Bacterial Biovolume and Biomass Estimations
AUTOR(ES)
Bratbak, Gunnar
RESUMO
The biomass of bacterial populations in aquatic ecosystems is often estimated by measuring bacterial biovolume and converting this into biomass in terms of carbon. A reliable conversion factor relating the measured bacterial biovolume to bacterial carbon content is essential for this approach. Based on direct measurements of bacterial cell carbon content, cell number, and biovolume, I have derived an average conversion factor of 5.6 × 10−13 g of C μm−3. This conversion factor is 3.4 to 6.6 times higher than most theoretically derived factors currently in use. Both bacterial biomass and bacterial production in aquatic ecosystems may thus have been seriously underestimated.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=241752Documentos Relacionados
- Bacterial dry matter content and biomass estimations.
- Relationships between Biovolume and Biomass of Naturally Derived Marine Bacterioplankton †
- Buoyant Densities and Dry-Matter Contents of Microorganisms: Conversion of a Measured Biovolume into Biomass
- Conversion of Biovolume Measurements of Soil Organisms, Grown Under Various Moisture Tensions, to Biomass and Their Nutrient Content
- Estimations of Bacterial Growth Rates in Natural Waters1