caa a22 4500 467904839 CHVBK 20180406152830.0 cr unu---uuuuu 170328e20060401xx s 000 0 eng 10.1007/s10661-006-7237-x doi (NATIONALLICENCE)springer-10.1007/s10661-006-7237-x Variations in Epilimnion Thickness in Small Boreal Shield Lakes: Relationships with Transparency, Weather and Acidification [Elektronische Daten] [W. Keller, Jocelyne Heneberry, Julie Leduc, John Gunn, Norman Yan] We used multiple linear regression analysis to investigate relationships between late-summer epilimnion thickness, transparency, lake area, acidity and summer weather conditions in a large ($n = 116$) multi-year data set for 9 small Boreal Shield lakes. Dissolved organic carbon (DOC) was the best individual predictor of late summer epilimnion thickness ($r^{2} = 0.69$). Total chlorophyll~$a$, the number of days between ice-out and late-summer stratification, and lake area collectively explained an additional 14% of the variation in epilimnion thickness. The three attributes of summer weather that we examined, mean daily temperature, mean daily wind speed, and mean daily hours of bright sunshine, did not add to the predictive ability of our regression model. Lake acidity also did not add directly to the predictive ability of the model, likely because DOC concentrations already reflected the effects of pH. Our study supports an increasing body of evidence indicating that the dominant effects of climate change on lake thermal structure in small lakes will be through effects on processes that affect lake transparency. Springer Science + Business Media, Inc., 2006 acidification nationallicence Boreal Shield nationallicence climate nationallicence dissolved organic carbon nationallicence epilimnion nationallicence lakes nationallicence transparency nationallicence weather nationallicence Keller W. Ontario Ministry of the Environment, Cooperative Freshwater Ecology Unit, Laurentian University, Sudbury, Ontario, Canada aut Heneberry Jocelyne Ontario Ministry of the Environment, Cooperative Freshwater Ecology Unit, Laurentian University, Sudbury, Ontario, Canada aut Leduc Julie Cooperative Freshwater Ecology Unit, Department of Biology, Laurentian University, Sudbury, Ontario, Canada aut Gunn John Cooperative Freshwater Ecology Unit, Department of Biology, Laurentian University, Sudbury, Ontario, Canada aut Yan Norman Department of Biology, York University, 4700 Keele Street, Toronto, Ontario, Canada aut Environmental Monitoring and Assessment Kluwer Academic Publishers 115/1-3(2006-04-01), 419-431 0167-6369 115:1-3<419 2006 115 10661 https://doi.org/10.1007/s10661-006-7237-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-006-7237-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Keller W. Ontario Ministry of the Environment, Cooperative Freshwater Ecology Unit, Laurentian University, Sudbury, Ontario, Canada aut NATIONALLICENCE 700 1- Heneberry Jocelyne Ontario Ministry of the Environment, Cooperative Freshwater Ecology Unit, Laurentian University, Sudbury, Ontario, Canada aut NATIONALLICENCE 700 1- Leduc Julie Cooperative Freshwater Ecology Unit, Department of Biology, Laurentian University, Sudbury, Ontario, Canada aut NATIONALLICENCE 700 1- Gunn John Cooperative Freshwater Ecology Unit, Department of Biology, Laurentian University, Sudbury, Ontario, Canada aut NATIONALLICENCE 700 1- Yan Norman Department of Biology, York University, 4700 Keele Street, Toronto, Ontario, Canada aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 115/1-3(2006-04-01), 419-431 0167-6369 115:1-3<419 2006 115 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer