The effects of water level fluctuations on algal communities of freshwater marshes / Syed M. Hosseini
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TextPublication details: Ames, IA : Iowa State University, 1986.Description: iv, 99 leaves : ill. ; 29 cmOnline resources: Abstract: In 1982, productivity and biomass of epiphyton and phytoplankton and ash free dry weight (AFDW) of filamentous algae were measured in marshes either unflooded or flooded continously for one or two years in an experimental marsh complex in Delta Marsh, Manitoba, Canada.Productivity measurements were made at 19 degrees C +-1 and 15 .E/m2/sec. of PAR in the laboratory using a 14C method. In 1983,epiphyton and phytoplankton productivity and biomass were estimated in two marshes flooded for two years and in five unflooded marshes.Productivity estimates were made both in the field and in the laboratory (175 .E/m2/sec. of PAR and 19 degrees C +-1). Artificial substrata incubated in the marsh were used to estimate epiphyton productivity and biomass. Phytoplankton productivity was estimated using marsh water incubated in 60-ml bottles. Total chlorophyll, chlorophyll-a, carbon and nitrogen were used as estimates of biomass. In 1982, marshes flooded two years had significantly higher filament
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Thesis(Ph.D.)--Iowa State University, 1986.
Includes bibliographical references.
In 1982, productivity and biomass of epiphyton and phytoplankton and ash free dry weight (AFDW) of filamentous algae were measured in marshes either unflooded or flooded continously for one or two years in an experimental marsh complex in Delta Marsh, Manitoba, Canada.Productivity measurements were made at 19 degrees C +-1 and 15 .E/m2/sec. of PAR in the laboratory using a 14C method. In 1983,epiphyton and phytoplankton productivity and biomass were estimated in two marshes flooded for two years and in five unflooded marshes.Productivity estimates were made both in the field and in the laboratory (175 .E/m2/sec. of PAR and 19 degrees C +-1). Artificial substrata incubated in the marsh were used to estimate epiphyton productivity and biomass. Phytoplankton productivity was estimated using marsh water incubated in 60-ml bottles. Total chlorophyll, chlorophyll-a, carbon and nitrogen were used as estimates of biomass. In 1982, marshes flooded two years had significantly higher filament