In the second experiment, the algae were dosed with the same extract concentrations, but the extract was not added until the algae were in exponential growth phase (day 6). Both experiments also had control treatments (i.e. no extract) and each extract and control treatment was replicated ...
Emphasis is placed on the need to distinguish rate-limitation from capacity-limitation, to understand which is more manageable and why, to discern the mechanisms of internal recycling and their importance, and to appreciate the respective roles of physical and biotic components in local control of ...
V. 1976. The influence of daylength, light intensity and temperature on the growth rates of planktonic blue-green algae. British Phycological Journal 11:151–163. Article Google Scholar Ganf, G. G. 1974. Phytoplankton biomass and distribution in a shallow eutrophic lake (Lake George, Uganda)...
It has been shown that rates of excretion of organic matter by algae are a function of the relative growth rate of the algae in culture 1,2 . In conditions of constant light, there is a tendency for the net excretion rate to be more or less constant initially and then to approach zero...
Bottom-up effects%Ciliates%Cyanobacterial blooms%Heterotrophic nanoflagellates%Metazooplankton%Top-down control Previous studies have shown that ciliate plankton is generally controlled by food resources (e.g., algae) and predators (e.g., metazooplankton). Among lake... Jing,Li,Feizhou,... - 《...
The rise and fall of plankton: long-term changes in the vertical distribution of algae and grazers in Lake Baikal, Siberia. Plos One 9, e88920, doi: 10.1371/journal.pone.0088920 (2014). 39. Ibelings, B. W., Vonk, M., Los, H. F. J., van der Molen, D. T. & Mooij, W. M...
A previous study based on data from a NE Atlantic site provided evidence, using an existing foodweb/vertical-flux modelling approach, that the size-structure of the phytoplankton community — rather than primary production — can be the dominant control on downward particulate organic carbon (POC)...
Laboratory growth experiments with two blue-green algae, Oscillatoria redekei Van Goor and Oscillatoria agardhii Gomont showed improved growth efficiencies under light/dark cycles compared with continuous light. This was due to photosynthetic production in the light period in excess of the protein synthes...
These organisms can be parasites of algae, fish, bivalves and amphibians. Parasitism on benthic invertebrates and macrophytes may have a potential impact on the planktonic community by top-down interactions since littoral can be considered extending to the whole lake in many small mountain lakes. ...
Experiments on the uptake of fluorescently labelled particles in different size classes and fluorescently labelled bacteria and algae permitted the determination of the importance of those kinds of food. Vorticella rhabdostyloides ingested particles about 1.0 μm and 3 μm long and autotrophic pico...