title: Particulate carbon and nitrogen determinations in tracer studies: The neglected variables.
abstract: We address two issues in the determination of particulate carbon and nitrogen in suspended matter of aquatic environments. One is the adsorption of dissolved organic matter on filters, leading to overestimate particulate matter. The second is the material loss during filtration due to fragile algal cells breaking up. Examples from both laboratory cultures and natural samples are presented. We recommend using stacked filters in order to estimate the first and filtering different volumes of water in order to evaluate the second.
authors: Ecologie des Systèmes Marins Côtiers (UMR5119 CNRS-IRD-UM2), Université Montpellier 2, CC 093, 34095 Montpellier Cedex 5, France. Electronic address: collos@univ-montp2.fr.
authors: Yves
authors: Y
authors: Collos
authors: Ecologie des Systèmes Marins Côtiers (UMR5119 CNRS-IRD-UM2), Université Montpellier 2, CC 093, 34095 Montpellier Cedex 5, France.
authors: Cécile
authors: C
authors: Jauzein
authors: Ecologie des Systèmes Marins Côtiers (UMR5119 CNRS-IRD-UM2), Université Montpellier 2, CC 093, 34095 Montpellier Cedex 5, France.
authors: Elise
authors: E
authors: Hatey
keywords: Adsorption; Carbon; Material loss; Nitrogen; Phytoplankton; Suspended particulate matter