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Simulated long term temperature and dissolved oxygen characteristics of lakes in the north‐central United States and associated fish habitat limits
Author(s) -
Stefan H. G.,
Hondzo M.,
Fang X.,
Eaton J. G.,
McCormick J. H.
Publication year - 1996
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1996.41.5.1124
Subject(s) - trophic level , environmental science , latitude , secchi disk , trophic state index , stratification (seeds) , climate change , surface water , hydrology (agriculture) , habitat , atmospheric sciences , ecology , eutrophication , geography , geology , biology , nutrient , seed dormancy , botany , germination , geotechnical engineering , geodesy , dormancy , environmental engineering
Water temperatures and dissolved oxygen (DO) concentrations in lakes are related to climate. Temperature and DO in 27 lake classes (3 depth classes × 3 surface area classes × 3 trophic states) were simulated by numerical models with daily weather data input. The weather data used are from the 25‐yr period 1955– 1979. The lakes and the weather are representative of the north‐central U.S. Daily profiles of water temperature and DO concentrations were computed and several temperature and DO characteristics extracted from this information base. Temperature and minimum oxygen requirements for good growth of cold, cool, and warm water fish were then applied to determine the length of the good‐growth periods and the relative lake volumes available for good growth. All characteristics are presented in graphical form using lake surface area, maximum lake depth, and Secchi depth as independent variables. The surface area and maximum depth were combined in a lake geometry ratio which is a relative measure of the susceptibility of a lake to stratification; Secchi depth was retained as a measure of lake transparency and trophic state. To determine an effect of latitude, we investigated a southern and northern region separately. The effect of climate change due to a projected doubling of atmospheric CO 2 was investigated by applying the output from the GISS 2 × CO 2 global circulation model to the lake models.