Phosphorus and the Kawartha Lakes - Lakefield Herald

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1 Dense Deciduous 3 2 1 Axis 1 15B 16A 2 20 18A 2 23 4 Recent Cutover 16B 28 13 Open Water 5 7 Sparse Deciduous Pasture Conifer Swamp 8 Mixed Coniferous Cropland -4 0 Treed 4 Bog Deciduous Swamp 12 Mixed Deciduous 30 6 14 22 Open Bog Sparse Coniferous 10 17B 29 Unclassified 31 -2 15A 9 30 4 6 7 13 16 19 26 25 11 12 29 31 28 5 9 10 18 22 15 14 20 21 27 19B 21 25 26 24 17A 19A 18B 27 -6 Axis 2 11 Figure 2.2 PCA ordination of Watershed characterization. Note the majority of the separation is along Axis 1, which demonstrates a clear distinction between forested and agricultural landscapes. Vector length is proportionate to it influence on site separation. This shows graphically the same separation that is shown visually from a land classification map (Figure 2.1). The dashed orange line present in the ordination (left) is transposed on the watershed schematic (right) and demonstrates that the PCA separation in land use is synonymous with the visual separation shown in a land use map. The dashed orange line also represents areas where limestone alvar plain habitat can be found. 7
Take Home Message Previous models of lake phosphorus concentrations and catchment related phosphorus dynamics would be problematic if applied to the Kawartha Lakes area. This is due to the unique situation of having lakes located between two extreme geological features combined with unusually shallow lake systems (most have artificially high water levels due to dam creation for the Trent Severn Waterway, this causes the historical floodplain to be inundated with water, which decrease mean depth and increases littoral habitats where macrophytes can proliferate). The landscape to the south of the Kawartha Lakes is dominated by cultivated land with glacial till, while the area to the north is dominated by forested areas and impermeable bedrock. 8
Page 1 and 2: Phosphorus and the Kawartha Lakes (
Page 3 and 4: Table of Contents EXECUTIVE SUMMARY
Page 5 and 6: List of Tables Table 1.0 Values for
Page 7 and 8: Figure 5.2 Linear regression of Aug
Page 9 and 10: mobilization process can be quite c
Page 11 and 12: 1994; MOE, 1976), Ministry of Natur
Page 13: IJ 2 IJ 18 IJ 5 IJ 1 IJ 3 Legend IJ
Page 17 and 18: Results Although the Kawartha Lakes
Page 19 and 20: 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 Lam
Page 21 and 22: 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 and 74:
Central Kawartha Lakes (Sturgeon, K
Page 75:
Appendix G Future Considerations Th
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