Brian R. Parker

TL;DR: Reducing nitrogen inputs increasingly favored nitrogen-fixing cyanobacteria as a response by the phytoplankton community to extreme seasonal nitrogen limitation, and the lake remained highly eutrophic, despite showing indications of extreme nitrogen limitation seasonally.

TL;DR: The authors found that both climate warming and lake acidification led to declines in the dissolved organic carbon content of lake waters, allowing increased penetration of solar radiation, and suggested that some of the changes in aquatic ecosystems that have been attributed to acidification may in fact have involved increased exposure to ultraviolet light.

TL;DR: A period of prolonged warmer, drier-than-normal weather in northwestern Ontario during the 1970s and 1980s resulted in severe forest fires that caused dramatic changes to lake and stream catchments as mentioned in this paper.

TL;DR: For example, during 20 years of climatic warming, drought and increased forest fires between 1970 and 1990, DOC concentrations declined by 15-25% in lakes of the Experimental Lakes Area, northwestern Ontario, allowing increasedpenetration of both UV and photosynthetically active radiation (PAR).

TL;DR: In this paper, the effects of natural factors (drought and forest fire), and experimental perturbations (fertilization and acidification) on dissolved organic carbon (DOC) concentrations and ratios to other nutrients in lakes of the Experimental Lakes Area were examined using data obtained over a period of 20 years.