Proceedings - Teaching and Learning Centre - Simon Fraser ...

More documents

Recommendations

Info

Fraser River Action Plan 3rd Research Workshop CONCLUSIONS • Nutrient concentrations increased from headwaters to downstream of Quesnel and then remained relatively constant to Hope. • Dissolved nutrient concentrations were greatest during lower flows whereas TP was greatest during high flows. • Anthropogenic sources contribute 13% and 5% of the TP downstream of Quesnel, and 12 and 3% of the TP at Hope during low and high flows, respectively. Most of this is from pulp mill effluents. Page 113
Fraser River Action Plan 3rd Research Workshop Objective Anti-Sapstain Toxicology Studies T. Wood, B. Johnston, T. Farrell and C. Kennedy Biological Sciences Simon Fraser University To perform controlled, laboratory-based fish and invertebrate toxicological studies with DDAC and IPBC that will contribute towards Criteria development for anti-sapstain compounds. Rationale Annually, the lumber industry uses a considerable volume of anti-sapstain chemicals to protect cut lumber from stain-forming fungi during storage and transportation. Concern exists over anti-sapstains entering the Fraser River in stormwater runoff. DDAC (didecyldimethylammonium chloride) and IPBC (3-iodo-2-propynyl butyl carbamate) are the principle active ingredients of the anti-sapstain chemicals that have replaced the previously used pentachlorophenates, copper-8-quindinolate and TCMTB (2-(thiocyanomethylthylthio)benzothiozole), all of which have been withdrawn from use over environmental and human health concerns. To date, all toxicological studies on these compounds have been performed primarily by the industry, with little information in the primary refereed literature. The present regulations allow DDAC discharge in stormwater at concentrations of 700 ppb. Approach Pure test chemicals rather than formulations were used. The test species were selected based on availability and relevance to the Fraser River, and, in some cases, to act as reference organisms. The species tested will include: juvenile rainbow trout (reference) juvenile coho salmon (relevant) juvenile starry flounder (relevant) juvenile white sturgeon (relevant) coho embryos (reference) starry flounder embryos (relevant) white sturgeon embryos (reference) fathead minnow (reference) Hyallela azteca (reference) Daphnia magna (reference) Neomysis mercedis (relevant) Mysidopsis bahia (reference) Standard toxicological testing techniques were used to test for lethal and sublethal effects. These included: 96-h LC50 flow-though testing for juvenile fish 24-h or 96-h LC50 static and flow-through testing for fish embryos and larvae 48-h LC50 static testing for invertebrates 24-h exposure for sublethal monitoring of juvenile fish (stress and swimming performance) Page 115
Page 2 and 3:
PROCEEDINGS 3rd RESEARCH WORKSHOP F
Page 4 and 5:
TABLE OF CONTENTS Participants ....
Page 6 and 7:
Development of a Citizen’s Monito
Page 8 and 9:
Fraser River Action Plan 3rd Resear
Page 10 and 11:
Page 12 and 13:
Page 14 and 15:
Page 16 and 17:
Page 18 and 19:
Page 20 and 21:
Page 22 and 23:
Page 24 and 25:
Page 26 and 27:
SESSION 1 PULP MILL EFFLUENT ISSUES
Page 28 and 29:
Page 30 and 31:
Page 4 - t 91 8 .--- i I -_-___ Fra
Page 32 and 33:
Page 34 and 35:
Page 36 and 37:
Page 45 and 46:
Page 47 and 48:
Page 49:
Page 57 and 58:
Page 60 and 61:
Page 63 and 64:
Page 65:
Page 68:
Page 72:
Page 78 and 79: Fraser River Action Plan 3rd Resear
Page 83: Fraser River Action Plan 3rd Resear
Page 160 and 161: SESSION 4 AGRICULTURAL ISSUES
Page 174 and 175:
Page 176:
Page 192 and 193:
SESSION 5 BIOLOGICAL INDICATORS
Page 194 and 195:
Page 197:
Page 202:
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 222 and 223:
Page 224 and 225:
Page 226 and 227:
Page 228 and 229:
Page 230:
Page 237 and 238:
Page 239:
SESSION 6 ESTUARY ISSUES
Page 242 and 243:
Page 248 and 249:
Fraser River Action Plan The Use of
Page 250 and 251:
Page 255 and 256:
Page 260 and 261:
Page 269 and 270:
Fraser River Action Plan Concluding
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295:
show all

Proceedings - Teaching and Learning Centre - Simon Fraser ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?