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Found 10 records similar to Defoliation-induced changes in foliage quality during a spruce budworm outbreak

Federal

We measured the foliage area, weight and number of buds on young and mature balsam fir and white spruce trees. With these measurements total amounts of foliage per tree and per unit area of forest land can be calculated. These estimates can be used to determine the absolute numbers of insects feeding on these trees, numbers that are important in understanding patterns and fluctuations of population abundance. We also discovered that spruce budworm larvae occur preferentially in buds arranged in clusters.

Last Updated: Dec. 16, 2021
Date Published: Dec. 7, 2021
Organization: Natural Resources Canada
Formats: XLSX
Keywords:  Entomology
Federal

Chlorpyrifos (C9H11Cl3NO3PS) is an organophosphorus insecticide used for the control of mosquitoes, flies, various crop pests in soil and on foliage, household pests and aquatic larvae. It is also used on sheep and cattle for the control of ectoparasites. The maximum acceptable concentration (MAC) for chlorpyrifos in drinking water is 0.09 mg/L (90 µg/L).

Last Updated: Dec. 1, 2021
Date Published: Jan. 22, 2017
Organization: Health Canada
Formats: HTML
Keywords:  Canadian drinking-water quality, technical document, chlorpyrifos, water containing chlorpyrifos, maximum acceptable concentration, health risks
Federal

Leaf area index (LAI) quantified the density of vegetation irrespective of land cover. LAI quantifies the total foliage surface area per groud surface area. LAI has been identified by the Global Climate Observing System as an essential climate variable required for ecosystem,weather and climate modelling and monitoring. This product consists of annual maps of the maximum LAI during a grownig season (June-July-August) at 100m resolution covering Canada's land mass.

Last Updated: Jan. 4, 2022
Date Published: Nov. 5, 2021
Organization: Natural Resources Canada
Formats: WMS WCS HTML GeoTIF
Keywords:  Climate variables; biophysical parameters; canopy cover, Trees, Crops, Land cover
Provincial

*As of June 16, all COVID-19 datasets will be updated weekly on Thursdays by 2pm. * This dataset compiles daily snapshots of publicly reported data on 2019 Novel Coronavirus (COVID-19) outbreaks in Ontario. Learn how the Government of Ontario is helping to keep Ontarians safe during the 2019 Novel Coronavirus outbreak ##Data includes: * Summary of cases associated with outbreaks, by outbreak setting and date * Summary of ongoing outbreaks by outbreak setting * Summary of ongoing outbreaks by Public Health Unit (PHU) Effective March 25, 2022: Due to changes in testing, it is no longer possible to accurately track the total number of cases of COVID-19 associated with outbreaks in education, recreational, workplace, and unknown/other settings. This dataset is subject to change.

Last Updated: Aug. 17, 2022
Date Published: Nov. 25, 2020
Organization: Government of Ontario
Formats: CSV HTML
Keywords:  health and wellness, health, COVID-19, Health
Federal

The Outbreak Management Division (OMD) is notified of multi-jurisdictional foodborne and zoonotic illness outbreaks and clusters by various partners including international, federal, provincial and territorial public health and food safety organizations. Once OMD is notified, these outbreaks and clusters are assessed to determine the appropriate follow up action related to them. The target performance indicator for this work is to ensure 90% of multi-jurisdictional foodborne and zoonotic illness outbreaks and clusters that OMD is notified of are assessed within 24 hours.

Last Updated: Feb. 21, 2022
Date Published: Sep. 18, 2019
Organization: Public Health Agency of Canada
Formats: CSV
Keywords:  foodborne, zoonotic, outbreak
Provincial

Shows areas where forest insect pests have damaged or killed trees by defoliation, foliage mining and wood boring. Tree mortality rarely occurs as the result of one year's infestation, but from the result of several consecutive years of infestation and other contributing factors affecting weakened trees (e.g., fungal invasion). The Government of Ontario tracks forest damage events to help proactively manage the detrimental effects to our forests. We monitor the threat and spread of invasive forest pest insect species in Ontario.

Last Updated: Aug. 10, 2022
Date Published: Jan. 11, 2020
Organization: Government of Ontario
Formats: PDF DOCX HTML ZIP
Keywords:  Economy and Business, Environment and Natural Resources, Environment and energy, Government information
Federal

This guidance supports high quality investigations that will contribute to public health’s collective understanding of COVID-19 transmission in all types of school settings and the utility of mitigation measures implemented. A systematic approach to outbreak response, including an investigation that examines cases, contacts, their interactions and environment, will help to produce higher quality evidence and will support public health officials in making evidence informed policy decisions.
The guidelines will provide information applicable to any type of outbreak investigation and will highlight specific considerations for outbreaks occurring within an educational setting including daycares and schools.

Last Updated: Nov. 2, 2021
Date Published: Aug. 18, 2021
Organization: Public Health Agency of Canada
Formats: HTML
Keywords:  Evaluating, COVID-19, disease, transmission, public, health, measures, schools, Outbreak
Federal

Colonisation by secondary insects and fungi of trees killed by a hemlock looper outbreak on Anticosti Island in 1973

Last Updated: Apr. 13, 2022
Date Published: Jul. 23, 2021
Organization: Natural Resources Canada
Formats: CSV
Keywords:  Insect pest, hemlock looper, secondary colonisation, secondary insects
Federal

"Seasonal influenza, a respiratory infection caused by the influenza virus is a significant cause of morbidity and mortality, especially in individuals who are at the extremes of age, pregnant, immune compromised, or have chronic underlying disease. Morbidity and hospitalization rates for influenza among healthy children less than 2 years of age are similar to those among adults over 65 years of age. As with most acute viral respiratory infections, seasonal influenza occurs annually in the winter months, and healthcare-associated outbreaks may follow or parallel outbreaks in the community, which usually last from 6 to 8 weeks. Outbreaks are often characterized by abrupt onset and rapid transmission.

Last Updated: Dec. 12, 2018
Date Published: Jan. 1, 2010
Organization: Public Health Agency of Canada
Formats: PDF HTML
Keywords:  Influenza, patient, hygiene, respiratory, healthcare, precautions, infection, control, seasonal
Federal

This page presents detailed information on Canada's whole-of-government actions to respond to the COVID-19 outbreak.

Last Updated: Sep. 24, 2021
Date Published: May 9, 2020
Organization: Public Health Agency of Canada
Formats: HTML
Keywords:  COVID-19, outbreak, Canada’s response, COVID-19, pandemic, COVID, coronavirus
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