Ecology and primary productivity of the eulittoral epilithon community: Lake Tahoe, California-Nevada. [Gomphoneis herculeana; Synedra ulna]

Thesis/Dissertation · Wed Jan 01 00:00:00 EST 1986

OSTI ID:6917814

Aloi, J E

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 C/sup 14/ 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.

• Research Organization: California Univ., Davis (USA)
• OSTI ID: 6917814
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
DIATOMS
POPULATION DYNAMICS
PRODUCTIVITY
CALIFORNIA
CARBON 14 COMPOUNDS
ECOLOGY
EXPERIMENTAL DATA
LAKES
MEASURING METHODS
NEVADA
SEASONAL VARIATIONS
TRACER TECHNIQUES
ALGAE
DATA
FEDERAL REGION IX
INFORMATION
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
NORTH AMERICA
NUMERICAL DATA
PLANTS
SURFACE WATERS
USA
VARIATIONS
520101* - Environment
Aquatic- Basic Studies- Radiometric Techniques- (-1989)