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AbstractAbstract
[en] This dissertation is an investigation into the factors affecting the community dynamics of an epilithic diatom community in Lake Tahoe. Although Lake Tahoe is characterized by extremely low phytoplankton primary productivity, the productivity of the eulittoral (0-2 m) periphyton community is much higher than would be expected in this extremely oligotrophic lake. The eulittoral periphyton community is structured by as stalked diatom, Gomphoneis herculeana, and rosettes of Synedra ulna, with small diatoms living within this matrix. The seasonal cycle of the eulittoral epilithon was monitored through three growing seasons. Biomass was measured once or twice per month at 12-17 sites. Eulittoral primary productivity was also measured monthly at one site, using in situ C14 methodology. Field measurements were combined with laboratory experiments to determine the physical and chemical parameters responsible for both the seasonal periodicity and the site-to-site differences in epilithon biomass and primary productivity
Original Title
Gomphoneis herculeana; Synedra ulna
Primary Subject
Source
1986; 267 p; University Microfilms Order No. 86-14,017; Thesis (Ph. D.).
Record Type
Report
Literature Type
Thesis/Dissertation; Numerical Data
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue