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- Johnson, T. B., et al. Show all 9 Authors
- Aquatic ecosystem health & management 2015 v.18 no.1 pp. 7-17
- chlorophyll; data collection; oligotrophication; phosphorus; regression analysis; silica; spring; summer; surveys; trophic relationships; turbidity; water quality; Lake Ontario
- ... Phosphorus loading declined between the 1970s and the 1990s, leading to oligotrophication of the offshore waters of Lake Ontario during that time period. Using lake-wide data from the intensive field years of 2003 and 2008 and from available long-term data sets on several trophic state indicators (total phosphorus [TP], soluble reactive silica [SRSi], chlorophyll a and Secchi disc transparency [SD ...
- Johnson, T. B., et al. Show all 6 Authors
- Aquatic ecosystem health & management 2012 v.15 no.4 pp. 370-384
- Alosa pseudoharengus; Lepomis macrochirus; Morone americana; Neogobius melanostomus; Perca flavescens; animal communities; boats; community structure; control methods; diet; fish; gears; gillnets; invasive species; mussels; nutrient content; phosphorus; submerged aquatic plants; Lake Ontario
- ... Intensive, long-term sampling in the Bay of Quinte with multiple gears (i.e. gill nets, bottom trawls, trap nets and boat electrofishing) allowed examination of the fish community and major fish populations in the context of key stressors up to 2009. Excessive nutrient input and hyper-abundant non-native fish species, White Perch and Alewife, shaped the depreciated fish community of the 1970s. Aft ...