also cause erroneous readings beneath large canopy openings. Three different models of smartphone gave different results. Conclusions: CanopyCapture offers a rapid and repeatable proxy for comparisons of average canopy gap fraction in multiple stands/forests, provided large sample sizes are used. Measurement under even overcast skies is recommended, and studies involving multiple operators will need to standardize smartphones to ensure comparability of results. Although wide-angle adapters can improve performance, CanopyCapture's low sensitivity prevents high-resolution comparisons of the light environments of individual understorey plants within a stand.

text: A field test of forest canopy structure measurements with the CanopyCapture smartphone application. Background: Several smartphone applications have been developed for the purpose of low-cost and convenient assessments of vegetation canopy structure and understorey illumination. Like standard hemispherical photography, most of these applications require user decisions about image processing, posing challenges for repeatability of measurements. Here I report a test of CanopyCapture, an application that instantaneously estimates percentage canopy gap fraction without any input from the user, and has the added advantage of an intuitive levelling mechanism. Methods: Gap fraction estimates by CanopyCapture were compared with gap fraction values computed by the LAI-2200C Canopy Analyzer, in two contrasting evergreen temperate forests in New Zealand: an even-aged southern beech (Nothofagus) stand and an old-growth podocarp/broadleaf forest. These comparisons were repeated using a wide-angle adapter to enhance the smartphone camera's field of view from 45 to 65°. I also asked if CanopyCapture results depended on sky condition (sunny vs. overcast) and on the type of smartphone used. Results: CanopyCapture output was significantly correlated with gap fraction computed by the LAI-2200C (R2 = 0.39), and use of the wide-angle adapter lifted this value to 0.56. However, CanopyCapture output was not significantly correlated with LAI-2200C output in the even-aged Nothofagus stand, where there was less spatial variation in canopy structure. Despite being much less sensitive to variation in gap fraction than the LAI-2200C, CanopyCapture was nevertheless able to detect differences in average gap fraction between the two forests studied. CanopyCapture results beneath intact canopies were not significantly affected by sky condition, but reflection of direct light off tree trunks in sunny weather caused slight overestimation of gap fraction beneath broken canopies and gaps. Uneven or patchy cloud cover can also cause erroneous readings beneath large canopy openings. Three different models of smartphone gave different results. Conclusions: CanopyCapture offers a rapid and repeatable proxy for comparisons of average canopy gap fraction in multiple stands/forests, provided large sample sizes are used. Measurement under even overcast skies is recommended, and studies involving multiple operators will need to standardize smartphones to ensure comparability of results. Although wide-angle adapters can improve performance, CanopyCapture's low sensitivity prevents high-resolution comparisons of the light environments of individual understorey plants within a stand.

year: 2022

title: The ethics of fiction: Representations of New Zealand history in the poetry of Chris Tse and Airini Beautrais, and how an author's sense of self affects the story

authors: Mead, Olivia Frances

subjects: New Zealand poetry

abstract: The landscape of contemporary literature and film is saturated with interpretations of recorded histories and events. We have passed them down through generations—orally at first, written recordings when we had the comprehension and means to do so—each representation changed a little bit more by the time it reached us. But contemporary literature also draws from recent history, helping both reader and author to understand the contexts in which they exist. The resulting texts inform, and in turn are informed by, our cultures, ethnicities, religions, values, geography—all contributors to the sense of self with which we interpret fact and fiction.

This thesis looks at the representations of events within New Zealand history found in the poetry of Chris Tse and Airini Beautrais, considering these events through the specific lens of each author’s culture and identity. From the murder of Joe Kum Yung in 1905 and the death of anarchist Neil Roberts in 1982 to the multi-layered history of the Whanganui region, each collection illustrates how an author’s sense of self can alter history. Tse’s How to be Dead in a Year of Snakes and Beautrais’ Dear Neil Roberts and Flow: Whanganui River Poems are examples of the impact of an author’s voice on historical fact, and reinforce a need for accuracy in the poetry genre in the context of New Zealand history and literature. As poet James Brown asks: is verse the future of history?

text: The ethics of fiction: Representations of New Zealand history in the poetry of Chris Tse and Airini Beautrais, and how an author's sense of self affects the story The landscape of contemporary literature and film is saturated with interpretations of recorded histories and events. We have passed them down through generations—orally at first, written recordings when we had the comprehension and means to do so—each representation changed a little bit more by the time it reached us. But contemporary literature also draws from recent history, helping both reader and author to understand the contexts in which they exist. The resulting texts inform, and in turn are informed by, our cultures, ethnicities, religions, values, geography—all contributors to the sense of self with which we interpret fact and fiction.

This thesis looks at the representations of events within New Zealand history found in the poetry of Chris Tse and Airini Beautrais, considering these events through the specific lens of each author’s culture and identity. From the murder of Joe Kum Yung in 1905 and the death of anarchist Neil Roberts in 1982 to the multi-layered history of the Whanganui region, each collection illustrates how an author’s sense of self can alter history. Tse’s How to be Dead in a Year of Snakes and Beautrais’ Dear Neil Roberts and Flow: Whanganui River Poems are examples of the impact of an author’s voice on historical fact, and reinforce a need for accuracy in the poetry genre in the context of New Zealand history and literature. As poet James Brown asks: is verse the future of history?

year: 2020

title: The Treaty, tikanga Māori, ecosystem-based management, mainstream law and power sharing for environmental integrity in Aotearoa New Zealand – possible ways forward

authors: Joseph, Robert

subjects: Maori, ecosystem-based management, coastal marine estate, sustainability, Treaty of Waitangi

abstract: Ecosystem-based management (EBM) has become an appropriate international response for addressing alarming global environmental degradation trends. EBM is designed and executed as an adaptive, learning-based process that applies the following common international principles:
•	the connections and relationships within an ecosystem;
•	the cumulative impacts that affect marine welfare; 
•	focus on maintaining the natural structure and function of ecosystems and their productivity;
•	incorporate human use and values of ecosystems in managing the resource;
•	recognise that ecosystems are dynamic and constantly changing;
•	are based on a shared vision of all key participants; and
•	are based on scientific knowledge, adopted by continual learning and monitoring.

The New Zealand Sustainable Seas National Science Challenge agrees with these EBM principles but has adapted them into an Aotearoa New Zealand theoretical approach that fundamentally acknowledges mātauranga and tikanga Māori law hence the following Aotearoa New Zealand EBM principles:
•	a co-governance and co-design structure that recognises the Māori constitutional relationship and mana whenua at all levels (whānau, hapū, iwi), together with the guiding principles of mauri, whakapapa, kaitiakitanga, mātauranga-a-iwi and mātauranga-a-hapū;
•	is place and time-specific, recognising/understanding the ecosystem as a whole in all its ecological complexities and connectedness and addressing cumulative and multiple stressors;
•	acknowledges humans as ecosystem components with multiple values;
•	views long-term sustainability as a fundamental value, in particular maintaining values and uses for future generations;
•	includes collaborative and participatory management throughout the whole process, considering all values and involving all interested parties from agencies and iwi to industries, whānau, hapū and local communities;
•	has clear goals and objectives based on knowledge; and
•	includes adaptive management, appropriate monitoring and acknowledgement of uncertainty.

The report focuses on analysing EBM through the incorporation of mātauranga and tikanga Māori and power sharing through Treaty partnerships over the marine and coastal estate.

text: The Treaty, tikanga Māori, ecosystem-based management, mainstream law and power sharing for environmental integrity in Aotearoa New Zealand – possible ways forward Ecosystem-based management (EBM) has become an appropriate international response for addressing alarming global environmental degradation trends. EBM is designed and executed as an adaptive, learning-based process that applies the following common international principles:
•	the connections and relationships within an ecosystem;
•	the cumulative impacts that affect marine welfare; 
•	focus on maintaining the natural structure and function of ecosystems and their productivity;
•	incorporate human use and values of ecosystems in managing the resource;
•	recognise that ecosystems are dynamic and constantly changing;
•	are based on a shared vision of all key participants; and
•	are based on scientific knowledge, adopted by continual learning and monitoring.

The New Zealand Sustainable Seas National Science Challenge agrees with these EBM principles but has adapted them into an Aotearoa New Zealand theoretical approach that fundamentally acknowledges mātauranga and tikanga Māori law hence the following Aotearoa New Zealand EBM principles:
•	a co-governance and co-design structure that recognises the Māori constitutional relationship and mana whenua at all levels (whānau, hapū, iwi), together with the guiding principles of mauri, whakapapa, kaitiakitanga, mātauranga-a-iwi and mātauranga-a-hapū;
•	is place and time-specific, recognising/understanding the ecosystem as a whole in all its ecological complexities and connectedness and addressing cumulative and multiple stressors;
•	acknowledges humans as ecosystem components with multiple values;
•	views long-term sustainability as a fundamental value, in particular maintaining values and uses for future generations;
•	includes collaborative and participatory management throughout the whole process, considering all values and involving all interested parties from agencies and iwi to industries, whānau, hapū and local communities;
•	has clear goals and objectives based on knowledge; and
•	includes adaptive management, appropriate monitoring and acknowledgement of uncertainty.

The report focuses on analysing EBM through the incorporation of mātauranga and tikanga Māori and power sharing through Treaty partnerships over the marine and coastal estate.

year: 2019-07-30