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

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Fraser River Action Plan 3rd Research Workshop Summary of Pollutants and the Intertidal Community Status P.J. Harrison 1 and R.W. Elner 2 1 University of British Columbia 2 Canadian Wildlife Service Environment Canada Conclusions — Three Areas 1. Iona Island — Unique Opportunity • decrease sewage input onto mudflat — follow response • missed rapid response (between 1989-94) • Our three-year time series may represent mid- or near-end point • silver — good tracer for sewage (horizontal distribution) • Zn and Hg still high — but small area • AO site — recovering as indicated by nutrients, chl a, 1 o and 2 o productivity, fish from previous azoic state • benthic invertebrate populations are dynamic and patchy (important implications for monitoring) • Dunlin — overwinters — sustainable population — its toxic loadings are good indicator of health of estuary • birds may be eating meiofauna (
Fraser River Action Plan 3rd Research Workshop 1. Pollutant Status • metals (Hg, Pb, Cd, Zn) • sewage tracer - Ag • organics - PAHs, OCs 2. Abundance and Distribution A. Dominant Primary Producers • benthic microalgae • marsh grasses Deliverables B. Infaunal Macro/Invertebrates (e.g., Macoma, Corophium) C. Fish D. Birds • overwintering Dunlin 3. Estuarine Rate Processes — Influence of Pollutants On A. Nutrient Recycling B. Primary Productivity C. Secondary Productivity D. Bird Predation on Benthic Invertebrates E. Pollutant Transfer from Sediment to Invertebrates to Birds 4. Recovery of Iona Island Site (Present vs. Past Azoic Site) - Review Chapter - Overview of Recovery 5. Baseline Data for A14 (Mouth of Fraser River) - Before Annacis & Lulu Island Convert to Secondary Treatment 6. Increased understanding of Ecology of Mudflat and its Biogeochemical Processes Page 304
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PROCEEDINGS 3rd RESEARCH WORKSHOP F
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TABLE OF CONTENTS Participants ....
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Development of a Citizen’s Monito
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Fraser River Action Plan 3rd Resear
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SESSION 1 PULP MILL EFFLUENT ISSUES
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SESSION 4 AGRICULTURAL ISSUES
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SESSION 5 BIOLOGICAL INDICATORS
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