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OECD Co-operative Research Programme sponsored workshop - supplement to Volume 40 (2010)
This supplement to volume 40 of the New Zealand Journal of Forestry Science contains the proceedings of the OECD Co-operative Research Programme sponsored workshop held on 17 March 2009 during the IUFRO International Forest Biosecurity Conference, 16-20 March 2009, Rotorua, New Zealand.21/12/2009.
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NZJFS - Volume 40 (2010)
The New Zealand Journal of Forestry Science will have a biosecurity focus this year. Volume 40 will include the proceedings of the IUFRO* International Forest Biosecurity Conference held in Rotorua, New Zealand from 16 to 20 March 2009. A special supplement to Volume 40 will also be published. This supplement will contain the proceedings of a biosecurity workshop, held at the Conference on 17 March 2009. This workshop was sponsored by the Organisation for Economic Co-operation and Development (OECD) to explore the different perspectives of scientists, policy makers and forest managers. Overall, the scope of the Journal continues to cover the breadth of forestry science. Plantation forestry remains a particular focus but manuscripts on a wide range of forestry topics, such as tropical species, climate change, and policy will also be considered.20/01/2010.
ISSN 1179-5395. -
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NZJFS - Volume 13 (1983)
Dyck, W. J., Gosz, J. R., & Hodgkiss, P. D.
Issue 1. 01/01/2011. 14-24.
ISSN 0048-0134.Tube lysimeters were used to determine the relative potential of several ecosystems to lose nutrients through leaching after disturbance. The ecosystems examined were all on yellow-brown pumice soils and were dominated by species exotic to New Zealand: (1) Pinus radiata D. Don (radiata pine), (2) Pseudotsuga menziesii (Mirb.) Franco (Douglas fir), (3)Eucalyptus saligna Sm., and (4) Ulex europaeus L. (gorse). The treatments applied to the systems were trenching and weeding (for 1, 2, and 3), clearfelling (1), clearfelling followed by herbicide application and burning (2), and crushing and burning (4). Soil water was periodically collected from 10 lysimeters in each treated area as well as in undisturbed controls for up to 2 years after disturbance, and analysed for nitrate nitrogen as an indicator of nutrient loss. For the undisturbed systems nitrate loss was in the order gorse > > Douglas fir > E. saligna = radiata pine. Nitrate concentrations from the undisturbed gorse area averaged approximately 5-mg NO3-N/L whereas nitrate from radiata pine averaged 0.006 mg/L. After disturbance relative nitrate loss was in the order gorse > > Douglas fir = radiata pine > > E. saligna. In the radiata pine and Douglas fir sites, trenching produced a greater response (max. 10 mg NO3-N/L for both sites) than clearfelling or clearfelling followed by burning, probably due to rapid revegetation of the clearfelled areas. At two radiata pine sites, one made less fertile through 16 years of litter removal, soil-water nitrate concentrations increased at the same time after trenching; however, the less-fertile site showed greater resistance to nitrate release. The E. saligna site responded only very slightly to trenching, possibly because of allelopathic influences. -
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31 documents, showing 1 to 31
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KEY CONTACTS
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Ruth Falshaw
Editor, New Zealand Journal of Forestry Science