Phosphorus and the Kawartha Lakes - Lakefield Herald

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Lower Kawartha Lakes (Stony, Clear and Katchewanooka Lakes) Jacks Creek (38.78 cfs) Julia Creek (2.32 cfs) Eels Creek (River) (142.61 cfs) Combined unidentified tributaries (Stony/Clear) (43.63 cfs) Lovesick to Stony (2635 cfs) Outlet to Rice Lake via Indian River (429 cfs) Young’s Point (2433 cfs) Total White Lake tributaries (6.18 cfs) Miller Creek (12.79 cfs) Outlet to Rice Lake via Otonabee River (2468 cfs) Combined unidentified tributaries (Katchewanooka) (6.18 cfs) 67
Appendix G Future Considerations The follow ing are three areas for future study: Empirical Modeling of Phosphorus in the Kawarthas Building a lake model is an excellent way of establishing where information/research is needed concerning phosphorus dynamics in the Kawartha Lakes watershed. Contact a modeling professor to see if she/he has any interested students. A comprehensive model needs to incorporate the many components essential to lake nutrient cycling (i.e. residence time, settling velocity, thermocline depth, etc.). Detailed Study of Pigeon Lake Located approximately halfway along the lake chain, Pigeon Lake is an excellent lake to study intensively for the following reasons: Oliver research centre is already located there. (Potential phosphorus projects for undergraduate students) Has two distinct rivers entering the north ends for comparative study of nutrient loads from southern cropland catchments (Pigeon river) and northern forested catchments (Nogies creek). Can test the effect of Bobcaygeon (urbanization, sewage treatment etc.). Quantify the potential for sediments to release phosphorus Quantify the potential for zebra mussels, fish and other invertebrates to excrete phosphorus Quantify the P changes in Pigeon Lake through time There is increasing evidence that Zebra Mussels are not an answer to phosphorus reductions but rather a short-term reduction in phosphorus concentrations that only compounds future challenges in phosphorus regulation (Hecky et al., 2004). Dr. Eric Sager is already working on Macrophyte relationships with phosphorus concentrations; a companion (unified) study with Zebra Mussels would be beneficial as it is highly probable that they are the key players in phosphorus cycling in the Kawartha Lakes. Upstream/Downstream Assessments This is a variant of a traditional control/impact experimental design and very simple to employ. Create six monitoring stations (sampling sites), two above the phosphorus source in question and four at successive intervals downstream (10, 50, 100, 200meters). 68
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Phosphorus and the Kawartha Lakes (
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Table of Contents EXECUTIVE SUMMARY
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List of Tables Table 1.0 Values for
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Figure 5.2 Linear regression of Aug
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mobilization process can be quite c
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1994; MOE, 1976), Ministry of Natur
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IJ 2 IJ 18 IJ 5 IJ 1 IJ 3 Legend IJ
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Take Home Message Previous models o
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Results Although the Kawartha Lakes
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1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 Lam
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Table 4.1 Watersheds employed in la
Page 23 and 24: Results - Multiple Regression Model
Page 25 and 26: 5.0 Past and Present Phosphorus lev
Page 27 and 28: 40 Phosphorus (µg/l) 35 30 25 20 1
Page 29 and 30: Conclusion The majority of the arch
Page 31 and 32: References Bayley, S.E. Prather, C.
Page 33 and 34: Schindler, D.W., 1987. Detecting ec
Page 35 and 36: Appendix A Watershed Land classific
Page 37 and 38: Land Class / Watershed ID 17 18 19
Page 39 and 40: Appendix B Land classification buff
Page 41 and 42: deciduou -0.2521 -0.1579 0.0578 0.2
Page 43 and 44: Pearson and Kendall Correlations wi
Page 45 and 46: Chapter 4 Regressions Buffer Bivari
Page 47 and 48: Bivariate Fit of Average P (ug/l) B
Page 49 and 50: Watershed Accumulation Bivariate Fi
Page 57 and 58: Stats for Figure 5.2 Oneway Analysi
Page 59 and 60: Stats for Figure 5.4 Nonlinear Regr
Page 61 and 62: Data used in Figure 5.2 Year 1971 1
Page 63 and 64: Appendix E Basin Contribution Diagr
Page 65 and 66: Sturgeon Lake 6 Drainage Basins + u
Page 67 and 68: Chemong Lake 1 Drainage Basin 0 5 1
Page 69 and 70: Rice Lake 4 Drainage Basins + up ca
Page 71 and 72: Trent Severn Waterway Flow Overview
Page 73: Central Kawartha Lakes (Sturgeon, K
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Phosphorus and the Kawartha Lakes - Lakefield Herald

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