Original paper

Fluvial and epilithic organic matter dynamics in headwater streams of southwestern British Columbia, Canada

Kiffney, Peter M.; Richardson, John S.; Feller, Michael C.

Archiv für Hydrobiologie - Hauptbände Volume 149 Number 1 (2000), p. 109 - 129

55 references

published: Jul 21, 2000

DOI: 10.1127/archiv-hydrobiol/149/2000/109

BibTeX file

ArtNo. ESP141014901005, Price: 29.00 €

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Abstract

To characterize organic matter dynamics in headwater streams of southwestern British Columbia, Canada, we monitored epilithic biomass and fluvial transport of organic matter. Fluvial organic matter was collected once to twice monthly from 7 streams: samples were processed as coarse particulate organic matter (CPOM), fine particulate organic matter (FPOM), and dissolved organic matter (DOM). Epilithon was collected monthly from unglazed, ceramic tiles in 12 stream reaches and measured for ash-free dry mass (AFDM) and chlorophyll-a. CPOM and FPOM concentrations were higher during the wet season (1 October-30 April) than the dry season (1 May-30 September). Averaged across sites, CPOM and FPOM concentrations were positively related to mean daily discharge averaged over the 7 days before sample collection. In contrast, discharge and DOM concentration were inversely related. DOM concentration was positively correlated to chlorophyll-a accrual. Seasonal variation in epilithic chlorophyll-a and AFDM accumulation was high. AFDM accumulation rates ranged from a low in January 1997 of 0.31 to a high of 3.6 µg cm-2d

Keywords

organic matterepilithicfluvialstreamsheadwater