Phosphorus limitation of heterotrophic biofilms from the Fraser River, British Columbia, and the effect of pulp mill effluent

Experiments were conducted to determine the limiting nutrient and the effect of pulp mill effluent (PME) on heterotrophic biofilms in the Fraser River, a northern, temperate river in British Columbia, Canada. Biofilms were cultured by irrigating flow cells with Fraser River water alone (control), or...

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Bibliographic Details
Published in:Microbial ecology 1998-09, Vol.36 (2), p.121-130
Main Authors: Mohamed, M.N. (National Hydrology Research Institute, Saskatoon, Saskatchewan, Canada.), Lawrence, J.R, Robarts, R.D
Format: Article
Language:English
Subjects:
AGUAS RESIDUALES
AMBIENTE ACUATICO
Animal, plant and microbial ecology
Applied ecology
AQUATIC ENVIRONMENT
Bacteria
BACTERIAL BIOFILMS
Biofilms
Biological and medical sciences
Carbon
DISPONIBILIDAD DE NUTRIENTES
DISPONIBILITE D'ELEMENT NUTRITIF
EAU USEE
Ecotoxicology, biological effects of pollution
ELABORACION DE PULPA
Fresh water environment
Freshwater
Fundamental and applied biological sciences. Psychology
Lectins
MICROORGANISME
MICROORGANISMOS
MICROORGANISMS
MILIEU AQUATIQUE
Nitrogen
NUTRIENT AVAILABILITY
Nutrients
Periphyton
Phosphorus
POLLUTION DE L'EAU
POLUCION DEL AGUA
Pulp and paper mill effluents
PULPING
REDUCTION EN PATE
River water
WASTEWATER
WATER POLLUTION
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Summary:Experiments were conducted to determine the limiting nutrient and the effect of pulp mill effluent (PME) on heterotrophic biofilms in the Fraser River, a northern, temperate river in British Columbia, Canada. Biofilms were cultured by irrigating flow cells with Fraser River water alone (control), or river water amended with glucose; ammonium; phosphate; glucose, ammonium, and phosphate combined; or 3% PME. Phosphorus increased bacterial growth in the biofilm, which was rapidly transferred to protists, and reduced the amount of extracellular polymeric substances accumulated by biofilm bacteria. This work demonstrates phosphorus limitation of biofilm bacteria in a major river system and emphasizes the importance of nutrients in industrial discharges
ISSN:0095-3628
1432-184X
DOI:10.1007/s002489900099