Relationship between bacterial and primary production in a newly filled reservoir : Temporal variability over 2 consecutive years

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DOIResolve DOI: http://doi.org/10.1007/s11284-006-0023-y
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TypeArticle
Journal titleEcology Research
Volume22
Issue2
Pages321330; # of pages: 10
SubjectENV; bacterioplankton; bacterial production; chlorophyll a; primary production; new reservoir
AbstractSeasonal and spatial variations in bacterial abundance, biomass and production in a recently flooded reservoir were followed for 2 consecutive years, in conjunction with phytoplankton biomass (chlorophyll a) and activity (primary production). Between the 2 years of the study, the mean value of primary production remained constant, while those of the chlorophyll a concentration, bacterial abundance (BA), bacterial biomass (BB) and bacterial production (BP) decreased. The observed trends of the bacterial variables were linked to changes in the relative importance of allochthonous dissolved organic matter. Moreover, this factor would explain discrepancies observed between the slope of the model II regression equations established from results of the present study and those of the predictive models from the literature, relating to bacterial and phytoplankton variables. An estimate of the carbon budget indicated that 22 and 5% of the ambient primary production in the Sep Reservoir might be channeled through the microbial loop via BP during the 1st and 2nd year of the study, respectively. We conclude that heterotrophic BP in the Sep Reservoir may, on occasion, represent a significant source of carbon for higher order consumers.
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LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedNo
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NRC number49968
NPARC number12740519
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Record identifiercd0f7e4e-89a2-4a78-a356-7ce8a4cf86a4
Record created2009-10-26
Record modified2016-05-09
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