This study is concerned with the projection of climate change effects on lakes,
especially small lakes with surface areas up to 10 kttr and depths up to 24 m in the cold
regions of the contiguous U.s. In this study, we have chosen lake parameters which are
most directly influenced by climate and which in turn have much influence on aquatic
lifeforms, water quality and water uses. The first two parameters studied were lake water
temperature (T) and dissolved oxygen (DO) concentration. They have been estimated for
past (1961-1979) climate conditions (Vol. 1 of this report) and a projected 2xC02 climate
scenario (Vol. 2). Subsequently fish habitat in lakes, as constrained by T and DO, has
been studied herein. In this Volume 3 of the report, water temperature and DO criteria
(limits) of survival and good-growth of three fish assemblages (cold-water, cool-water,
and warmwater), and parameters that quantify fish habitat in lakes in response to T and
DO limits are given. Fish habitat was simulated in 27 types of lakes at 209 geographic
locations over the contiguous U.S. under different climate scenarios. It includes a.
validation of fish habitat simulations against fish observations and a sensitivity analysisof
simulated winter fish habitat to three DO survival limits.
Fang, Xing; Alam, Shoeb R.; Stefan, Heinz G..
Continental-Scale Projections of Potential Climate Change Effects on Small Lakes in the Contiguous U.S. Vol. 3 Effects of Climate Conditions on Fish Habitat.
St. Anthony Falls Laboratory.
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