Abstract:
:This study examined the effects of temporal changes in bacterial community composition (BCC) and environmental factors on potential ectoenzymatic activities (alpha-glucosidase, beta-glucosidase, alkaline phosphatase and leucine aminopeptidase) in a lacustrine ecosystem (Sep reservoir, France). BCC was assessed by terminal restriction fragment length polymorphism. Physical parameters, and inorganic and organic nutrient concentrations (dissolved carbohydrates and proteins) were measured in lakes and tributaries. According to the multivariate statistics (redundancy analysis), physical and chemical factors explained the largest part of leucine aminopeptidase activity, whereas the temporal changes of other ectoenzymatic activities were partly dependent on the variations in the BCC. In particular, the occurrence of occasional bacterial populations seemed to explain a lot of the variation in rates and patterns of polymer hydrolysis. The relation observed in this study between the bacterial structure and activity is discussed within the framework of biodiversity-ecosystem functioning.
journal_name
FEMS Microbiol Ecoljournal_title
FEMS microbiology ecologyauthors
Boucher D,Debroas Ddoi
10.1111/j.1574-6941.2009.00730.xsubject
Has Abstractpub_date
2009-10-01 00:00:00pages
66-78issue
1eissn
0168-6496issn
1574-6941pii
FEM730journal_volume
70pub_type
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