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- W1530638280 abstract "The decomposition and microbial colonization of Carex leaf litter were examined in an arctic lake in Alaska during the summer of 1978. Dried leaf segments in screen bags were placed at various locations and depths for 13 and 26 days. Weight loss varied from 24.15 to 33.56% and from 27.69 to 65.01% after 13 and 26 days, respectively. Abiotic controls lost approximately 19.5% with no subsequent change. Weight loss significantly correlated with microbial colonization as measured by alkaline phosphatase activity ( r = 0.780), cellulase activity ( r = 0.613), heterotrophic CO 2 fixation ( r = 0.835), and acetate incorporation into microbial lipids ( r = 0.618). Alkaline phosphatase activity correlated with cellulase activity ( r = 0.889), and heterotrophic CO 2 fixation correlated with acetate incorporation into lipids ( r = 0.712). Weight loss after 26 days inversely correlated with the logarithm of the depth of incubation regardless of whether incubation occurred on the sediment surface or in the water column. These findings suggest that a rapid initial period of microbial colonization is driven by nutrients derived from the litter and that the rate of these processes is controlled by a factor(s) inversely related to the logarithm of depth, such as light intensity, primary production, or turbulence." @default.
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- W1530638280 date "1980-04-01" @default.
- W1530638280 modified "2023-09-23" @default.
- W1530638280 title "Microbial Colonization and Decomposition of Carex Litter in an Arctic Lake" @default.
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- W1530638280 doi "https://doi.org/10.1128/aem.39.4.888-893.1980" @default.
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