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

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Fraser River Action Plan 3rd Research Workshop Conclusions To summarize, these results suggested that semi-forested conditions are conducive to maintaining ecosystem balance. Although assemblage trends differed among taxa and were not always consistent across sites, biodiversity for riparian and aquatic fauna should both be maintained under partially forested conditions. Such conditions: 1. allow bank stabilization, contaminant filtering, shading, and detrital input that benefit aquatic invertebrates and fishes; and, 2. maintain floral habitat diversity for riparian wildlife. The trends for habitat and biological diversity may reflect the fact that semi-forested (cottonwood-pine) and unforested (bunchgrass-sagebrush) conditions have historically characterized southern interior stream valleys, such that native riparian and aquatic animals are adapted to partially wooded conditions. Recommendations Habitat and biological trends may not have been consistent across sites because of confounding factors such as urbanization, mining, irrigation, pesticide and other human impacts, as well as differing compositions of riparian-floral species and benthic sediments (not assessed here). Therefore, examination of several biological parameters should provide a more robust assessment of human impacts. Ability to establish biological indicators should be improved by increasing spatio-temporal replication (examining a greater number of sites and comparing samples sollected among seasons) and by conducting manipulative experiments (where possible, such as in northern B.C.). Such efforts will require interdisciplinary coordination. The information provided in the present paper should benefit researchers and managers in the province, by providing solid databases and standardized methodologies for human-impact assessment of inland watersheds. Local (SR-NR) citizens developing biological monitoring programs should find the biological indicators developed here useful for monitoring the success of their tree planting programs. Page 249
Fraser River Action Plan 3rd Research Workshop I. Methodology A. Types of Data 1. % Abundance 2. Density (#/m 2 ) B. Types of Analysis 1. Species Diversity and Richness 2. Factor Analysis 3. Triplet-Wise Ranking C. Riparian and Aquatic Habitat D. Taxa 1. Riparian Invertebrates a. Reptiles, Mammals and Birds 2. Micro- and Macroinvertebrates a. Riparian and Drift b. Benthic 3. Aquatic Nekton (Including Diet Data) a. Fish Larvae and Megainvertebrates b. Juvenile and Adult Fishes E. Environmental Gradients 1. Longitudinal 2. Hydraulic and Bottom-Topographic 3. Lateral and Vertical 4. Floral (Upper-Riparian, 4 Types) a. Forested (FO) b. Semi-Forested (SF) c. Shrubby (SH) d. Grassy (GR) Page 250
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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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