Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
CHANGES IN SPRUCE BUDWORM DEFOLIATION WITH CROWN LEVEL
View through CrossRef
AbstractDetailed estimates of defoliation caused by spruce budworm [Choristoneura fumiferana (Clem.)] over the crown length of young balsam fir [Abies balsamea (L.) Mill.] were made throughout a spruce budworm outbreak from 1976 to 1984 in the Cape Breton Highlands, Nova Scotia. The results show no clear tendency for a particular level of the crown to be damaged more heavily than any other. Thus, there is no reason to continue the common practice of taking samples from the mid-crown level on the assumption that they represent an ‘average’ level of defoliation either for high or low populations. Sampling from the bottom of the crown should provide a more convenient and cost-effective approach for estimating defoliation.
Title: CHANGES IN SPRUCE BUDWORM DEFOLIATION WITH CROWN LEVEL
Description:
AbstractDetailed estimates of defoliation caused by spruce budworm [Choristoneura fumiferana (Clem.
)] over the crown length of young balsam fir [Abies balsamea (L.
) Mill.
] were made throughout a spruce budworm outbreak from 1976 to 1984 in the Cape Breton Highlands, Nova Scotia.
The results show no clear tendency for a particular level of the crown to be damaged more heavily than any other.
Thus, there is no reason to continue the common practice of taking samples from the mid-crown level on the assumption that they represent an ‘average’ level of defoliation either for high or low populations.
Sampling from the bottom of the crown should provide a more convenient and cost-effective approach for estimating defoliation.
Related Results
Picea glauca
, white spruce
Picea glauca
, white spruce
This review synthesizes the fire effects information and relevant ecology of white spruce in North America that was available in the scientific literature as of 2015. Details and d...
Evaluation of branch sampling, ocular assessments, and aerial surveys for estimating spruce budworm defoliation
Evaluation of branch sampling, ocular assessments, and aerial surveys for estimating spruce budworm defoliation
We compared three methods for estimating current-year spruce budworm ( Choristoneura fumiferana (Clem.)) defoliation from 2014 to 2021 using a network of 99 permanent sample plots ...
Sex-specific responses of Populus deltoides to defoliation
Sex-specific responses of Populus deltoides to defoliation
There has been an increasing interest in understanding the differential effects of sexual dimorphism on plant stress responses. However, there is no clear pattern in the responses ...
Spruce Budworm Defoliation in Relation to Introgression in Red and Black Spruce
Spruce Budworm Defoliation in Relation to Introgression in Red and Black Spruce
Abstract
During a genecological study of the red-black spruce complex in central New Brunswick, it appeared that severity of spruce budworm defoliation was relate...
The Sensitivity of Young White Spruce to Spruce Budworm Defoliation
The Sensitivity of Young White Spruce to Spruce Budworm Defoliation
Abstract
Relationships between defoliation and volume growth were determined for 68 young white spruce trees in a 20-year-old plantation defoliated over a 2-year per...
Wildfire containment probability is not affected by eastern spruce budworm defoliation in Ontario, Canada
Wildfire containment probability is not affected by eastern spruce budworm defoliation in Ontario, Canada
Background
Stand-replacing wildfires and eastern spruce budworm outbreaks (Choristoneura fumiferana; SBW) are important disturbances in the boreal forest. SBW d...
A novel integrated framework to identify and characterize regional-scale pest insect dispersal
A novel integrated framework to identify and characterize regional-scale pest insect dispersal
Forest pest insects cause major socio-economic impacts, global losses of millions of dollars, and ecosystem changes. A key challenge for their management is tracing regional disper...
Nutrient characteristics and proline accumulation in relation to Picea abies status on drained peat soils
Nutrient characteristics and proline accumulation in relation to Picea abies status on drained peat soils
Monocultures of Norway spruce widely used for afforestation of drained peat soils often have low productivity and decline in vitality. The research aim was to elucidate: (1) imbala...