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Filtering by: Subject Aquatic insects -- Effect of pesticides on Subject Report (United States. Forest Service. Northern Region. Insect and Disease Management)

The effect of low-level sulfur dioxide on sensitive vegetation : a background document for use in assessing air quality redesignation for primitive areas as required by the Clean Air Act Amendments of 1977 (P.L. 95-95)

Creator:

Walsh, Natalie, Carlson, Clinton E., and United States. Forest Service. Northern Region. State & Private Forestry

Resource Type:

Technical Report

Full Text:

5200 May 1978 THE EFFECT OF LOW-LEVEL SULFUR DIOXIDE ON SENSITIVE VEGETATION A Background Document
Western spruce budworm defoliation trend relative to weather in the Northern Region, 1969-1979

Creator:

Hard, John S., Tunnock, Scott, Eder, Robert G., and United States. Forest Service. Northern Region. State & Private Forestry

Abstract:

Western spruce budworm defoliated area in the Northern Region has differed significantly across three discrete geographic zones during the past decade. Aerially visible defoliation in northern Idaho increased from 1.7 million acres in 1969 to a high of 2.2 million acres in 1974, and declined to none in 1979. Defoliated...

Resource Type:

Technical Report

Full Text:

May, June, and July of the year before. Based on warm, dry conditions throughout the Region in • 1979
Impact of copper smelter emissions on two subalpine ecosystems near Anaconda, Montana : preliminary report

Creator:

Walsh, Natalie, Bissell, Gael, and United States. Forest Service. Northern Region. State & Private Forestry

Abstract:

Preliminary analysis of data from this study in the mountains southwest of the Anaconda Copper Smelter, an industrial source of SO2 and heavy metal particulate, reflects a complex pattern of pollutant impact. The differential effect of smelter emissions on plant life in the study area is best explained by the...

Resource Type:

Technical Report

Full Text:

. Several researchers have investigated the effect of these emissions on plant life in the Anaconda area

ScholarsArchive@OSU

The effect of low-level sulfur dioxide on sensitive vegetation : a background document for use in assessing air quality redesignation for primitive areas as required by the Clean Air Act Amendments of 1977 (P.L. 95-95)

Western spruce budworm defoliation trend relative to weather in the Northern Region, 1969-1979

Impact of copper smelter emissions on two subalpine ecosystems near Anaconda, Montana : preliminary report

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