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Images, UC QuakeStudies

Temporary office space set up in the NZi3 building. The photographer comments, "University of Canterbury administration all fits into one building! Well, sort of. A long view of the west end; Facilities, enrolments, student admin, then meeting areas. E-learning is the first bay to the east side of the stairs".

Images, UC QuakeStudies

Paul Nicholls from the University of Canterbury's E-Learning team and Digital Media Group Manager Wayne Riggall in their temporary office in KB02 in Kirkwood Village, the complex of prefabs set up after the earthquakes to provide temporary office and classroom space for the university. The photographer comments, "The e-learning group and the video conferencing team are now located in the Kirkwood Village at the University of Canterbury. It's a very impressive project, about 60 buildings arranged in various configurations with some used for teaching or computer labs, and others as staff offices. We will probably stay here for several years now. Adjoining our area is a space for Wayne, the Digital Media Group Manager, who will organise a sitting area for visitors and small meetings. Beyond Wayne is a closed-off meeting room".

Images, UC QuakeStudies

A car drives onto the damaged Dallington bridge. The bridge has visibly moved relative to the road, there is a large gap at the side of the bridge, and the railings are warped. The photographer comments, "Dallington Bridge northern approach, Gayhurst Rd".

Images, UC QuakeStudies

Liquefaction silt covers the ground in front of the Shirley Medical Centre, and more silt is piled beside the entrance. The photographer comments, "These photos show our old house in River Rd and recovery work around Richmond and St Albans. The local medical centre is seriously silted up".

Images, UC QuakeStudies

Members of the University of Canterbury's Digital Media Group in their temporary office in KB02 in Kirkwood Village, the complex of prefabs set up after the earthquakes to provide temporary office and classroom space for the university. The photographer comments, "The e-learning group and the video conferencing team are now located in the Kirkwood Village at the University of Canterbury. It's a very impressive project, about 60 buildings arranged in various configurations with some used for teaching or computer labs, and others as staff offices. We will probably stay here for several years now. Nick Calvert from the video-conferencing team, Blair and Paul Nicholls behind. Nathan Gardiner with his head in a box".

Images, UC QuakeStudies

A photograph of the rubble from the Observatory tower in the South Quad of the Christchurch Arts Centre. The tower collapsed during the 22 February 2011 earthquake. A digger was used to clear the rubble away from the building. Scaffolding constructed around the tower has also collapsed and is amongst the rubble. A car and the bumper of another car can be seen under the rubble.

Images, UC QuakeStudies

The damaged Ozone Hotel on Marine Parade. Fallen bricks lie on the ground in front of the building, which is surrounded by security fencing. The photographer comments, "A bike ride to New Brighton and the beach 3 weeks after the Feb 22 quake. Roads were still very rough and under reconstruction. Some buildings are still standing. but don't look too healthy".

Research Papers, Lincoln University

Tree mortality is a fundamental process governing forest dynamics, but understanding tree mortality patterns is challenging because large, long-term datasets are required. Describing size-specific mortality patterns can be especially difficult, due to few trees in larger size classes. We used permanent plot data from Nothofagus solandri var. cliffortioides (mountain beech) forest on the eastern slopes of the Southern Alps, New Zealand, where the fates of trees on 250 plots of 0.04 ha were followed, to examine: (1) patterns of size-specific mortality over three consecutive periods spanning 30 years, each characterised by different disturbance, and (2) the strength and direction of neighbourhood crowding effects on sizespecific mortality rates. We found that the size-specific mortality function was U-shaped over the 30-year period as well as within two shorter periods characterised by small-scale pinhole beetle and windthrow disturbance. During a third period, characterised by earthquake disturbance, tree mortality was less size dependent. Small trees (,20 cm in diameter) were more likely to die, in all three periods, if surrounded by a high basal area of larger neighbours, suggesting that sizeasymmetric competition for light was a major cause of mortality. In contrast, large trees ($20 cm in diameter) were more likely to die in the first period if they had few neighbours, indicating that positive crowding effects were sometimes important for survival of large trees. Overall our results suggest that temporal variability in size-specific mortality patterns, and positive interactions between large trees, may sometimes need to be incorporated into models of forest dynamics.