File reference: CCL-2012-02-19-IMG_0217 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0206 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0241 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0252 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0267 From the collection of Christchurch City Libraries.
File reference: CCL-2012-03-17IMG_0327 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0258 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0230 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0202 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0273 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0215 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0264 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0254 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0260 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0212 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0262 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0275 From the collection of Christchurch City Libraries.
File reference: CCL-2012-02-19-IMG_0268 From the collection of Christchurch City Libraries.
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.
Building Record Form for the former Canterbury Public Library, 1870s section, 109 Cambridge Terrace, Christchurch
Photograph captioned by BeckerFraserPhotos, "A detail of the former Public Library on Hereford Street".
Photograph captioned by BeckerFraserPhotos, "A detail of the former Public Library on Hereford Street".
Autumn leaves piled up outside the boarded-up doors to the Central Library on Gloucester Street.
Rubble from the demolition of the Farmers car park, with the public library in the background.
Workers laying tiles on the floor of the Undercroft, a new eating area under the library.
The door and frame are the last parts of the Woolston Community Library to be demolished.
The damaged Woolston Community Library building on Ferry Road. Part of the upper storey has collapsed.
A staff member at work in temporary office space in the Central Library after the earthquake.
1 June 2012. File reference: CCL-2012-06-01- From the collection of Christchurch City Libraries.
File ref: CCL-2011-03-Operation-Storytime-dscf0465 From the collection of Christchurch City Libraries