https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52025 Wed 27 Sep 2023 09:53:59 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34101 Pinus radiata D. Don (radiata pine) trees. Sections were imaged with a flatbed scanner using circularly polarised transmitted light, with the resin canals that contained only primary cell walls appearing dark against a bright background of highly-birefringent tracheids. These images were analysed using ImageJ software and allowed for a non-biased, automated detection of resin canals and their spatial distribution across the entire stem. We analysed 8-month-old trees that had been subjected to tilting to induce compression wood and rocking to simulate the effects of wind. These experiments showed that both rocking and tilting promoted the formation of wood and confirmed that resin canals were most common adjacent to the pith. Both the rocking and tilting treatments caused a decrease in the number of resin canals per unit area when compared to vertical controls, but this change was due to the increased formation of wood by these treatments. In tilted samples, however, analysis of resin canal distribution showed that canals were more common on the lower sides of stems but these canals were excluded from regions that formed compression wood.]]> Thu 07 Feb 2019 14:26:16 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:1787 Sat 24 Mar 2018 08:27:32 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:1753 Sat 24 Mar 2018 08:27:27 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31064 Pinus radiata D. Don) plantations. Forest floor samples from plantations of three age classes (13-year-old; 27-year-old; 41-year-old) with various site qualities (II–VII) were collected from the Kuitpo radiata pine plantations in the Mount Lofty forest region of South Australia. The C concentrations of the forest floor components were significantly higher in the 41-year-old plantation than in the 13-year-old plantation, whereas the N concentrations were significantly lower in the 41-year-old plantation than in the 13-year-old plantation, except for the needle component. The C and N content of needles was significantly larger in the 13-year-old plantation than in the 41-year-old plantation, whereas fine woody materials, such as branches and bark, contributed less to the total C and N contents in the 13-year-old plantation. The total C content of the forest floor did not significantly differ with age, whereas the N content was significantly affected by age in the radiata plantations. The results reflect the existence of considerable variation in the quality and quantity of the C and N in forest floor components associated with different ages of radiata pine growing in sites of various qualities.]]> Sat 24 Mar 2018 07:24:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34243 Fri 22 Feb 2019 14:42:03 AEDT ]]>