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— 2 — March 25, 2004 <br />recycled to the lake when the plant dies, decays, or goes into senescence. Management of <br />extensive aquatic macrophyte growth may be beneficial to late season nutrient release. <br />Generally we are not concerned with nutrient release over the late fall and winter months <br />because algae blooms are dependant on water temperature at this time. <br />The north basin also serves another important function to the lake ecosystem. This area is <br />probably acting as a spawning area for many fish species and also as a nursery area for <br />young fish. Many species of freshwater fish require macrophytes to lay eggs on. This <br />keeps the fish eggs out of the anoxic sediments and allows oxygenated water to freely <br />pass by the eggs. Northern pike spawning is very dependant on some type of plant growth <br />to adhere their eggs to. <br />High speed boating in this area may cause sediment resuspension, nutrient release from <br />the sediments, and severe damage to the existing aquatic macrophyte community. All of <br />the above mentioned items could be detrimental to the overall water quality and <br />biological health of Peltier Lake. I feel that the area north of the island on Peltier Lake <br />deserves some special protection. <br />Sincerely, <br />Charles Johnson <br />Aquatic Biologist <br />CC: Wayne LeBlanc <br />City of Centerille <br />City of Lino Lakes <br />Correspondence <br />Peltier Lake File <br />• <br />• <br />• <br />