Kawartha Region Lake Monitoring Cat Jones & Kate Doughty - - PowerPoint PPT Presentation
Kawartha Region Lake Monitoring Cat Jones & Kate Doughty Department of Biology Trent University Annual Sampling of Lakes Limnological Parameters- Water Quality Kawartha Establish Baseline Conditions Region Lake Variability
Annual Sampling of Lakes Limnological Parameters- Water Quality Establish Baseline Conditions Variability between Lakes and between Years Long Term Study of Kawartha Region Lakes Create Opportunities for more Frequent
specific conductivity mS/m dissolved oxygen, concentration mg/L dissolved oxygen, percent saturation mg/L water temperature °C Secchi depth M pH NA total suspended solids mg/L dissolved organic carbon mg C/L absorbance at 350 nm, in absorbance units m-1 molar absorptivity at 280 nm L mol C-1 cm-1 spectral slope ratio NA total phosphorus µg P/L soluble reactive phosphorus µg P/L particulate phosphorus µg P/L total dissolved nitrogen mg N/L nitrate mg N/L ammonium mg N/L chlorophyll a (suspended) mg/L
(~30 Lakes Total)
Kawartha Region Lakes
Anstruther Lake Chandos Lake Catchacoma Lake Clear Lake Coon Lake Crystal Lake Eels Lake Jack Lake
Kawartha Highlands Provincial Park
Adams Lake North Rathbun Lake Cold Lake Bottle Lake Sawmill Lake Compass Lake Sucker Lake Crab Lake Mountain Lake Loon Call Lake Wolf Lake Kasshabog Lake Long Lake Mississauga Lake Mississauga River Picard Lake Salmon Lake Stoney Lake
Lake Cond¹ DO² Temp³ pH TSS⁴ Anstruther 34.2 9.26 23.7 7.17 0.566 Big Cedar 186.5 9.06 24.2 8.19 0.5655 Bottle 22 8.31 24.9 7.24 0.2688 Catchacoma 50.7 9 25.1 7.12 0.3944 Chandos 143.1 9.29 23.7 7.14 0.668 Clear 221.5 9.05 24.9 8.4 1.242 Coon 114.8 9.28 24.9 8.27 0.6875 Crystal 188.7 9.1 25.1 8.42 0.432 Eels 51.4 9.1 25.1 7.51 0.588 Kasshabog 88.6 9 26.1 7.52 0.6067 Long 35.5 8.88 24.9 7.75 0.362 Mississauga 45.1 9.05 22.8 7.72 0.646 Mississauga R.1 48.9 8.92 25.7 7.09 0.347 Mississauga R.2 48.8 8.63 25.7 7.07 Picard 209.8 9.7 22.8 7.86 0.754 Salmon 172.2 9.29 25.2 8.28 0.487 Sucker 22 8.48 24.9 7.91 0.4607
¹ Cond – Conductivity ² DO- Dissolved Oxygen ³ Temp- Temperature ° C ⁴ TSS- Total Suspended Solids
DO Saturation: Balance of primary production and respiration Typical Range (0-100%)
DOC: Related to “brownness” or color of the lake Typical Range (0-15 mg/L)
Total Phosphorus (TP): Higher TP = more algae Typical Range (5-10 ug/L)
Chlorophyll-α : Index of algal biomass Typical range for oligotrophic lakes (3-10 ug/L)
Kawartha Region Lake Monitoring: Kawartha Highland Provincial Park
Region Lakes
Kawartha Region Lake Monitoring: Kawartha Highland Provincial Park
Region Lakes
Comparison of Total Phosphorus (TP) in Lakes Over Time
2 4 6 8 10 12 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 TP (ug/L) Catchacoma Mississagua Picard Cold
Sources of Nutrients
Comparison of some natural vs. unnatural sources
Natural Snow melt Wetlands Pollen Leaf Litter Run off Unnatural Pet Waste Fertilizers Septic Tanks Dumping of
(garden waste/ lawn clippings)
“ If it would not naturally occur within the lake, then it most likely has a negative impact on the water quality of the lake”
How Donors Help & Future Work
Thanks to: Donors- for supporting this research Students- for work in the field and lab Volunteers -for sampling assistance
Image Credit: FourSquare City Guide: Retrieved From: https://foursquare.com/v/catchacoma-lake/4bf991d0b182c9b6b52c795a/photos
Image Credit: FourSquare City Guide: Retrieved From: https://foursquare.com/v/catchacoma-lake/4bf991d0b182c9b6b52c795a/photos