Diatoms in lakes and lake sediments as an index to environment. Final report, Part 2. A study of phytoplankton distribution, lake classification, and trophic indicators in Minnesota lakes
This study was designed to investigate patterns of phytoplankton distribution, to contrast schemes of lake classification based on chemical and biologic criteria, and to evaluate properties of net phytoplankton, whole-water communities, and diatom assemblages as indicators of trophic state. The number of net taxa, desmids, and the compound quotient is correlated with the trophic gradient, but diatom ratios and the diversity of these assemblages are not so correlated. Conversely, the standing crop of phytoplankton and species diversity in whole-water samples exhibit statistically significant correlations with regional gradient parameters. Typological studies reveal that lake groupings based on different sets of variables are dissimilar in size, composition, and location, especially those that involve biologic variables. Algal properties that exhibit distinct trophic preferences are the numbers of net taxa and desmids, standing crop, and species number of wholewater communities. Desmids, chrysophytes, diatoms, and bluegreen algae contain taxa that are indicators of oligotrophy and mesotrophy. (auth)
- Research Organization:
- Minnesota Univ., Minneapolis (USA)
- Sponsoring Organization:
- AEC
- NSA Number:
- NSA-29-028901
- OSTI ID:
- 4337228
- Report Number(s):
- COO--2046-2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Before and after studies of the effects of a power plant installation on Lake Lyndon B. Johnson: phytoplankton succession and the productivity of individual algal species. Interim report No. 7
Phytoplankton and physical-chemical conditions in selected rivers and the coastal zone of Lake Michigan, 1972
Studies of Adirondack Mountain (N. Y. ) lakes: limnological characteristics and sediment diatom - water chemistry relationships
Technical Report
·
Sat May 01 00:00:00 EDT 1976
·
OSTI ID:6818494
Phytoplankton and physical-chemical conditions in selected rivers and the coastal zone of Lake Michigan, 1972
Technical Report
·
Mon Dec 31 23:00:00 EST 1979
·
OSTI ID:5008748
Studies of Adirondack Mountain (N. Y. ) lakes: limnological characteristics and sediment diatom - water chemistry relationships
Thesis/Dissertation
·
Thu Dec 31 23:00:00 EST 1981
·
OSTI ID:6134713