Project Code: BRL-01-024
Area:Applied Research
Sponsor:Blue Ridge Lumber (1981)

The primary purpose of this Study was to examine the indirect effects of habitat change on breeding birds following the aerial application of glyphosate and hexazinone herbicides.

Research objectives included: investigation of the occurrence, frequency and habitat use by breeding birds in clearcuts where herbicide treatments have been applied; and the documentation of the composition and structure of bird habitats in these same clearcuts.

The relationships between breeding bird populations and habitat changes on glyphosate & hexazinone-treated and untreated clearcuts were studied in the Lower Foothills Natural Subregion of Alberta over the period of 1993 to 1998.

A fifty-seven page report was produced in November 1998, entitled "Breeding Bird Response to Herbicide-Induced Vegetation Changes on Clearcuts in the Virginia Hills, Alberta". Preliminary results indicated that glyphosate and hexazinone treatment had no effect on bird species richness and total abundance within clearcuts during two years post-treatment.

Breeding Birds Habitat Impact
Herbicide Treatment
Aerial Application
Blue Ridge Lumber
Density Management