Forest planning and management concepts can sometimes be difficult to grasp. Games provide an eff... more Forest planning and management concepts can sometimes be difficult to grasp. Games provide an effective way to demonstrate different concepts and facilitate deeper understanding of approaches and practices to sustainable forest management. In this paper we describe a game devised to demonstrate alternative ways to set allowable harvest levels in large (>10,000 ha) native forest planning units. The game requires minimal materials (photocopies of relevant maps and a few hundred beer bottle tops), and can be played and debriefed in 2-3 hours. The game focuses on the principles underlying area control and volume control of timber harvesting, and provides a basis for discussion of inventory and monitoring needs. The game has been popular and effective in courses for forestry professionals in developing countries, and for students in an undergraduate forestry course.
ABSTRACT In Australia, tree planting is being considered for major national catchment planning an... more ABSTRACT In Australia, tree planting is being considered for major national catchment planning and management initiatives, especially in low rainfall regions. Models that provide spatial estimates of tree growth and incorporate the effects of climate variability are required to support these initiatives. This study employed three different modelling approaches to assess tree growth for the Lachlan catchment in south-eastern Australia. Firstly, the Physiological Principles for Predicting Growth (3-PG) model was used in ‘grid mode’ with long-term average climate grids to produce surfaces of modelled growth (Model 1) for three scenarios: managed timber plantations, plantations for farm forestry and other purposes, and natural regeneration of native vegetation. Secondly, the 3-PG model was used in ‘point mode’ with 50 years of actual weather records to simulate the effects of climatic variability on tree growth at 30 sites across the region (Model 2). Simulated estimates of growth for these 30 sites (Model 2 outputs) were then regressed against a detailed mean annual rainfall surface and the resulting linear equations were used to develop surfaces for predicted growth across the catchment (Model 3). These three approaches were compared to assess their suitability for developing spatial estimates of tree growth and the effects of climatic variability for catchment assessment and planning. The study confirms that use of long-term average climate data to model tree growth across a region may be misleading and that regional assessments should incorporate the effects of climatic variability on tree growth.
Executive Summary Traditionally, artesian water that came to the surface under natural pressure w... more Executive Summary Traditionally, artesian water that came to the surface under natural pressure was allowed to flow uncontrolled into open drains and creeks for distribution to domestic stock. Even in well-maintained drains, up to 95% of this water can be wasted ...
Bureau of Rural Sciences, Canberra, and Forest Research Institute, Lae, 2005
The Commonwealth of Australia acting through the Bureau of Rural Sciences has exercised due care ... more The Commonwealth of Australia acting through the Bureau of Rural Sciences has exercised due care and skill in the preparation and compilation of the information and data set out in this publication. Notwithstanding, the Bureau of Rural Sciences its employees and advisers disclaim all liability, including liability for negligence, for any loss, damage, injury, expense or cost incurred by any person as a result of accessing, using or relying upon any of the information or data set out in this publication to the maximum extent permitted by law.
Forest planning and management concepts can sometimes be difficult to grasp. Games provide an eff... more Forest planning and management concepts can sometimes be difficult to grasp. Games provide an effective way to demonstrate different concepts and facilitate deeper understanding of approaches and practices to sustainable forest management. In this paper we describe a game devised to demonstrate alternative ways to set allowable harvest levels in large (>10,000 ha) native forest planning units. The game requires minimal materials (photocopies of relevant maps and a few hundred beer bottle tops), and can be played and debriefed in 2-3 hours. The game focuses on the principles underlying area control and volume control of timber harvesting, and provides a basis for discussion of inventory and monitoring needs. The game has been popular and effective in courses for forestry professionals in developing countries, and for students in an undergraduate forestry course.
ABSTRACT In Australia, tree planting is being considered for major national catchment planning an... more ABSTRACT In Australia, tree planting is being considered for major national catchment planning and management initiatives, especially in low rainfall regions. Models that provide spatial estimates of tree growth and incorporate the effects of climate variability are required to support these initiatives. This study employed three different modelling approaches to assess tree growth for the Lachlan catchment in south-eastern Australia. Firstly, the Physiological Principles for Predicting Growth (3-PG) model was used in ‘grid mode’ with long-term average climate grids to produce surfaces of modelled growth (Model 1) for three scenarios: managed timber plantations, plantations for farm forestry and other purposes, and natural regeneration of native vegetation. Secondly, the 3-PG model was used in ‘point mode’ with 50 years of actual weather records to simulate the effects of climatic variability on tree growth at 30 sites across the region (Model 2). Simulated estimates of growth for these 30 sites (Model 2 outputs) were then regressed against a detailed mean annual rainfall surface and the resulting linear equations were used to develop surfaces for predicted growth across the catchment (Model 3). These three approaches were compared to assess their suitability for developing spatial estimates of tree growth and the effects of climatic variability for catchment assessment and planning. The study confirms that use of long-term average climate data to model tree growth across a region may be misleading and that regional assessments should incorporate the effects of climatic variability on tree growth.
Executive Summary Traditionally, artesian water that came to the surface under natural pressure w... more Executive Summary Traditionally, artesian water that came to the surface under natural pressure was allowed to flow uncontrolled into open drains and creeks for distribution to domestic stock. Even in well-maintained drains, up to 95% of this water can be wasted ...
Bureau of Rural Sciences, Canberra, and Forest Research Institute, Lae, 2005
The Commonwealth of Australia acting through the Bureau of Rural Sciences has exercised due care ... more The Commonwealth of Australia acting through the Bureau of Rural Sciences has exercised due care and skill in the preparation and compilation of the information and data set out in this publication. Notwithstanding, the Bureau of Rural Sciences its employees and advisers disclaim all liability, including liability for negligence, for any loss, damage, injury, expense or cost incurred by any person as a result of accessing, using or relying upon any of the information or data set out in this publication to the maximum extent permitted by law.
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Papers by Ian A Frakes