Articles

Elastic constants of green Pinus radiata wood

Mathematical modelling is often used to investigate phenomena difficult or impossible to measure experimentally.

Authors: Nicholas T. Davies, Clemens M. Altaner and Luis A. Apiolaza

European gypsy moth (Lymantria dispar dispar L.) completes development and defoliates exotic radiata pine plantations in Spain

Like most pines, radiata pine (Pinus radiata D.Don) is conventionally considered resistant to defoliation by European gypsy moth, i.e. it is only consumed by late larval stages, or when susceptible species are no...

Authors: Fernando Castedo-Dorado, Gorka Lago-Parra, María J. Lombardero, Andrew M. Liebhold and María F. Álvarez-Taboada

Environmental fate of terbuthylazine and hexazinone in a planted forest steepland Recent Soil, New Zealand

The use of herbicides for weed control in New Zealand planted forestry is important for primary production. The objective of this study was to assess the environmental fate of terbuthylazine and hexazinone in ...

Authors: Loretta G. Garrett, Michael S. Watt and Stephen H. Pearce

Herbicide concentrations in waterways following aerial application in a steepland planted forest in New Zealand

The use of herbicides to control competing vegetation in planted forests is an important component of forest management. The increasing public aversion to herbicide use includes the possible contamination of r...

Authors: Brenda R. Baillie

Simple random sampling of individual items in the absence of a sampling frame that lists the individuals

A ‘sampling frame’ identifies the sampling units in a population and their locations. It may consist of a listing of sampling units, or it may be based on a map of the population area within which sampling uni...

Authors: P. W. West

Use of upper stem diameters in a polynomial taper equation for New Zealand radiata pine: an evaluation

Polynomial taper models are the tree profile equation types that are most commonly used to describe stem profiles of New Zealand radiata pine (Pinus radiata D.Don). Among these equations are model forms that incl...

Authors: Charles O. Sabatia

Assessment of herbicides for selectively controlling broom (Cytisus scoparius) growing with radiata pine (Pinus radiata) in New Zealand

Broom (Cytisus scoparius (L.) Link) is an invasive weed in many commercial radiata pine (Pinus radiata D.Don) plantations throughout New Zealand. A variety of herbicides are available to selectively control young...

Authors: Hop Tran, Kerry C. Harrington, Alastair W. Robertson and Michael S. Watt

Temporal and spatial expression of terpene synthase genes associated with agarwood formation in Aquilaria malaccensis Lam

The diseased wood, agarwood, from the tropical tree taxa Aquilaria, is famed for its unique fragrance and medicinal values, mainly due to its richness in secondary metabolites such as the sesquiterpenes. The pres...

Authors: Anor Basah Azzarina, Rozi Mohamed, Shiou Yih Lee and Mohd Nazre

Validation of models predicting modulus of elasticity in Douglas-fir trees, boles, and logs

Acoustic tools have simplified estimation of wood modulus of elasticity (MOE). Strong relationships between acoustic velocity and MOE of logs have encouraged use of acoustics at earlier points in the value cha...

Authors: Christine L. Todoroki and Eini C. Lowell

The role of planted forests in improving the productive capacity and ecological potential of Scots pine boreal forests in the Middle Volga Region

Russia’s boreal forests are a major source of timber as well as being a large terrestrial sink for carbon. Planted forests have played an important role in increasing the overall area of the Russian boreal for...

Authors: Evgeny М. Romanov, Тatiana V. Nureeva and Nikolay V. Eremin

Multi-sensor modelling of a forest productivity index for radiata pine plantations

An understanding of how plantation productivity varies spatially is important for forest planning, management and projection of future plantation yields and returns. The 300 Index is a volume productivity inde...

Authors: Michael S. Watt, Jonathan P. Dash, Pete Watt and Santosh Bhandari

Modelling the effects of genetic improvement on radiata pine wood density

Density is a key wood quality trait, which is moderately to highly heritable, and has been the focus of selective breeding efforts in radiata pine (Pinus radiata D.Don) in New Zealand. Forest managers require inf...

Authors: Mark O. Kimberley, John R. Moore and Heidi S. Dungey

The occurrence of progesterone 5β-reductase is not limited to the angiosperms: a functional gene was identified in Picea sitchensis and expressed in Escherichia coli

Progesterone 5β-reductases (P5ßRs) catalyse one step in the stereospecific biosynthesis of cardenolides (potent repellents of herbivores and pharmaceutical stimulants of disordered heart muscle cells). They we...

Authors: Kristin Rudolph, Thomas Wiegert, Roland Schubert and Frieder Müller-Uri

Observations of parasitism and aggression by female Enoggera nassaui, an egg parasitoid of the eucalypt pest, Paropsis charybdis

Female parasitoids that display aggressive behaviour towards conspecifics in defence of host resources must make a trade-off between time spent on aggression and time spent on parasitism. Such a trade-off not ...

Authors: Sarah Mansfield

Eradication of Paropsisterna beata (Newman) (Coleoptera: Chrysomelidae) in a semi-rural suburb in New Zealand

A large population of Paropsisterna beata (eucalyptus leaf beetle) was detected on Eucalyptus nitens (H. Deane & Maiden) Maiden (Myrtaceae) at Whitemans Valley, a suburb east of Upper Hutt, Wellington, in 2012. T...

Authors: Emmanuel Yamoah, Dave Voice, Disna Gunawardana, Brad Chandler and Don Hammond

Modelling of root reinforcement and erosion control by ‘Veronese’ poplar on pastoral hill country in New Zealand

The control of erosion processes is an important issue worldwide. In New Zealand, previous studies have shown the benefits of reforestation or bioengineering measures to control erosion. The impetus for this w...

Authors: M. Schwarz, C. Phillips, M. Marden, I. R. McIvor, G. B. Douglas and A. Watson

Development of forest-yield maps generated from Global Navigation Satellite System (GNSS)-enabled harvester StanForD files: preliminary concepts

The productivity of fast-growing forest plantation stands varies across short distances depending on site and forest characteristics. This indicates that forest managers would benefit from a site-specific appr...

Authors: Alejandro Olivera and Rien Visser

Armillaria aotearoa species nova

Three named species of Armillaria are currently recognised as occurring in New Zealand: Armillaria novae-zelandiae (G. Stev.) Herink, A. limonea (G. Stev.) Boesew. and Armillaria hinnulea Kile & Watling. A fourth...

Authors: I. A. Hood and T. D. Ramsfield

Early root development of field-grown poplar: effects of planting material and genotype

Poplar trees (Populus spp.) are used widely for soil conservation. A key advantage is their ability to establish from unrooted stem sections of varying dimensions, ranging from small cuttings to large poles. This...

Authors: Grant B. Douglas, Ian R. McIvor and Catherine M. Lloyd-West

Development of Pinus radiata suspension cultures from xylogenic callus

The ability to grow xylogenic Pinus radiata D.Don in a liquid medium rather than on a solid one would produce a more homogeneous culture, and this in turn would improve cell and gene studies. We report the develo...

Authors: Anna R. Caird, Gerty J. H. P. Gielen, Peter Dare, Christine Devillard, Christian Walter and Daniel Gapes

Needle fungi in young Tasmanian Pinus radiata plantations in relation to elevation and rainfall

Needle fungi in conifers have been extensively studied to explore their diversity, but environmental factors influencing the composition of fungal communities in Pinus radiata D.Don needles have received little a...

Authors: Istiana Prihatini, Morag Glen, Timothy J. Wardlaw, David A. Ratkowsky and Caroline L. Mohammed

Radial variation in selected wood properties of three cypress taxa

New Zealand-grown cypresses are typically harvested at 35–40 years of age; however, shorter rotations have been proposed. The objective of this study was to evaluate the feasibility of producing structural pro...

Authors: Christine L. Todoroki, Charlie B. Low, Heather M. McKenzie and Luis D. Gea

Susceptibility of New Zealand flora to Phytophthora kernoviae and its seasonal variability in the field

The oomycete Phytophthora kernoviae is known from the United Kingdom and the Republic of Ireland, where it is considered to be a recent invader, from Chile where it was only discovered in 2014, and New Zealand wh...

Authors: Judy Frances Gardner, Margaret Anne Dick and Martin Karl-Friedrich Bader

Modelling variation in wood density within and among trees in stands of New Zealand-grown radiata pine

Density is an important wood property due to its correlation with other wood properties such as stiffness and pulp yield, as well as being central to the accounting of carbon sequestration in forests. It is in...

Authors: Mark O. Kimberley, Dave J. Cown, Russell B. McKinley, John R. Moore and Leslie J. Dowling

New data affects forestry-related impacts of global warming theories

Authors: David South

New Zealand school children’s perceptions of local forests and the Montréal Process Criteria and Indicators: comparing local and international value systems

A review of the international Montréal Process Criteria and Indicators (MP C&I) sustainable forests reporting framework required member countries to benchmark the Indicators against locally held forest values....

Authors: Karen M. Bayne, Barbara K. Höck, Harley R. Spence, Kirsten A. Crawford, Tim W. Payn and Tim D. Barnard

Effect of logging wounds on diameter growth of beech (Fagus orientalis Lipsky) trees following selection cutting in Caspian forests of Iran

Logging damage to residual trees during selection cutting may lead to serious economic losses in terms of both timber quality and diameter growth reduction. In this study, we investigated the effect of logging...

Authors: Farzam Tavankar, Amireslam Bonyad, Enrico Marchi, Rachele Venanzi and Rodolfo Picchio

Within-tree, between-tree, and geospatial variation in estimated Pinus radiata bark volume and weight in New Zealand

Many studies have been carried out to quantify the wood properties of radiata pine, but few have explicitly looked at quantifying radiata pine bark. Bark is of increasing interest for many reasons, e.g. energy...

Authors: Glen Murphy and Dave Cown

An air-drying model for piled logs of Eucalyptus globulus and Eucalyptus nitens in Chile

Water accounts for around half of the total mass in living trees, and therefore large savings can be achieved if logs are dried before transporting or burning.

Authors: Horacio E. Bown and Jean-Pierre Lasserre

Use of UAV or remotely piloted aircraft and forward-looking infrared in forest, rural and wildland fire management: evaluation using simple economic analysis

Investment in emerging technologies may contribute to a reduction in the suppression costs of wildfires, and is thus worth careful consideration and trialling by researchers and managers. This investigation lo...

Authors: B. R. Christensen

Modelling spiral grain angle variation in New Zealand-grown radiata pine

Spiral grain angle (SGA) is a wood property that has a strong influence on end-product quality, particularly for solid timber, and most commercial log and timber grading rules restrict the amount of visible su...

Authors: John R. Moore, Dave J. Cown and Russell B. McKinley

The influence of initial and post-thinning stand density on Douglas-fir branch diameter at two sites in New Zealand

Branches support the foliage needed for tree growth, but if the branch diameter is too large it may constitute a defect when the tree is assessed for timber quality and when the tree is processed into boards. ...

Authors: J. C. Grace, R. K. Brownlie and S. G. Kennedy

Observations of “coarse” root development in young trees of nine exotic species from a New Zealand plot trial

Forests and wide-spaced trees are used widely in New Zealand to control erosion from shallow landslides. Species that offer similar or better levels of protection to those currently used are sought to meet fut...

Authors: Chris J. Phillips, Michael Marden and Suzanne M. Lambie

Post-harvest respiration of Pinus radiata logs under different temperature and storage conditions

Radiata pine (Pinus radiata D.Don) log exports are a growing and important trade for New Zealand. Oxygen (O₂) depletion and carbon dioxide (CO₂) accumulation in ship holds caused by log respiration may affect the...

Authors: Jinquan Feng, Allan Woolf, Xingyun Yang, Shane Olsson, Don Brash, Alistair Hall and Bruce Bycroft

Detection of asymptomatic fungal microorganisms in Pinus radiata tissue culture material

Tissue culture has been viewed as a relatively safe method of transporting conifer germplasm as the risk of pathogens associated with tissue cultured material has been assumed to be low. Despite these assumpti...

Authors: Rebecca J Ganley, Cathy L Hargreaves and Lloyd A Donaldson

The effect of land use on slope failure and sediment generation in the Coromandel region of New Zealand following a major storm in 1995

Part of the Coromandel region (North Island, New Zealand) was subjected to a severe storm in March 1995. Analysis of relevant data provides a valuable opportunity to assess the type, extent, distribution and s...

Authors: Michael Marden and Donna Rowan

Application of LiDAR data to maximise the efficiency of inventory plots in softwood plantations

Precision in describing plantation attributes is a key requirement for forestry managers and inventory surveys aim to extract the most precise information possible using the smallest number of plots. This pape...

Authors: Gavin Melville, Christine Stone and Russell Turner

Inventory estimates of stem volume using nine sampling methods in thinned Pinus radiata stands, New Zealand

Simulation is an established tool for examining the efficacy of forestry sampling designs yet there is little empirical information on the effect that spatial layout of a sample has on stand-level inventory of...

Authors: Andrew D Gordon and David Pont

Water quality in New Zealand’s planted forests: a review

This paper reviewed the key physical, chemical and biological water quality attributes of surface waters in New Zealand’s planted forests. The purpose was to: a) assess the changes in water quality throughout ...

Authors: Brenda R Baillie and Daniel G Neary

Relative persistence of commonly used forestry herbicides for preventing the establishment of broom (Cytisus scoparius) seedlings in New Zealand plantations

Many of the herbicides used in site preparation of forests and during initial selective weed management can persist in the soil for several months, killing or stunting seedlings of broom (Cytisus scoparius (L.) L...

Authors: Hop Tran, Kerry C Harrington, Alastair W Robertson and Michael S Watt

Comparing and contrasting flooded and unflooded forests in the Peruvian Amazon: seed rain

In order to understand how the seed rain differs among Amazonian forests, I sampled the seed rain in six different forest types across the Amazonian landscape.

Authors: Randall W Myster

Effects of stand density and seedlot on three wood properties of young radiata pine grown at a dry-land site in New Zealand

Manipulation of stand density and choice of genetic material are two key mechanisms through which forest managers can influence tree growth and wood properties. Past silvicultural practices in New Zealand have...

Authors: John R Moore, Dave J Cown, Russell B McKinley and Charles O Sabatia

Growth, biomass, leaf area and water-use efficiency of juvenile Pinus radiata in response to water deficits

As the frequency and severity of drought events are expected to increase globally, drought-induced reductions in plantation productivity are likely to become more important. Such reductions will be of concern ...

Authors: Matthew J Waghorn, David Whitehead, Michael S Watt, Euan G Mason and Jonathan J Harrington

Erratum to: Planted forest development in Australia and New Zealand: comparative trends and future opportunities

Authors: David Rhodes and Michael Stephens

The evaluation of aerially applied triclopyr mixtures for the control of dense infestations of wilding Pinus contorta in New Zealand

Wilding conifers are a major threat to large areas of land throughout New Zealand where they compete with native vegetation, modify ecosystems, reduce available grazing land, limit future land-use options and ...

Authors: Stefan Gous, Peter Raal and Michael S Watt

First evidence of genetic-based tolerance to red needle cast caused by Phytophthora pluvialis in radiata pine

Red needle cast (RNC) is a new needle disease of Pinus radiata D. Don (radiata pine) in New Zealand that is causing significant, but as-yet un-quantified, loss of growth and productivity. This foliar disease has ...

Authors: Heidi S Dungey, Nari M Williams, Charlie B Low and Graham T Stovold

Fungi Silvicolae Novazelandiae: 10

Descriptions of five species of fungi recorded on trees and shrubs are given in this paper. Three species are recorded from New Zealand for the first time, a new combination is proposed for one species and the...

Authors: Peter Gadgil and Margaret Dick

Black locust (Robinia pseudoacacia L.) ecophysiological and morphological adaptations to drought and their consequence on biomass production and water-use efficiency

Successful plantation efforts growing Robinia pseudoacacia L. (black locust) in the drier regions of Hungary and East Germany (Brandenburg), have demonstrated the potential of black locust as an alternative tree ...

Authors: Dario Mantovani, Maik Veste and Dirk Freese

Timber insurance: perspectives from a legal case and a preliminary review of practices throughout the world

Timber insurance is a form of risk management that can be used to protect forest owners from the effects of various types of disaster.

Authors: Daowei Zhang and Anne Stenger

Third International Congress on Planted Forests: Planted Forests on the Globe - Renewable Resources for the Future

Authors: Tim Payn, Jean Michel Carnus, Peter Freer-Smith, Christophe Orazio and Gert-Jan Nabuurs