ISSN:
1365-2427
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
SUMMARY. 1. Glycogen, poly-beta-hydroxyalkanoate (PHA) and electron transport system (ETS) activity levels were monitored seasonally in light- and dark-grown biofilms from a North Wales river.2. A spring peak was evident in glycogen, PHA and ETS activity levels per cm2 and per cell, with the exception of PHA per cell, which peaked in the winter.3. There was a seasonal shift in the type of storage product found, perhaps reflecting seasonal changes in carbon sources.4. The light-grown spring biofilm yielded the greatest amount of bio-film storage products per cm2. This should be taken into account during caloric studies of river biofilms as a food source for grazing invertebrates.5. A model is presented of factors influencing storage product deposition in river biofilms. The thickness and cell packing of river biofilms should be noted in future studies. Storage product deposition can occur deep within thick biofilms, irrespective of the river water chemistry.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2427.1991.tb00505.x
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