Phytoplankton species distribution in Crater Lake, Oregon, 1978-1980
Geiger NS and Larson DW. 1990. Phytoplankton species distribution in Crater Lake, Oregon, 1978-1980. Pages 153-165. In Drake ET, Larson GL, Dymond J, Collier R (ed): Crater Lake: An ecosystem study. Corvallis, Oregon. June 18-22, 1988. San Francisco. 69th Annual Meeting of the Pacific Division/American Association for the Advancement of Science
"The vertical distribution of phytoplankton in Crater Lake was examined by obtaining samples during 1978, 1979, and 1980 at the surface and at 20 m intervals to 200 m at a single station in the deepest basin of the lake. Samples were partitioned into material retained by and passed through a 10 micrometer mesh net. The fraction passed through the net composed predominantly of diatoms, consistently comprised the highest percentage of the total densities. Recurring vertical distribution patterns of dominant species in combined fractions were observed through the three years with Nitzschia gracilis commonly more abundant at the surface in late summer, Tribonema affine more frequently found at mid-depths sampled, and Stephanodiscus hantzschii more frequently fount at the lowest depths sampled. Similar distributions were observed in sampling four widely-spaced stations in the lake on the same day."
- Type
- Conference Proceeding Paper
- Authors
- Geiger, N; Larson, D
- Units
- CRLA
- Keywords
- Abundance (Biodiversity), Aquatic Sciences, Distribution, Distribution (Biodiversity), Limnology, Observations, Phytoplankton, Plant Studies, Presence (Biodiversity), vertical distribution