Changes in the thermal stability of Lake Simcoe from 1980 to 2008

Importance of climate change-physical forcing on the increase of cyanobacterial blooms in a small, stratified lake

“…In our lake, Pannard et al (2011) demonstrated that metalimnetic photosynthetic productivity fluctuated between ±20% to 25%. Similar results were found by Evans et al (2011), who compared primary production incubation results from fixed versus moving depths (simulating internal waves of 0.5 -1 m amplitude). Both studies found that primary production responses differed in relation to incoming irradiance, and that rates were lower still when cloud cover occurred.…”

“…The consequences of such changes on the thermal regime in lakes have already been reported, including shorter periods of ice-cover, changes in water column density, and the earlier onset and longer duration of stratification (De Stasio et al, 1996;Peeters et al, 2002;Stainsby et al, 2011). In addition, increasing precipitation is modifying watershed hydrology, intensifying runoff, and likely increasing nutrient loading (Parry et al, 2007).…”

Effects of Climate Change on Lake Thermal Structure and Biotic Response in Northern Wilderness Lakes

“…Winder and Schindler [73] documented increased stability in Lake Washington (King County, WA, USA) between 1962 and 2002 that was accompanied by earlier onset and longer duration of stratification. Similar trends were also shown for Lake Simcoe (Barrie, ON, Canada), where the lake was experiencing six additional days of stratification between 1980 and 2008 [74]. Increased stability and duration of stratification is not limited to northern lakes, as stratification patterns have been more affected globally in deep lakes [66].…”

Changeability of Accumulated Heat Content in Alpine-Type Lakes

“…It should be noted that since the late '90s the annual average heat contents were never below 160,000 GJ. Changes in the thermal dynamic of lake water volume, for instance, result in the shorter duration of ice cover or changes in water circulation [28]. The increasing heat accumulated in the water of Morskie Oko has also resulted in shorter ice cover duration - [29] assessed as having decreased by 10 days·dec -1 .…”