Maine's Spruce Budworm Policy

Thomas A. Rumpf

doi:10.5558/tfc61385-5

Maine's Spruce Budworm Policy

The Forestry Chronicle ◽

10.5558/tfc61385-5 ◽

1985 ◽

Vol 61 (5) ◽

pp. 385-387

Author(s):

Thomas A. Rumpf

Keyword(s):

Forest Management ◽

Spruce Budworm ◽

Demand Analysis ◽

Environmental Concerns ◽

Management Problem ◽

Intensive Forest Management ◽

Wood Utilization ◽

Protection Costs ◽

Term Management

In the 1970s an outbreak of spruce budworm, combined with rising protection costs, environmental concerns, and recoghition of the long-term nature of the infestation, demanded new approaches to forest management and protection. Through adapting traditional policy, frequent conflict and innovation, the Maine Department of Conservation and private landownes refined their understanding of the budworm infestation as a long-term management problem. The recently completed Maine Spruce-Fir Wood Suply/Demand Analysis highlighted the need for investment in more intensive forest management and better wood utilization, in addition to continued protection, if Maine's industries dependent on spruce and fir are to maintain their current levels of production.

Download Full-text

Predicting Tree Mortality Induced by Spruce Budworm: A Discussion

The Forestry Chronicle ◽

10.5558/tfc59294-6 ◽

1983 ◽

Vol 59 (6) ◽

pp. 294-297 ◽

Cited By ~ 5

Author(s):

J. R. Blais

Keyword(s):

Regional Differences ◽

Tree Mortality ◽

Choristoneura Fumiferana ◽

Abies Balsamea ◽

Spruce Budworm ◽

Reliable Prediction ◽

Spruce Stands ◽

Term Management ◽

Forest Managers

Forest managers have expressed the need for guidelines that would predict, up to 5 years, the annual spruce budworm damage on a stand basis. Reasons why reliable prediction is generally not possible are discussed. It is suggested that long-term management programs, that would take into consideration periodic losses resulting from recurring budworm outbreaks and that would be based on regional differences in the vulnerability of fir-spruce stands, should be implemented. Key words: Spruce budworm, Choristoneura fumiferana; forest management; tree mortality; defoliation; stand vulnerability, balsam fir, Abies balsamea.

Download Full-text

Impacts of forest management on soil properties: a fundamental research topic for Mexico

REVISTA CHAPINGO SERIE CIENCIAS FORESTALES Y DEL AMBIENTE ◽

10.5154/r.rchscfa.2019.11.088 ◽

2020 ◽

Vol 27 (1) ◽

pp. 33-52 ◽

Cited By ~ 1

Author(s):

Karla Valladares-Samperio ◽

◽

Leopoldo Galicia-Sarmiento ◽

Keyword(s):

Forest Management ◽

Boreal Forests ◽

Negative Influence ◽

Biological Properties ◽

Ecosystem Functions ◽

Functional Changes ◽

Wood Harvesting ◽

Intensive Forest Management ◽

The Impact

Introduction: The increase in the intensity of wood harvesting has a negative influence on ecosystem functions of soils in temperate and boreal forests. Objective: To understand the impacts of intensive and extensive forest management methods on the physical, chemical and biological properties of soils, and consequences on nutrient availability and stabilization processes in temperate and boreal forests. Results and discussion: Intensive forest management methods can generate greater imbalance in the processes of availability and stabilization of nutrients, compared to selective methods. The impact is reflected in the deterioration of soil structure and the decrease of nutrient reserves and microbial communities. These damages affect fertility and functionality of soil, decreasing long-term productivity. Affectations depend on the intensity of biomass extracted, environmental conditions and site preparation. This makes evident the need to monitor forest management and its impact on soil ecology in temperate forests, which maintains long-term productivity and ensures the availability of wood volumes. Conclusion: In Mexico, the impact of forest management has been scarcely analyzed and it is indispensable to understand the functional changes in the processes that determine soil fertility and forest productivity.

Download Full-text

CONSERVATION OF SPRUCE BUDWORM PARASITOIDS FOLLOWING APPLICATION OF BACILLUS THURINGIENSIS VAR. KURSTAKI BERLINER

The Canadian Entomologist ◽

10.4039/ent1241085-6 ◽

1992 ◽

Vol 124 (6) ◽

pp. 1085-1092 ◽

Cited By ~ 10

Author(s):

V.G. Nealis ◽

K. van Frankenhuyzen ◽

B.L. Cadogan

Keyword(s):

Bacillus Thuringiensis ◽

Spruce Budworm ◽

Field Trials ◽

Primary Objective ◽

Northern Ontario ◽

Strategic Integration ◽

Early Instar ◽

Term Management

AbstractField trials in northern Ontario in 1990 and 1991 confirmed that survival of spruce budworm larvae [Choristoneurafumiferana (Clemens)] (Lepidoptera: Tortricidae) parasitized by Apanteles fumiferanae Viereck (Hymenoptera: Braconidae) was greater than survival of nonparasitized budworm larvae following application of Bacillus thuringiensis var. kurstaki Berliner (Bt). Apparent parasitism by A. fumiferanae increased slightly when application of Bt was early (instar III or IV) but increased significantly when applications were later in the season (instars IV–VI). Delaying the timing of the spray conserved parasitoids while providing significant reductions in budworm densities and not compromising the primary objective of Bt application, i.e. the protection of current year foliage. The potential for long-term management of spruce budworm through the strategic integration of natural and imposed mortalities is discussed.

Download Full-text

Distinctly Canadian silviculture and forest management

The Forestry Chronicle ◽

10.5558/tfc77441-3 ◽

2001 ◽

Vol 77 (3) ◽

pp. 441-445 ◽

Cited By ~ 1

Author(s):

Gordon Weetman

Keyword(s):

Forest Management ◽

Sustainable Forest Management ◽

Broad Band ◽

Present Situation ◽

Forest Resource ◽

Complex Situation ◽

The Right ◽

Professional Foresters ◽

Term Management

In contrast to most other countries, Canada uses a leasing system for provincial Crown forests. It is unlikely this will change. Canadian forestry has been characterized by a struggle between landlord and tenant over the silviculture and forest management obligations of the tenant and the right of citizens as owners of the forest resource to know what is going on. Forest companies do not have equity in timber and are reluctant to invest in long-term management. Also, Canada is characterized by a broad band of boreal forest across the country with remarkable little contact between the provinces on forest management. Add to this new drivers for change due to customer demands for certification, and the practice of sustainable forest management and notions and concepts from conservation biology, particularly about emulation of historical disturbance. The reality of the present situation is that the price of access to Crown timber that costs nothing to grow is becoming more complex and expensive as demands for better inventories and monitoring increase.Canadian forestry is becoming more rigorous and accountable and under much more NGO scrutiny. Professional foresters have to be accountable, up-to-date, and behave like professionals. The challenges today are outlined for this new complex situation.

Download Full-text