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

Par Conseil national de recherches du Canada

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DOI	Trouver le DOI : https://doi.org/10.1007/s11284-006-0023-y
Auteur	Rechercher : Jugnia, Louis-B.; Rechercher : Sime-Ngando, T.; Rechercher : Devaux, J.
Format	Texte, Article
Sujet	environmental; bacterioplankton; bacterial production; chlorophyll a; primary production; new reservoir
Résumé	Seasonal 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.
Date de publication	2006-08-22
Dans	Ecology Research 22, nº 2 (22 août 2006) : 321–330.
Langue	anglais
Publication du CNRC	Cette publication n’est pas du CNRC Ce sont des publications qui ont été rédigées par un auteur du CNRC, mais avant que celui-ci soit employé du CNRC.
Numéro du CNRC	NRCC 49968
Numéro NPARC	12740519
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Identificateur de l’enregistrement	cd0f7e4e-89a2-4a78-a356-7ce8a4cf86a4
Enregistrement créé	2009-10-26
Enregistrement modifié	2020-04-22

Date de modification :: 2024-04-19