Tree Hollow Requirements of Leadbeater's Possum and Other Possums and Gliders in Timber Production Ash Forests of the Victorian Central Highlands.

1988 ◽  
Vol 15 (4) ◽  
pp. 347 ◽  
Author(s):  
AP Smith ◽  
D Lindenmayer
Keyword(s):  
Forest Management ◽  
Regression Models ◽  
Timber Production ◽  
Total Density ◽  
Management Options ◽  
Eucalyptus Regnans ◽  
Dead Trees ◽  
Production Forests ◽  
Leadbeater's Possum ◽  
Tree Hollow

A model is presented of relationships between the density of Leadbeater's possum (Gymnobelideus leadbeateri) and other tree-hollow dependent possums and gliders and the density of potential nest trees (PNT) in Eucalyptus regnans/E. delegatensis forests, where PNT are defined as all living or dead trees with d.b.h. more than or equal to 0.5 m and ht. more than or equal to 6 m. The total density of all possums and gliders increased linearly with PNT density, in an approx. 1:1 ratio, then plateaued at an av. max. density of 11.3 animals per 3 ha once PNT density exceeded 12 per 3 ha. Regression models predict that G. leadbeateri will be absent from the majority of sites with less than 4.2 PNT per 3 ha and will increase linearly in density to an av. max. of 7.8 animals (or 3.1 colonies) per 3 ha on sites with more than 10 PNT per 3 ha. The absence of G. leadbeateri from sites with fewer than 4.2 PNT per 3 ha was attributed to: competition for hollows from other species; use of more than one PNT by individual colonies; and unsuitability of hollows in up to 2 out of every 3 PNT. Regression models predict that current logging prescriptions in ash forests, which call for retention of a minimum of 15 trees for every 10 ha clear felled, will result in elimination of G. leadbeateri from the majority of clearfelled coupes, and will reduce the total number of hollow-dependent possums and gliders to less than one-eighth of their av. max. density in unlogged forest. A range of forest management options are presented and discussed to ensure the continued availability of PNT for hollow-dependent arboreal mammals in timber production forests.

History of forestry and forest management

1975 ◽  
Vol 271 (911) ◽  
pp. 69-80 ◽  
Keyword(s):  
Forest Management ◽  
Industrial Revolution ◽  
Environmental Benefits ◽  
National Forest ◽  
Private Landowners ◽  
Timber Production ◽  
Land Area ◽  
The Past ◽  
The Social ◽  
History Of

Britain possesses a forest area which is one of the smallest in Europe in relation to its population and land area. In the past, forests have been felled to make way for farming and to supply timber for ships, houses, fuel and metal smelting. Timber was a key to sea power, and repeatedly the availability of home timber supplies has proved crucial in time of war. The nation’s dwindling reserves of timber have been a source of anxiety since Tudor times and periodic surges of planting for timber production by private landowners took place until about 1850. Thereafter, interest faded with the advent of the iron ship, the Industrial Revolution and the availability of cheap timber imports. Govern­ ment activity was minimal until a national forest authority was formed in 1919 to create a strategic timber reserve. Since 1958 there have been frequent policy reviews to assess the changing needs of the nation for timber and the new values associated with the social and environmental benefits of forests.

Economics of a nest-box program for the conservation of an endangered species: a reappraisal

2001 ◽  
Vol 31 (11) ◽  
pp. 1992-2003 ◽  
Author(s):  
Daniel A Spring ◽  
Michael Bevers ◽  
John OS Kennedy ◽  
Dan Harley
Keyword(s):  
Net Present Value ◽  
Population Recovery ◽  
Optimal Management ◽  
Present Value ◽  
Eucalyptus Regnans ◽  
Nest Boxes ◽  
Mountain Ash ◽  
Local Abundance ◽  
Leadbeater's Possum

An optimization model is developed to identify timing and placement strategies for the installation of nest boxes and the harvesting of timber to meet joint timber–wildlife objectives. Optimal management regimes are determined on the basis of their impacts on the local abundance of a threatened species and net present value (NPV) and are identified for a range of NPV levels to identify production possibility frontiers for abundance and NPV. We apply the model to a case study focusing on an area of commercially productive mountain ash (Eucalyptus regnans F. Muell.) forest in the Central Highlands region of Victoria, Australia. The species to be conserved is Leadbeater's possum (Gymnobelideus leadbeateri McCoy), which is locally limited by a scarcity of nesting hollows. The modeling is exploratory but indicates that nest boxes may offer a promising population recovery tool if consideration is taken of their placement and areal extent through time.

Interface Urban Forest Management in an Urbanizing Landscape

2020 ◽  
Author(s):  
Maria A. Cunha-e-Sá ◽  
Sofia F. Franco
Keyword(s):  
Land Use ◽  
Forest Management ◽  
Urban Areas ◽  
Urban Forest ◽  
Urban Forestry ◽  
Comparative Statics ◽  
Forest Conversion ◽  
Timber Production ◽  
Land Uses ◽  
Clear Cutting

Although forests located near urban areas are a small fraction of the forest cover, a good understanding of the extent to which —wildland-urban interface (WUI) forest conversion affects local economies and environmental services can help policy-makers harmonize urban development and environmental preservation at this interface, with positive impact on the welfare of local communities. A growing part of the forest resource worldwide has come under urban influence, both directly (i.e., becoming incorporated into the interface or located at the interface with urban areas) and indirectly (as urban uses and values have come to dominate more remote forest areas). Yet forestry has been rather hesitant to recognize its urban mandate. Even if the decision to convert land at the WUI (agriculture, fruit, timber, or rural use) into an alternative use (residential and commercial development) is conditional on the relative magnitude and timing of the returns of alternative land uses, urban forestry is still firmly rooted in the same basic concepts of traditional forestry. This in turn neglects features characterizing this type of forestland, such as the urban influences from increasingly land-consumptive development patterns. Moreover, interface timber production-allocated land provides public goods that otherwise would be permanently lost if land were converted to an irreversible use. Any framework discussing WUI optimal rotation periods and conversion dates should then incorporate the urban dimension in the forester problem. It must reflect the factors that influence both urban and forestry uses and account for the fact that some types of land use conversion are irreversible. The goal is to present a framework that serves as a first step in explaining the trends in the use and management of private land for timber production in an urbanizing environment. Our framework integrates different land uses to understand two questions: given that most of the WUI land use change is irreversible and forestry at this interface differs from classic forestry, how does urban forestry build upon and benefit from traditional forestry concepts and approaches? In particular, what are the implications for the Faustmann harvesting strategy when conversion to an irreversible land use occurs at some point in the future? The article begins with a short background on the worldwide trend of forestland conversion at the WUI, focusing mostly on the case of developed countries. This provides a context for the theoretical framework used in the subsequent analysis of how urban factors affect regeneration and conversion dates. The article further reviews theoretical models of forest management practices that have considered either land sale following clear-cutting or a switch to a more profitable alternative land use without selling the land. A brief discussion on the studies with a generalization of the classic Faustmann formula for land expectation value is also included. For completeness, comparative statics results and a numerical illustration of the main findings from the private landowner framework are included.

scholarly journals The Effect of Forest Management Options on Forest Resilience to Pathogens

2020 ◽  
Vol 3 ◽  
Author(s):  
Michaela Roberts ◽  
Christopher A. Gilligan ◽  
Adam Kleczkowski ◽  
Nick Hanley ◽  
A. E. Whalley ◽  
...  
Keyword(s):  
Forest Management ◽  
Management Options ◽  
Forest Resilience
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