Proceedings - Teaching and Learning Centre - Simon Fraser ...
Proceedings - Teaching and Learning Centre - Simon Fraser ... Proceedings - Teaching and Learning Centre - Simon Fraser ...
Fraser River Action Plan 3rd Research Workshop Research Forest of UBC in August - September, 1995. Sixteen plexiglass troughs of about 2.5 m length and 25 cm width were supplied with running water diverted from Mayfly Creek via a pipeline and distribution box. Flow was adjusted such that each trough received approximately 0.1 L/s of water. Heavy metals were added as a constant ratio of dissolved Cu:Mn:Zn:Pb, but at different doses from Marriot bottles at the head of each trough. The ratio of metals and range of doses were based on data for the Brunette River from Dr. Ken Hall. A suite of biological and chemical parameters were measured as response variables. The concentration of heavy metals in effluent water was measured. Samples of leaf tissue which might be an adsorption surface were collected for analysis. Other measures included: • microbial respiration rate on leaf tissue from each trough; • emigration or “drift” rate of macroinvertebrates before and during treatment; • benthos at the end of the experiment; and, • algae — as chl a concentration and as relative abundance. Most of these data sets are nearing completion. We would like to repeat this experiment with greater control over dosing rates and metal speciation in the test mixture. Repeating the experiment would also increase the overall statistical power of the experiment when combined with the 1995 results. Next Steps We need to put all these data together for publication. The direct comparison of experimental results to the community structure of lower Fraser basin streams will allow us to test the prediction that the species that show sensitivity to heavy metals additions are those that are absent from natural streams. We have now compiled a large data set on stream communities in the lower Fraser basin including urban, agricultural, forested and montane streams. These data will be compared to determine a series of patterns that have been predicted based on the type of environmental perturbation. Ordination and other gradient analyses will be used to extract these patterns from the data set for community configuration and test for associations with characteristics of the channel and catchment. It appears that some of the lower Fraser basin sites in the Salmon River drainage have fish assemblages similar to those of streams of mostly undeveloped drainages. Thus, the Salmon River sites can be considered as a reasonable reference drainage against which other catchments can be compared, but there are limitations to the degree of inference that can be made from such comparisons. Having further reference sites from drainages other than the Salmon River would permit one to make more definitive statements about the historical state of small streams rather than being constrained by the uncertainty about the uniqueness of the Salmon River watershed. These data will only be useful as a baseline reference if further studies are continued to estimate the degree of variation attributable to several sources to resolve the true long-term mean condition of the system. Our studies are snapshots, but inclusion of a large number of sites reduces that problem somewhat although they can still be temporally autocorrelated signals. The indication that some sites in the Lower Mainland are “healthy” provides a useful point of reference for future studies. Page 123
Fraser River Action Plan 3rd Research Workshop Atmospheric Deposition in the Fraser Valley W. Belzer Environment Canada Objectives: To determine the contribution of the air pathway to the deposition of metals and PAHs to the Still Creek-Burnaby Lake-Brunette River watershed. Location • Burnaby Lake This lake is the centre of several years of aquatic evaluation by the Westwater Research Center at UBC, as a part of the FRAP program. Linkages Metals and PAHs have been measured in this watershed area by the Westwater Research Centre at UBC. There should be some relationship between air, water and sediment measurements. Wet Deposition Definition: To deposit chemicals from the air in a solid or dissolved form, by the action of rain, snow or other precipitation, to the land and water. Dry Deposition Definition: To deposit chemicals, in dry or gaseous form, from the dry air to the land and water by the action of gravity, wind and random motion. Chemicals of Interest • PAHs • Metals Physical Properties • Particulate matter in different size fractions. Page 125
- Page 81 and 82: Fraser River Action Plan 3rd Resear
- Page 83: Fraser River Action Plan 3rd Resear
- Page 87 and 88: Fraser River Action Plan 3rd Resear
- Page 89 and 90: Fraser River Action Plan 3rd Resear
- Page 91 and 92: Fraser River Action Plan 3rd Resear
- Page 93 and 94: Fraser River Action Plan 3rd Resear
- Page 95 and 96: Fraser River Action Plan 3rd Resear
- Page 97 and 98: Fraser River Action Plan 3rd Resear
- Page 99: Fraser River Action Plan 3rd Resear
- Page 106 and 107: Fraser River Action Plan 3rd Resear
- Page 108 and 109: Fraser River Action Plan 3rd Resear
- Page 110 and 111: Fraser River Action Plan 3rd Resear
- Page 112 and 113: Fraser River Action Plan 3rd Resear
- Page 114 and 115: Fraser River Action Plan 3rd Resear
- Page 116 and 117: Fraser River Action Plan 3rd Resear
- Page 118 and 119: Fraser River Action Plan 3rd Resear
- Page 120 and 121: Fraser River Action Plan 3rd Resear
- Page 122 and 123: Fraser River Action Plan 3rd Resear
- Page 124 and 125: Fraser River Action Plan 3rd Resear
- Page 126 and 127: Fraser River Action Plan 3rd Resear
- Page 130 and 131: Fraser River Action Plan 3rd Resear
- Page 134 and 135: Fraser River Action Plan 3rd Resear
- Page 136 and 137: Fraser River Action Plan 3rd Resear
- Page 140 and 141: Fraser River Action Plan 3rd Resear
- Page 148: Fraser River Action Plan 3rd Resear
- Page 151 and 152: Fraser River Action Plan 3rd Resear
- Page 155: Fraser River Action Plan 3rd Resear
- Page 160 and 161: SESSION 4 AGRICULTURAL ISSUES
- Page 166 and 167: Fraser River Action Plan 3rd Resear
- Page 168 and 169: Fraser River Action Plan 3rd Resear
- Page 170 and 171: Fraser River Action Plan 3rd Resear
- Page 172 and 173: Fraser River Action Plan 3rd Resear
- Page 174 and 175: Fraser River Action Plan 3rd Resear
- Page 176: Fraser River Action Plan 3rd Resear
<strong>Fraser</strong> River Action Plan 3rd Research Workshop<br />
Atmospheric Deposition in the <strong>Fraser</strong> Valley<br />
W. Belzer<br />
Environment Canada<br />
Objectives:<br />
To determine the contribution of the air pathway to the deposition of metals<br />
<strong>and</strong> PAHs to the Still Creek-Burnaby Lake-Brunette River watershed.<br />
Location<br />
• Burnaby Lake<br />
This lake is the centre of several years of aquatic evaluation by the Westwater<br />
Research Center at UBC, as a part of the FRAP program.<br />
Linkages<br />
Metals <strong>and</strong> PAHs have been measured in this watershed area by the Westwater<br />
Research <strong>Centre</strong> at UBC. There should be some relationship between air, water<br />
<strong>and</strong> sediment measurements.<br />
Wet Deposition<br />
Definition: To deposit chemicals from the air in a solid or dissolved form, by the<br />
action of rain, snow or other precipitation, to the l<strong>and</strong> <strong>and</strong> water.<br />
Dry Deposition<br />
Definition: To deposit chemicals, in dry or gaseous form, from the dry air to the<br />
l<strong>and</strong> <strong>and</strong> water by the action of gravity, wind <strong>and</strong> r<strong>and</strong>om motion.<br />
Chemicals of Interest<br />
• PAHs<br />
• Metals<br />
Physical Properties<br />
• Particulate matter in different size fractions.<br />
Page 125
Change language