Impact and Control of Forest Diseases in Canada

For the period 1977-1981, estimates of annual timber losses in Canada as a result of disease are 65 million m3. Intensive forest management presents an opportunity for utilizing pathological recommendations for reducing these losses in order to maintain forest productivity. Control of nursery diseases, root rot, dwarf mistltoes, and Dutch elm disease has been most successful. The accuracy of net inventory volume has been greatly improved. There is a need to develop more reliable surveys for loss estimates and to predict future fosses, particularly on an individual stand basis. The utilization of biological information to develop new control strategies for use in intensive forest management is a challenge facing forest pathologists and forest managers in Canada today.

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Is Intensive Forest Management a misnomer? An Ontario-based discussion of terminology and an alternative approac

The Forestry Chronicle ◽

10.5558/tfc82662-5 ◽

2006 ◽

Vol 82 (5) ◽

pp. 662-674 ◽

Cited By ~ 10

Author(s):

F. Wayne Bell ◽

Douglas G Pitt ◽

Monique C Wester

Keyword(s):

Land Use ◽

Forest Management ◽

Land Use Planning ◽

Forest Policy ◽

Forest Growth ◽

Intensive Silviculture ◽

Intensive Forest Management ◽

Plot Network ◽

Intensively Managed ◽

Forest Managers

The term forest management refers to the science and business of operating a forest property, which, on Crown lands in Ontario, is typically a forest management unit. Silviculture is a component of forest management that refers to the suite of stand-level activities used to control stand composition and growth. Intensive forest management (IFM) is a concept that has been discussed and considered in Ontario for at least 30 years. Originally, it referred to an intensively managed forest in which most stands are subject to relatively intensive silvicultural practices. Over time, both professional foresters and stakeholders began using the term IFM as if it were synonymous with intensive silviculture. As a result, IFM has been inappropriately used to reference stand-level activities in several published definitions and key policy documents, creating confusion among the science community, professionals, and the public. This confusion has made it difficult to implement aspects of the 1999 Ontario Forest Accord, which calls for the use of IFM (meaning intensive silviculture) to increase forest growth and productivity in some areas to offset the withdrawal of lands for parks and protected areas. We call on forest managers to refer to the term IFM correctly and to portray forest management to stakeholders as consisting of a portfolio of natural and/or anthropogenic disturbance regimes. With this approach, forest managers could more meaningfully define the intensity of forest management and silviculture on their landbase.Key words: forest policy, land use planning, intensive silviculture, portfolio concept of forest management, triad principle of land-use zoning, Forest Research Partnership, NEBIE Plot Network

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Predictive biology and control strategies for vector-borne diseases of livestock

10.1603/ice.2016.107331 ◽

2016 ◽

Author(s):

D. Scott McVey

Keyword(s):

Control Strategies ◽

Vector Borne Diseases ◽

Vector Borne ◽

And Control

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Infections of bean plant and field soil are linked to region, root rot pathogen, and agro-ecosystem

Hellenic Plant Protection Journal ◽

10.2478/hppj-2021-0002 ◽

2020 ◽

Vol 0 (0) ◽

Author(s):

B. Naseri ◽

M. Gheitury ◽

M. Veisi

Keyword(s):

Root Rot ◽

Multivariate Analyses ◽

Control Method ◽

Control Strategies ◽

Fusarium Species ◽

Macrophomina Phaseolina ◽

Soil Variables ◽

Plant Infection ◽

Pathogen Prevalence ◽

Soil Infestation

SummaryUnderstanding pathogen-agrosystem interaction is particularly essential when applying a control method to minimize pathogen prevalence prior to plant infection. To meet this requirement, frequency of major root rot pathogens isolated from bean root and seed, and their soil populations were examined in farmers’ fields. Multivariate analyses evidenced more frequent isolations of Fusarium solani and Rhizoctonia solani from root and seed compared to Macrophomina phaseolina and Fusarium oxysporum. Two Fusarium species had denser soil populations than R. solani and M. phaseolina. More frequent isolations of pathogens were detected in root and seed collected from Abhar and Khodabandeh compared to Kheirabad region. Agronomic and soil variables corresponded less closely to root infections compared to soil infestation and seed infections. Bean market class, herbicide application, and planting depth were linked to root, seed and soil infestations. Such information provides a basis for increased confidence in choosing appropriate control strategies for a pathogen and region in sustainable agriculture.

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Effective infection prevention and control strategies in a large accredited psychiatric facility in Singapore

10.31234/osf.io/89uc5 ◽

2020 ◽

Author(s):

Daniel Poremski ◽

Sandra Henrietta Subner ◽

Grace Lam Fong Kin ◽

Raveen Dev Ram Dev ◽

Mok Yee Ming ◽

...

Keyword(s):

Mental Health ◽

Prevention And Control ◽

Infection Prevention ◽

Control Strategies ◽

Infection Prevention And Control ◽

Psychiatric Facility ◽

Essential Services ◽

Community Transmission ◽

And Control

The Institute of Mental Health in Singapore continues to attempt to prevent the introduction of COVID-19, despite community transmission. Essential services are maintained and quarantine measures are currently unnecessary. To help similar organizations, strategies are listed along three themes: sustaining essential services, preventing infection, and managing human and consumable resources.

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The New Development of Life-Span Theory of Control: Regulatory Models and Control Strategies

Advances in Psychological Science ◽

10.3724/sp.j.1042.2013.00847 ◽

2013 ◽

Vol 21 (5) ◽

pp. 847-856

Author(s):

Rongmin TANG ◽

Houchao LV

Keyword(s):

Life Span ◽

Control Strategies ◽

New Development ◽

And Control ◽

Regulatory Models

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Optimization and Control Petroleum Refinery Wastewater Treatment Systems — Status, Trends and Needs

Water Quality Research Journal ◽

10.2166/wqrj.1989.029 ◽

1989 ◽

Vol 24 (3) ◽

pp. 463-477

Author(s):

Stephen G. Nutt

Keyword(s):

Wastewater Treatment ◽

Process Control ◽

Petroleum Refinery ◽

Control Strategies ◽

Refinery Wastewater ◽

Statistical Process ◽

Petroleum Refinery Wastewater ◽

Optimization And Control ◽

And Control ◽

Wastewater Treatment Systems

Abstract Based on discussions in workshop sessions, several recurring themes became evident with respect to the optimization and control of petroleum refinery wastewater treatment systems to achieve effective removal of toxic contaminants. It was apparent that statistical process control (SPC) techniques are finding more widespread use and have been found to be effective. However, the implementation of real-time process control strategies in petroleum refinery wastewater treatment systems is in its infancy. Considerable effort will need to be expended to demonstrate the practicality of on-line sensors, and the utility of automated process control in petroleum refinery wastewater treatment systems. This paper provides a summary of the discussions held at the workshop.

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Learning and control

10.1093/oso/9780199674923.003.0026 ◽

2018 ◽

Author(s):

Ivan Herreros

Keyword(s):

Machine Learning ◽

Reinforcement Learning ◽

Brain Function ◽

Control Strategies ◽

Learning Problems ◽

Animal Learning ◽

Feed Forward Control ◽

Machine Learning Applications ◽

And Control

This chapter discusses basic concepts from control theory and machine learning to facilitate a formal understanding of animal learning and motor control. It first distinguishes between feedback and feed-forward control strategies, and later introduces the classification of machine learning applications into supervised, unsupervised, and reinforcement learning problems. Next, it links these concepts with their counterparts in the domain of the psychology of animal learning, highlighting the analogies between supervised learning and classical conditioning, reinforcement learning and operant conditioning, and between unsupervised and perceptual learning. Additionally, it interprets innate and acquired actions from the standpoint of feedback vs anticipatory and adaptive control. Finally, it argues how this framework of translating knowledge between formal and biological disciplines can serve us to not only structure and advance our understanding of brain function but also enrich engineering solutions at the level of robot learning and control with insights coming from biology.

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Current status, problems and control strategies of water resources pollution in China

Water Policy ◽

10.2166/wp.2014.018 ◽

2014 ◽

Vol 17 (3) ◽

pp. 423-440 ◽

Cited By ~ 6

Author(s):

Lei Wu ◽

Tong Qi ◽

Dan Li ◽

Huijuan Yang ◽

Guoqing Liu ◽

...

Keyword(s):

Water Pollution ◽

Control Strategies ◽

Water Environment ◽

Underground Water ◽

National Standard ◽

Current Status ◽

Food Borne ◽

Major River ◽

And Control ◽

Research And Policy

The surface water of 10 major river systems across China has been under intermediate pollution with striking eutrophication problems in major lakes (reservoirs). More data from the Ministry of Environmental Protection of China showed that underground water in 57% of monitoring sites across Chinese cities was polluted or extremely polluted. Rural water pollution, the rising number of incidents of industrial pollution, outdated sewerage systems, and the overuse of pesticides and chemical fertilizers also endanger the health of rural inhabitants in China. Nearly 0.2 billion rural residents could not use drinking water in accordance with the national standard, and there were reports of ‘cancer villages' and food-borne diseases (cancer village refers to a village where a certain proportion of its inhabitants suffer from the same kind of cancer or where there is a hike in cancer incidence in that area). This study aims to raise awareness of the prevention and control of water pollution and to propose a set of national research and policy initiatives for the future safety of the water environment in China.

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