Can freshwater planktonic ciliates survive on a diet of picoplankton?
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چکیده
منابع مشابه
Freshwater autotrophic picoplankton : a review
Autotrophic picoplankton (APP) are distributed worldwide and are ubiquitous in all types of lakes of varying trophic state. APP are major players in carbon production in all aquatic ecosystems, including extreme environments such as cold ice-covered and/or warm tropical lakes and thermal springs. They often form the base of complex microbial food webs, becoming prey for a multitude of protozoan...
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Bacterivory in eutrophic Lake Oglethorpe, Georgia, was determined by direct observation of tracer particle uptake by all members of the planktonic community. Heterotrophic flagellates dominated grazing at all times, accounting for 49-8 1% of grazing on an areal basis and up to 98% of grazing at some depths. Pigmented (mixotrophic) flagellates were major grazers during winter and spring blooms, ...
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On the basis of correlative studies, picoplankton in Calder Lake, New York, are apparently unaffected by seasonal fluxes in nutrient (N and P) levels. In this small eutrophic lake, picoplankton (<2.0- to 0.2-mum size) and nanoplankton (<20 to >2 mum) predominate. Microplankton (>20 mum) are typically least important. Experiments were conducted in situ to test whether N, P or N/P ratios affect t...
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A method was developed to allow direct measurements of predation exerted by metazooplankton on ciliates. The method relied on the use of ciliates labelled with fluorescent microparticles (FMP). Optimal labelling conditions were determined with ciliates from cultures (Tetrahymena pyriformis) and with natural ciliate assemblages sampled in a river. Labelled T. pyriformis were used as tracer food ...
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ژورنال
عنوان ژورنال: Journal of Plankton Research
سال: 1996
ISSN: 0142-7873,1464-3774
DOI: 10.1093/plankt/18.4.597