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Phagotrophy by a flagellate selects for colonial prey: A possible origin of multicellularity
Self-replicating, stable colonies of Chlorella vulgaris that retained the eight-celled form indefinitely in continuous culture and when plated onto agar were virtually immune to predation by the flagellate.
Population dynamics of food‐limited rotifers in two‐stage chemostat culture1,2
- M. Boraas
- Environmental Science
- 1 May 1983
Although most observations are qualitatively similar to data from heterotrophic microbial chemostat studies, a close fit to the rotifer steady state observations was obtained only when K was assumed to be variable rather than constant and Numerical simulations of the same model only approximately reproduced transient data.
Selenium uptake and transfer in an aquatic food chain and its effects on fathead minnow larvae
The transfer of Se was followed through a laboratory food chain (wateralgae-rotifer-larval fish) and its effect on larval fathead minnows (Pimephales promelas) and Selenium transfer between algae and rotifers was a function of time and food availability.
Variations in Sediment Accumulation Rates and the Flux of Labile Organic Matter in Eastern Lake Superior Basins
Determination of Eubacterial and Cyanobacterial Size and Number in Lake Baikal Using Epifluorescence
The results indicate that Lake Baikal picoplankton size and density are similar to other large lakes but may have a more diverse community structure than in other large oligotrophic lakes.
A demographic profile of the fastest growing metazoan: a strain of Brachionus calyciflorus (Rotifera)
Chrysophyte Algae: Mixotrophy in chrysophytes
Influence of experimental conditions on nitrogenous excretion by Lake MichiganMysis relicta (Lovén): laboratory studies with animals acclimated inFragilaria
Rates of excretion of ammonia and urea by Lake MichiganMysis relicta were compared for animals incubated in the presence and the absence of algal food (Fragilaria crotonensis chemostat outflow) and discussed with respect to physiological regulation of nitrogenous waste production.
Comparison of Ecological and Microbial Growth Models
- M. Boraas
This paper argues that models of animal or microbial growth in continuous cultures require that explicit mechanisms of growth limitation be incorporated into the model structure, and suggests that there is a procedural difference between these two approaches.
Catalase activity and red cell metabolism.
Catalase (H2O2:O2 oxidoreductase) is present in high concentrations in several tissues of the human body, among them the liver and the erythrocyte. Erythrocyte catalase is thought to mediate the…