Nutrient enrichment and eutrophication of Lake Michigan. Progress report, July 1, 1975--June 30, 1976
Studies were conducted on relationships between phytoplankton and major nutrients. Data were collected on species composition and abundance of phytoplankton and on chlorophyll a, primary productivity, phosphorus silica, nitrate, ammonia, pH, chloride, specific conductance, water temperature, and transparency. Open lake studies confirmed a predicted shift in species composition from diatoms to blue-green algae in the epilimnetic waters and offered evidence that silica limitation is the major factor restricting diatom abundance. Studies on tributaries showed great differences in chemical parameters and phytoplankton composition in the three rivers, Grand, Kalamazoo, and St. Joseph. Cruises were conducted to study the Grand River and the Grand River plume in Lake Michigan; it was found that nutrient levels were high during high flow conditions regardless of the time of year. Chemostat studies are being conducted with diatoms. (HLW)
- Research Organization:
- Michigan Univ., Ann Arbor (USA). Great Lakes Research Div.
- OSTI ID:
- 7361437
- Report Number(s):
- COO-2003-26
- Country of Publication:
- United States
- Language:
- English
Similar Records
Phytoplankton and physical-chemical conditions in selected rivers and the coastal zone of Lake Michigan, 1972
Nutrient enrichment and eutrophication of Lake Michigan. Final report, November 1 1969-September 30, 1981
Related Subjects
Aquatic-- Basic Studies-- (-1989)
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALGAE
AMMONIA
AQUATIC ORGANISMS
BIOLOGY
BIOMASS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHLOROPHYLL
DIATOMS
ELEMENTS
ENERGY SOURCES
GREAT LAKES
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
LAKE MICHIGAN
LAKES
MINERALS
MONITORING
NITRATES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
NUTRIENTS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PHOSPHORUS
PHYTOCHROMES
PIGMENTS
PLANKTON
PLANTS
PLUMES
PORPHYRINS
RENEWABLE ENERGY SOURCES
RIVERS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
STREAMS
SURFACE WATERS
TAXONOMY
TEMPERATURE DISTRIBUTION