FRR 063

TABLR OF CONTENTS

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FOREWORD . . . . . . . . . . . . . . * . . . . . . . . . . , . . , . . . 1n

SESSION I: Introduction to the Workshop by a panel representing a varietyof interests.

Carnation Creek herbicide workshop. Opening remarks.L. Carlson . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Introduction: Cooperation in resource management.W.W. Bourgeois . . . . . . . . , . . . . . . . . . . . . . . . 4

Introduction: Issues and concerns relating to the use of herbicidesP. Akhurst . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Introductory paper: Fisheries issues.S. Samis . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

SESSION II: Chairman, Errol Caldwell, Program Director, Forest PestHanagement Institute

An overview of Carnation Creek herbicide study: historicalperspective, experimental protocols and spray operations.P.E. Reynolds, J.C. Scrivener, L.B. Holtby, P.D. Kingsbury . .

Carnation Creek flood hydrology September 1984 to September 1985.E. Hetherington . . . . . . . . . . . . . . . . . . . . . . .

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27

Fate of glyphosate in a Canadian forest stream ecosystem.J.C. Feng, D.G. Thompson, P.E. Reynolds . . . . . . . . . . . 45

Persistence and dissipation of glyphosate in foliage and soilsof a Canadian coastal forest watershed.J.C. Feng, D.G. Thompson . . . . . . . . . . . . . . . . . . . 65

Off-target deposit measurements and buffer zones required aroundwater for various aerial applications of glyphosate.N. Payne, J.C. Feng, P.E. Reynolds . . . ~. . . . : . . . . . . 88

SESSION III: Chairman, Jack Dryburgh, MacMillan Bloedel Ltd.

Development of non-commercial vegetation following clearcuttingand clearcutting-plus-slashburning, and some biogeochemicaleffects of herbicidal control of this vegetation.J.P. Kimmins, K.M. Tsze, R.E. Bigley . . . . . . . . . . . . . 110

Effect of glyphosate (ROUNDUP) on biological activity of two forests o i l s .C.M. Preston, J.A. Trofymow ,. f . . . . . . . . . . . . . . . 122

TABLE OF CONTENTS (cont'd)

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SESSION III: (cont’d)

Three-year herbicide efficacy , crop tolerance and crop growthresponse results for a 1984 glyphosate conifer release trialat Carnation Creek, British Columbia.P.E. Reynolds, D.G. Pitt, R. Whitehead, K. King . . . . . . . 141

Comparison of the effects of chemical (glyphosate) and manual coniferrelease on conifer seedling physiology and growth on VedderMountain, British Columbia.J. Karakatsoulis, J.P. Kimmins, R.E. Bigley . . . . . . . . . 168

Crop tolerance of three west coast conifer species to glyphosate.R. Prasad . . . . . . . . . . . . . . . . . . . . . . . . . . 189

SESSION IV: Chairman, Ian Williams, Program Director, Pacific BiologicalStation

Comparative changes in concentration of dissolved ions in the streamfollowing logging, slash burning, and herbicide application(glyphosate) at Carnation Creek, British Columbia.J.C. Scrivener . . . . . . . . . . . . . . . . . . . . . . . . 197

Changes in the temperature regime of a valley-bottom tributary ofCarnation Creek, British Co,lumbia, oversprayed with theherbicide ROUNDUP (glyphosate).L.B. Holtby . . . . . . . . . . . . . . . . . . . . . . . . . 212

Effects of the herbicide ROUNDUP (glyphosate) on periphyton inCarnation Creek, British Columbia.L.B. Holtby, S.J. Baillie . . . . . . . . . . . . . . . . . . 224

Litter-fall and detrital decomposition rates in a tributary ofCarnation Creek, British Columbia, oversprayed with theherbicide ROUNDUP (glyphosate).L.B. Holtby, S.J. Baillie . . . . . . . . . . . . . . . . . . 232

Drift of aquatic invertebrates in a glyphosate contaminatedwatershed.D.P. Kreutzweiser, P.D. Kingsbury . . . . . . . . . . . . . . 250

Salmonid toxicity studies with ROUNDUP.P.M. Chapman . . . . . . . . . . . . . . . . . . . . . . . . . 257

Changes in the invertebrate populations of the main stream and backchannels of Carnation Creek, British Columbia following sprayingwith the herbicide ROUNDUP (glyphosate)J.C. Scrivener, S. Carruthers . . . . . . . . . . . . . , . . 263

TABLE OF CONTENTS (cont'd)

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SESSION IV: (cont’d)

Effects of the herbicide ROUNDUP on coho salmon fingerlings in anoversprayed tributary of Carnation Creek, British Columbia.L.B. Holtby, S.J. Baillie . . . . . . . . . . . . . . . . . . 273

SESSION V: PRRSPECTIVRS

Perspective: Risk management and the public.J. Henigman . . . . . . . . . . . . . . . . . . . . . . . . . 286

Perspective: The effects of forestry use of glyphosate on humanhealth.D. Bowering . . . . . . . . . . . . . . . . , . . . . . . . . 288

SESSION VI: DISCUSSION GROUP PRESENTATIONS

Discussion groups 1 & 2 - SoilsGroup leaders - Mark Walmsley and Terry Lewis . . . . . . . . 294

Discussion group 3 - Water: herbicide characteristics and waterqualityGroup leader - Doug Wilson . . . . . . . . . . . . . . . . . . 295

Discussion group 4 - WaterGroup leader - Dave Wilford . . . . . . . . . . . . . . . . . 297

Discussion group 5 - Aquatic organismsGroup ieader - Steve Samis . . . . . . . . . . . . . . . . . . 300

Discussion group 6 - Aquatic orgamismsGroup leader - Vince Poulin . . . . . . . . . . . . . . . . . 301

Discussion group 7 - WildlifeGroup leader - Harold Armleder . . . . . . . . . . . . . . . . 303

Discussion group 8 - WildlifeGroup leader - Sylvia von Schuckmann . . . . . . . . . . . . . 305

Discussion group 9 - ForestryGroup leader - Dick Kosick . . . . . . . . . . . . . . . . . . 307

Discussion group 10 - ForestryGroup leader - Wayne Coombs . . . . . . . . . . . . . . . . . 309

Discussion group 11 - Spray technologyGroup leader - Dan Cronin . . . . . . . . . . . . . . . . . . 311

TABLE OF CONTENTS (concl.)

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SESSION VI: (cont'd)

Discussion group 12 - Spray technologyGroup leader - John Henigman . . . . . . . . . . . . . . . . . 312

Discussion group 13 - Social concernsGroup leader - David Bowering . . . . . . . . . . . . . . . . 313

Discussion group 14 - Social concernsGroup leader - Paul Pashnik . . . . . . . . . . . . . . . . . 315

SESSION VII: WRAP-UP SESSION

Conference summation: the Carnation Creek herbicide test workshop.M.Halleran . . . . . . . . . . . . . . . . . . . . . . . . . 318

A summary of Carnation Creek herbicide study results.P.E. Reynolds, J.C. Scrivener, L.B. Holtby, P.D. Kingsbilry . . 322

AppendicesSymposium attendees , . . . . . . . . . . . . . . . . . . . . 335