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Research papers, Lincoln University

Globally, the maximum elevations at which treelines are observed to occur coincide with a 6.4 °C soil isotherm. However, when observed at finer scales, treelines display a considerable degree of spatial complexity in their patterns across the landscape and are often found occurring at lower elevations than expected relative to the global-scale pattern. There is still a lack of understanding of how the abiotic environment imposes constraints on treeline patterns, the scales at which different effects are acting, and how these effects vary over large spatial extents. In this thesis, I examined abrupt Nothofagus treelines across seven degrees of latitude in New Zealand in order to investigate two broad questions: (1) What is the nature and extent of spatial variability in Nothofagus treelines across the country? (2) How is this variation associated with abiotic variation at different spatial scales? A range of GIS, statistical, and atmospheric modelling methods were applied to address these two questions. First, I characterised Nothofagus treeline patterns at a 15x15km scale across New Zealand using a set of seven, GIS-derived, quantitative metrics that describe different aspects of treeline position, shape, spatial configuration, and relationships with adjacent vegetation. Multivariate clustering of these metrics revealed distinct treeline types that showed strong spatial aggregation across the country. This suggests a strong spatial structuring of the abiotic environment which, in turn, drives treeline patterns. About half of the multivariate treeline metric variation was explained by patterns of climate, substrate, topographic and disturbance variability; on the whole, climatic and disturbance factors were most influential. Second, I developed a conceptual model that describes how treeline elevation may vary at different scales according to three categories of effects: thermal modifying effects, physiological stressors, and disturbance effects. I tested the relevance of this model for Nothofagus treelines by investigating treeline elevation variation at five nested scales (regional to local) using a hierarchical design based on nested river catchments. Hierarchical linear modelling revealed that the majority of the variation in treeline elevation resided at the broadest, regional scale, which was best explained by the thermal modifying effects of solar radiation, mountain mass, and differences in the potential for cold air ponding. Nonetheless, at finer scales, physiological and disturbance effects were important and acted to modify the regional trend at these scales. These results suggest that variation in abrupt treeline elevations are due to both broad-scale temperature-based growth limitation processes and finer-scale stress- and disturbance-related effects on seedling establishment. Third, I explored the applicability of a meso-scale atmospheric model, The Air Pollution Model (TAPM), for generating 200 m resolution, hourly topoclimatic data for temperature, incoming and outgoing radiation, relative humidity, and wind speeds. Initial assessments of TAPM outputs against data from two climate station locations over seven years showed that the model could generate predictions with a consistent level of accuracy for both sites, and which agreed with other evaluations in the literature. TAPM was then used to generate data at 28, 7x7 km Nothofagus treeline zones across New Zealand for January (summer) and July (winter) 2002. Using mixed-effects linear models, I determined that both site-level factors (mean growing season temperature, mountain mass, precipitation, earthquake intensity) and local-level landform (slope and convexity) and topoclimatic factors (solar radiation, photoinhibition index, frost index, desiccation index) were influential in explaining variation in treeline elevation within and among these sites. Treelines were generally closer to their site-level maxima in regions with higher mean growing season temperatures, larger mountains, and lower levels of precipitation. Within sites, higher treelines were associated with higher solar radiation, and lower photoinhibition and desiccation index values, in January, and lower desiccation index values in July. Higher treelines were also significantly associated with steeper, more convex landforms. Overall, this thesis shows that investigating treelines across extensive areas at multiple study scales enables the development of a more comprehensive understanding of treeline variability and underlying environmental constraints. These results can be used to formulate new hypotheses regarding the mechanisms driving treeline formation and to guide the optimal choice of field sites at which to test these hypotheses.

Images, Alexander Turnbull Library

The cartoon, which looks like a woodcut depicts a muscled workman wearing a black singlet; his arms are folded and the fingers of one hand are crossed. On his arms are tattoos of a helmet and pick, a '$' symbol, a petrol pump, and a high magnitude earthquake graph. Behind him are buildings, including the Christchurch Cathedral, damaged following the Christchurch earthquake of 22 February 2011. Below the cartoon are the words 'Apologies to Nigel Brown' - a black singlet is a recurring motif in the work of New Zealand artist Nigel Brown. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

A small boy proudly tells his father 'Next month our class is donating all our pocket money to the quake fund'. His father, who is sitting in an armchair reading a newspaper with a headline that says 'Brownlee lavishes top dollar pay on quake panel' is so furious that steam pours out of his head. Context - The public has been very generous with donations to victims of the Christchurch earthquakes. Questions are now being asked about the Christchurch City Council's handling of consultants' contracts (to do with the rebuilding of the city after the earthquakes). City councillors have been questioning the council's awarding of more than $2.8 million of contracts to consultants. Quantity: 1 digital cartoon(s).

Research papers, Lincoln University

The city of Christchurch, New Zealand, incurred significant damage due to a series of earthquakes in 2010 and 2011. The city had, by the late 2010s, regained economic and social normalcy after a sustained period of rebuilding and economic recovery. Through the concerted rebuilding effort, a modern central business district (CBD) with redesigned infrastructure and amenities was developed. The Christchurch rebuild was underpinned by a commitment of urban planners to an open and connected city, including the use of innovative technologies to gather, use and share data. As was the case elsewhere, the COVID-19 pandemic brought about significant disruptions to social and economic life in Christchurch. Border closures, lockdowns, trading limitations and other restrictions on movement led to changes in traditional consumer behaviors and affected the retail sector’s resilience. In this study, we used CBD pedestrian traffic data gathered from various locations to predict changes in retail spending and identify recovery implications through the lens of retail resilience. We found that the COVID-19 pandemic and its related lockdowns have driven a substantive change in the behavioral patterns of city users. The implications for resilient retail, sustainable policy and further research are explored.

Images, Alexander Turnbull Library

A rescue worker carries the dead body of a woman out of the crumbled remains of a building. Nearby is a copy of the 'Building Code'. Context - there are questions being asked about whether some of the buildings that collapsed too readily in the Christchurch earthquake of 22 February 2011 had been subject to stringent enough building code regulations. The Department of Building and Housing said the vertical shaking in the central business district was both extreme and unusual and early indications suggest it was much more violent than designed for in the building code standards which are based on the kind of shaking expected to happen every 500 years. Quantity: 1 digital cartoon(s).

Research papers, Victoria University of Wellington

This paper begins with a discussion of the history of negligent manslaughter in New Zealand and its development from the standard of ordinary negligence to the current test of a “major departure” from the expected standard of care, as set out under s 150A of the Crimes Act 1961. The paper then examines failings in s 150A’s current application, arguing that the “major departure” test has created injustices due to its strictly objective nature. Two examples of this are discussed in-depth, Bawa-Garba v R (UK) where a doctor was convicted of grossly negligent manslaughter for the death of her patient; and the decision not to prosecute the negligent engineers of the CTV building which collapsed in the Christchurch earthquake of 2011. The paper discusses three potential resolutions moving forward. It concludes that a more subjective interpretation of the wording of s 150A, which takes account of circumstances excusing or condemning a defendant’s conduct, would prevent future injustices and be a reasonably open interpretation on the wording of s 150A.

Images, Alexander Turnbull Library

Text reads 'The earth moved...... and so did the government's infrastructure spending estimate'. Centre cartoon is the text '$17 billion' set against the backdrop of a seismic graph. Context - Auckland and Christchurch have been given top priority in the Government's latest national infrastructure plan, with more than seven billion dollars of its $17 billion budget going to the two cities. NZ Council for Infrastructure chief executive Stephen Selwood says hes not surprised at the large amount of funding going to Auckland and Christchurch, saying its clear the Christchurch rebuild will require a major commitment and Aucklands continued growth also requires significant funding. (Source: www.3news.co.nz, 5 July 2011) Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Text reads 'Could the wrecking ball be used on structures outside Christchurch?' The cartoon shows Minister for the Reconstruction of Christchurch Gerry Brownlee as the wrecking ball on a crane; he says 'let the fun begin'. To one side is a large house crowded with people which represents 'the welfare state' and is surrounded by a barrier on which are printed the words 'Fiscal emergency'. Context - Gerry Brownlee is seen by many as rather too quick to demolish heritage buildings in his rush to rebuild Christchurch. The wrecking ball idea also suggests that the National government is likely to wreck the welfare state in its efforts to sort out economic problems. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Text reads 'Dalai Lama visits Christchurch ostensibly to sympathise with quake-hit residents'. The cartoon shows the Dalai Lama bestowing blessings on a large crowd. In an insert he is seen sitting cross-legged on top of Mount Cook saying 'But off the record I came to look for a quiet spot to retire to!' Context - The Dalai Lama visited the quake-hit city for two days in early June. He also sent a letter of condolence to Prime Minister John Key after the February 22 earthquake. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

The cartoon shows members of the 'Japan Seismic Institute studying an earthquake graph; one of them says 'Where was that Kiwi moonman when we wanted him?' Depicted also is thew 'moonman' Ken Ring as a wizard studying an astrological chart. Behind them all Japan is depicted as a devastated wasteland. Context - the Japanese earthquake and tsunami of 4th March 2011 and the present threat of a nuclear catastrophe. Also the so-called Moon Man, astrologer Ken Ring, who predicted that Christchurch would be hit by a huge earthquake today (20 March 2011). His claims have terrified Cantabrians and led to people fleeing Christchurch. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

The title is 'Gerry BrownLie?' and the cartoon shows the Minister for Earthquake recovery, Gerry Brownlee, saying 'It was NOT a lie. It was a false promise'. Context: Earthquake Minister Gerry Brownlee has apologised for falsely promising red zone homeowners they would be paid out for improvements to their house. Brownlee promised in June that, in some cases, home improvements like new kitchens would be included in the government settlement offer for red zone houses. But the offer is only valid if the improvement has added to the footprint of the house. (Press - 4 September 2011) Alternate version of DCDL-0018758 Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Cartoons about political and social issues in New Zealand and overseas. The cartoon has the words 'Tsunami Warning cancelled' in the centre. Above are the words 'The end is nigh... insurance running out! No more cover!' Below the word 'cancelled' are the words 'We have reinsurance!' Context - Civil Defence has cancelled a tsunami warning after a 7.8 magnitude earthquake struck off the Kermadec Islands this morning (7 July 2011) The tsunami image is used to illustrate the problems that could arise from lack of insurance in Christchurch. When their policies run out on 30 June Earthquake-hit Christchurch and Waimakariri councils are in danger of having no property insurance because as the CEO of Civic Assurance, which insures most councils, says, 'the company cannot buy reinsurance'. There was also a potential problem for home-owners when AMI Insurance, the largest insurer of homes in Christchurch, was threatening insolvency. However, AMI has announced that it has re-insurance cover for earthquakes and other natural disasters from tomorrow (1 July 2011) for the next year. The Government feared AMI Insurance's directors would wind up the company affecting a huge section of New Zealand's insurance market and derail the reconstruction of Christchurch, official documents confirm. AMI said it had doubled its cover for the year to June 2012 after three large quakes in the year to June 2011. (Stuff 30 June 2011) Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Text reads 'Pet of the day... ' Below is a notice tacked to a wall which has an image of a cat wearing spectacles on it. Text reads 'LOST. Large moggy, last seen roaming in Christchurch. Answers to the name of "Gerry" or "Dinners ready". Has a loud purr, looks cuddly but can turn...' Context: This is a reference to Gerry Brownlee, the Minister for Earthquake Recovery. When National announced its offer based on the 2007 rating valuation to red-zone property owners on 23 June, Gerry Brownlee specifically told people who had made improvements between the time of the valuation and the September quake to 'keep their receipts'. The offer from CERA dated August 19 now says quite clearly that people can only seek an adjustment to the purchase price if the rating valuation is based on an incorrect floor area, or if 'you have received a code compliance certificate for consented building work undertaken after the rating valuation and that work increased the floor area of your house'. (Voxy - 23 August 2011) Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

A bus tours a city street with destroyed schools either side. The guide points out destruction on the right from earthquakes and on the left from Hekia Parata. Wider context is the ongoing impact of the Christchurch February 2011 earthquake. The implication is that the earthquake caused physical damage to some schools and that the Minister for Education is responsible for destroying others with her announcement of school closures in Christchurch on 18 February 2013. Quantity: 1 digital cartoon(s).

Research papers, Lincoln University

New Zealand is one of the most highly urbanised countries in the world with well over 87 per cent of us living in 138 recognised urban centres, yet the number of people residing in inner city areas is proportionally very low. Householders have been exercising their preference for suburban or rural areas by opting for low density suburban environments. It is widely agreed that productivity and sustainability increase when people aggregate in the inner city, however there is a perceived trade-off between the density and liveability of an area. Achieving liveability in the inner city is concerned with reducing the pressures which emerge from higher population densities. Promoting inclusive societies, revitalising underutilised cityscapes, ensuring accessibility and fostering sense of place, are all elements essential to achieving liveable communities. The rebuild following the 2010 and 2011 Canterbury earthquakes provides Christchurch with an opportunity to shape a more environmentally sustainable, economically vibrant and liveable city. This research involves undertaking a case study of current inner city liveability measures and those provided for through the rebuild. A cross-case analysis with two of the world’s most liveable cities, Melbourne and Vancouver, exposes Christchurch’s potential shortcomings and reveals practical measures the city could implement in order to promote liveability.

Research papers, Lincoln University

On 4 September 2010, a 7.1 magnitude earthquake struck near Darfield, 40 kilometres west of Christchurch, New Zealand. The quake caused significant damage to land and buildings nearby, with damage extending to Christchurch city. On 22 February 2011, a 6.3 magnitude earthquake struck Christchurch, causing extensive and significant damage across the city and with the loss of 185 lives. Years on from these events, occasional large aftershocks continue to shake the region. Two main entomological collections were situated within close proximity to the 2010/11 Canterbury earthquakes. The Lincoln University Entomology Research Collection, which is housed on the 5th floor of a 7 storey building, was 27.5 km from the 2010 Darfield earthquake epicentre. The Canterbury Museum Entomology Collection, which is housed in the basement of a multi-storeyed heritage building, was 10 km from the 2011 Christchurch earthquake epicentre. We discuss the impacts of the earthquakes on these collections, the causes of the damage to the specimens and facilities, and subsequent efforts that were made to prevent further damage in the event of future seismic events. We also discuss the wider need for preparedness against the risks posed by natural disasters and other catastrophic events.

Images, Alexander Turnbull Library

The cartoon shows the letters of the name 'Christchurch' as blocks of stone that have collapsed into a pile of rubble; on top is a single rose. Refers to the Christchurch earthquake of Saturday 4th September 2010. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Text reads 'Collateral damage'. A couple stand looking at a broken column surrounded by fallen masonry; text on the column reads 'Curbs on govt spending'. The man says 'It's a shame. It was due to be unveiled in a few weeks'. Context - the Christchurch earthquake of 22 February 2011; curbs on government spending can be seen as 'collateral damage'. In December 2010 Finance Minister Bill English pledged to keep a cap on spending to rein in a widening deficit as slower consumer demand hinders the economic recovery and hurts tax receipts. The earthquake will make economic recovery even more difficult. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

New PM of Australia Julia Gillard stands on top of a house of cards that looks extremely unstable. She says 'As newly elected PM of Australia I promise all cards on the table'. Below are the words 'NZ not the only shaky country..' Refers to the recent closely-contested and 'most-extraordinary Australian election in decades' which has been won by Labour's Julia Gillard. The negotiating for a new government by Julia Gillard against her Liberal rival Tony Abbott took 17 days, with Julia Gillard, in the end, able to cobble together a government with the support of independents Tony Windsor and Rob Oakeshott as well as the Greens plus a long list of promises. Critics see her coalition as dysfunctional. The text below refers to the Canterbury earthquake of 4th September 2010. Quantity: 2 digital cartoon(s).