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- W2183655720 abstract "Although periodic mechanical snow removal from the surface of an experimental plot on Rock Lake, southern Manitoba, between January and February did not provide an expected increase of dissolved oxygen levels that would reduce the likelihood of fish winterkill in the localized area of the lake, it provided a basis for analyzing the practicality and feasibility of the method, The minimum lake area to be kept clear of snow for prevention of winterkill was calculated to be 15% of the total lake area. Snow clearing should start soon after freeze-up to provide at least 0.3 gm-2d-1g-m dissolved oxygen needed to compensate for bacterial oxygen uptake during the winter months. Billings, W. D. and K. M. Peterson (1980). Vegetational change and ice-wedge polygons through the thaw-lake cycle in Arctic Alaska. Arctic and Alpine Research. 12 413-432. Abstract: Britton's thaw-lake cycle hypothesis is examined and modified in light of new obser-vations on ice-wedges and revegetation follow-ing drainage of lakes in the wet coastal tundra of arctic Alaska. Two thaw-lakes which were artificially drained in 1950 provided base-line data for the ages of basin surfaces. Sizes of clonal colonies of Eriophorum angustifolium and Carex aquatilis were used in an attempt to age older, naturally drained lake basins. The floristic composition of the vegetation through the cycle is predictable. Pioneer species are Dupontia fisheri and Arctophila fulva. Eriophorum angustifoliuTn is characteristic throughout all of the terrestrial part of the cycle. Carex aquatilis enters the vegetation slowly but is the most successful competitor and dominates the vegetation for perhaps 2000 to 3000 yr. It disap-pears locally when thaw-ponds developing from low-center polygons become too deep. Ice-wedges exist longer than the thaw-lakes and persist beneath them. They reassert them-selves after drainage and are important in re-initiating the polygonal, terrestrial part of the cycle. Drained lake basins are very susceptible to thermokarst erosion when vehicles damage the insulating peat which covers the ice-wedges. Vegetational succession through the thaw-lake cycle is closely attuned to geo-morphic changes and therefore is cyclic. It does not fit most recent models of succession because it is not autogenic but, rather, is controlled by the cold physical environment both above and below ground. Black, R. and W. Barksdale (1949). Oriented lakes of northern Alaska. Journal of Geology. 57 106?-118. Nolan: Annotated bibliography Page 59 of 127 Abstract: No abstract No abstract Black, R. F. (1969). Thaw depressions and thaw lakes: a review. Biuletyn Perylacijalny. 19 131150. Abstract:" @default.
- W2183655720 created "2016-06-24" @default.
- W2183655720 creator A5010549607 @default.
- W2183655720 date "2005-01-01" @default.
- W2183655720 modified "2023-09-24" @default.
- W2183655720 title "An annotated bibliography of research related to the possible long-term impacts of pumping water from tundra ponds for the creation of ice roads" @default.
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