Lake Water Quality 2006 Report - Lakefield Herald

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algal biomass on tapegrass and Eurasian milfoil and then compared differences inbiomass levels across four lakes. The results were somewhat surprising. Theresearchers had expected to find more algal growth on the milfoil but higher amountswere found on the tapegrass, possibly due to the effects of zebra mussels increasinglight in the water column, the excretion of algae-resistant compounds by the Eurasianmilfoil or grazing insects on the milfoil. Further research is needed. The second partof the study showed large differences within the four lakes studied (Pigeon, Lovesick,Stony and Sturgeon). This research provides useful baseline data for monitoring therisk of transition of the Kawartha Lakes to an algae-dominated state.E.coli bacteria test resultsKLSA volunteers tested 116 sites in 14 lakes 6 times during the summer for E.colibacteria. Samples were analyzed by SGS Lakefield Research. Public beaches areposted as unsafe for swimming when levels reach 100/E.coli/100 mL of water. KLSAbelieves that counts in the Kawartha Lakes should not exceed 50/E.coli/100 mL. In2006, E.coli levels continued to be low with 77 of the sites considered “very clean”,23 “clean”, 3 “slightly elevated” and 8 “needing observation”. Most of the highercounts were likely due to waterfowl (mainly Canada Geese and ducks) or poor watercirculation in shallow, dead-end bays.KLSA is grateful to the many volunteers who participate in our monitoring programsand to the scientists who are assisting us with our studies.10
Map of the Kawartha Lakes 2006 Testing Area11
Page 1: Kawartha Lake Stewards AssociationW
Page 4 and 5: Table of ContentsPresident’s Mess
Page 6 and 7: President’s Message2007 will be t
Page 8 and 9: species-at-risk and shoreline and i
Page 10: There are 3 different “phosphorus
Page 15 and 16: subsequently deposited formations n
Page 17 and 18: These problems were solved with the
Page 19 and 20: Burleigh fallsThe cataracts effecti
Page 21 and 22: to estimate how much phosphorus is
Page 23 and 24: levels of these two inflows. Big Ba
Page 25 and 26: Low Phosphorus Lakes35.0030.0025.00
Page 27 and 28: The high flow/low phosphorus theory
Page 29 and 30: Phosphorus Levels over 5 Years (eac
Page 31 and 32: Flow vs Phosphorus, 200530030Flow,
Page 33 and 34: Many other sources of phosphorus to
Page 35 and 36: eductions in phosphorus discharges
Page 37 and 38: Ontario’s Natural Resources and V
Page 39 and 40: the Base Flow Index (BFI) and perce
Page 41 and 42: systems and animal feces (beef, pou
Page 43 and 44: ANOVA analysis as no suitable data
Page 45 and 46: 3530Phosphorus (µg/l)252015105a ab
Page 47 and 48: How Much Algae Sticks to Macrophyte
Page 49 and 50: sites for both lakes (Pigeon Lake S
Page 51 and 52: The results from our initial survey
Page 53 and 54: Are our lakes at risk of switching
Page 55 and 56: Generally, then, the water in the K
Page 59 and 60: Appendix A:KLSA Mission Statement,
Page 61 and 62:
Appendix B: Financial PartnersParks
Page 63:
Date Expenses04-Jan-06 Bank Fees 3.
Page 68 and 69:
At your request, subject to applica
Page 70 and 71:
Lake-by-Lake E.coli ResultsTo put t
Page 72 and 73:
To put the results in perspective:
Page 74 and 75:
Page 76 and 77:
Page 78 and 79:
Page 80 and 81:
Page 82 and 83:
Page 84 and 85:
LAKE NAME Site Description DateSecc
Page 86 and 87:
Page 88 and 89:
Page 90 and 91:
Appendix G: GlossaryAquatic plants
Page 92 and 93:
plants. In the Kawartha Lakes area,
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