Solar ultraviolet photodegradation of DOC may stimulate freshwater food webs

The UV component in solar radiation increased the availability of DOC for bacterial growth, and led to an increase in bacterial and bacterivore abundance in laboratory plankton cultures. UV radiation may thus stimulate ecosystem productivity by increasing dissolved organic carbon lability and facili...

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Bibliographic Details
Published in:Journal of plankton research 2003-01, Vol.25 (1), p.111-117
Main Authors: De Lange, Hendrika J., Morris, Donald P., Williamson, Craig E.
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
bacterial-growth
Biological and medical sciences
carbon
Dissolved organic carbon
dissolved organic-matter
Food webs
Fresh water
Fresh water ecosystems
Freshwater
Fundamental and applied biological sciences. Psychology
Inland water environment
Lability
lakes
marine bacterioplankton
nitrogen
nutrients
photochemical transformation
Photodegradation
Plankton
radiation
Solar radiation
surface
Synecology
Trophic levels
U.V. radiation
Ultraviolet radiation
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Summary:The UV component in solar radiation increased the availability of DOC for bacterial growth, and led to an increase in bacterial and bacterivore abundance in laboratory plankton cultures. UV radiation may thus stimulate ecosystem productivity by increasing dissolved organic carbon lability and facilitating the transfer of carbon to higher trophic levels via the microbial loop.
ISSN:0142-7873
1464-3774
1464-3774
DOI:10.1093/plankt/25.1.111