Abstract
This paper presents selected results on the above- and below-ground growth performance of 12 indigenous woody species commonly found growing naturally in unstable riparian slope and/or bank environments throughout New Zealand. This study was needed because little information exists on the effectiveness of New Zealand’s indigenous riparian plant species for slope and stream bank stabilisation. By examining the growth performance of selected riparian species during the first 5 years following establishment,we provide valuable insights into the likely strengths and limitations of individual species at maturity and, therefore, into their overall potential usefulness, singularly and/or as mixed plantings, for future riparian stabilisation projects. For all species, their root systems are typically shallow and confined to the uppermost 31 cm of soil. Root spread (mean maximum diameter) increased with increasing age with interspecies differences, by age 5 years, ranging from between ~1 and 2.5 m. At age 5 years the mean root biomass, for all species combined, was 1.2 kg/plant, and averaged ~23% of total plant biomass. Changes in the allocation of biomass for root and shoot growth appear to be species and age dependent. The results of this study indicate that most have above- and below-ground growth attributes well suited to colonising steep and unstable riparian slopes where shallow soil failure is prevalent and/or where stream banks are rocky with skeletal soils. All form part of the early plant succession. Once established, and in the absence of grazing, they are relatively fast growing. The effectiveness of riparian restoration programmes using indigenous species, though potentially high for low-order stream, will be limited by their relatively shallow-rooted habit for bank stabilisation on larger rivers without the prior installation of structural protection works.
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References
Abernethy B and Rutherfurd I D 2001 The distribution and strength of riparian tree roots in relation to riverbank reinforcement. Hydrol. Process. 15, 63–79.
Acheson A R 1968 River control and drainage in New Zealand. Ministry of Works, New Zealand, 296 pp.
Allan Herbarium 2000 New Zealand Plant Names Database, Landcare Research, New Zealand. Available http://nzfl-ora.landcareresearch.co.nz (Accessed 22 November 2004).
Cameron R J 1963 A study of the rooting habits of rimu and tawa in pumice soils. N Z J For. 8, 771–785.
Cowley J M and Whyte C F 1997 Impact assessment for sawfly on Willow, Nematus oligospilus Förster (Hymenoptera: Tenthredinidae). New Zealand Plant Protection Centre, Lynfield, Auckland. Internal Ministry of Agriculture Report, 20 pp.
Czernin A 2002 Above-ground and below-ground characteristics of the New Zealand cabbage tree (Cordyline australis) with particular reference to the root system morphology and root strength. MSc thesis, University of Agricultural Sciences, Vienna, 183 pp.
Easson G and Yarbrough L D 2002 The effects of riparian vegetation on bank stability. Environ. Eng. Geosci. 8, 247–260.
Eyles G O 1983 The distribution and severity of present soil erosion in New Zealand. N.Z. Geog. 39, 12–28.
Foweraker C E, 1929 The podocarp rain forests of Westland, New Zealand. Kahikatea and Totara forests, and their relationships to silting. Te Kura Ngahere. A forestry journal issued by the Forestry Club of the Canterbury College School, Christchurch, New Zealand.
Hewitt A E 1998 New Zealand Soil Classification. 2nd Landcare Research Science Series No. 1 Manaaki Whenua Press, Lincoln, New Zealand.
IPCC, 2000: Land Use, Land-Use Change, and Forestry. A Special report of the IPCC [Watson R T, I R Noble B Bolin N H Ravindranth D J Verardo and D J Dokken, (Eds.)]. Cambridge Univ. Press, Cambridge, UK.
Marden M and Phillips C J 2002 How do native riparian plants grow? Conservation Quorum, 14–15.
Marden M and Phillips C J 2003 Stream bank planting trials. Conservation Quorum, 12–13.
Marden M and Phillips C J 2004 Stream bank planting trial: the final chapter. Conservation Quorum, 7–8.
New Zealand Climate Change Office 2003 Climate change. National Inventory Report for New Zealand. Greenhouse Gas Inventory, 1990–2001. Ministry for the Environment, Wellington, 86 pp.
Phillips C J and Watson A J 1994 Structural Tree Root Research in New Zealand, A Review. Landcare Research Science Series 7. Manaaki Whenua Press, Lincoln.
Phillips C J, Marden M, Rowan D and Ekanayake J C 2001 Stabilising characteristics of native riparian vegetation in New Zealand. In Proc. 3rd Australian Stream Management Conference, Brisbane August 2001, 507–512.
Schiechtl H M and Stern R 1994 Handbuch für naturnahen Wasserbau, Eine Anleitung für ingenieurbiologische Bauweisen. Osterreichischer Agrarverlag, Wien
Van Kraayenoord C W S and Hathaway R L 1986 Plant materials handbook for soil conservation, Vol. 2, Introduced Plants. 229. Water and Soil Misscellaneous Publication No. 94. National Water and Soil Conservation Authority, Wellington, New Zealand, ISSN 0110-4705.
Watson A J and O’Loughlin C L 1985 Morphology, strength, and biomass of manuka roots and their influence on slope stability. N Z J. For. Sci. 15, 337–348.
Watson A J and O’Loughlin C L 1990 Structural root morphology and biomass of three age classes of Pinus radiata. N Z J. For. Sci. 20, 97–110.
Watson A J, Marden M and Rowan D 1995 Tree species performance and slope stability. In D H Barker (ed), Vegetation and Slopes. pp. 161–171. Thomas Telford Press, London.
Watson A J, Phillips C J and Marden M 1999 Root strength, growth, and rates of decay: root reinforcement changes of two tree species and their contribution to slope stability. Plant Soil 217, 39–47.
Watson A J and Marden M 2004 Live root wood tensile strengths of some common New Zealand indigenous and plantation species. NZ J. For. Sci. 34(3), 344–353.
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Marden, M., Rowan, D., Phillips, C. (2007). Stabilising characteristics of New Zealand indigenousriparian colonising plants. In: STOKES, A., SPANOS, I., NORRIS, J.E., CAMMERAAT, E. (eds) Eco-and Ground Bio-Engineering: The Use of Vegetation to Improve Slope Stability. Developments in Plant and Soil Sciences, vol 103. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5593-5_14
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