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Isle and Hasse Lakes Fisheries Restoration Isle and Hasse Lakes Fisheries Restoration

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Isle and Hasse Lakes Fisheries Restoration Isle and Hasse Lakes Fisheries Restoration Isle and Hasse Lakes Fisheries Restoration Isle and Hasse Lakes Fisheries Restoration Backgrounder: Isle Lake: • 23 km2 surface area, 246 km2 drainage basin area • 7.5 m maximum depth, 4.1 m average depth • Hyper-eutrophic • NRPK, WALL, YLPR Hasse Lake: • 0.9 km2 surface area, 7.4 km2 basin • 9.4 m max depth, 3.5 m avg. depth • Hyper-eutrophic • RNTR… YLPR, NRPK, WALL Isle and Hasse Lakes Fisheries Restoration • Project Motivation and Conservation Need • Water quality concerns • Eutrophication • Fish populations “Hasse Lake Water Contaminated” – Spruce Grove Examiner, 25 July 2014 “Public advised to stay out of Hasse Lake’s Contaminated Water” – Edmonton Journal, 27 July 2015 “Thousands of sucker fish gasping for air because of oxygen deficiency at Lake Isle” – Edmonton Journal, 10 April 2014 Isle and Hasse Lakes Fisheries Restoration • Identified issues • Nutrient budget imbalance • Land use changes • Ecosystem changes • Interactions of economic, environmental, political issues Isle and Hasse Lakes Fisheries Restoration What role for ACA? • Landscape Restoration • Riparian habitat improvements • Wetland retention / creation • Public lands policy • Examine wetland management • Survey and data collection • Provide communication tools 2015 – 2016 Project Activities • Community engagement • Isle Lake test netting • Hasse Lake water quality Isle and Hasse Lakes Community Engagement Many Stakeholders • Sturgeon River Watershed Alliance (TAC) • Parkland County / County of Lac Ste. Anne ALUS programs • Lakes of Parkland County • Lake Isle and Lac Ste Anne Water Quality Management Society • North Saskatchewan Watershed Alliance • Alberta Environment and Parks • Jack Pine Grazing Association A very supportive network! Isle Lake Test Netting • Objective to determine fish community composition • Multi-mesh, gill nets used • Random locations selected • Six overnight sets fished Isle Lake Test Netting 2015 Test Netting Results • “Pleasantly Shocked – suspended netting after one day, based on catch and with confidence we had a snapshot of the current community Isle Lake Test Netting • Some questions… – Most fish were mature – Most fish were female Isle Lake Test Netting • Some (more) questions… potential answers? – Most fish were large Northern Pike length (mm) weight (g) min 388 375 max 803 3364 avg 604 1527 length (in) weight (lb) min 15 0.8 max 32 7.4 avg 24 3.4 Walleye length (mm) weight (g) min 565 1737 max 622 2550 average 589 2045.25 length (in) weight (lb) min 22 3.8 max 25 5.6 average 23 4.5 Hasse Lake Water Quality • What did we see? Hasse 2015 Total Phosporus Maricas and 0.45 Malone (1984) 0.4 0.35 0.3 Hasse Chlorophyll A 2015 0.25 120 Barica 0.2 (1975) 0.15 100 0.1 80 0.05 0 60 40 20 0 Hasse Lake Water Quality • What did we see? Ecoli E.coli / Fecal Coliforms 250 Fecal Coliformes Dissolved Oxygen 6/8/2015 CCME / AHS 6/25/2015 Guidelines 200 14 7/23/2015 12 8/18/2015 150 10 9/2/2015 100 8 Stress Death 6 50 4 0 2 0 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 Hasse Lake Water Quality • Questions to explore… – Source of fecal coliforms – Potential for gull management – Effect trophic interaction manipulation – Potential for Aeration – Potential for other in-lake manipulations Isle and Hasse Lakes Fisheries Restoration Going Forward… • 2016 – 2017 Project Activities • Riparian health assessments (Isle Lake and SR upstream) • Water quality data collection • Investigate potential restoration opportunities and complete habitat projects Isle and Hasse Lakes Fisheries Restoration Questions / Comments Many Thanks! .
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