Goal(s)/Objective(s): Determine the margin of safety for stream invertebrates for Matacil 180 Oil Flowable, a candidate insecticide for the spruce budworm.
Key Findings: For aminocarb in this formulation, the threshold concentration that induces drift is about 30 µg/L.
Key Findings: Current management choices appear to lie between years of repetitive chemical spraying, or, if spraying is stopped, extensive tree mortality followed by collapse of the outbreak.
Problem Addressed: Attack of living pine trees by southern pine beetles
Key Findings: The direct relationship among spot incidence and mean distance from nearest spots within period 1 indicates that the more abundant spots were in an octant, the further apart they were on the average.
Goal(s)/Objective(s): Generate new baseline data to inform the Maine Bureau of Parks and Lands about what the recreation preferences and needs are for people who live in or visit Maine, identify the factors that influence outdoor recreation participation behavior, determine how Maine State Parks are used and what can be done to improve the experiences and services they provide.
Key Findings: Sampling was conducted in conjunction with the hemlock looper egg survey in late October. The forecast will be provided after the completion of processing of samples.
Goal(s)/Objective(s): Provide estimates of a spray project's total operating cost, the number of spray teams required, the hours of flying time by aircraft type and airfield, and a detailed report listing the airfield and aircraft type recommended for each spray block.
Goal(s)/Objective(s): Determine the relationship of tree and stand mortality to cumulative defoliation, the variability in tree mortality within and between stands and its relation to tree, stand, and site characteristics, and to evaluate the accuracy of regression equations presented by MacLean (1980) for predicting stand mortality during an outbreak.
Key Findings: There is a need for quantitative predictions of the impact of uncontrolled budworm outbreaks on stand yield for use in timber supply projections and the best model of tree mortality caused by budworm is that of a constant proportion of the host volume or density (i.e. a linear relationship)